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Note: This page contains sample records for the topic "radiation exposure managing" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


1

Americans' Average Radiation Exposure  

SciTech Connect (OSTI)

We live with radiation every day. We receive radiation exposures from cosmic rays, from outer space, from radon gas, and from other naturally radioactive elements in the earth. This is called natural background radiation. It includes the radiation we get from plants, animals, and from our own bodies. We also are exposed to man-made sources of radiation, including medical and dental treatments, television sets and emission from coal-fired power plants. Generally, radiation exposures from man-made sources are only a fraction of those received from natural sources. One exception is high exposures used by doctors to treat cancer patients. Each year in the United States, the average dose to people from natural and man-made radiation sources is about 360 millirem. A millirem is an extremely tiny amount of energy absorbed by tissues in the body.

NA

2000-08-11T23:59:59.000Z

2

Annual DOE Occupational Radiation Exposure Reports | Department...  

Broader source: Energy.gov (indexed) [DOE]

Annual DOE Occupational Radiation Exposure Reports Annual DOE Occupational Radiation Exposure Reports September 24, 2013 Annual DOE Occupational Radiation Exposure | 2012 Report...

3

Occupational Radiation Exposure | Department of Energy  

Energy Savers [EERE]

Radiation Exposure Welcome The Occupational Radiation Exposure Information page on this web page is intended to provide the latest available information on radiation exposure to...

4

Radiation Exposure Monitoring Systems Data Reporting Guide  

Broader source: Energy.gov [DOE]

Instructions for preparing occupational exposure data for submittal to the Radiation Exposure Monitoring System (REMS) repository.

5

DOE 2013 Occupational Radiation Exposure Report  

Office of Environmental Management (EM)

available on the U.S. Department of Energy Radiation Exposure Monitoring System Program Web Site at: http:energy.govehssoccupational-radiation-exposure Foreword iii MATTHEW B....

6

Annual DOE Occupational Radiation Exposure | 2008 Report  

Broader source: Energy.gov [DOE]

The DOE 2008 Occupational Radiation Exposure Report analyzes occupational radiation exposures at U.S. Department of Energy (DOE) facilities during 2008.

7

ANNUAL DOE OCCUPATIONAL RADIATION EXPOSURE | 2013 REPORT  

Broader source: Energy.gov [DOE]

The DOE 2013 Occupational Radiation Exposure Report analyzes occupational radiation exposures at U.S. Department of Energy (DOE) facilities during 2013.

8

Annual DOE Occupational Radiation Exposure | 2004 Report  

Broader source: Energy.gov [DOE]

The DOE 2004 Occupational Radiation Exposure Report analyzes occupational radiation exposures at U.S. Department of Energy (DOE) facilities during 2004.

9

Annual DOE Occupational Radiation Exposure | 2000 Report  

Broader source: Energy.gov [DOE]

The DOE 2000 Occupational Radiation Exposure Report analyzes occupational radiation exposures at U.S. Department of Energy (DOE) facilities during 2000.

10

Annual DOE Occupational Radiation Exposure | 1999 Report  

Broader source: Energy.gov [DOE]

The DOE Occupational Radiation Exposure Report, 1999 reports occupational radiation exposures incurred by individuals at DOE facilities during the calendar year 1999.

11

Annual DOE Occupational Radiation Exposure | 1974 Report  

Broader source: Energy.gov [DOE]

The Seventh Annual Report of Radiation Exposures for AEC & AEC Contractor Employees analyzes occupational radiation exposures at the Atomic Energy Commission (AEC) and its contractor employees during 1974.

12

Annual DOE Occupational Radiation Exposure | 1997 Report  

Broader source: Energy.gov [DOE]

The DOE Occupational Radiation Exposure Report, 1997 reports occupational radiation exposures incurred by individuals at U.S. Department of Energy (DOE) facilities during the calendar year 1997.

13

Annual DOE Occupational Radiation Exposure | 1995 Report  

Broader source: Energy.gov [DOE]

The DOE Occupational Radiation Exposure Report, 1995 reports occupational radiation exposures incurred by individuals at U.S. Department of Energy (DOE) facilities during the calendar year 1995.

14

Annual DOE Occupational Radiation Exposure | 1996 Report  

Broader source: Energy.gov [DOE]

The DOE Occupational Radiation Exposure Report, 1996 reports occupational radiation exposures incurred by individuals at U.S. Department of Energy (DOE) facilities during the calendar year 1996.

15

Annual DOE Occupational Radiation Exposure | 1998 Report  

Broader source: Energy.gov [DOE]

The DOE Occupational Radiation Exposure Report, 1998 reports occupational radiation exposures incurred by individuals at DOE facilities during the calendar year 1998.

16

Annual DOE Occupational Radiation Exposure | 2001 Report  

Broader source: Energy.gov [DOE]

The DOE 2001 Occupational Radiation Exposure Report analyzes occupational radiation exposures at U.S. Department of Energy (DOE) facilities during 2001.

17

Assessing exposure to radiation  

SciTech Connect (OSTI)

Since the founding of Lawrence Livermore National Laboratory, we have been world leaders in evaluating the risks associated with radiation. Ultrasensitive tools allow us not only to measure radionuclides present in the body but also to reconstruct the radiation dose from past nuclear events and to project the levels of radiation that will still be present in the body for 50 years after the initial intake. A variety of laboratory procedures, including some developed here, give us detailed information on the effects of radiation at the cellular level. Even today, we are re-evaluating the neutron dose resulting from the bombing at Hiroshima. Our dose reconstruction and projection capabilities have also been applied to studies of Nagasaki, Chernobyl, the Mayak industrial complex in the former Soviet Union, the Nevada Test Site, Bikini Atoll, and other sites. We are evaluating the information being collected on individuals currently working with radioactive material at Livermore and elsewhere as well as previously collected data on workers that extends back to the Manhattan Project.

Walter, K.

1997-01-01T23:59:59.000Z

18

Annual DOE Occupational Radiation Exposure | 1990 Report  

Broader source: Energy.gov [DOE]

The Twenty-third Annual Report of Radiation Exposures for DOE & DOE Contractor Employees analyzes occupational radiation exposures at the U.S. Department of Energy (DOE) and its contractor employees during 1990.

19

Annual DOE Occupational Radiation Exposure | 1991 Report  

Broader source: Energy.gov [DOE]

The Twenty-fourth Annual Report of Radiation Exposures for DOE & DOE Contractor Employees analyzes occupational radiation exposures at the U.S. Department of Energy (DOE) and its contractor employees during 1991.

20

Annual DOE Occupational Radiation Exposure | 1989 Report  

Broader source: Energy.gov [DOE]

The Twenty-second Annual Report of Radiation Exposures for DOE & DOE Contractor Employees analyzes occupational radiation exposures at the U.S. Department of Energy (DOE) and its contractor employees during 1989.

Note: This page contains sample records for the topic "radiation exposure managing" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

Annual DOE Occupational Radiation Exposure | 1986 Report  

Broader source: Energy.gov [DOE]

The Nineteenth Annual Report of Radiation Exposures for DOE & DOE Contractor Employees analyzes occupational radiation exposures at the U.S. Department of Energy (DOE) and its contractor employees during 1986.

22

Annual DOE Occupational Radiation Exposure | 1982 Report  

Broader source: Energy.gov [DOE]

The Fifteenth Annual Report of Radiation Exposures for DOE & DOE Contractor Employees analyzes occupational radiation exposures at the U.S. Department of Energy (DOE) and its contractor employees during 1982.

23

Annual DOE Occupational Radiation Exposure | 1983 Report  

Broader source: Energy.gov [DOE]

The Sixteenth Annual Report of Radiation Exposures for DOE & DOE Contractor Employees analyzes occupational radiation exposures at the U.S. Department of Energy (DOE) and its contractor employees during 1983.

24

Annual DOE Occupational Radiation Exposure | 1980 Report  

Broader source: Energy.gov [DOE]

The Thirteenth Annual Report of Radiation Exposures for DOE & DOE Contractor Employees analyzes occupational radiation exposures at the U.S. Department of Energy (DOE) and its contractor employees during 1980.

25

Annual DOE Occupational Radiation Exposure | 1979 Report  

Broader source: Energy.gov [DOE]

The Twelfth Annual Report of Radiation Exposures for DOE & DOE Contractor Employees analyzes occupational radiation exposures at the U.S. Department of Energy (DOE) and its contractor employees during 1979.

26

Annual DOE Occupational Radiation Exposure | 1987 Report  

Broader source: Energy.gov [DOE]

The Twentieth Annual Report of Radiation Exposures for DOE & DOE Contractor Employees analyzes occupational radiation exposures at the U.S. Department of Energy (DOE) and its contractor employees during 1987.

27

Annual DOE Occupational Radiation Exposure | 1985 Report  

Broader source: Energy.gov [DOE]

The Eighteenth Annual Report of Radiation Exposures for DOE & DOE Contractor Employees analyzes occupational radiation exposures at the U.S. Department of Energy (DOE) and its contractor employees during 1985.

28

Annual DOE Occupational Radiation Exposure | 1984 Report  

Broader source: Energy.gov [DOE]

The Seventeenth Annual Report of Radiation Exposures for DOE & DOE Contractor Employees analyzes occupational radiation exposures at the U.S. Department of Energy (DOE) and its contractor employees during 1984.

29

Annual DOE Occupational Radiation Exposure | 1981 Report  

Broader source: Energy.gov [DOE]

The Fourteenth Annual Report of Radiation Exposures for DOE & DOE Contractor Employees analyzes occupational radiation exposures at the U.S. Department of Energy (DOE) and its contractor employees during 1981.

30

DOE 2012 Occupational Radiation Exposure October 2013  

SciTech Connect (OSTI)

The U.S. Department of Energy (DOE) Office of Analysis within the Office of Health, Safety and Security (HSS) publishes the annual DOE Occupational Radiation Exposure Report to provide an overview of the status of radiation protection practices at DOE (including the National Nuclear Security Administration [NNSA]). The DOE 2012 Occupational Radiation Exposure Report provides an evaluation of DOE-wide performance regarding compliance with Title 10, Code of Federal Regulations (C.F.R.), Part 835, Occupational Radiation Protection dose limits and as low as reasonably achievable (ALARA) process requirements. In addition, the report provides data to DOE organizations responsible for developing policies for protection of individuals from the adverse health effects of radiation. The report provides a summary and an analysis of occupational radiation exposure information from the monitoring of individuals involved in DOE activities. Over the past 5-year period, the occupational radiation exposure information is analyzed in terms of aggregate data, dose to individuals, and dose by site. As an indicator of the overall amount of radiation dose received during the conduct of operations at DOE, the report includes information on collective total effective dose (TED). The TED is comprised of the effective dose (ED) from external sources, which includes neutron and photon radiation, and the internal committed effective dose (CED), which results from the intake of radioactive material into the body. The collective ED from photon exposure decreased by 23% between 2011 and 2012, while the neutron dose increased by 5%. The internal dose components of the collective TED decreased by 7%. Over the past 5-year period, 99.99% of the individuals receiving measurable TED have received doses below the 2 roentgen equivalent in man (rems) (20 millisievert [mSv]) TED administrative control level (ACL), which is well below the DOE regulatory limit of 5 rems (50 mSv) TED annually. The occupational radiation exposure records show that in 2012, DOE facilities continued to comply with DOE dose limits and ACLs and worked to minimize exposure to individuals. The DOE collective TED decreased 17.1% from 2011 to 2012. The collective TED decreased at three of the five sites with the largest collective TED. u Idaho Site – Collective dose reductions were achieved as a result of continuing improvements at the Advanced Mixed Waste Treatment Project (AMWTP) through the planning of drum movements that reduced the number of times a container is handled; placement of waste containers that created highradiation areas in a centralized location; and increased worker awareness of high-dose rate areas. In addition, Idaho had the largest decrease in the total number of workers with measurable TED (1,143 fewer workers). u Hanford Site (Hanford) – An overall reduction of decontamination and decommissioning (D&D) activities at the Plutonium Finishing Plant (PFP) and Transuranic (TRU) retrieval activities resulted in collective dose reductions. u Savannah River Site (SRS) – Reductions were achieved through ALARA initiatives employed site wide. The Solid Waste Management Facility used extended specialty tools, cameras and lead shield walls to facilitate removal of drums. These tools and techniques reduce exposure time through improved efficiency, increase distance from the source of radiation by remote monitoring, shield the workers to lower the dose rate, and reduce the potential for contamination and release of material through repacking of waste. Overall, from 2011 to 2012, there was a 19% decrease in the number of workers with measurable dose. Furthermore, due to a slight decrease in both the DOE workforce (7%) and monitored workers (10%), the ratio of workers with measurable doses to monitored workers decreased to 13%. Another primary indicator of the level of radiation exposure covered in this report is the average measurable dose, which normalizes the collective dose over the population of workers who actually received a measurable dose. The average measurable TED in

none,

2012-02-02T23:59:59.000Z

31

Radiation Exposure from CT Examinations in Japan  

Science Journals Connector (OSTI)

Computed tomography (CT) is the largest source of medical radiation exposure to the general population, and is ... assess the current situation of CT use in Japan, and to investigate variations in radiation expos...

Yoshito Tsushima; Ayako Taketomi-Takahashi; Hiroyuki Takei…

2010-11-01T23:59:59.000Z

32

INSTRUCTION CONCERNING PRENATAL RADIATION EXPOSURE A. INTRODUCTION  

E-Print Network [OSTI]

/fetus exposed to radiation, a dose limit for the embryo/fetus, and suggestions for reducing radiation exposure and the Radiation Control Officer in writing that she is pregnant and the estimated date of conception.311, FAC, places different radiation dose limits on declared pregnant workers than on adult workers

Slatton, Clint

33

ORISE: DOE's Radiation Exposure Monitoring System (REMS)  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Monitoring System (REMS) Monitoring System (REMS) ORISE maintains large database of radition exposure records for the U.S. Department of Energy ORISE staff monitoring radiation data for DOE Rule 10 CFR 835 establishes the U.S. Department of Energy's (DOE) occupational protection rule and requires assessment and recording of radiation doses to individuals who are exposed to sources of radiation or contamination. The Radiation Exposure Monitoring System (REMS) database is the radiation exposure data repository for all monitored DOE employees, contractors, subcontractors and members of the public. REMS maintains dose records for all monitored individuals dating back to 1969. Aggregated, site-specific data are available on the Radiation Exposure Monitoring System website for all years since 1986. Currently,

34

Reporting Occupational Radiation Exposure Data  

Broader source: Energy.gov [DOE]

IMPORTANT NOTICE: Due to increasing security concerns for the protection of Personnally Identifiable Information (PII), AU-23 has issued a policy statement regarding the submission of radiation...

35

Sources Of Average Individual Radiation Exposure  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Of Average Individual Radiation Exposure Of Average Individual Radiation Exposure Natural background Medical Consumer products Industrial, security, educational and research Occupational 0.311 rem 0.300 rem 0.013 rem 0.0003 rem 0.0005 rem Savannah River Nuclear Solutions, LLC, provides radiological protection services and oversight at the Savannah River Site (SRS). These services include radiation dose measurements for persons who enter areas where they may be exposed to radiation or radioactive material. The results are periodically reported to monitored individuals. The results listed are based on a radiation dose system developed by the International Commission on Radiation Protection. The system uses the terms "effective dose," "equivalent dose" and units of rem. You may be more familiar with the term "millirem" (mrem), which is 1/1000 of a rem.

36

Annual DOE Occupational Radiation Exposure | 1992- 1994 Report  

Broader source: Energy.gov [DOE]

The DOE Occupational Radiation Exposure Report, 1992-1994 reports occupational radiation exposures incurred by individuals at U.S. Department of Energy (DOE) facilities from 1992 through 1994.

37

DOE 2008 Occupational Radiation Exposure October 2009  

SciTech Connect (OSTI)

A major priority of the U.S. Department of Energy (DOE) is to ensure the health, safety, and security of DOE employees, contractors, and subcontractors. The Office of Health, Safety and Security (HSS) provides the corporate-level leadership and strategic vision necessary to better coordinate and integrate health, safety, environment, security, enforcement, and independent oversight programs. One function that supports this mission is the DOE Corporate Operating Experience Program that provides collection, analysis, and dissemination of performance indicators, such as occupational radiation exposure information. This analysis supports corporate decision-making and synthesizes operational information to support continuous environment, safety, and health improvement across the DOE complex.

U.S. Department of Energy, Office of Health, Safety and Security

2009-10-01T23:59:59.000Z

38

DOE 2013 Occupational Radiation Exposure Report ALARA Activities...  

Office of Environmental Management (EM)

disconnection allows termination of correction elements to be conducted in a lower dose rate area and in less time. This innovation will greatly reduce radiation exposures to...

39

A Basic Overview of Occupational Radiation Exposure Monitoring, Analysis & Reporting  

Broader source: Energy.gov [DOE]

This pamphlet is intended to provide a short summary of the Department of Energy Laboratory Accreditation Program and DOE Radiation Exposure Monitoring

40

A Basic Overview of the Occupational Radiation Exposure Monitoring...  

Office of Environmental Management (EM)

and accurate, and conforms to national and international performance and quality assurance standards. The DOE Radiation Exposure Monitoring Systems (REMS) program provides for...

Note: This page contains sample records for the topic "radiation exposure managing" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

DOE occupational radiation exposure. Report 1992--1994  

SciTech Connect (OSTI)

The DOE Occupational Radiation Exposure Report, 1992-1994 reports occupational radiation exposures incurred by individuals at US Department of Energy (DOE) facilities from 1992 through 1994. This report includes occupational radiation exposure information for all DOE employees, contractors, subcontractors, and visitors. This information is analyzed and trended over time to provide a measure of the DOE`s performance in protecting its workers from radiation. Occupational radiation exposure at DOE has been decreasing over the past 5 years. In particular, doses in the higher dose ranges are decreasing, including the number of doses in excess of the DOE limits and doses in excess of the 2 rem Administrative Control Level (ACL). This is an indication of greater attention being given to protecting these individuals from radiation in the workplace.

NONE

1997-05-01T23:59:59.000Z

42

ORISE: U.S. Nuclear Regulatory Commission Radiation Exposure Information  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Information and Reporting System (REIRS) Information and Reporting System (REIRS) ORISE maintains large database of radiation exposure records for the U.S. Nuclear Regulatory Commission U.S. Nuclear Regulatory Commission Radiation Exposure Information and Reporting System (REIRS) The U.S. Nuclear Regulatory Commission (NRC) is required by federal mandate to maintain and evaluate radiation protection data for workers at facilities that it licenses. As part of its mission of safety, the NRC operates the Radiation Exposure Information and Reporting System (REIRS), a database system containing all occupational radiation exposure records that have been submitted to the NRC under 10 CFR Part 20. REIRS encompasses 1,800-plus NRC licensees and contains more than five million records for more than one million monitored individuals.

43

Patient radiation exposure during different kyphoplasty techniques  

Science Journals Connector (OSTI)

......could reduce dose and radiation-associated risk...the risk of developing radiation-induced stochastic...specific computer software is available, providing...developed at the Medical Radiation Laboratory of the Finnish...Radiation and Nuclear Safety (STUK)(12). The......

Denis Panizza; Massimo Barbieri; Francesco Parisoli; Luca Moro

2014-01-01T23:59:59.000Z

44

Global methylation responses to low dose radiation exposure  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

methylation responses to low dose radiation exposure methylation responses to low dose radiation exposure Pamela J Sykes, Michelle R Newman, Benjamin J Blyth and Rebecca J Ormsby Haematology and Genetic Pathology, Flinders University and Medical Centre, Flinders Centre for Cancer Prevention and Control, Bedford Park, Adelaide, South Australia 5042 Australia. (pam.sykes@flinders.edu.au). Our goal is to study the mechanisms involved in biological responses to low doses of radiation in vivo in the dose range that is relevant to population and occupational exposures. At high radiation doses, DNA double-strand breaks are considered the critical lesion underlying the initiation of radiation-induced carcinogenesis. However, at the very low radiation doses relevant for the general public, the induction of DNA double-strand breaks

45

Operating Experience Level 3, DOE Occupational Radiation Exposures for 2013  

Broader source: Energy.gov [DOE]

This Operating Experience Level 3 (OE-3) document provides an overview summary of radiation doses from occupational exposures at the Department of Energy (DOE), including the National Nuclear Security Administration for the year 2013.

46

Molecular signatures of low dose radiation exposure in human subjects  

Science Journals Connector (OSTI)

...Molecular signatures of low dose radiation exposure in human subjects...Volume 46, 2005] 3096 Low dose ionizing radiation (LDIR) in the 1-10 cGy range has largely unknown biological...the effect and risk at low dose by extrapolation from measured...

Zelanna Goldberg; Chad W. Schwietert; Maggie Isbell; Joerg Lehmann; Robin Stern; Christine Hartmann Siantar; and David M. Rocke

2005-05-01T23:59:59.000Z

47

Low Dose Radiation Exposure: Exploring Bystander Effects In Vivo.  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Exposure: Exploring Bystander Effects Exposure: Exploring Bystander Effects In Vivo. 1 Blyth, B.J., 1 Sykes, P.J. 1 Department of Haematology and Genetic Pathology, Flinders University and Medical Centre, Bedford Park, South Australia, 5042, The general population is daily exposed to chronic, low doses of ionizing radiation from both natural and artificial sources. The shape of the radiation dose-response curve at these low doses is currently linearly extrapolated from data obtained after high dose exposure due to the low sensitivity of traditional biological assays after near-background exposures. At odds with this Linear No-Threshold model, are the phenomena collectively referred to as the radiation-induced bystander effect. The bystander effect describes a collection of in vitro

48

Radiation Exposure Monitoring Systems Data Submittal Notification  

Broader source: Energy.gov [DOE]

Monitoring records are required to be reported to the Department of Energy (DOE) Radiation Records Repository by March 31 under DOE Order 231.1B and in accordance with the REMS Reporting Guide.

49

A radiation exposure index for CT  

Science Journals Connector (OSTI)

......metrics provided to operators at the completion of each examination relate to the amount...for each scan, whereas current CTDI indices only quantify the radiation incident...requires manufacturers to generate these indices for clinical examinations. With this......

Walter Huda

2013-12-01T23:59:59.000Z

50

Occupational Radiation Exposures at the Department of Energy  

Broader source: Energy.gov [DOE]

Occupational Radiation Exposures at the Department of Energy Nimi Rao*, U.S. Department of Energy ; Derek Hagemeyer, Oak Ridge Institute for Science and Education Abstract: The DOE Radiation Exposure Monitoring System (REMS) project began in 1969 under the AEC and has undergone significant evolutions since inception. The system serves as the central repository for occupational radiation exposure records for all individuals monitored at DOE facilities. One of the primary purposes of the REMS database is to gather the information needed to produce the annual DOE Occupational Radiation Exposure Report. The report provides analysis of monitoring results over the past 5 years, as well as a historical perspective. The presentation will include the latest information collected for the 2013 monitoring year. Tables and graphics will provide an overview of trends and areas of interest. In addition to the traditional static tables and graphs from the annual report, DOE has initiated a data visualization effort to offer more interactive e-products for the data in REMS. An interactive dashboard tool will be presented, as well as an interactive report on the major impacts on occupational radiation exposure at DOE over the last 10 years.

51

RADIATION EXPOSURE DURING PAEDIATRIC CT IN SUDAN: CT DOSE, ORGAN AND EFFECTIVE DOSES  

Science Journals Connector (OSTI)

......research-article Paper RADIATION EXPOSURE DURING PAEDIATRIC...Energy Commission, Radiation Safety Institute, PO Box 3001...assess the magnitude of radiation exposure during paediatric...CT-Expo 2.1 dosimetry software. Doses were evaluated......

I. I. Suliman; H. M. Khamis; T. H. Ombada; K. Alzimami; M. Alkhorayef; A. Sulieman

2014-11-01T23:59:59.000Z

52

Health Impacts from Acute Radiation Exposure  

SciTech Connect (OSTI)

Absorbed doses above1-2 Gy (100-200 rads) received over a period of a day or less lead to one or another of the acute radiation syndromes. These are the hematopoietic syndrome, the gastrointestinal (GI) syndrome, the cerebrovascular (CV) syndrome, the pulmonary syndrome, or the cutaneous syndrome. The dose that will kill about 50% of the exposed people within 60 days with minimal medical care, LD50-60, is around 4.5 Gy (450 rads) of low-LET radiation measured free in air. The GI syndrome may not be fatal with supportive medical care and growth factors below about 10 Gy (1000 rads), but above this is likely to be fatal. Pulmonary and cutaneous syndromes may or may not be fatal, depending on many factors. The CV syndrome is invariably fatal. Lower acute doses, or protracted doses delivered over days or weeks, may lead to many other health outcomes than death. These include loss of pregnancy, cataract, impaired fertility or temporary or permanent sterility, hair loss, skin ulceration, local tissue necrosis, developmental abnormalities including mental and growth retardation in persons irradiated as children or fetuses, radiation dermatitis, and other symptoms listed in Table 2 on page 12. Children of parents irradiated prior to conception may experience heritable ill-health, that is, genetic changes from their parents. These effects are less strongly expressed than previously thought. Populations irradiated to high doses at high dose rates have increased risk of cancer incidence and mortality, taken as about 10-20% incidence and perhaps 5-10% mortality per sievert of effective dose of any radiation or per gray of whole-body absorbed dose low-LET radiation. Cancer risks for non-uniform irradiation will be less.

Strom, Daniel J.

2003-09-30T23:59:59.000Z

53

Radiation Management Act (Oklahoma) | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Radiation Management Act (Oklahoma) Radiation Management Act (Oklahoma) Radiation Management Act (Oklahoma) < Back Eligibility Utility Investor-Owned Utility Program Info State Oklahoma Program Type Environmental Regulations Provider Oklahoma Department of Environmental Quality This Act establishes The Department of Environmental Quality as the designated official agency of the State of Oklahoma for all regulatory activities for the use of atomic energy and sources of radiation, except for the use of sources of radiation by diagnostic x-ray facilities. It also states rules for permits and fees related to the establishment of standards for safe levels of protection against radiation; the maintenance and submission of records; the determination, prevention and control of radiation hazards; the reporting of radiation accidents; the handling,

54

Assessing protection against radiation exposure after prostate 125I brachytherapy  

Science Journals Connector (OSTI)

AbstractPurpose To expand the radiation dose rate measurement data set by measuring radiation under various prostate 125I brachytherapy situations. Methods and Materials Measurements were obtained from 63 consecutive unselected patients at Tokyo Medical Center, Japan. Differences in factors during measurements, such as body postures, distances from the skin surface, and measurement directions were considered. Furthermore, shielding effects of lead-lined underwear, consisting mainly of 0.1-mm thickness of lead, were also assessed. Results Radiation exposure varies according to the patient's body posture, with results differing as much as approximately 40.0% in measured radiation dose rates at 30 cm from the anterior skin surface. Weight, body mass index, and tissue thickness showed good correlations with measured radiation dose rates. The magnitude of radiation exposure attenuation by shielding was approximately 95.8%, similar to the attenuation ratio based on tissue measurements made in the lateral direction. The respective mean times required to reach 1 mSv were 1.2, 7.6, and 65.4 days in the standing position and 0.6, 4.6, and 40.4 days in the supine position at the site of contact, and at 30 and 100 cm from the anterior skin surface. Conclusions This study obtained supplemental information pertaining to radiological protection and confirmed that shielding can be an effective tool for reducing exposures.

Takashi Hanada; Atsunori Yorozu; Riki Kikumura; Toshio Ohashi; Naoyuki Shigematsu

2014-01-01T23:59:59.000Z

55

DOE Radiation Exposure Monitoring System (REMS) Data Update  

SciTech Connect (OSTI)

This slide show presents the 2011 draft data for DOE occupational radiation exposure.Clarification is given on Reporting Data regarding: reporting Total Organ Dose (TOD); reporting Total Skin Dose (TSD), and Total Extremity Dose (TExD) ; and Special individuals reporting.

Rao, Nimi; Hagemeyer, Derek

2012-05-05T23:59:59.000Z

56

Radiation exposure assessment for portsmouth naval shipyard health studies  

Science Journals Connector (OSTI)

......of radiation worker cohorts employed...Hanford Site, Oak Ridge National Laboratory...Canada (AECL) workers from the Chalk...squares) between 1950 and 1996. DISCUSSION...for 13,468 workers with PNS exposure...assignments before and after adjustments......

R. D. Daniels; T. D. Taulbee; P. Chen

2004-09-01T23:59:59.000Z

57

E-Print Network 3.0 - atm radiation exposure Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

O'Connell Summary: tissues) 12;Sources of Background Radiation Exposure Naturally occurring radioactive materials... . Cosmic radiation. Fall-out from nuclear weapons...

58

On the Use of SRIM for Computing Radiation Damage Exposure  

SciTech Connect (OSTI)

The SRIM (formerly TRIM) Monte Carlo simulation code is widely used to compute a number of parameters relevant to ion beam implantation and ion beam processing of materials. It also has the capability to compute a common radiation damage exposure unit known as atomic displacements per atom (dpa). Since dpa is a standard measure of primary radiation damage production, most researchers who employ ion beams as a tool for inducing radiation damage in materials use SRIM to determine the dpa associated with their irradiations. The use of SRIM for this purpose has been evaluated and comparisons have been made with an internationally-recognized standard definition of dpa, as well as more detailed atomistic simulations of atomic displacement cascades. Differences between the standard and SRIM-based dpa are discussed and recommendations for future usage of SRIM in radiation damage studies are made. In particular, it is recommended that when direct comparisons between ion and neutron data are intended, the Kinchin-Pease option of SRIM should be selected.

Stoller, Roger E. [Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Materials Science and Technology Div.; Toloczko, Mychailo B. [Pacific Northwest National Laboratory (PNNL), Richland, WA (United States); Was, Gary S. [Univ. of Michigan, Ann Arbor, MI (United States). Nuclear Engineering and Radiological Sciences; Certain, Alicia G. [Pacific Northwest National Laboratory (PNNL), Richland, WA (United States); Dwaraknath, S. [Univ. of Michigan, Ann Arbor, MI (United States). Nuclear Engineering and Radiological Sciences; Garner, Frank A. [Radiation Effects Consulting, Richland, WA (United States)

2013-06-06T23:59:59.000Z

59

Radiation exposure inside reinforced concrete buildings at Nagasaki  

SciTech Connect (OSTI)

The biological effects on the residents of Hiroshima and Nagasaki due to initial-irradiation exposure during the nuclear attacks of World War II was recognized immediately as an important source of information. After the war, an extensive effort gathered data concerning the locations of individuals at the time of the attack and their subsequent medical histories. The data from personnel located in reinforced concrete buildings are particularly significant, since large groups of occupants received radiation injury without complications due to blast and thermal effects. In order to correlate the radiation dose with physiological effects, the dose to each individual must be calculated. Enough information about the construction of the buildings was available after the war to allow a radiation transport model to be constructed, but the accurate calculation of penetration into such large, thick-walled three dimensional structures was beyond the scope of computing technology until recently. Now, the availability of Cray vector computers and the development of a specially-constructed discrete ordinates transport code, TORT, have combined to allow the successful completion of such a study. This document describes the radiation transport calculations and tabulates the resulting doses by source component and individual case location. An extensive uncertainty analysis is also included. These data are to be used in another study as input to a formal statistical analysis, resulting in a new value for the LD50 dose, i.e., the dose at which the mortality risk is 50%. 55 refs., 67 figs., 70 tabs.

Rhoades, W.A.; Childs, R.L.; Ingersoll, D.T.

1989-05-01T23:59:59.000Z

60

Polymorphisms in DNA Repair Genes, Medical Exposure to Ionizing Radiation, and Breast Cancer Risk  

Science Journals Connector (OSTI)

...the role of DSB repair in response to low-dose radiation, particularly the range experienced by women from mammograms and other...breast cancer associated with exposure to low doses of ionizing radiation. Although we specifically designed our questionnaire...

Robert C. Millikan; Jon S. Player; Allan Rene deCotret; Chiu-Kit Tse; and Temitope Keku

2005-10-01T23:59:59.000Z

Note: This page contains sample records for the topic "radiation exposure managing" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


61

rev November 2004 Radiation Safety Manual Section 6 -Personnel Exposure and Monitoring  

E-Print Network [OSTI]

. Estimating Fetal Dose Equivalent .................................................6-10 a. Positionrev November 2004 Radiation Safety Manual Section 6 - Personnel Exposure and Monitoring Page 6-1 Contents .............................................................................6-1 A. Radiation

Wilcock, William

62

Pamphlet, A Basic Overview of Occupational Radiation Exposure Monitoring, Analysis & Reporting  

Broader source: Energy.gov [DOE]

This pamphlet is intended to provide a short summary of two specific HSS programs that aid in the oversight of radiation protection activities at DOE, Department of Energy Laboratory Accreditation Program (DOELAP) and Radiation Exposure Monitoring Systems (REMS)

63

Radiation Exposure in Nonvascular Fluoroscopy-Guided Interventional Procedures  

SciTech Connect (OSTI)

Purpose: To investigate the radiation exposure in non-vascular fluoroscopy guided interventions and to search strategies for dose reduction. Materials and Methods: Dose area product (DAP) of 638 consecutive non-vascular interventional procedures of one year were analyzed with respect to different types of interventions; gastrointestinal tract, biliary interventions, embolizations of tumors and hemorrhage. Data was analyzed with special focus on the fluoroscopy doses and frame doses. The third quartiles (Q3) of fluoroscopy dose values were defined in order to set a reference value for our in-hospital practice. Results: Mean fluoroscopy times of gastrostomy, jejunostomy, right and left sided percutaneous biliary drainage, chemoembolization of the liver and embolization due to various hemorrhages were 5.9, 8.6, 13.5, 16.6, 17.4 and 25.2 min, respectively. The respective Q3 total DAP were 52.9, 73.3, 155.1, 308.4, 428.6 and 529.3 Gy*cm{sup 2}. Overall, around 66% of the total DAP originated from the radiographic frames with only 34% of the total DAP applied by fluoroscopy (P < 0.001). The investigators experience had no significant impact on the total DAP applied, most likely since there was no stratification to intervention-complexity. Conclusion: To establish Diagnostic Reference Levels (DRLs), there is a need to establish a registry of radiation dose data for the most commonly performed procedures. Documentation of interventional procedures by fluoroscopy 'grabbing' has the potential to considerably reduce radiation dose applied and should be used instead of radiographic frames whenever possible.

Kloeckner, Roman, E-mail: kloeckner@radiologie.klinik.uni-mainz.de [Johannes Gutenberg-University, Department of Diagnostic and Interventional Radiology (Germany); Bersch, Anton [Kreuznacher Diakonie, Department of Trauma Surgery and Orthopedics (Germany); Santos, Daniel Pinto dos; Schneider, Jens; Dueber, Christoph; Pitton, Michael Bernhard [Johannes Gutenberg-University, Department of Diagnostic and Interventional Radiology (Germany)

2012-06-15T23:59:59.000Z

64

Discovering Clinical Biomarkers of Ionizing Radiation Exposure with Serum Proteomic Analysis  

Science Journals Connector (OSTI)

...radiation treatment plans provided serum...long-established gold standard biomarker of radiation...Institutional Review Board-approved...using visual data mining techniques showed...exposure, gold standard lymphocyte assays...through visual data mining activities that...radiation treatment plans provided serum...

Cynthia Ménard; Donald Johann; Mark Lowenthal; Thierry Muanza; Mary Sproull; Sally Ross; James Gulley; Emanuel Petricoin; C. Norman Coleman; Gordon Whiteley; Lance Liotta; and Kevin Camphausen

2006-02-01T23:59:59.000Z

65

Low dose diagnostic radiation exposure and cancer risk in Trp53+/- mice  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

diagnostic radiation exposure and cancer risk in Trp53+/- mice diagnostic radiation exposure and cancer risk in Trp53+/- mice K Taylor, N Phan, ME Cybulski, L Laframboise, DR Boreham Department of Medical Physics and Applied Radiation Sciences, McMaster University, 1280 Main Street West, Hamilton ON L8S 4K1 The cancer risk associated with exposure to low doses of ionizing radiation has traditionally been extrapolated from effects observed at high doses and high dose rates using a linear no threshold model. Based on this approach, it has been postulated that human exposure to medical imaging involving low doses of x-rays and gamma rays increase an individual's risk of developing cancer throughout their lifetime. Conversely, there is evidence that low doses of gamma radiation increase the latency period of cancer depending upon genotype, cancer type, and the magnitude of

66

Radiation and Chemical Risk Management | Argonne National Laboratory  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

contaminated soil, military munitions disposal areas, and groundwater contaminated with carbon tetrachloride. Argonne's work in radiation and chemical risk management includes...

67

Effects of gamma radiation on Serratia marcescens; a comparison of effects of two different exposure rates  

E-Print Network [OSTI]

'Donovan, Effect of gamma radiation on Serratia marcescens: Comparison of the radiosensi- tivity of pigmented and nonpigmented cells. Radiation Res, 48, 40-52 (1971). 18. Alison P. Casarett, Radiation ~Biolo . p. 159. Prentice-Hall, Inc. , Englewood Cliffs... EFFECTS OF GAMMA RADIATION ON SL'RNATIA MARCESCENS A COMPARISON OF EFFECTS OF TWO DIFFERENT EXPOSURE RATES A Thesis by CHRISTY ANNETTE MOORE Submitted to the Graduate College of Texas ARM University in partial fulfillment of the requirements...

Moore, Christy Annette

1972-01-01T23:59:59.000Z

68

Radiation Exposure to Patient and Staff in Hepatic Chemoembolization: Risk Estimation of Cancer and Deterministic Effects  

Science Journals Connector (OSTI)

In order to calculate the organ doses, we used only the dosemeter values measured ... negligible compared to the direct and significantly longer radiation exposure to the liver region. When one wishes to keep the...

Nico Hidajat; Peter Wust; Roland Felix…

69

E-Print Network 3.0 - accidental radiation exposures Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

many uses, x-rays are the single largest source of man-made radiation exposure. X... -occurring radium and is a major ... Source: Yucca Mountain Project, US EPA Collection:...

70

Modelling of radiation exposure at high altitudes during solar storms  

Science Journals Connector (OSTI)

......with a different energy spectrum. To estimate...exposure due to solar flares, a model...measuring the flux of solar and galactic particles...and the high-energy proton and alpha...Exposure during Solar Maximum) project. One flight from......

H. Al Anid; B. J. Lewis; L. G. I. Bennett; M. Takada

2009-10-01T23:59:59.000Z

71

Exposure assessment: implications for epidemiological studies of ionizing radiation  

Science Journals Connector (OSTI)

......et al. (4) used average doses to birth cohorts...were made in the homes of 58% of the interviewed...histories (e.g. consumption of milk) in order...exposure to radon in homes and lung cancer have...controls on radon in homes are often based on...exposure to high linear energy transfer (LET......

Colin R. Muirhead

2008-12-01T23:59:59.000Z

72

Effects of combined radiofrequency radiation exposure on levels of reactive oxygen species in neuronal cells  

Science Journals Connector (OSTI)

......typical CDMA signal of 837 MHz and a WCDMA signal of 1950 MHz were applied to the RTL...incubator with a humidified atmosphere of 5% CO2. Analysis...exposure to UMTS 1950 MHz radiation and co-exposure...reaction of menadione with plasma thiols: enhancement......

Kyoung Ah Kang; Hyung Chul Lee; Je-Jung Lee; Mi-Na Hong; Myung-Jin Park; Yun-Sil Lee; Hyung-Do Choi; Nam Kim; Young-Gyu Ko; Jae-Seon Lee

2014-03-01T23:59:59.000Z

73

Radon in context of natural radiation exposure: the Czech experience  

Science Journals Connector (OSTI)

......doses from ingestion of water are reasonably avertable...and intervention (remediation of existing exposure...effective dose caused by water containing 1000 Bq l1...radon concentrations in ground water vary from some Becquerel......

J. Hulka

2008-06-01T23:59:59.000Z

74

Harrison Radiator Division's Energy Management, Reporting and Accounting System  

E-Print Network [OSTI]

HARRISON RADIATOR DIVISION'S ENERGY MANAGEMENT, REPORTING and ACCOUNTING SYSTEM Ronald J. Goubeaux Harrison Radiator Division Lockport, New York ABSTRACT Energy management is essential for obtaining the lowest possible product..., farm equipment, small aircraft and other types of vehicles. The energy management, reporting and accounting system that is covered in this paper is operating in Harrison's West Complex of the New York Operations located in Lockport, Western...

Goubeaux, R. J.

75

Exposure to Low-Dose Ionizing Radiation from Medical Imaging Procedures  

Science Journals Connector (OSTI)

...did not use measures of radiation dose that are specific to the subjects we studied but instead relied on estimates of effective doses, which are neither precisely measured nor subject-specific. The effective dose is a calculated estimate designed to provide a sex-averaged dose for a reference subject... Experimental and epidemiologic evidence has linked exposure to low-dose, ionizing radiation with the development of solid cancers and leukemia.1 As a result, persons at risk for repeated radiation exposure, such as workers in health care and the nuclear ...

Fazel R.; Krumholz H.M.; Wang Y.

2009-08-27T23:59:59.000Z

76

Oligonucleotide microarray analysis of low-dose ionizing radiation exposure  

Science Journals Connector (OSTI)

...health risk due to low-dose ionizing radiation is still debated. Functional...pathways that are induced by ionizing irradiation (IR...transcriptionally regulated by low-dose IR in occupationally...and showed different ranges of accumulated doses...

Paola Silingardi; Elena Morandi; Cinzia Severini; Daniele Quercioli; Monica Vaccari; Wolfango Horn; Maria Concetta Nucci; Vittorio Lodi; Francesco Violante; Sandro Grilli; and Annmaria Colacci

2007-05-01T23:59:59.000Z

77

Radiation and Uranium Resources Exposure Control (South Dakota)  

Broader source: Energy.gov [DOE]

The public policy of South Dakota is to encourage the constructive uses of radiation, the proper development of uranium resources, and the control of any associated harmful effects. The disposal of...

78

Radiation and Chemical Risk Management [EVS Program Area]  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Radiation and Chemical Risk Management Radiation and Chemical Risk Management EVS helps meet the challenge of protecting human health and the environment through the management of risk associated with radiation and chemicals in the environment. Protecting human health, welfare, and the environment in a world affected by energy production and technology is a global challenge. EVS helps to meet this challenge through research and analysis on the management of risk associated with radiation and chemicals in the environment. To improve the management of risk associated with nuclear and chemical materials and wastes at contaminated sites, we develop information and tools that support decision making related to health, safety, environmental, economic, and social-cultural concerns. Nuclear Materials and Waste Disposition

79

Indoor exposure to radiation in the case of an outdoorrelease  

SciTech Connect (OSTI)

This report quantifies the effectiveness of ''sheltering in place'' in a commercial building in the event of an outdoor radiological release. The indoor exposure to airborne particles is calculated by solving the mass balance equation that accounts for the loss of particles due to deposition, filtration and exhaust. Quantitative estimates of shelter-inplace effectiveness are provided for typical commercial buildings.

Price, Phillip N.; Jayaraman, Buvana

2006-06-01T23:59:59.000Z

80

Radiation Exposure From Medical Imaging Time to Regulate?  

E-Print Network [OSTI]

smaller population exposure. The current US situation is that quality control and qual- ity assurance modern medical imaging, there are serious is- sues of quality control, training, and, particularly of different standards and rules are in place; accreditation programs, through the American College

Brenner, David Jonathan

Note: This page contains sample records for the topic "radiation exposure managing" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


81

Light scattering apparatus and method for determining radiation exposure to plastic detectors  

DOE Patents [OSTI]

An improved system and method of analyzing cumulative radiation exposure registered as pits on track etch foils of radiation dosimeters. The light scattering apparatus and method of the present invention increases the speed of analysis while it also provides the ability to analyze exposure levels beyond that which may be properly measured with conventional techniques. Dosimeters often contain small plastic sheets that register accumulated damage when exposed to a radiation source. When the plastic sheet from the dosimeter is chemically etched, a track etch foil is produced wherein pits or holes are created in the plastic. The number of these pits, or holes, per unit of area (pit density) correspond to the amount of cumulative radiation exposure which is being optically measured by the apparatus. To measure the cumulative radiation exposure of a track etch foil a high intensity collimated beam is passed through foil such that the pits and holes within the track etch foil cause a portion of the impinging light beam to become scattered upon exit. The scattered light is focused with a lens, while the primary collimated light beam (unscattered light) is blocked. The scattered light is focused by the lens onto an optical detector capable of registering the optical power of the scattered light which corresponds to the cumulative radiation to which the track etch foil has been exposed.

Hermes, Robert E. (White Rock, NM)

2002-01-01T23:59:59.000Z

82

Cumulative exposure to medical sources of ionizing radiation in the first year after pediatric heart transplantation  

Science Journals Connector (OSTI)

Background Pediatric heart transplant recipients undergo a variety of radiologic tests with the attendant risk of exposure to ionizing radiation. We sought to quantify and describe the cumulative exposure to all forms of medical radiation during the first year after pediatric heart transplantation and identify factors associated with higher exposure. Methods Pediatric patients who received a heart transplant between January 2009 and May 2012 with follow-up at our institution were retrospectively reviewed. Patients were included if they survived through 1 year and the first coronary angiography. All medical testing using ionizing radiation performed during follow-up was compiled, and exposures were converted to effective dose (mSv). Results Included were 31 patients who underwent heart transplantation at a median age of 13.6 years (range, 0.3–18.3 years). The median number of radiologic tests performed was 38 (range, 18–154), including 8 catheterizations (range, 2–12), and 28 X-ray images (range, 11–135). Median cumulative effective dose was 53.5 mSv (range, 10.6–153.5 mSv), of which 91% (range, 34%–98%) derived from catheterizations, 31% (range, 8%–89%) of the exposure occurred during the transplant admission, 59% (range, 11%–88%) during planned follow-up, and 3% (0%–56%) during unplanned follow-up. Older age at transplant was a risk factor for increased exposure (p = 0.006). When adjusted for age, a trend toward increased exposure was shown for congenital heart disease as the indication for transplant (p = 0.08), pre-sensitization (p = 0.12), and positive crossmatch (p = 0.09). Conclusions Pediatric heart transplant patients are exposed to significant amounts of ionizing radiation during the first post-transplant year, most during scheduled catheterization. As survival improves, considering the long-term risks associated with these levels of exposure is important.

Alicia McDonnell; Tacy E. Downing; Xiaowei Zhu; Rachel Ryan; Joseph W. Rossano; Andrew C. Glatz

2014-01-01T23:59:59.000Z

83

73Exploring Radiation in your Life Our exposure to many unavoidable sources of radiation is a fact of life, and one  

E-Print Network [OSTI]

and determine the consequences of human radiation impacts, have estimated that the average human accumulates to the daily radiation dose change when the Fukushima source is included in terms of microSeiverts/day? Space73Exploring Radiation in your Life Our exposure to many unavoidable sources of radiation is a fact

84

Response of intracerebral human glioblastoma xenografts to multifraction radiation exposures  

SciTech Connect (OSTI)

Purpose: We investigated the effects of fractionated radiation treatments on the life spans of athymic rats bearing intracerebral brain tumors. Methods and Materials: U-251 MG or U-87 MG human glioblastoma cells were implanted into the brains of athymic rats, and the resulting tumors were irradiated once daily with various doses of ionizing radiation for 5 consecutive days or for 10 days with a 2-day break after Day 5. Results: Five daily doses of 1 and 1.5 Gy, and 10 doses of 0.75 and 1 Gy, cured some U-251 MG tumors. However, five daily doses of 0.5 Gy increased the survival time of animals bearing U-251 MG tumors 5 days without curing any animals of their tumors. Ten doses of 0.3 Gy given over 2 weeks extended the lifespan of the host animals 9 days without curing any animals. For U-87 MG tumors, 5 daily doses of 3 Gy produced an increased lifespan of 8 days without curing any animals, and 10 doses of 1 Gy prolonged lifespan 5.5 days without curing any animals. The differences in extension of life span between the 5- and 10-fraction protocols were minor for either tumor type. Conclusion: The finding that the U-251 MG tumors are more sensitive than U-87 MG tumors, despite the fact that U-251 MG tumors contain many more hypoxic cells than U-87 MG tumors, suggests the intrinsic cellular radiosensitivities of these cell lines are more important than hypoxia in determining their in vivo radiosensitivities.

Ozawa, Tomoko [Brain Tumor Research Center, Department of Neurological Surgery, University of California San Francisco, San Francisco, CA (United States); Faddegon, Bruce A. [Department of Radiation Oncology, University of California San Francisco, San Francisco, CA (United States); Hu, Lily J. [Brain Tumor Research Center, Department of Neurological Surgery, University of California San Francisco, San Francisco, CA (United States); Bollen, Andrew W. [Department of Pathology, University of California San Francisco, San Francisco, CA (United States); Lamborn, Kathleen R. [Brain Tumor Research Center, Department of Neurological Surgery, University of California San Francisco, San Francisco, CA (United States); Deen, Dennis F. [Brain Tumor Research Center, Department of Neurological Surgery, University of California San Francisco, San Francisco, CA (United States) and Department of Radiation Oncology, University of California San Francisco, San Francisco, CA (United States)]. E-mail: ddeen@itsa.ucsf.edu

2006-09-01T23:59:59.000Z

85

Medical management of radiation accidents: capabilities and deployment principles of the Bundeswehr Institute of Radiobiology  

Science Journals Connector (OSTI)

......radiation-induced health impairments can be misinterpreted...of radiation-induced health impairments resulted...detection and treatment of health hazards after exposure...environment (e.g. depleted uranium), to ultraviolet radiation......

Harald Dörr; Viktor Meineke

2012-10-01T23:59:59.000Z

86

Occupational Radiation Exposure at Commercial Nuclear Power Reactors and Other Facilities 2008  

SciTech Connect (OSTI)

This report summarizes the occupational exposure data that are maintained in the U.S. Nuclear Regulatory Commission (NRC) Radiation Exposure Information and Reporting System (REIRS). The bulk of the information contained in the report was compiled from the 2008 annual reports submitted by five of the seven categories1 of NRC licensees subject to the reporting requirements of 10 CFR 20.2206. The annual reports submitted by these licensees consist of radiation exposure records for each monitored individual. These records are analyzed for trends and presented in this report in terms of collective dose and the distribution of dose among the monitored individuals. Because there are no geologic repositories for high-level waste currently licensed and no low-level waste disposal facilities in operation, only five categories will be considered in this report.

U.S. Nuclear Regulatory Commission, Office of Nuclear Regulatory Research

2009-12-01T23:59:59.000Z

87

Assessment of the Technologies for Molecular Biodosimetry for Human Low-Dose Radiation Exposure Symposium  

SciTech Connect (OSTI)

Exposure to ionizing radiation produces few immediate outwardly-visible clinical signs, yet, depending on dose, can severely damage vital physiological functions within days to weeks and produce long-lasting health consequences among survivors. In the event of a radiological accident, the rapid evaluation of the individual absorbed dose is paramount to discriminate the worried but unharmed from those individuals who must receive medical attention. Physical, clinical and biological dosimetry are usually combined for the best dose assessment. However, because of the practical limits of physical and clinical dosimetry, many attempts have been made to develop a dosimetry system based on changes in biological parameters, including techniques for hematology, biochemistry, immunology, cytogenetics, etc. Lymphocyte counts and chromosome aberrations analyses are among the methods that have been routinely used for estimating radiation dose. However, these assays require several days to a week to be completed and therefore cannot be used to obtain a fast estimate of the dose during the first few days after exposure when the information would be most critical for identifying victims of radiation accidents who could benefit the most by medical intervention. The steadily increasing sophistication in our understanding of the early biochemical responses of irradiated cells and tissues provides the opportunity for developing mechanism-based biosignatures of exposure. Compelling breakthroughs have been made in the technologies for genome-scale analysis of cellular transcriptional and proteomic profiles. There have also been major strides in the mechanistic understanding of the early events in DNA damage and radiation damage products, as well as in the cellular pathways that lead to radiation injury. New research with genomic- and proteomic-wide tools is showing that within minutes to hours after exposure to ionizing radiation protein machines are modified and activated, and large-scale changes occur in the gene expression profile involving a broad variety of cell-process pathways after a wide range of both low (<10 cGy) and high dose (>10 cGy) exposures. Evaluation of these potential gene and protein biomarkers for early and late diagnostic information will be critical for determining the efficacy of the signatures to both low and high dose IR exposures. Also needed are approaches that enable rapid handling and processing for mass-casualty and population triage scenarios. Development of in vivo model system will be crucial for validating both the biological and the instrumentation for biodosimetry. Such studies will also help further understanding of the molecular mechanisms of the biological effects of radiation and the differences of responses due to individual genetic variation.

Matthew A. Coleman Ph.D.; Narayani Ramakrishnan, Ph.D.; Sally A. Amundson; James D. Tucker, Ph.D.; Stephen D. Dertinger, Ph.D.; Natalia I. Ossetrova, Ph.D.; Tao Chen

2009-11-16T23:59:59.000Z

88

Radiological protection from radioactive waste management in existing exposure situations resulting from a nuclear accident  

Science Journals Connector (OSTI)

......people living in long-term-contaminated...Radioactive waste management in...longer-term storage and appropriate...appropriate for the long-term assessment...long-lived radioactive wastes in planned exposure...People Living in Long-term Contaminated...from Radioactive Waste Management in......

Daisuke Sugiyama; Takatoshi Hattori

2013-01-01T23:59:59.000Z

89

Natural radioactivity and radiation exposure at the Minjingu phosphate mine in Tanzania  

Science Journals Connector (OSTI)

In this paper the results of studies on activity and ambient radiation background around the Minjingu phosphate mine in Tanzania are presented. The outdoor dose rate in air and the activity levels of samples from and outside the mine were determined by thermoluminiscent dosimeters and a gamma spectrometer system with a Hyper Pure germanium detector system respectively. The determination of activity was made for the 226 Ra, 228 Ra, 228 Th and 40 K radionuclides. High concentrations of radium-226 were observed in phosphate rock (5760±107 Bq kg-1 ), waste rock (4250±98 Bq kg-1 ), wild leaf vegetation (650±11 Bq kg-1 ), edible leaf vegetation (393±9 Bq kg-1 ), surface water (4.7±0.4 mBq l-1 ) and chicken feed (4±0.1 Bq kg-1 ) relative to selected control sites. These findings suggest a radiation health risk particularly when the samples are ingested, because the internal exposure may give rise to an effective dose exceeding 20 mSv which is the annual limit of intake of natural radionuclides recommended by the ICRP. On the other hand, the radiation dose from ambient air over five years at the phosphate mine ranges from 1375 to 1475 nGy h-1 with an average of 1415 nGy h-1 . The average is about 28 times that of the global average background radiation from terrestrial sources, and about 12 times the allowed average dose limit for public exposure over five consecutive years. Future investigations on the occupancy factor, external dose rate and radon and radon progeny exposure in drinking water, buildings and activity content in the locally grown foodstuffs are proposed, for the realistic quantification of the overall exposure of workers and public at Minjingu, and remedial measures for future radiation safety.

Firmi P Banzi; Leonard D Kifanga; Felician M Bundala

2000-01-01T23:59:59.000Z

90

85Kr management trade-offs: a perspective to total radiation dose commitment  

SciTech Connect (OSTI)

Radiological consequences arising from the trade-offs for /sup 85/Kr waste management from possible nuclear fuel resource recovery activities have been investigated. The reference management technique is to release all the waste gas to the atmosphere where it is diluted and dispersed. A potential alternative is to collect, concentrate, package and submit the gas to long-term storage. This study compares the radiation dose commitment to the public and to the occupationally exposed work force from these alternatives. The results indicate that it makes little difference to the magnitude of the world population dose whether /sup 85/Kr is captured and stored or chronically released to the environment. Further, comparisons of radiation exposures (for the purpose of estimating health effects) at very low dose rates to very large populations with exposures to a small number of occupationally exposed workers who each receive much higher dose rates may be misleading. Finally, cost studies (EPA 1976 and DOE 1979a) show that inordinate amounts of money will be required to lower this already extremely small 80-year cumulative world population dose of 0.05 mrem/person (<0.001% of natural background radiation for the same time period).

Mellinger, P.J.; Hoenes, G.R.; Brackenbush, L.W.; Greenborg, J.

1980-01-01T23:59:59.000Z

91

On the Use of SRIM/TRIM for Computing Radiation Damage Exposure  

SciTech Connect (OSTI)

The SRIM (formerly TRIM) Monte Carlo simulation code is widely used to compute a number of parameters relevant to ion beam implantation and ion beam processing of materials. It also has the capability to compute a common radiation damage exposure unit known as atomic displacements per atom (dpa). Since dpa is a standard measure of primary radiation damage production, most researchers who employ ion beams as a tool for inducing radiation damage in materials use SRIM to determine the dpa associated with their irradiations. The use of SRIM for this purpose has been evaluated and comparisons with an internationally-recognized standard definition of dpa, as well as more detailed atomistic simulations of atomic displacement cascades have been made. Differences between the standard and SRIM-based dpa are discussed and recommendations for future usage of SRIM in radiation damage studies are made.

Stoller, Roger E [ORNL; Toloczko, M [Pacific Northwest National Laboratory (PNNL); Was, Gary [University of Michigan; Certain, Alicia [Pacific Northwest National Laboratory (PNNL); Dwaraknath, Shyam [University of Michigan

2013-01-01T23:59:59.000Z

92

Radiation Environments and Exposure Considerations for the Multi?Mission Radioisotope Thermoelectric Generator  

Science Journals Connector (OSTI)

The Multi?Mission Radioisotope Thermoelectric Generator (MMRTG) is the next generation (RTG) being developed by DOE to provide reliable long?life electric power for NASA’s planetary exploration programs. The MMRTG is being developed by Pratt & Whitney Rocketdyne and Teledyne Energy Systems Incorporated (TESI) for use on currently planned and projected flyby orbital and planet landing missions. This is a significant departure from the design philosophy of the past which was to match specific mission requirements to RTG design capabilities. Undefined mission requirements provide a challenge to system designers by forcing them to put a design envelope around “all possible missions”. These multi?mission requirements include internal and external radiation sources. Internal sources include the particles ejected by decaying Pu?238 and its daughters plus particles resulting from the interaction of these particles with other MMRTG materials. External sources include the full spectrum of charged particle radiation surrounding planets with magnetic fields and the surfaces of extraterrestrial objects not shielded by magnetic fields. The paper presents the results of investigations into the environments outlined above and the impact of radiation exposure on potential materials to be used on MMRTG and ground support personnel. Mission requirements were also reviewed to evaluate total integrated dose and to project potential shielding requirements for materials. Much of the information on mission shielding requirements was provided by NASA’s Jet Propulsion Laboratory. The primary result is an ionizing radiation design curve which indicates the limits to which a particular mission can take the MMRTG in terms of ionizing radiation exposure. Estimates of personnel radiation exposure during ground handling are also provided.

William M. Kelly; Nora M. Low; Andrew Zillmer; Gregory A. Johnson; Eugene Normand

2006-01-01T23:59:59.000Z

93

Radiation Environments and Exposure Considerations for the Multi-Mission Radioisotope Thermoelectric Generator  

SciTech Connect (OSTI)

The Multi-Mission Radioisotope Thermoelectric Generator (MMRTG) is the next generation (RTG) being developed by DOE to provide reliable, long-life electric power for NASA's planetary exploration programs. The MMRTG is being developed by Pratt and Whitney Rocketdyne and Teledyne Energy Systems Incorporated (TESI) for use on currently planned and projected flyby, orbital and planet landing missions. This is a significant departure from the design philosophy of the past which was to match specific mission requirements to RTG design capabilities. Undefined mission requirements provide a challenge to system designers by forcing them to put a design envelope around 'all possible missions'. These multi-mission requirements include internal and external radiation sources. Internal sources include the particles ejected by decaying Pu-238 and its daughters plus particles resulting from the interaction of these particles with other MMRTG materials. External sources include the full spectrum of charged particle radiation surrounding planets with magnetic fields and the surfaces of extraterrestrial objects not shielded by magnetic fields. The paper presents the results of investigations into the environments outlined above and the impact of radiation exposure on potential materials to be used on MMRTG and ground support personnel. Mission requirements were also reviewed to evaluate total integrated dose and to project potential shielding requirements for materials. Much of the information on mission shielding requirements was provided by NASA's Jet Propulsion Laboratory. The primary result is an ionizing radiation design curve which indicates the limits to which a particular mission can take the MMRTG in terms of ionizing radiation exposure. Estimates of personnel radiation exposure during ground handling are also provided.

Kelly, William M.; Low, Nora M.; Zillmer, Andrew; Johnson, Gregory A. [Pratt and Whitney Rocketdyne, 6633 Canoga Avenue, Canoga Park, CA 91309 (United States); Normand, Eugene [Boeing Radiation Effects Laboratory, P.O. Box 3707, M/S 2T-50, Seattle, WA 98124-22079 (United States)

2006-01-20T23:59:59.000Z

94

Human exposure to high natural background radiation: what can it teach us about  

Science Journals Connector (OSTI)

Natural radiation is the major source of human exposure to ionising radiation, and its largest contributing component to effective dose arises from inhalation of 222Rn and its radioactive progeny. However, despite extensive knowledge of radiation risks gained through epidemiologic investigations and mechanistic considerations, the health effects of chronic low-level radiation exposure are still poorly understood. The present paper reviews the possible contribution of studies of populations living in high natural background radiation (HNBR) areas (Guarapari, Brazil; Kerala, India; Ramsar, Iran; Yangjiang, China), including radon-prone areas, to low dose risk estimation. Much of the direct information about risk related to HNBR comes from case–control studies of radon and lung cancer, which provide convincing evidence of an association between long-term protracted radiation exposures in the general population and disease incidence. The success of these studies is mainly due to the careful organ dose reconstruction (with relatively high doses to the lung), and to the fact that large-scale collaborative studies have been conducted to maximise the statistical power and to ensure the systematic collection of information on potential confounding factors. In contrast, studies in other (non-radon) HNBR areas have provided little information, relying mainly on ecological designs and very rough effective dose categorisations. Recent steps taken in China and India to establish cohorts for follow-up and to conduct nested case–control studies may provide useful information about risks in the future, provided that careful organ dose reconstruction is possible and information is collected on potential confounding factors.

Jolyon H Hendry; Steven L Simon; Andrzej Wojcik; Mehdi Sohrabi; Werner Burkart; Elisabeth Cardis; Dominique Laurier; Margot Tirmarche; Isamu Hayata

2009-01-01T23:59:59.000Z

95

Fundamentals of health physics for the radiation-protection officer  

SciTech Connect (OSTI)

The contents of this book on health physics include chapters on properties of radioactive materials, radiation instrumentation, radiation protection programs, radiation survey programs, internal exposure, external exposure, decontamination, selection and design of radiation facilities, transportation of radioactive materials, radioactive waste management, radiation accidents and emergency preparedness, training, record keeping, quality assurance, and appraisal of radiation protection programs. (ACR)

Murphy, B.L.; Traub, R.J.; Gilchrist, R.L.; Mann, J.C.; Munson, L.H.; Carbaugh, E.H.; Baer, J.L.

1983-03-01T23:59:59.000Z

96

Education and training for radiation emergency medical management in Japan  

Science Journals Connector (OSTI)

Abstract. The radiation emergency medical management are very rarely called upon. The points of our greatest concern on those occasions, are traumatized patients contaminated with radioactive substances. Such patients are in need of emergency medical care, where the medical team is inexperienced in treating cases of radiation contamination. After the criticality accident of a uranium fuel fabrication facility at Tokai-mura in 1999, the medical system for radiation accidents in Japan has thoroughly changed. On request by the Ministry of Education, Culture, Sports, Science and Technology, we have conducted medical education and training on how to treat emergency cases of radiation accidents for the people concerned with emergency medicine, namely medical doctors, nurses, radiation technicians, emergency rescue squads, and health physicists in nuclear power plants. Education and training have been carried out repeatedly at 35 cities and towns for the last 5 years. The contents of education and training were lectures, simulation exercises and practical exercises. As a result, more than 80% of medical facilities held responsible for the primary treatment of victims of radiation accidents replied they can handle the cases with skill and knowledge in treating traumatized patients accompanied by radiation contamination without feeling undue stress of radiation. Education and training are continually conducted in cooperation with the experts of radiation emergency medicine such as Nagasaki University.

Tatsuya Kinugasa

2007-01-01T23:59:59.000Z

97

Mesenchymal Stem Cells Retain Their Defining Stem Cell Characteristics After Exposure to Ionizing Radiation  

SciTech Connect (OSTI)

Purpose: Mesenchymal stem cells (MSCs) have the ability to migrate to lesion sites and undergo differentiation into functional tissues. Although this function may be important for tissue regeneration after radiation therapy, the influence of ionizing radiation (IR) on cellular survival and the functional aspects of differentiation and stem cell characteristics of MSCs have remained largely unknown. Methods and Materials: Radiation sensitivity of human primary MSCs from healthy volunteers and primary human fibroblast cells was examined, and cellular morphology, cell cycle effects, apoptosis, and differentiation potential after exposure to IR were assessed. Stem cell gene expression patterns after exposure to IR were studied using gene arrays. Results: MSCs were not more radiosensitive than human primary fibroblasts, whereas there were considerable differences regarding radiation sensitivity within individual MSCs. Cellular morphology, cytoskeletal architecture, and cell motility were not markedly altered by IR. Even after high radiation doses up to 10 Gy, MSCs maintained their differentiation potential. Compared to primary fibroblast cells, MSCs did not show an increase in irradiation-induced apoptosis. Gene expression analyses revealed an upregulation of various genes involved in DNA damage response and DNA repair, but expression of established MSC surface markers appeared only marginally influenced by IR. Conclusions: These data suggest that human MSCs are not more radiosensitive than differentiated primary fibroblasts. In addition, upon photon irradiation, MSCs were able to retain their defining stem cell characteristics both on a functional level and regarding stem cell marker expression.

Nicolay, Nils H., E-mail: n.nicolay@dkfz.de [Department of Radiation Oncology, Heidelberg University Hospital, Heidelberg (Germany); Department of Molecular and Radiation Oncology, German Cancer Research Center, Heidelberg (Germany); Sommer, Eva; Lopez, Ramon; Wirkner, Ute [Department of Molecular and Radiation Oncology, German Cancer Research Center, Heidelberg (Germany); Trinh, Thuy [Department of Radiation Oncology, Heidelberg University Hospital, Heidelberg (Germany); Department of Molecular and Radiation Oncology, German Cancer Research Center, Heidelberg (Germany); Sisombath, Sonevisay [Department of Molecular and Radiation Oncology, German Cancer Research Center, Heidelberg (Germany); Debus, Jürgen [Department of Radiation Oncology, Heidelberg University Hospital, Heidelberg (Germany); Ho, Anthony D.; Saffrich, Rainer [Department of Hematology and Oncology, Heidelberg University Hospital, Heidelberg (Germany); Huber, Peter E. [Department of Radiation Oncology, Heidelberg University Hospital, Heidelberg (Germany); Department of Molecular and Radiation Oncology, German Cancer Research Center, Heidelberg (Germany)

2013-12-01T23:59:59.000Z

98

Influence of organs in the ICRP's remainder on effective dose equivalent computed for diagnostic radiation exposures  

SciTech Connect (OSTI)

The ICRP effective dose equivalent has been compared with a weighted dose equivalent, computed by treating the entire remainder instead of the sample of five remainder organs in the ICRP method as uniformly radiosensitive, for dose distributions from three common diagnostic exposures: chest, dental full-mouth and dental panoramic. Complete dose distributions were computed by a Monte Carlo model. In all three cases the effective dose equivalent was greater than the weighted dose equivalent. The difference was only 20% for the chest exam but was more than fivefold for both dental exposures. Dose distributions for the dental exposures were less homogeneous than for the chest examination. Selection of organs to be included in the remainder markedly affects the effective dose equivalent. In the case of highly inhomogeneous dose distributions, the effective dose equivalent probably significantly over-estimates radiation detriment.

Gibbs, S.J.

1989-04-01T23:59:59.000Z

99

Framework of Radiation Safety Management in Japan: Laws, Administrative Agencies, and Supporting Associations  

Science Journals Connector (OSTI)

Radiation safety management in Japan stands upon a global framework. The concerted ... Nations Scientific Committee on the Effects of Atomic Radiation (UNSCEAR), International Atomic Energy Agency ( ... Health Or...

Naoki Matsuda; Masahiro Yoshida; Hideaki Takao…

2009-01-01T23:59:59.000Z

100

Alpha Radiation  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Basics of Radiation Basics of Radiation Gamma Radiation and X-Rays Beta Radiation Alpha Radiation Irradiation Radioactive Contamination Definitions Detection Measurement Safety Around Radiation Sources Types of Radiation Exposure Managing Radiation Emergencies Basics of Radiation Characteristics of Alpha Radiation 1. Alpha radiation is not able to penetrate skin. 2. Alpha-emitting materials can be harmful to humans if the materials are inhaled, swallowed, or absorbed through open wounds. 3. A variety of instruments have been designed to measure alpha radiation. Special training in use of these instruments is essential for making accurate measurements. 4. A civil defense instrument (CD V-700) cannot detect the presence of radioactive materials that produce alpha radiation unless the radioactive materials also produce beta and/or gamma radiation.

Note: This page contains sample records for the topic "radiation exposure managing" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
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to obtain the most current and comprehensive results.


101

Uncertainties in estimating health risks associated with exposure to ionising radiation  

Science Journals Connector (OSTI)

The information for the present discussion on the uncertainties associated with estimation of radiation risks and probability of disease causation was assembled for the recently published NCRP Report No. 171 on this topic. This memorandum provides a timely overview of the topic, given that quantitative uncertainty analysis is the state of the art in health risk assessment and given its potential importance to developments in radiation protection. Over the past decade the increasing volume of epidemiology data and the supporting radiobiology findings have aided in the reduction of uncertainty in the risk estimates derived. However, it is equally apparent that there remain significant uncertainties related to dose assessment, low dose and low dose-rate extrapolation approaches (e.g. the selection of an appropriate dose and dose-rate effectiveness factor), the biological effectiveness where considerations of the health effects of high-LET and lower-energy low-LET radiations are required and the transfer of risks from a population for which health effects data are available to one for which such data are not available. The impact of radiation on human health has focused in recent years on cancer, although there has been a decided increase in the data for noncancer effects together with more reliable estimates of the risk following radiation exposure, even at relatively low doses (notably for cataracts and cardiovascular disease). New approaches for the estimation of hereditary risk have been developed with the use of human data whenever feasible, although the current estimates of heritable radiation effects still are based on mouse data because of an absence of effects in human studies. Uncertainties associated with estimation of these different types of health effects are discussed in a qualitative and semi-quantitative manner as appropriate. The way forward would seem to require additional epidemiological studies, especially studies of low dose and low dose-rate occupational and perhaps environmental exposures and for exposures to x rays and high-LET radiations used in medicine. The development of models for more reliably combining the epidemiology data with experimental laboratory animal and cellular data can enhance the overall risk assessment approach by providing biologically refined data to strengthen the estimation of effects at low doses as opposed to the sole use of mathematical models of epidemiological data that are primarily driven by medium/high doses. NASA's approach to radiation protection for astronauts, although a unique occupational group, indicates the possible applicability of estimates of risk and their uncertainty in a broader context for developing recommendations on: (1) dose limits for occupational exposure and exposure of members of the public; (2) criteria to limit exposures of workers and members of the public to radon and its short-lived decay products; and (3) the dosimetric quantity (effective dose) used in radiation protection.

R Julian Preston; John D Boice Jr; A Bertrand Brill; Ranajit Chakraborty; Rory Conolly; F Owen Hoffman; Richard W Hornung; David C Kocher; Charles E Land; Roy E Shore; Gayle E Woloschak

2013-01-01T23:59:59.000Z

102

EPIDEMIOLOGICAL STUDIES ON RADIATION CARCINOGENESIS IN HUMAN POPULATIONS FOLLOWING ACUTE EXPOSURE: NUCLEAR EXPLOSIONS AND MEDICAL RADIATION  

E-Print Network [OSTI]

estimation of the carcinogenic of low-dose, low-LET radiationradiation uoses, close rates, and LET to enable risk tions occur estimation at doses,radiation-induced cancer necessarily be based primarily on human dose-incidence data. in man must However, risk estimation

Fabrikant, J.I.

2010-01-01T23:59:59.000Z

103

Estimation of the radiation exposure of a chest pain protocol with ECG-gating in dual-source computed tomography  

Science Journals Connector (OSTI)

The estimation of the radiation exposure of the protocols we used resulted in effective doses differing among genders: for women, the estimated effective doses were 14.0% higher compared with men...

Dominik Ketelsen; Marie H. Luetkhoff; Christoph Thomas…

2009-01-01T23:59:59.000Z

104

Results of calculations of external gamma radiation exposure rates from fallout and related radionuclide compositions. Operation Teapot, 1955  

SciTech Connect (OSTI)

This report presents data on calculated gamma radiation exposure rates and ground deposition of related radionuclides resulting from events that deposited detectable radioactivity outside the Nevada Test Site complex.

Hicks, H.G.

1981-07-01T23:59:59.000Z

105

Exposure assessment of acrylates/methacrylates in radiation-cured applications  

SciTech Connect (OSTI)

Occupational exposures to radiation-cured acrylates/methacrylates during their processing and use in coatings, inks, and adhesives were evaluated in 12 walk-through surveys at formulator and applicator sites. Inhalation and dermal-exposure routes were studied. According to the authors, the basic process used to formulate coatings, inks, and adhesives consists of blending raw materials in closed mixing vessels using local exhaust ventilation in the form of elephant trunks at vessel charging and packaging locations. Application methods surveyed included reverse-roll coaters, direct roll coaters, curtain/rain coaters, laminators, pneumatic injection, spray guns, and manual application. At the sites surveyed, the number of workers potentially exposed at each site ranged from two to 142. Process operators at applicator sites had the greatest potential for dermal exposure. Generally, the potential for inhalation exposure was low due to low volatility of the multifunctional acrylates/methacrylates used in the formulations. No reliable air-monitoring data were available at any site. Respirator use was limited and sporadic.

Not Available

1987-09-25T23:59:59.000Z

106

PLANNING TOOLS FOR ESTIMATING RADIATION EXPOSURE AT THE NATIONAL IGNITION FACILITY  

SciTech Connect (OSTI)

A set of computational tools was developed to help estimate and minimize potential radiation exposure to workers from material activation in the National Ignition Facility (NIF). AAMI (Automated ALARA-MCNP Interface) provides an efficient, automated mechanism to perform the series of calculations required to create dose rate maps for the entire facility with minimal manual user input. NEET (NIF Exposure Estimation Tool) is a web application that combines the information computed by AAMI with a given shot schedule to compute and display the dose rate maps as a function of time. AAMI and NEET are currently used as work planning tools to determine stay-out times for workers following a given shot or set of shots, and to help in estimating integrated doses associated with performing various maintenance activities inside the target bay. Dose rate maps of the target bay were generated following a low-yield 10{sup 16} D-T shot and will be presented in this paper.

Verbeke, J; Young, M; Brereton, S; Dauffy, L; Hall, J; Hansen, L; Khater, H; Kim, S; Pohl, B; Sitaraman, S

2010-10-22T23:59:59.000Z

107

Human In vivo Dose-Response to Controlled, Low-Dose Low Linear Energy Transfer Ionizing Radiation Exposure  

Science Journals Connector (OSTI)

...biotinylated nucleotide analogue/ribonucleotide mix. The biotinylated cRNA targets were then...dose-response to controlled, low-dose low linear energy transfer ionizing radiation exposure. | The effect of low doses of low-linear energy transfer (photon) ionizing radiation...

Zelanna Goldberg; David M. Rocke; Chad Schwietert; Susanne R. Berglund; Alison Santana; Angela Jones; Jörg Lehmann; Robin Stern; Ruixiao Lu; and Christine Hartmann Siantar

2006-06-15T23:59:59.000Z

108

Web-based tools for quality assurance and radiation protection in diagnostic radiology  

Science Journals Connector (OSTI)

......relating to radiation protection...physicist, radiation safety officer, other...use of any software other than...of the QADDS software package. ACKNOWLEDGEMENTS...exposure to radiation in medical...Radiation safety management......

B. M. Moores; P. Charnock; M. Ward

2010-01-01T23:59:59.000Z

109

Comparison of radiation exposure and associated radiation-induced cancer risks from mammography and molecular imaging of the breast  

SciTech Connect (OSTI)

Purpose: Recent studies have raised concerns about exposure to low-dose ionizing radiation from medical imaging procedures. Little has been published regarding the relative exposure and risks associated with breast imaging techniques such as breast specific gamma imaging (BSGI), molecular breast imaging (MBI), or positron emission mammography (PEM). The purpose of this article was to estimate and compare the risks of radiation-induced cancer from mammography and techniques such as PEM, BSGI, and MBI in a screening environment. Methods: The authors used a common scheme for all estimates of cancer incidence and mortality based on the excess absolute risk model from the BEIR VII report. The lifetime attributable risk model was used to estimate the lifetime risk of radiation-induced breast cancer incidence and mortality. All estimates of cancer incidence and mortality were based on a population of 100 000 females followed from birth to age 80 and adjusted for the fraction that survives to various ages between 0 and 80. Assuming annual screening from ages 40 to 80 and from ages 50 to 80, the cumulative cancer incidence and mortality attributed to digital mammography, screen-film mammography, MBI, BSGI, and PEM was calculated. The corresponding cancer incidence and mortality from natural background radiation was calculated as a useful reference. Assuming a 15%-32% reduction in mortality from screening, the benefit/risk ratio for the different imaging modalities was evaluated. Results: Using conventional doses of 925 MBq Tc-99m sestamibi for MBI and BSGI and 370 MBq F-18 FDG for PEM, the cumulative cancer incidence and mortality were found to be 15-30 times higher than digital mammography. The benefit/risk ratio for annual digital mammography was >50:1 for both the 40-80 and 50-80 screening groups, but dropped to 3:1 for the 40-49 age group. If the primary use of MBI, BSGI, and PEM is in women with dense breast tissue, then the administered doses need to be in the range 75-150 MBq for Tc-99m sestamibi and 35 MBq-70 MBq for F-18 FDG in order to obtain benefit/risk ratios comparable to those of mammography in these age groups. These dose ranges should be achievable with enhancements to current technology while maintaining a reasonable examination time. Conclusions: The results of the dose estimates in this study clearly indicate that if molecular imaging techniques are to be of value in screening for breast cancer, then the administered doses need to be substantially reduced to better match the effective doses of mammography.

O'Connor, Michael K.; Li Hua; Rhodes, Deborah J.; Hruska, Carrie B.; Clancy, Conor B.; Vetter, Richard J. [Department of Radiology, Mayo Clinic, Rochester, Minnesota 55905 (United States); Department of Medicine, Mayo Clinic, Rochester, Minnesota 55905 (United States); Department of Radiology, Mayo Clinic, Rochester, Minnesota 55905 (United States); Department of Medical Physics, St. James's Hospital, Dublin (Ireland); Radiation Safety, Mayo Clinic, Rochester, Minnesota 55905 (United States)

2010-12-15T23:59:59.000Z

110

Corporate Functional Management Evaluation of the LLNL Radiation Safety Organization  

SciTech Connect (OSTI)

A Corporate Assess, Improve, and Modernize review was conducted at Lawrence Livermore National Laboratory (LLNL) to evaluate the LLNL Radiation Safety Program and recommend actions to address the conditions identified in the Internal Assessment conducted July 23-25, 2007. This review confirms the findings of the Internal Assessment of the Institutional Radiation Safety Program (RSP) including the noted deficiencies and vulnerabilities to be valid. The actions recommended are a result of interviews with about 35 individuals representing senior management through the technician level. The deficiencies identified in the LLNL Internal Assessment of the Institutional Radiation Safety Program were discussed with Radiation Safety personnel team leads, customers of Radiation Safety Program, DOE Livermore site office, and senior ES&H management. There are significant issues with the RSP. LLNL RSP is not an integrated, cohesive, consistently implemented program with a single authority that has the clear roll and responsibility and authority to assure radiological operations at LLNL are conducted in a safe and compliant manner. There is no institutional commitment to address the deficiencies that are identified in the internal assessment. Some of these deficiencies have been previously identified and corrective actions have not been taken or are ineffective in addressing the issues. Serious funding and staffing issues have prevented addressing previously identified issues in the Radiation Calibration Laboratory, Internal Dosimetry, Bioassay Laboratory, and the Whole Body Counter. There is a lack of technical basis documentation for the Radiation Calibration Laboratory and an inadequate QA plan that does not specify standards of work. The Radiation Safety Program lack rigor and consistency across all supported programs. The implementation of DOE Standard 1098-99 Radiological Control can be used as a tool to establish this consistency across LLNL. The establishment of a site wide ALARA Committee and administrative control levels would focus attention on improved processes. Currently LLNL issues dosimeters to a large number of employees and visitors that do not enter areas requiring dosimetry. This includes 25,000 visitor TLDs per year. Dosimeters should be issued to only those personnel who enter areas where dosimetry is required.

Sygitowicz, L S

2008-03-20T23:59:59.000Z

111

Radiation Exposures Associated with Shipments of Foreign Research Reactor Spent Nuclear Fuel  

SciTech Connect (OSTI)

Experience has shown that the analyses of marine transport of spent fuel in the Environmental Impact Statement (EIS) were conservative. It is anticipated that for most shipments. The external dose rate for the loaded transportation cask will be more in line with recent shipments. At the radiation levels associated with these shipments, we would not expect any personnel to exceed radiation exposure limits for the public. Package dose rates usually well below the regulatory limits and personnel work practices following ALARA principles are keeping human exposures to minimal levels. However, the potential for Mure shipments with external dose rates closer to the exclusive-use regulatory limit suggests that DOE should continue to provide a means to assure that individual crew members do not receive doses in excess of the public dose limits. As a minimum, the program will monitor cask dose rates and continue to implement administrative procedures that will maintain records of the dose rates associated with each shipment, the vessel used, and the crew list for the vessel. DOE will continue to include a clause in the contract for shipment of the foreign research reactor spent nuclear fuel requiring that the Mitigation Action Plan be followed.

MASSEY,CHARLES D.; MESSICK,C.E.; MUSTIN,T.

1999-11-01T23:59:59.000Z

112

Central dose data management and analysis in IT-driven radiation protection strategies  

Science Journals Connector (OSTI)

......at the very heart of the provision of radiation safety services or, alternatively, placing radiation safety management at the heart of radiological practice. MATERIALS AND METHODS Software development During the summer of 1993......

M. Ward; D. Hughes; P. Connolly; B. M. Moores

2005-05-01T23:59:59.000Z

113

Radiation exposure and central nervous system cancers: A case-control study among workers at two nuclear facilities  

SciTech Connect (OSTI)

A nested case-control study was conducted among workers employed between 1943 and 1977 at two nuclear facilities to investigate the possible association of primary malignant neoplasms of the central nervous system (CNS) with occupational exposure to ionizing radiation from external and internal sources. Eighty-nine white male and female workers, who according to the information on death certificates dies of primary CNS cancers, were identified as cases. Four matched controls were selected for each case. External radiation exposure data were available from film badge readings for individual workers, whereas radiation dose to lung from internally deposited radionuclides, mainly uranium, was estimated from area and personnel monitoring data and was used in analyses in lieu of the dose to the brain. Matched sets were included in the analyses only if information was available for the case and at least one of the corresponding controls. Thus, the analyses of external radiation included 27 cases and 90 matched controls, and 47 cases and 120 matched controls were analyzed for the effects of radiation from internally deposited uranium. No association was observed between deaths fron CNS cancers and occupational exposure to ionizing radiation from external or internal sources. However, due to the small number of monitored subjects and low doses, a weak association could not be ruled out. 43 refs., 1 fig., 15 tabs.

Carpenter, A.V.; Flanders, W.D.; Frome, E.L.; Crawford-Brown, D.J.; Fry, S.A.

1987-03-01T23:59:59.000Z

114

Analysis of radiation exposure for naval units of Operation CROSSROADS. Volume 1. Basic report. Technical report  

SciTech Connect (OSTI)

External radiation doses are reconstructed for crews of support and target ships of Joint Task Force One at Operation CROSSROADS, 1946. Volume I describes the reconstruction methodology, which consists of modeling the radiation environment, to include the radioactivity of lagoon water, target ships, and support ship contamination; retracing ship paths through this environment; and calculating the doses to shipboard personnel. The USS RECLAIMER, a support ship, is selected as a representative ship to demonstrate this methodology. Doses for all other ships are summarized. Volume II (Appendix A) details the results for target ship personnel. Volume III (Appendix B) details the results for support ship personnel. Calculated doses for more than 36,000 personnel aboard support ships while at Bikini range from zero to 1.7 rem. Of those approximately 34,000 are less than 0.5 rem. From the models provided, doses due to target ship reboarding and doses accrued after departure from Bikini can be calculated, based on the individual circumstances of exposure.

Weitz, R.; Thomas, C.; Klemm, J.; Stuart, J.; Knowles, M.

1982-03-03T23:59:59.000Z

115

Assessment of radiation exposure for materials in the LANSCE Spallation Irradiation Facility  

SciTech Connect (OSTI)

Materials samples were irradiated in the Los Alamos Radiation Effects Facility (LASREF) at the Los Alamos Neutron Science Center (LANSCE) to provide data for the Accelerator Production of Tritium (APT) project on the changes in mechanical and physical properties of materials in a spallation target environment. The targets were configured to expose samples to a variety of radiation environments including high-energy protons, mixed protons and neutrons, and predominantly neutrons. The irradiation was driven by an 800 MeV 1 mA proton beam with a circular Gaussian shape of approximately 2{sigma} = 3.5 cm. Two irradiation campaigns were conducted in which samples were exposed for approximately six months and two months, respectively. At the end of this period, the samples were extracted and tested. Activation foils that had been placed in proximity to the materials samples were used to quantify the fluences in various locations. The STAYSL2 code was used to estimate the fluences by combining the activation foil data with calculated data from the LAHET Code System (LCS) and MCNPX. The exposure for each sample was determined from the estimated fluences using interpolation based on a mathematical fitting to the fluence results. The final results included displacement damage (dpa) and gas (H, He) production for each sample from the irradiation. Based on the activation foil analysis, samples from several locations in both irradiation campaigns were characterized. The radiation damage to each sample was highly dependent upon location and varied from 0.023 to 13 dpa and was accompanied by high levels of H and He production.

James, M. R. (Michael R.); Maloy, S. A. (Stuart A.); Sommer, W. F. (Walter F.), Jr.; Fowler, Malcolm M.; Dry, D. E. (Donald E.); Ferguson, P. D. (Phillip D.); Corzine, R. K. (R. Karen); Mueller, G. E. (Gary E.)

2001-01-01T23:59:59.000Z

116

How radiation exposure affects immunogenetical risk of stomach cancer among atomic-bomb survivors  

Science Journals Connector (OSTI)

...Targeted alpha-Particle Radiation Therapy Kwamena E. Baidoo...comparison of the structure of radiation oncology in the United States and Japan.Int J Radiat Oncol Biol...FAQs/Fast-Facts-About-Radiation-Therapy/Index.aspx...

Tomonori Hayashi; Kazue Imai; Yoichiro Kusunoki; Kei Nakachi; and Eiichi Tahara

2005-05-01T23:59:59.000Z

117

Radiation exposure for 'caregivers' during high-dose outpatient radioiodine therapy  

Science Journals Connector (OSTI)

......designed to evaluate radiation safety issues and predict...to comply with radiation safety instructions...list of radiation safety instructions...record cumulative radiation dose for each...using EasyEPD2 software (version 1......

Christopher J. Marriott; Colin E. Webber; Karen Y. Gulenchyn

2007-01-01T23:59:59.000Z

118

Assessment of the occupational radiation exposure doses to workers at INMOL Pakistan (2007–11)  

Science Journals Connector (OSTI)

......measures and safety of workers during...been sent to the Radiation Dosimetry Laboratory...fabricated computer software . The calibration...PNRA and IAEA radiation protection and safety guidelines...radiation and for the safety of radiation sources. (1994......

Khalid Masood; Junaid Zafar; Tasneem Zafar; Haroon Zafar

2013-06-01T23:59:59.000Z

119

Study of anticipated impact on DOE programs from proposed reductions to the external occupational radiation exposure limit  

SciTech Connect (OSTI)

A study of the impact of reducing the occupational radiation exposure limit from 5 rem/yr to 2.5, 1.0 and 0.5 rem/yr, respectively produced the following conclusions: reduction of the occupational exposure limit would result in significant increase in total accumulated exposure to the current radiation worker population and could require an increase in the work force; important programs would have to be abandoned at a planned exposure limit of 0.5 rem/yr; some engineering technology is not sufficiently developed to design or operate at the 0.5 rem/yr limit; even a factor of 2 reduction (2.5 rem/yr) would significantly increase costs and would result in an increase in total exposure to the work force; in addition to a significant one-time initial capital cost resulting from a 0.5 rem/yr limit, there would be a significant increase in annual costs; the major emphasis in controlling occupational exposure should be on further reduction of total man-rem; and current standards are used only as a limit. For example, 97% of the employees receive less than 0.5 rem/yr.

None

1981-02-01T23:59:59.000Z

120

Management of Pediatric Spinal Cord Astrocytomas: Outcomes With Adjuvant Radiation  

SciTech Connect (OSTI)

Purpose: Pediatric intramedullary spinal cord tumors are exceedingly rare; in the United States, 100 to 200 cases are recognized annually, of these, most are astrocytomas. The purpose of this study is to report the outcomes in pediatric patients with spinal cord astrocytomas treated at a tertiary care center. Methods and Materials: An institutional review board-approved retrospective single-institution study was performed for pediatric patients with spinal cord astrocytomas treated at our hospital from 1990 to 2010. The patients were evaluated on the extent of resection, progression-free survival (PFS), and development of radiation-related toxicities. Kaplan-Meier curves and multivariate regression model methods were used for analysis. Results: Twenty-nine patients were included in the study, 24 with grade 1 or 2 (low-grade) tumors and 5 with grade 3 or 4 (high-grade) tumors. The median follow-up time was 55 months (range, 1-215 months) for patients with low-grade tumors and 17 months (range, 10-52 months) for those with high-grade tumors. Thirteen patients in the cohort received chemotherapy. All patients underwent at least 1 surgical resection. Twelve patients received radiation therapy to a median radiation dose of 47.5 Gy (range, 28.6-54.0 Gy). Fifteen patients with low-grade tumors and 1 patient with a high-grade tumor exhibited stable disease at the last follow-up visit. Acute toxicities of radiation therapy were low grade, whereas long-term sequelae were infrequent and manageable when they arose. All patients with low-grade tumors were alive at the last follow-up visit, compared with 1 patient with a high-grade tumor. Conclusion: Primary pediatric spinal cord astrocytomas vary widely in presentation and clinical course. Histopathologic grade remains a major prognostic factor. Patients with low-grade tumors tend to have excellent disease control and long-term survival compared to those with high-grade tumors. This experience suggests that radiation therapy may enhance tumor control with an acceptably low risk of long-term sequelae in this sensitive patient population.

Guss, Zachary D.; Moningi, Shalini [Department of Radiation Oncology and Molecular Radiation Sciences, Johns Hopkins Hospital, Baltimore, Maryland (United States)] [Department of Radiation Oncology and Molecular Radiation Sciences, Johns Hopkins Hospital, Baltimore, Maryland (United States); Jallo, George I. [Department of Neurosurgery, Johns Hopkins Hospital, Baltimore, Maryland (United States)] [Department of Neurosurgery, Johns Hopkins Hospital, Baltimore, Maryland (United States); Cohen, Kenneth J. [Division of Pediatric Oncology, Johns Hopkins Hospital, Baltimore, Maryland (United States)] [Division of Pediatric Oncology, Johns Hopkins Hospital, Baltimore, Maryland (United States); Wharam, Moody D. [Department of Radiation Oncology and Molecular Radiation Sciences, Johns Hopkins Hospital, Baltimore, Maryland (United States)] [Department of Radiation Oncology and Molecular Radiation Sciences, Johns Hopkins Hospital, Baltimore, Maryland (United States); Terezakis, Stephanie A., E-mail: stereza1@jhmi.edu [Department of Radiation Oncology and Molecular Radiation Sciences, Johns Hopkins Hospital, Baltimore, Maryland (United States)

2013-04-01T23:59:59.000Z

Note: This page contains sample records for the topic "radiation exposure managing" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


121

Radiation dose distribution for workers in South Korean nuclear power plants  

Science Journals Connector (OSTI)

......KHNP has implemented a radiation safety management system...dose registry of NPPs radiation workers, in order to...existing plants. From the software point of view, training...annual average individual radiation exposure dose is expected......

Byoung-il Lee; So-i Kim; Dong-hee Suh; Young-woo Jin; Jeong-in Kim; Hoon Choi; Young-khi Lim

2010-07-01T23:59:59.000Z

122

Interactions between reducing CO2 emissions, CO2 removal and solar radiation management  

Science Journals Connector (OSTI)

...the geological storage capacity for CO2. For the SRM...reduction in incoming solar radiation that fully...3. Results (a) Solar radiation management...scale set by the heat capacity in the model. For s2030srm2015...reduction in incoming solar radiation in the first...

2012-01-01T23:59:59.000Z

123

Discovering Clinical Biomarkers of Ionizing Radiation Exposure with Serum Proteomic Analysis  

Science Journals Connector (OSTI)

...with a wide range of diagnoses and radiation treatment...and during ionizing radiation...from low dose-volume...of a wide range of diagnoses...volume, and dose of radiotherapy...exposed to ionizing radiation between the...with a wide range of diagnoses and radiation treatment...and during ionizing radiation...from low dose-volume...

Cynthia Ménard; Donald Johann; Mark Lowenthal; Thierry Muanza; Mary Sproull; Sally Ross; James Gulley; Emanuel Petricoin; C. Norman Coleman; Gordon Whiteley; Lance Liotta; and Kevin Camphausen

2006-02-01T23:59:59.000Z

124

Relationship between Radiation Exposure and Risk of Second Primary Cancers among Atomic Bomb Survivors  

Science Journals Connector (OSTI)

...Welford, Department of Radiation Oncology, Case Western Reserve...case.edu 1 Department of Radiation Oncology, Case Western Reserve...Ohio. 2 Department of Radiation Oncology, Osaka University, Osaka, Japan. 3 School of Applied Sciences...

Christopher I. Li; Nobuo Nishi; Jean A. McDougall; Erin O. Semmens; Hiromi Sugiyama; Midori Soda; Ritsu Sakata; Mikiko Hayashi; Fumiyoshi Kasagi; Akihiko Suyama; Kiyohiko Mabuchi; Scott Davis; Kazunori Kodama; and Kenneth J. Kopecky

2010-09-15T23:59:59.000Z

125

Occupational exposure from external radiation used in medical practices in Pakistan by film badge dosimetry  

Science Journals Connector (OSTI)

......R. J. Manual on Radiation Dosimetry (1970...An Introduction of Radiation Protection (1986...Agency (IAEA). Safety series calibration of radiation protection instruments...Orfi S. D. Software RaDLab Ver. 1......

A. Jabeen; M. Munir; A. Khalil; M. Masood; P. Akhter

2010-08-01T23:59:59.000Z

126

Comparison of codes assessing galactic cosmic radiation exposure of aircraft crew  

Science Journals Connector (OSTI)

......the galactic cosmic radiation. Results are provided...fully satisfactory for radiation protection purposes...Protection and Nuclear Safety, F-92262 Fontenay-aux-Roses...Computer Simulation Cosmic Radiation Europe Humans Occupational...instrumentation methods Software Solar Activity...

J. F. Bottollier-Depois; P. Beck; B. Bennett; L. Bennett; R. Bütikofer; I. Clairand; L. Desorgher; C. Dyer; E. Felsberger; E. Flückiger; A. Hands; P. Kindl; M. Latocha; B. Lewis; G. Leuthold; T. Maczka; V. Mares; M. J. McCall; K. O'Brien; S. Rollet; W. Rühm; F. Wissmann

2009-10-01T23:59:59.000Z

127

Escherichia coli Genes and Pathways Involved in Surviving Extreme Exposure to Ionizing Radiation  

Science Journals Connector (OSTI)

...doses of ionizing radiation does not depend on...the effects of high doses of ionizing radiation (IR). The repair...IR resistance. A range of modern screening...survive increasing doses of ionizing radiation in comparison to...

Rose T. Byrne; Stefanie H. Chen; Elizabeth A. Wood; Eric L. Cabot; Michael M. Cox

2014-07-21T23:59:59.000Z

128

Childhood exposures to Rn-222 and background gamma radiation in the uranium provinces of south Kazakhstan and northern Kyrgyzstan  

Science Journals Connector (OSTI)

The project was undertaken in southern Kazakhstan and Kyrgyzstan. It was speculated that the radiation doses in these areas would be sufficiently high and dispersed to facilitate a case–control study where the radiation doses to leukaemia subjects/their siblings could be compared with those received by control children. As a precursor a pilot project was undertaken to confirm radiation exposures in the region. This was undertaken in association with regional childhood cancer treatment centres. Children from families affected by childhood leukaemia were monitored for 1 month for external ?-radiation dose and for exposure to radon gas. 28 children from families in Kazakhstan and from 31 families in Kyrgyzstan were monitored. The median measured radon in air concentration recorded in Kazakhstan was 123 Bq m?3 and in Kyrgyzstan was 177 Bq m?3. These represent 24-h average indoor/outdoor values. In the case of the ?-doses the mean annual dose was 1.2 mGy for Kazakhstan and 2.1 mGy for Kyrgyzstan. Overall, the results suggest that the populations studied receive similar annual radiation doses to those received by populations living in other areas with enhanced natural radioactivity and that further study of Kazakh and Kyrgyz populations would not facilitate a successful case–control study for childhood leukaemia.

N.D. Priest; D. Hoel; B. Uralbekov; D.O. Baizakova; M. Burkitbayev

2013-01-01T23:59:59.000Z

129

RADIATION SAFETY OFFICE Campus Radiation Safety Manual UNIVERSITY OF NEW ORLEANS Previous Revision: May 1999  

E-Print Network [OSTI]

measures: a. Personnel will be made aware of management's commitment to maintain low exposure levels. b. Management will periodically review operating procedures with the Radiation Safety Officer to determine steps taken to reduce exposures. c. Management will ensure that the person, or persons, selected

Li, X. Rong

130

Physical and biological properties of U.S. standard endotoxin EC after exposure to ionizing radiation.  

Science Journals Connector (OSTI)

...in the UV range, radiation treatment...pattern. Dose-related...effects of the ionizing radiation...milligram-per-milliliter range) (13...in the UV range, we found...ioniz- ing radiation. Regarding...effective, dose- dependent...EXPOSED TO IONIZING RADIATION...

G Csako; R J Elin; H D Hochstein; C M Tsai

1983-07-01T23:59:59.000Z

131

Management Perspective: Structure of Radiation Emergency Response in Japan  

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Due to previous local and international radiation incidents, emergency planning and preparedness measures have evolved in Japan. This chapter looks at the history of radiation emergency medicine in Japan and the ...

Takako Tominaga M.D.; Ph.D.; Misao Hachiya Ph.D.…

2014-01-01T23:59:59.000Z

132

Quality management system in the CIEMAT Radiation Dosimetry Service  

Science Journals Connector (OSTI)

......for technical services in radiation safety. (2008) IAEA. Safety Guide, No. GS-G-3...protection against ionizing radiation. (2001) 27284-27393...Publication 103. ICRP. 9 Certool Software. AENOR. http://www......

R. Martín; T. Navarro; A. M. Romero; M. A. López

2011-03-01T23:59:59.000Z

133

Polymorphisms in DNA Repair Genes, Medical Exposure to Ionizing Radiation, and Breast Cancer Risk  

Science Journals Connector (OSTI)

...Session Abstracts Treatment Radiation Therapy CTRC-AACR San...breast-conserving therapy in Japan: comparison of the treatment...Mitsumori 1 1 Department of Radiation Oncology and Image-Applied...Kyoto University, Kyoto, Japan 2 Department of Radiology...

Robert C. Millikan; Jon S. Player; Allan Rene deCotret; Chiu-Kit Tse; and Temitope Keku

2005-10-01T23:59:59.000Z

134

Estimation of the contribution of photon radiation for measurement of the exposure dose rate of neutron sources based on 252Cf  

Science Journals Connector (OSTI)

A method for the estimation of the contribution of photon radiation to the detector readings for measurement of the exposure dose rate and the equivalent activity of neutron ... screens and filters is considered....

N. F. Demchenko; R. N. Minvaliev; V. I. Shipilov…

2012-06-01T23:59:59.000Z

135

Radiation exposure to the population of Europe following the Chernobyl accident  

Science Journals Connector (OSTI)

......based on the analysis and compilation...availability and reliability of the radiation...destroyed nuclear reactor, including...availability and reliability of radiation...based on the analysis and compilation...based on the analysis and compilation...availability and reliability of the radiation......

V. Drozdovitch; A. Bouville; N. Chobanova; V. Filistovic; T. Ilus; M. Kovacic; I. Malátová; M. Moser; T. Nedveckaite; H. Völkle; E. Cardis

2007-03-01T23:59:59.000Z

136

Collective Doses and Radiation Risks Due to Medical Diagnostic Exposures in Ukraine  

Science Journals Connector (OSTI)

......Due to Medical Diagnostic Exposures in Ukraine L. Kalmykov N. Pilipenko V. Korneeva...Ukrainian population and separate regions of Ukraine due to radiodiagnosis have been calculated...exposure due to X ray examinations in Ukraine have decreased about twice during the......

L. Kalmykov; N. Pilipenko; V. Korneeva

1997-02-01T23:59:59.000Z

137

Interactions between reducing CO2 emissions, CO2 removal and solar radiation management  

Science Journals Connector (OSTI)

...World Energy Council. 41 World Energy Council.2009 Survey of energy resources interim update 2009. London, UK: World Energy Council. 42 Haszeldine, R. S...CO2 emissions, CO2 removal and solar radiation management. | We use...

2012-01-01T23:59:59.000Z

138

The similar effects of low-dose ionizing radiation and non-ionizing radiation from background environmental levels of exposure  

Science Journals Connector (OSTI)

The meltdown and release of radioactivity (ionizing radiation) from four damaged nuclear reactors at the Fukushima Nuclear Facility in Japan in March 2011 continues to contaminate air and ocean water even 1 year ...

Cindy Sage

2012-06-01T23:59:59.000Z

139

Yearly Chnages of Radiation Exposure Doses Received by Workers in Radiological Occupations at Kyushu University Hospital  

Science Journals Connector (OSTI)

......by Workers in Radiological Occupations at Kyushu University Hospital Hideo Irie * Chikara Takei * Shigeki Momii * Takehiko Higuchi...by workers in radiological occupations at Kyushu University Hospital from September 1962 to March 1966 were reported. The exposure......

Hideo Irie; Chikara Takei; Shigeki Momii; Takehiko Higuchi; Sigeaki Okamura; Kouji Masuda

1967-09-01T23:59:59.000Z

140

E-Print Network 3.0 - acute radiation exposure Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

chloride 100-44-7) and benzoyl chloride 98-88-4 (combined exposures) IARC-2A Acrolein Acutely... toxins, biotoxins and acutely toxic substances is not exhaustive Chemical...

Note: This page contains sample records for the topic "radiation exposure managing" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


141

Discovering Clinical Biomarkers of Ionizing Radiation Exposure with Serum Proteomic Analysis  

Science Journals Connector (OSTI)

...Libby Morimoto Public Health Sciences, Fred Hutchinson...the mutagenic effect of depleted uranium exposure in Gulf War...research, and public health impact. Nicholas Lang...the impact on public health, asking What are we...

Cynthia Ménard; Donald Johann; Mark Lowenthal; Thierry Muanza; Mary Sproull; Sally Ross; James Gulley; Emanuel Petricoin; C. Norman Coleman; Gordon Whiteley; Lance Liotta; and Kevin Camphausen

2006-02-01T23:59:59.000Z

142

Data Management at SSRL | Stanford Synchrotron Radiation Lightsource  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Management at SSRL Management at SSRL SSRL Users are responsible for meeting the Data Management obligations of their home institutions and granting agencies. In general, SSRL provides data acquisition systems (computers/software) and short term data storage on all of its beam lines. The beam line computers are connected to central servers via a high speed network, and data are transferred to these servers for backup and short-term storage. SSRL does not provide long term storage or archiving of data; users must generally transfer their data to their home institutions over the network or to their own portable storage devices. Individual beam lines may have specific resources and data management practices to help users meet their data management needs and obligations. Users should consult beam line staff when formulating data management plans

143

Quality management system in the CIEMAT Radiation Dosimetry Service  

Science Journals Connector (OSTI)

......spectrometry (NaI (Tl), low energy germanium and Fastscan detection...management system, an external auditor made a revision of the initial...CSN. 4 International Atomic Energy Agency. The management system...GS-R-3. 5 Internatinal Atomic Energy Agency. Application of the......

R. Martín; T. Navarro; A. M. Romero; M. A. López

2011-03-01T23:59:59.000Z

144

Safety Around Sources of Radiation  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Keeping Exposure Low Keeping Exposure Low Working Safely Around Radioactive Contamination Types of Radiation Exposure Managing Radiation Emergencies Procedure Demonstration Is it safe to be around sources? Too much radiation exposure is harmful. The degree of radiation injury depends on the amount of radiation received and the time involved. In general, the higher the amount, the greater the severity of early effects (occurring within a few weeks) and the greater the possibility of late effects such as cancer. The BEIR V (Biological Effects of Ionizing Radiation) Committee of the National Research Council estimates that among 100,000 people exposed to a one-time dose of 10 rem (10,000 mrem) and followed over their life span, about 790 more would die of cancer than the estimated 20,000 cancer deaths that would be expected among a non-exposed group of the same size. NOTE: 10 rem = 100 millisieverts (100 mSv).

145

Radiation exposure in X-ray-based imaging techniques used in osteoporosis  

E-Print Network [OSTI]

radiation dose compared with the X- ray examinations commonly used in routine clinical practice for the estimationradiation dose data and appropriate risk coef?cients provided by scienti?c committees. Risk estimation

Damilakis, John; Adams, Judith E.; Guglielmi, Giuseppe; Link, Thomas M.

2010-01-01T23:59:59.000Z

146

Analysis of radiation exposure, Task Force RAZOR. Exercise Desert Rock VI, Operation Teapot. Technical report  

SciTech Connect (OSTI)

The radiation dose to Task Force RAZOR personnel participating in Shot Apple II of Operation Teapot, Exercise Desert Rock VI, is reconstructed. Task force personnel were exposed to initial radiation while in their vehicles or in trenches at the time of Apple II detonation. They were also exposed to residual radiation during their subsequent manuever and during an inspection of the equipment display area. The calculated total gamma doses to fully-participating Task Force RAZOR personnel range from about 0.8 rem to 1.8 rem. The highest dose was received by personnel of the armored infantry platoon on right flank nearest ground zero. Internal radiation dose commitments to maximally exposed personnel inside vehicles are estimated to be about 0.4 rem to the thyroid, 0.003 rem to the whole body, and 0.002 rem to the bone.

Edwards, R.; Goetz, J.; Klemm, J.

1983-07-15T23:59:59.000Z

147

A Personal Experience Reducing Radiation Exposures: Protecting Family in Kiev during the First Two Weeks after Chernobyl  

SciTech Connect (OSTI)

The Chernobyl nuclear reactor accident occurred in 1986. The plume from the explosions and fires was highly radioactive and resulted in very high exposure levels in the surrounding regions. This paper describes how the people in Kiev, Ukraine, a city 90 miles (120 km) south of Chernobyl, and in particular one individual in that city, Professor Vitaly Eremenko, became aware of the threat before the official announcement and the steps he took to mitigate potential impacts to his immediate family. The combination of being informed and using available resources led to greatly reduced consequences for his family and, in particular, his newborn granddaughter. He notes how quickly word of some aspects of the hazard spread in the city and how other aspects appear to not have been understood. Although these events are being recalled as the 20th anniversary of the terrible event approaches, the lessons are still pertinent today. Threats of possible terrorist use of radiation dispersal devices makes knowledge of effective individual actions for self-protection from radiation exposures a topic of current interest.

Eremenko, Vitaly A.; Droppo, James G.

2006-08-01T23:59:59.000Z

148

Effects of fetal microwave radiation exposure on offspring behavior in mice  

Science Journals Connector (OSTI)

......In the developing nervous system, the brain tissue is more conductive than that of...neuronal functions and synaptic plasticity in brain slice preparations of rats exposed either...et al. Nerve cell damage in mammalian brain after exposure to microwaves from GSM mobile......

Yanchun Zhang; Zhihui Li; Yan Gao; Chenggang Zhang

2014-10-01T23:59:59.000Z

149

DOE - Office of Legacy Management -- Radiation Applications Inc - NY 57  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Radiation Applications Inc - NY 57 Radiation Applications Inc - NY 57 FUSRAP Considered Sites Site: RADIATION APPLICATIONS, INC. ( NY.57 ) Eliminated from consideration under FUSRAP Designated Name: Not Designated Alternate Name: RAI NY.57-1 Location: 370 Lexington Avenue , New York , New York NY.57-3 Evaluation Year: 1991 NY.57-4 Site Operations: Developed foam separation techniques and proposed investigations to remove cesium and strontium from fission product waste solutions. No indication that a substantial quantity of radioactive material was involved. NY.57-3 NY.57-5 Site Disposition: Eliminated - Potential for contamination considered remote NY.57-4 Radioactive Materials Handled: None Indicated NY.57-1 Primary Radioactive Materials Handled: None Indicated Radiological Survey(s): None Indicated

150

Assessment of radiation exposure in the uranium mining and milling area of Mailuu Suu, Kyrgyzstan  

Science Journals Connector (OSTI)

The area of the town of Mailuu Suu, Kyrgyzstan, is polluted by radionuclides and heavy metals from tailing dumps and heaps resulting from the historic exploitation of uranium mines. In the frame of a European Commission-TACIS funded project, radiological assessment was performed for critical group members living in the city of Mailuu Suu, located downstream the tailings, or in the village of Kara Agach, partially located on a uranium mine waste dump. The actual external exposure is around 1.2 mSv a?1 at both locations and exposure from radon is around 3 mSv a?1 at Mailuu Suu and around 10 mSv a?1 at Kara Agach. Ingestion dose was negligible for a critical group member living at Mailuu Suu. At Kara Agach, however, under the hypothesis that all food and fodder is cultivated locally, exposure from ingestion is much higher (?10–30 mSv a?1). In case of an accidental scenario [(part of) Tailing 3 content thrust to river], estimated additional maximum doses result in 45 and 77 mSv for an adult and a child, respectively.

H. Vandenhove; L. Sweeck; D. Mallants; H. Vanmarcke; A. Aitkulov; O. Sadyrov; M. Savosin; B. Tolongutov; M. Mirzachev; J.J. Clerc; H. Quarch; A. Aitaliev

2006-01-01T23:59:59.000Z

151

Occupational exposure to ionising radiation with thermoluminescence dosimetry system in Turkey, in 2003  

Science Journals Connector (OSTI)

......communication between reader and software via an RS-232C port...main functions of this software are data and glow-curve...included in the new software. Monitored and exposed...monitoring period. Radiation workers who may be exposed...60(3) and in the Safety Series No. 115(7......

C. T. Zeyrek; H. Gündüz

2005-05-01T23:59:59.000Z

152

Escherichia coli Genes and Pathways Involved in Surviving Extreme Exposure to Ionizing Radiation  

Science Journals Connector (OSTI)

...doses of ionizing radiation does not depend on a single mechanism...metabolism (2). This listing does not include a few gene products...from Deinococcus radiodurans R1 does not restore radioresistance...genetics: a laboratory manual and handbook for Escherichia coli and related...

Rose T. Byrne; Stefanie H. Chen; Elizabeth A. Wood; Eric L. Cabot; Michael M. Cox

2014-07-21T23:59:59.000Z

153

Improved Radiation Dosimetry/Risk Estimates to Facilitate Environmental Management of Plutonium-Contaminated Sites  

SciTech Connect (OSTI)

This report summarizes 4 years of research achievements in this Office of Science (BER), U.S. Department of Energy (DOE) project. The research described was conducted by scientists and supporting staff at Lovelace Respiratory Research Institute (LRRI)/Lovelace Biomedical and Environmental Research Institute (LBERI) and the Southern Urals Biophysics Institute (SUBI). All project objectives and goals were achieved. A major focus was on obtaining improved cancer risk estimates for exposure via inhalation to plutonium (Pu) isotopes in the workplace (DOE radiation workers) and environment (public exposures to Pu-contaminated soil). A major finding was that low doses and dose rates of gamma rays can significantly suppress cancer induction by alpha radiation from inhaled Pu isotopes. The suppression relates to stimulation of the body's natural defenses, including immunity against cancer cells and selective apoptosis which removes precancerous and other aberrant cells.

Scott, Bobby R.; Tokarskaya, Zoya B.; Zhuntova, Galina V.; Osovets, Sergey V.; Syrchikov, Victor A., Belyaeva, Zinaida D.

2007-12-14T23:59:59.000Z

154

Oral tissue changes of radiation-oncology and their management  

SciTech Connect (OSTI)

The cytologic effects of radiation therapy involve all tissues and most significantly bone within the treated area. Of greatest concern is the permanence of the compromised healing and resistance to infection of the irradiated tissues. Those dental procedures that do not cause tissue trauma are considered nonrisk. Any procedure that traumatizes previously irradiated tissues can exceed the healing potential of the compromised tissue and frequently results in an uncontrollable necrosis. The adequate utilization of hyperbaric oxygen therapy has been shown to be 95% effective in preventing osteoradionecrosis in postirradiated tissues. 9 references.

Fleming, T.J. (Univ. of Texas M.D. Anderson Cancer Center, Houston (USA))

1990-04-01T23:59:59.000Z

155

US Environmental Protection Agency Radiation Protection Programs for Waste Management and Site Cleanup  

SciTech Connect (OSTI)

This paper provides an overview of the regulatory authorities of the Environmental Protection Agency's (EPA's) Office of Radiation and Indoor Air (ORIA) as they pertain to radioactive waste management and disposal, and cleanup of radioactively contaminated sites. It also describes several ORIA initiatives and examples of two of EPA's radioactive waste standards. (authors)

Clark, R.L. [Office of Radiation and Indoor Air (6608J), U.S. Environmental Protection Agency, Washington, D.C (United States)

2008-07-01T23:59:59.000Z

156

Solar radiation management impacts on agriculture in China: A case study in the Geoengineering  

E-Print Network [OSTI]

Solar radiation management impacts on agriculture in China: A case study in the Geoengineering, Environment Canada, Toronto, Ontario, Canada, 3 School of Earth and Ocean Sciences, University of Victoria, Victoria, British Columbia, Canada, 4 State Key Laboratory of Earth Surface Processes and Resource Ecology

Robock, Alan

157

Analysis of radiation exposure for naval units of Operation Crossroads. Volume 2. (Appendix A) target ships. Technical report  

SciTech Connect (OSTI)

External radiation doses are reconstructed for crews of support and target ships of Joint Task Force One at Operation CROSSROADS, 1946. Volume I describes the reconstruction methodology, which consists of modeling the radiation environment, to include the radioactivity of lagoon water, target ships, and support ship contamination; retracing ship paths through this environment; and calculating the doses to shipboard personnel. The USS RECLAIMER, a support ship, is selected as a representative ship to demonstrate this methodology. Doses for all other ships are summarized. Volume II (Appendix A) details the results for target ship personnel. Volume III (Appendix B) details the results for support ship personnel. Calculated doses for more than 36,000 personnel aboard support ships while at Bikini range from zero to 1.7 rem. Of those, approximately 34,000 are less than 0.5 rem. From the models provided, doses due to target ship reboarding and doses accrued after departure from Bikini can be calculated, based on the individual circumstances of exposure.

Weitz, R.; Thomas, C.; Klemm, J.; Stuart, J.; Knowles, M.

1982-03-03T23:59:59.000Z

158

Analysis of radiation exposure for naval units of Operation Crossroads. Volume 3. (Appendix B) support ships. Technical report  

SciTech Connect (OSTI)

External radiation doses are reconstructed for crews of support and target ships of Joint Task Force One at Operation CROSSROADS, 1946. Volume I describes the reconstruction methodology, which consists of modeling the radiation environment, to include the radioactivity of lagoon water, target ships, and support ship contamination; retracing ship paths through this environment; and calculating the doses to shipboard personnel. The USS RECLAIMER, a support ship, is selected as a representative ship to demonstrate this methodology. Doses for all other ships are summarized. Volume II (Appendix A) details the results for target ship personnel. Volume III (Appendix B) details the results for support ship personnel. Calculated doses for more than 36,000 personnel aboard support ships while at Bikini range from zero to 1.7 rem. Of those approximately 34,000 are less than 0.5 rem. From the models provided, doses due to target ship reboarding and doses accrued after departure from Bikini can be calculated, based on the individual circumstances of exposure.

Weitz, R.; Thomas, C.; Klemm, J.; Stuart, J.; Knowles, M.

1982-03-03T23:59:59.000Z

159

Surgeons' Knowledge and Practices Regarding the Role of Radiation Therapy in Breast Cancer Management  

SciTech Connect (OSTI)

Purpose: Population-based studies suggest underuse of radiation therapy, especially after mastectomy. Because radiation oncology is a referral-based specialty, knowledge and attitudes of upstream providers, specifically surgeons, may influence patients' decisions regarding radiation, including whether it is even considered. Therefore, we sought to evaluate surgeons' knowledge of pertinent risk information, their patterns of referral, and the correlates of surgeon knowledge and referral in specific breast cancer scenarios. Methods and Materials: We surveyed a national sample of 750 surgeons, with a 67% response rate. We analyzed responses from those who had seen at least 1 breast cancer patient in the past year (n=403), using logistic regression models to identify correlates of knowledge and appropriate referral. Results: Overall, 87% of respondents were general surgeons, and 64% saw >10 breast cancer patients in the previous year. In a scenario involving a 45-year-old undergoing lumpectomy, only 45% correctly estimated the risk of locoregional recurrence without radiation therapy, but 97% would refer to radiation oncology. In a patient with 2 of 20 nodes involved after mastectomy, 30% would neither refer to radiation oncology nor provide accurate information to make radiation decisions. In a patient with 4 of 20 nodes involved after mastectomy, 9% would not refer to radiation oncology. Fewer than half knew that the Oxford meta-analysis revealed a survival benefit from radiation therapy after lumpectomy (45%) or mastectomy (32%). Only 16% passed a 7-item knowledge test; female and more-experienced surgeons were more likely to pass. Factors significantly associated with appropriate referral to radiation oncology included breast cancer volume, tumor board participation, and knowledge. Conclusions: Many surgeons have inadequate knowledge regarding the role of radiation in breast cancer management, especially after mastectomy. Targeted educational interventions may improve the quality of care.

Zhou, Jessica [Department of Radiation Oncology, University of Michigan, Ann Arbor, Michigan (United States); Griffith, Kent A. [Department of Biostatistics, University of Michigan, Ann Arbor, Michigan (United States); Hawley, Sarah T.; Zikmund-Fisher, Brian J. [Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan (United States); Janz, Nancy K. [Department of Health Behavior and Health Education, University of Michigan School of Public Health, Ann Arbor, Michigan (United States); Sabel, Michael S. [Department of Surgery, University of Michigan, Ann Arbor, Michigan (United States); Katz, Steven J. [Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan (United States); Jagsi, Reshma, E-mail: rjagsi@med.umich.edu [Department of Radiation Oncology, University of Michigan, Ann Arbor, Michigan (United States)

2013-12-01T23:59:59.000Z

160

Radiation exposure during liver surgery after treatment with 90Y microspheres, evaluated with computer simulations and dosimeter measurements  

Science Journals Connector (OSTI)

Purpose. Two patients with liver tumours were planned for a combined treatment, including surgery with preceding injections of ?? radiation emitting 90Y microspheres (SIRTEX®). The aim of this paper is to present a method of pre-surgical computer simulations of the absorbed dose rate on the surface of tumour tissue, combined with measurements of the actual absorbed dose rate on resected tissue, in order to estimate the absorbed dose to a surgeon's fingers during such surgery procedures. Methods and Materials. The dose rates from ?? radiation on the surface of tumour tissue were simulated with the software VARSKIN® Mod 2. The activity concentrations in tumours were estimated, based on SPECT/CT distribution studies of 99mTc-MAA and confirmed by SPECT/CT bremsstrahlung studies of 90Y microspheres. The activity distributions were considered as homogeneous within the tumour regions. The absorbed dose rates at different tumour tissue spots were calculated based on measurements with thermo-luminescent dosimeters (TLD) fastened on resected tissue. Results. The simulations showed a good agreement with the averaged absorbed dose rates based on TLD measurements performed on resected tissue, differing by 13% and 4% respectively. The absorbed dose rates at the measured maximum hotspots were twice as high as the average dose rates for both patients. Conclusion. The data is not sufficient in order to draw any general conclusions about dose rates on tumour tissue during similar surgeries, neither about the influence of dose rate heterogeneities nor about average dose rates. However, the agreement between simulations and measurements on these limited data indicate that this approach is a promising method for estimations of the radiation exposure to the surgeons' fingers during this kind of surgery procedure. More data from similar surgeries are necessary in order to validate the method.

Jonas Högberg; Magnus Rizell; Ragnar Hultborn; Johanna Svensson; Olof Henrikson; Peter Gjertsson; Peter Bernhardt

2012-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "radiation exposure managing" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


161

Management and Administration of Radiation Protection Programs Guide for use with Title 10, Code of Federal Regulations, Part 835, Occupational Radiation Protection  

Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

This Guide discusses acceptable methods for ensuring that radiological activities will be managed and administered in accordance with a documented radiation protection program that complies with U.S. DOE requirements specified in Title 10 CFR Part 835, Occupational Radiation Protection. Cancels DOE G 441.1-1. Canceled by DOE G 441.1-1B.

2003-10-20T23:59:59.000Z

162

Radiological protection from radioactive waste management in existing exposure situations resulting from a nuclear accident  

Science Journals Connector (OSTI)

......Radiological Protection Policy for the Disposal of Radioactive...Contaminated Areas after a Nuclear Accident or a Radiation...SITUATIONS RESULTING FROM A NUCLEAR ACCIDENT. | In environmental remediation after nuclear accidents, radioactive......

Daisuke Sugiyama; Takatoshi Hattori

2013-01-01T23:59:59.000Z

163

SHP-2 tyrosine phosphate-dependent focal adhesion kinase mediated cell migration of primary endothelial cells upon low LET radiation exposure  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

SHP-2 tyrosine phosphate-dependent focal adhesion kinase mediated cell SHP-2 tyrosine phosphate-dependent focal adhesion kinase mediated cell migration of primary endothelial cells upon low LET radiation exposure Xiangpeng Zheng, 1 Sumathy Mohan, 3 and Mohan Natarajan 1,2 Departments of 1 Otolaryngology, 2 Radiation Oncology, and 3 Pathology, University of Texas Health Science Center at San Antonio, San Antonio, TX 78229 The influence and mechanism of low LET radiation exposure on wound healing process is not yet fully understood. Based on the vital role of endothelial cells in migration and wound healing, this study investigated the response of endothelial cells to low-dose irradiation and the underlying mechanism. A wound was inflicted in the confluent monolayer of primary vascular endothelial cells exposing a cell-free zone on the plate. The cells were then exposed

164

Analysis of radiation exposure for naval personnel at Operation Ivy. Technical report  

SciTech Connect (OSTI)

The radiological environments are reconstructed for eighteen ships and the residence islands of Enewetak, Kwajalein, and Bikini Atolls that received fallout following Shots MIKE and KING during Operation IVY (November 1952). Secondary (late-time) fallout from Shot MIKE was the primary contributor to the low-level radiation encountered on the majority of the ships and atolls; only the M/V HORIZON received primary (early-time) fallout from this event. Fallout from Shot KING was minimal. From the reconstructed operations and radiological environments, equivalent personnel film badge doses are calculated and compared with available dosimetry data for fourteen of the ships. Calculated doses for the majority of the ships are in good agreement with the film badge data; however, for three of the participating destroyers (DDEs), calculated doses are significantly lower than the dosimetry data indicates. Calculated mean doses for typical shipboard personnel range from a high of 0.062 rem on the HORIZON to a low of 0.001 rem on the SPENCER F. BAIRD; for island-based personnel, calculated mean doses are less than 0.06 rem.

Thomas, C.; Goetz, J.; Stuart, J.; Klemm, J.

1983-03-15T23:59:59.000Z

165

Occupational radiation exposure at commercial nuclear power reactors and other facilities 1996: Twenty-ninth annual report. Volume 18  

SciTech Connect (OSTI)

This report summarizes the occupational exposure data that are maintained in the US Nuclear Regulatory Commission`s (NRC) Radiation Exposure Information and Reporting System (REIRS). The bulk of the information contained in the report was compiled from the 1996 annual reports submitted by six of the seven categories of NRC licensees subject to the reporting requirements of 10 CFR 20.2206. Since there are no geologic repositories for high level waste currently licensed, only six categories will be considered in this report. Annual reports for 1996 were received from a total of 300 NRC licensees, of which 109 were operators of nuclear power reactors in commercial operation. Compilations of the reports submitted by the 300 licensees indicated that 138,310 individuals were monitored, 75,139 of whom received a measurable dose. The collective dose incurred by these individuals was 21,755 person-cSv (person-rem){sup 2} which represents a 13% decrease from the 1995 value. The number of workers receiving a measurable dose also decreased, resulting in the average measurable dose of 0.29 cSv (rem) for 1996. The average measurable dose is defined to be the total collective dose (TEDE) divided by the number of workers receiving a measurable dose. These figures have been adjusted to account for transient reactor workers. Analyses of transient worker data indicate that 22,348 individuals completed work assignments at two or more licensees during the monitoring year. The dose distributions are adjusted each year to account for the duplicate reporting of transient workers by multiple licensees. In 1996, the average measurable dose calculated from reported was 0.24 cSv (rem). The corrected dose distribution resulted in an average measurable dose of 0.29 cSv (rem).

Thomas, M.L. [Nuclear Regulatory Commission, Washington, DC (United States). Div. of Regulatory Applications; Hagemeyer, D. [Science Applications International Corp., Oak Ridge, TN (United States)

1998-02-01T23:59:59.000Z

166

Analysis of radiation exposure for Naval personnel at Operation Castle. Technical report, 1 January 1983-31 January 1984  

SciTech Connect (OSTI)

Film-badge doses are reconstructed for sixteen ships and the residence islands of Enewetak and Kwajalein Atolls resulting from the six nuclear detonations comprising Operation CASTLE (March-May 1954). Fallout from Shots BRAVO and ROMEO was the major source of contamination on most of the ships and islands. Varying amounts of fallout from Shots UNION, YANKEE, and NECTAR contributed somewhat to the total doses of the shipboard and island-based personnel; no fallout was experienced as a result of Shot KOON. Shipboard personnel received additional exposure from hulls and salt water piping systems that had become contaminated from operating in the radioactive waters of Bikini Lagoon. From the reconstructed radiation environments, both topside and below, an equivalent film badge dose is calculated and compared to actual dosimetry data. Agreement is very good during badged periods when the ships received significant fallout. When topside intensities were not documented, generally late in the operation when intensity levels were low, agreement is not as good. Calculated ship contamination doses of significance are in excellent agreement with limited available dosimetry data. Calculated average doses for shipboard personnel range from a low of 0.19 rem for the crew of the USS LST-825 to a high of 3.56 rem for the crew of the USS PHILIP. Average doses on the residence islands of Enewetak and Kwajalein Atolls are 1.09 rem and 0.32 rem, respectively.

Thomas, C.; Goetz, J.; Klemm, J.; Weitz, R.

1984-02-28T23:59:59.000Z

167

Estimation of risk from medical radiation exposure based on effective and organ dose: how much difference is there?  

Science Journals Connector (OSTI)

......Russian Basic Sanitary Radiation Protection Standards...Basic Sanitary Rules for Radiation Safety of 2010(3). It is...CT)(4). Although radiation dose is the primary...effective dose; this software is addressed to radiologists......

V. K. Ivanov; V. V. Kashcheev; S. Yu. Chekin; A. N. Menyaylo; E. A. Pryakhin; A. F. Tsyb; F. A. Mettler

2013-07-01T23:59:59.000Z

168

Review of exposure limits and experimental data for corneal and lenticular damage from short pulsed UV and IR laser radiation  

E-Print Network [OSTI]

of exposure limits ANSI Z136.16 . The IEC and ANSI laser safety standards use the term "Maximum Permissible

169

Management and Administration of Radiation Protection Programs Guide for Use with Title 10, Code of Federal Regulations, Part 835, Occupational Radiation Protection  

Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

This Guide discusses acceptable methods for ensuring that radiological activities will be managed and administered in accordance with a documented radiation protection program (RPP) that complies with U.S. Department of Energy (DOE) requirements specified in Title 10 of the Code of Federal Regulations (CFR), Part 835, Occupational Radiation Protection (DOE 1998a), hereinafter referred to as 10 CFR 835. Canceled by DOE G 441.1-1A.

1999-03-17T23:59:59.000Z

170

RADIATION PROTECTION, RADIOACTIVE WASTE MANAGEMENT AND SITE MONITORING AT THE NUCLEAR SCIENTIFIC EXPERIMENTAL AND EDUCATIONAL CENTRE IRT-SOFIA AT INRNE-BAS  

Science Journals Connector (OSTI)

......conditions so that the radiation exposure of the staff...resources of the modern radiation monitoring system...in 2006. The staff safety is provided for by using...wirelessly using the software (DOSIMAS) and the...achieved by a stationary radiation monitoring system providing......

Al. Mladenov; D. Stankov; Tz. Nonova; K. Krezhov

2014-07-01T23:59:59.000Z

171

ORISE: REAC/TS Courses in Medical Management of Radiation Emergencies 2013-14  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

K. Livingston PhD K. Livingston PhD Radiobiology/Cytogenetics Technical Director, REAC/TS Cytogenetic Biodosimetry Laboratory (CBL) Gail Mack-Bramlette REAC/TS Course Registrar Becky Murdock REAC/TS Education Coordinator and Radiation Accident Registry Technician Steve Sugarman MS CHP CHCM REAC/TS Health Physics Project Manager REAC/TS Cytogenetic Biodosimetry Laboratory (CBL) Coordinator Richard Toohey PhD, CHP REAC/TS Senior Scientific Advisor M.H. Chew & Associates, Inc. Name: Last First Middle Initial Degree/Certification

172

Human In vivo Dose-Response to Controlled, Low-Dose Low Linear Energy Transfer Ionizing Radiation Exposure  

Science Journals Connector (OSTI)

...effects of low-dose low-linear energy transfer ionizing radiation (LDIR) in humans...direct evidence that doses in the range of 1 to 10 cGy...the intentional radiation of healthy tissue...the response to ionizing radiation. Attempts...

Zelanna Goldberg; David M. Rocke; Chad Schwietert; Susanne R. Berglund; Alison Santana; Angela Jones; Jörg Lehmann; Robin Stern; Ruixiao Lu; and Christine Hartmann Siantar

2006-06-15T23:59:59.000Z

173

Effects of an acute dose of gamma radiation exposure on stem diameter growth, carbon gain, and biomass partitioning in Helianthus annuus  

SciTech Connect (OSTI)

Nineteen-day-old dwarf sunflower plants (Helianthus annuus, variety NK894) received a variable dose (0-40 Gy) from a cobalt-60 gamma source. A very sensitive stem monitoring device, developed at Battelle's Pacific Northwest Laboratories, Richland, Washington was used to measure real-time changes in stem diameter. Exposure of plants caused a significant reduction in stem growth and root biomass. Doses as low as 5 Gy resulted in a significant increase in leaf density, suggesting that nonreversible morphological growth changes could be induced by very low doses of radiation. Carbohydrate analysis of 40-Gy irradiated plants demonstrated significantly more starch content in leaves and significantly less starch content in stems 18 days after exposure than did control plants. In contrast, the carbohydrate content in roots of 40-Gy irradiated plants were not significantly different from unirradiated plants 18 days after exposure. These results indicate that radiation either decreased phloem transport or reduced the availability of sugar reducing enzymes in irradiated plants. 44 refs., 12 figs.

Thiede, M.E.

1988-05-25T23:59:59.000Z

174

Translocation analysis by the FISH-painting method for retrospective dose reconstruction in individuals exposed to ionizing radiation 10 years after exposure  

Science Journals Connector (OSTI)

Fluorescence in situ hybridization (FISH) is a powerful method largely used for detecting chromosomal rearrangements, translocations in particular, which are important biomarkers for dose assessment in case of human exposure to ionizing radiation. To test the possibility of using the translocation analysis by FISH-painting method in retrospective dose assessment, we carried out in vitro experiments in irradiated human lymphocytes, in parallel with the analysis of translocations in lymphocytes from 10 individuals, who were exposed to 137cesium in the Goiânia (Brazil) accident (samples collected 10 years after exposure). The in vitro dose–response curve for the genomic translocation frequencies (FGs) fits a linear quadratic model, according to the equation: Y=0.0243X2+0.0556X. The FG values were also calculated for the individuals exposed to 137cesium, ranging from 0.58 to 5.91 per 100 cells, and the doses were estimated and compared with the results obtained by dicentric analysis soon after the accident, taking the opportunity to test the validity of translocation analysis in retrospective biodosimetry. A tentative of retrospective dosimetry was performed, indicating that the method is feasible only for low level exposure (below 0.5 Gy), while for higher doses there is a need to apply appropriate correction factors, which take into consideration mainly the persistence of chromosomal translocations along with time, and the influence of endogenous and exogenous factors determining the inter-individual variability in the cellular responses to radiation.

Marjori L. Camparoto; Adriana T. Ramalho; Adayapalam T. Natarajan; Maria P. Curado; Elza T. Sakamoto-Hojo

2003-01-01T23:59:59.000Z

175

Human In vivo Dose-Response to Controlled, Low-Dose Low Linear Energy Transfer Ionizing Radiation Exposure  

Science Journals Connector (OSTI)

...format from the National Center for Biotechnology Information...most peoples lives by industrial exposures and medical...California Davis Cancer Center, UCDHS. The authors...implications for risk assessment in both therapeutic...California Davis Cancer Center, Sacramento, 95817...

Zelanna Goldberg; David M. Rocke; Chad Schwietert; Susanne R. Berglund; Alison Santana; Angela Jones; Jörg Lehmann; Robin Stern; Ruixiao Lu; and Christine Hartmann Siantar

2006-06-15T23:59:59.000Z

176

Animal mortality resulting from uniform exposures to photon radiations: Calculated LD/sub 50/s and a compilation of experimental data  

SciTech Connect (OSTI)

Studies conducted during the 1950s and 1960s of radiation-induced mortality to diverse animal species under various exposure protocols were compiled into a mortality data base. Some 24 variables were extracted and recomputed from each of the published studies, which were collected from a variety of available sources, primarily journal articles. Two features of this compilation effort are (1) an attempt to give an estimate of the uniform dose received by the bone marrow in each treatment so that interspecies differences due to body size were minimized and (2) a recomputation of the LD/sub 50/ where sufficient experimental data are available. Exposure rates varied in magnitude from about 10/sup -2/ to 10/sup 3/ R/min. This report describes the data base, the sources of data, and the data-handling techniques; presents a bibliography of studies compiled; and tabulates data from each study. 103 refs., 44 tabs.

Jones, T.D.; Morris, M.D.; Wells, S.M.; Young, R.W.

1986-12-01T23:59:59.000Z

177

Analysis of radiation exposure, Third Marine Corps Provisional Atomic Exercise Brigade. Exercise Desert Rock VI, Operation Teapot. Technical report  

SciTech Connect (OSTI)

The radiation dose is reconstructed for 3d MCPAEB personnel participating in exercises involving helicopter-lifted assaults in conjunction with Shot Bee of Operation Teapot, Exercise Desert Rock VI. Brigade personnel were exposed to initial radiation while in trenches at the time of the Shot Bee detonation. They were also exposed to residual radiation from an earlier test shot (Shot Turk) during their subsequent maneuvers and to residual radiation from Shot Bee during an inspection of equipment displays. The calculated total gamma doses to the bulk of the participating troops range from about 0.57-0.85 rem.

Goetz, J.; Klemm, J.; Ortlieb, E.

1984-02-15T23:59:59.000Z

178

Rapid assessment of high-dose radiation exposures through scoring of cell-fusion-induced premature chromosome condensation and ring chromosomes  

Science Journals Connector (OSTI)

Abstract Analysis of premature chromosome condensation (PCC) mediated by fusion of G0-lymphocytes with mitotic CHO cells in combination with rapid visualization and quantification of rings (PCC-Rf) is proposed as an alternative technique for dose assessment of radiation-exposed individuals. Isolated lymphocytes or whole blood from six individuals were ?-irradiated with 5, 10, 15 and 20 Gy at a dose rate of 0.5 Gy/min. Following either 8- or 24-h post-exposure incubation of irradiated samples at 37 °C, chromosome spreads were prepared by standard PCC cytogenetic procedures. The protocol for PCC fusion proved to be effective at doses as high as 20 Gy, enabling the analysis of ring chromosomes and excess PCC fragments. The ring frequencies remained constant during the 8–24-h repair time; the pooled dose relationship between ring frequency (Y) and dose (D) was linear: Y = (0.088 ± 0.005) × D. During the repair time, excess fragments decreased from 0.91 to 0.59 chromatid pieces per Gy, revealing the importance of information about the exact time of exposure for dose assessment on the basis of fragments. Compared with other cytogenetic assays to estimate radiation dose, the PCC-Rf method has the following benefits: a 48-h culture time is not required, allowing a much faster assessment of dose in comparison with conventional scoring of dicentrics and rings in assays for chemically-induced premature chromosome condensation (PCC-Rch), and it allows the analysis of heavily irradiated lymphocytes that are delayed or never reach mitosis, thus avoiding the problem of saturation at high doses. In conclusion, the use of the PCC fusion assay in conjunction with scoring of rings in G0-lymphocytes offers a suitable alternative for fast dose estimation following accidental exposure to high radiation doses.

A.I. Lamadrid Boada; I. Romero Aguilera; G.I. Terzoudi; J.E. González Mesa; G. Pantelias; O. García

2013-01-01T23:59:59.000Z

179

Technology, safety, and costs of decommissioning reference nuclear research and test reactors: sensitivity of decommissioning radiation exposure and costs to selected parameters  

SciTech Connect (OSTI)

Additional analyses of decommissioning at the reference research and test (R and T) reactors and analyses of five recent reactor decommissionings are made that examine some parameters not covered in the initial study report (NUREG/CR-1756). The parameters examined for decommissioning are: (1) the effect on costs and radiation exposure of plant size and/or type; (2) the effects on costs of increasing disposal charges and of unavailability of waste disposal capacity at licensed waste disposal facilities; and (3) the costs of and the available alternatives for the disposal of nuclear R and T reactor fuel assemblies.

Konzek, G.J.

1983-07-01T23:59:59.000Z

180

RADIATION CARCINOGENESIS IN MAN: INFLUENCE OF DOSE-RESPONSE MODELS AND RISK PROJECTION MODELS IN THE ESTIMATION OF RISK COEFFICIENTS FOLLOWING EXPOSURE TO LOW-LEVEL RADIATION  

E-Print Network [OSTI]

RADIATION CARCINOGENESIS IN MAN: INFLUENCE OF DOSE-RESPONSE MODELS AND RISK PROJECTION MODELS IN THE ESTIMATIONRADIATION CARCINOGENESIS IN HAN: INFLUENCE OF DOSE-RESPONSE MODELS AND RISK PROJECTION MODELS IN THE ESTIMATION

Fabrikant, J.I.

2010-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "radiation exposure managing" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


181

Radiation Protection in Newer Medical Imaging Technologies: PET/CT  

Science Journals Connector (OSTI)

......58 timely. Safety Report Series...challenging topic of Radiation Exposure of...of various software packages is...and age. To Safety Report Series...CT dosimetry software site impactscan...its June 2006 software version fade...Management of Radiation Dose in CT...Section 5 of Safety Report Series......

Dawn Banghart

2009-07-01T23:59:59.000Z

182

Dynamics of the xanthophyll cycle and non-radiative dissipation of absorbed light energy during exposure of Norway spruce to high irradiance  

Science Journals Connector (OSTI)

Summary The response of Norway spruce saplings (Picea abies [L.] Karst.) was monitored continuously during short-term exposure (10 days) to high irradiance (HI; 1000 ?mol m?2 s?1). Compared with plants acclimated to low irradiance (100 ?mol m?2 s?1), plants after HI exposure were characterized by a significantly reduced CO2 assimilation rate throughout the light response curve. Pigment contents varied only slightly during HI exposure, but a rapid and strong response was observed in xanthophyll cycle activity, particularly within the first 3 days of the HI treatment. Both violaxanthin convertibility under HI and the amount of zeaxanthin pool sustained in darkness increased markedly under HI conditions. These changes were accompanied by an enhanced non-radiative dissipation of absorbed light energy (NRD) and the acceleration of induction of both NRD and de-epoxidation of the xanthophyll cycle pigments. We found a strong negative linear correlation between the amount of sustained de-epoxidized xanthophylls and the photosystem II (PSII) photochemical efficiency (FV/FM), indicating photoprotective down-regulation of the PSII function. Recovery of FV/FM at the end of the HI treatment revealed that Norway spruce was able to cope with a 10-fold elevated irradiance due particularly to an efficient NRD within the PSII antenna that was associated with enhanced violaxanthin convertibility and a light-induced accumulation of zeaxanthin that persisted in darkness.

Michal Štroch; Kristina Kuldová; Ji?í Kalina; Vladimír Špunda

2008-01-01T23:59:59.000Z

183

Implementation of dose management system at radiation protection board of Ghana Atomic Energy Commission  

Science Journals Connector (OSTI)

......12-20. 7 Occupational Radiation Protection. Radiation Protection and Safety Guide. (2002) GRPB-G3...International Commission on Radiation Units and Measurements...system (DMS) is a computer software developed by the International......

F. Hasford; J. K. Amoako; E. O. Darko; G. Emi-Reynolds; E. K. Sosu; F. Otoo; G. O. Asiedu

2012-01-01T23:59:59.000Z

184

Radiation dose management in CT, SPECT/CT and PET/CT techniques  

Science Journals Connector (OSTI)

......report from the Swedish Radiation Safety Authority showed that...of the collective radiation dose in Sweden in 2005...more and more wasted radiation dose is delivered to...overscanning(37). Both a software solution(38) and......

Sören Mattsson; Marcus Söderberg

2011-09-01T23:59:59.000Z

185

Analysis of radiation exposure for troop observers, Exercise Desert Rock VI, Operation Teapot. Final report 1 Mar-15 Jul 80  

SciTech Connect (OSTI)

The radiation doses to troop observers and volunteer observers for Exercise Desert Rock VI are reconstructed for each applicable shot of Operation Teapot (1955). Initial neutron and gamma radiation doses are determined from transport codes ATR4 and ATR4.1. Residual radiation contours and decay rates are established through a new automated procedure that utilizes raw data in regression analysis to fit space-time models. Troop operations data are combined with the radiological data to determine integrated dose. Uncertainties are calculated for each parameter. The volunteers received the highest observer--1.6 rem gamma and 4.5 rem neutron. The highest dose received by troop observers was 1.4 rem gamma and 1.4 rem neutron at Shot Tesla.

Goetz, J.; McGahan, J.; Kaul, D.; Weitz, R.; Klemm, J.

1980-07-15T23:59:59.000Z

186

Risks from ionizing radiation  

Science Journals Connector (OSTI)

... RADON indoors now accounts for nearly half of the average UK population exposure to ionizing radiation ... exposure to ionizing radiation. We believe that the extent of the variation in exposure to radon in the United Kingdom and else-where and its magnitude in relation to exposures from ...

R. H. Clarke; T. R. E. Southwood

1989-03-16T23:59:59.000Z

187

Accelerated alpha-decay of 232U isotope achieved by exposure of its aqueous solution with gold nanoparticles to laser radiation  

E-Print Network [OSTI]

Experimental results are presented on laser-induced accelerated alpha-decay of Uranium-232 nuclei under laser exposure of Au nanoparticles in aqueous solutions of its salt. It is demonstrated that the decrease of alpha-activity strongly depends on the peak intensity of the laser radiation in the liquid and is highest at several terawatt per square centimeter. The decrease of alpha-activity of the exposed solutions is accompanied by the deviation of gamma-activities of daughter nuclides of Uranium-232 from their equilibrium values. Possible mechanisms of the laser influence on the alpha-activity are discussed on the basis of the amplification of the electric field of laser wave on metallic nanoparticles.

A. V. Simakin; G. A. Shafeev

2011-12-29T23:59:59.000Z

188

Predicting the radiation exposure of terrestrial wildlife in the Chernobyl exclusion zone : an international comparison of approaches.  

SciTech Connect (OSTI)

There is now general acknowledgement that there is a requirement to demonstrate that species other than humans are protected from anthropogenic releases of radioactivity. A number of approaches have been developed for estimating the exposure of wildlife and some of these are being used to conduct regulatory assessments. There is a requirement to compare the outputs of such approaches against available data sets to ensure that they are robust and fit for purpose. In this paper we describe the application of seven approaches for predicting the whole-body ({sup 90}Sr, {sup 137}Cs, {sup 241}Am and Pu isotope) activity concentrations and absorbed dose rates for a range of terrestrial species within the Chernobyl exclusion zone. Predictions are compared against available measurement data, including estimates of external dose rate recorded by thermoluminescent dosimeters attached to rodent species. Potential reasons for differences between predictions between the various approaches and the available data are explored.

Beresford, N. A.; Barnett, C. L.; Brown, J. E.; Cheng, J.-J.; Copplestone, D.; Gaschak, S.; Hosseini, A.; Howard, B. J.; Kamboj, S.; Nedveckaite, T.; Olyslaegers, G.; Smith, J. T.; Vives i Batlle, J.; Vives-Lynch, S.; Yu, C.; Environmental Science Division; Centre for Ecology and Hydrology; Norwegian Radiation Protection Authority; England and Wales Environment Agency; International Radioecology Lab.; Inst. of Physics, Radiation Protection,; Belgian Nuclear Research Centre; Univ. of Portsmouth; Westlakes Research Inst.

2010-06-09T23:59:59.000Z

189

Development and Validation of a Heart Atlas to Study Cardiac Exposure to Radiation Following Treatment for Breast Cancer  

SciTech Connect (OSTI)

Purpose: Cardiac toxicity is an important sequela of breast radiotherapy. However, the relationship between dose to cardiac structures and subsequent toxicity has not been well defined, partially due to variations in substructure delineation, which can lead to inconsistent dose reporting and the failure to detect potential correlations. Here we have developed a heart atlas and evaluated its effect on contour accuracy and concordance. Methods and Materials: A detailed cardiac computed tomography scan atlas was developed jointly by cardiology, cardiac radiology, and radiation oncology. Seven radiation oncologists were recruited to delineate the whole heart, left main and left anterior descending interventricular branches, and right coronary arteries on four cases before and after studying the atlas. Contour accuracy was assessed by percent overlap with gold standard atlas volumes. The concordance index was also calculated. Standard radiation fields were applied. Doses to observer-contoured cardiac structures were calculated and compared with gold standard contour doses. Pre- and post-atlas values were analyzed using a paired t test. Results: The cardiac atlas significantly improved contour accuracy and concordance. Percent overlap and concordance index of observer-contoured cardiac and gold standard volumes were 2.3-fold improved for all structures (p < 0.002). After application of the atlas, reported mean doses to the whole heart, left main artery, left anterior descending interventricular branch, and right coronary artery were within 0.1, 0.9, 2.6, and 0.6 Gy, respectively, of gold standard doses. Conclusions: This validated University of Michigan cardiac atlas may serve as a useful tool in future studies assessing cardiac toxicity and in clinical trials which include dose volume constraints to the heart.

Feng, Mary, E-mail: maryfeng@umich.ed [Department of Radiation Oncology, University of Michigan Medical Center, Ann Arbor, Michigan (United States); Moran, Jean M. [Department of Radiation Oncology, University of Michigan Medical Center, Ann Arbor, Michigan (United States); Koelling, Todd [Department of Internal Medicine, Division of Cardiology, University of Michigan Medical Center, Ann Arbor, Michigan (United States); Chughtai, Aamer [Department of Radiology, University of Michigan Medical Center, Ann Arbor, Michigan (United States); Chan, June L.; Freedman, Laura; Hayman, James A.; Jagsi, Reshma; Jolly, Shruti; Larouere, Janice; Soriano, Julie; Marsh, Robin; Pierce, Lori J. [Department of Radiation Oncology, University of Michigan Medical Center, Ann Arbor, Michigan (United States)

2011-01-01T23:59:59.000Z

190

National radiation exposures and risks caused by implementing EPA`s proposed revised national primary drinking water regulations  

SciTech Connect (OSTI)

This report estimates risks to workers and the public associated with treatment processes and their associated waste products that would be mandated under proposed regulations of radium, radon, and uranium in drinking water. Three scenarios were examined: (1) all wastes flushed to the sanitary sewer; (2) all wastes disposed on land; (3) similar to (2) but radon removal by granulated activated carbon rather than packed tower aeration. Risks considered included accidental injury and cancer. Worker risks for both scenarios I and II were estimated to be 0.025 and 0.01 deaths per year of operation for radium-226 and radium-228, respectively. Worker risks for uranium were estimated to be 0.13 deaths/year of operation for scenario I and 0.5 deaths/year of operation for scenario II. Worker risks for radon removal were estimated to be 1.7 deaths/year of operation for scenario I and 2.2 deaths/year of operation for scenario II. Risks to the public for scenarios I and II for radium-226 were 4 {times} 10{sup {minus}4} and for radium-228 were 9 {times} 10{sup {minus}5} deaths/year of operation. Risks to the public for scenarios I and II for uranium were 7.3 {times} 10{sup {minus}2} and 2 {times} 10{sup {minus}4}, respectively. Risks to the public for scenario I and II for radon were 24 deaths/year of operation and for scenario III were nil. Public risks were quantified only for people exposed during a year of operation. For example, effects of public exposures in future years via groundwater contamination associated with landfill of treatment waste were not considered.

Morris, S.C.; Rowe, M.D.; Holtzman, S.; Meinhold, A.F.

1993-05-01T23:59:59.000Z

191

Central dose data management and analysis in IT-driven radiation protection strategies  

Science Journals Connector (OSTI)

......central dose data management system for use...requirements for such an approach are presented...central data management facility are...an M.Sc. in Science and Technology...noted. With this approach optimisation...thesis in X-ray Science and Technology...quality assurance management system in mammography......

M. Ward; D. Hughes; P. Connolly; B. M. Moores

2005-05-01T23:59:59.000Z

192

The multiple market-exposure of waste management companies: A case study of two Swedish municipally owned companies  

SciTech Connect (OSTI)

Highlights: Black-Right-Pointing-Pointer Swedish municipally owned waste management companies are active on political, material, technical, and commercial markets. Black-Right-Pointing-Pointer These markets differ in kind and their demands follow different logics. Black-Right-Pointing-Pointer These markets affect the public service, processing, and marketing of Swedish waste management. Black-Right-Pointing-Pointer Articulating these markets is a strategic challenge for Swedish municipally owned waste management. - Abstract: This paper describes how the business model of two leading Swedish municipally owned solid waste management companies exposes them to four different but related markets: a political market in which their legitimacy as an organization is determined; a waste-as-material market that determines their access to waste as a process input; a technical market in which these companies choose what waste processing technique to use; and a commercial market in which they market their products. Each of these markets has a logic of its own. Managing these logics and articulating the interrelationships between these markets is a key strategic challenge for these companies.

Corvellec, Herve, E-mail: herve.corvellec@ism.lu.se [Department of Service Management, Lund University, Campus Helsingborg, PO Box 882, SE-251 08 Helsingborg (Sweden); Bramryd, Torleif [Department of Environmental Strategy, Lund University, Campus Helsingborg, PO Box 882, SE-251 08 Helsingborg (Sweden)

2012-09-15T23:59:59.000Z

193

Polymorphisms in Apoptosis- and Proliferation-Related Genes, Ionizing Radiation Exposure, and Risk of Breast Cancer among U.S. Radiologic Technologists  

Science Journals Connector (OSTI)

...radiation and breast cancer dose-response relationship...controls and quantified radiation breast doses in the low-to-moderate range. (Cancer Epidemiol Biomarkers...Breast Cancer|SNPs|Ionizing radiation|Interaction|Radiobiological...

Alice J. Sigurdson; Parveen Bhatti; Michele M. Doody; Michael Hauptmann; Laura Bowen; Steven L. Simon; Robert M. Weinstock; Martha S. Linet; Marvin Rosenstein; Marilyn Stovall; Bruce H. Alexander; Dale L. Preston; Jeffrey P. Struewing; and Preetha Rajaraman

2007-10-01T23:59:59.000Z

194

Automotive Underhood Thermal Management Analysis Using 3-D Coupled Thermal-Hydrodynamic Computer Models: Thermal Radiation Modeling  

SciTech Connect (OSTI)

The goal of the radiation modeling effort was to develop and implement a radiation algorithm that is fast and accurate for the underhood environment. As part of this CRADA, a net-radiation model was chosen to simulate radiative heat transfer in an underhood of a car. The assumptions (diffuse-gray and uniform radiative properties in each element) reduce the problem tremendously and all the view factors for radiation thermal calculations can be calculated once and for all at the beginning of the simulation. The cost for online integration of heat exchanges due to radiation is found to be less than 15% of the baseline CHAD code and thus very manageable. The off-line view factor calculation is constructed to be very modular and has been completely integrated to read CHAD grid files and the output from this code can be read into the latest version of CHAD. Further integration has to be performed to accomplish the same with STAR-CD. The main outcome of this effort is to obtain a highly scalable and portable simulation capability to model view factors for underhood environment (for e.g. a view factor calculation which took 14 hours on a single processor only took 14 minutes on 64 processors). The code has also been validated using a simple test case where analytical solutions are available. This simulation capability gives underhood designers in the automotive companies the ability to account for thermal radiation - which usually is critical in the underhood environment and also turns out to be one of the most computationally expensive components of underhood simulations. This report starts off with the original work plan as elucidated in the proposal in section B. This is followed by Technical work plan to accomplish the goals of the project in section C. In section D, background to the current work is provided with references to the previous efforts this project leverages on. The results are discussed in section 1E. This report ends with conclusions and future scope of work in section F.

Pannala, S.; D'Azevedo, E.; Zacharia, T.

2002-02-26T23:59:59.000Z

195

Radiation Safety Program Annual Review  

E-Print Network [OSTI]

........................................................................10 AREA RADIATION SURVEYS AND CONTAMINATION CONTROL...........................................11.....................................................................................................13 RADIOACTIVE WASTE MANAGEMENT meetings of the Radiation Safety Committee where new users and uses of radioactive materials, radiation

Lyubomirsky, Ilya

196

DOE Radiation Records Contacts List  

Broader source: Energy.gov [DOE]

DOE radiation records contact list for individuals to obtain records of occupational exposure directly from a DOE site.

197

Radiator Labs | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Radiator Labs Radiator Labs National Clean Energy Business Plan Competition Radiator Labs Columbia University More than 14 million housing units, or 10 percent of the national housing stock, is heated by steam and hot water. Steam heating, which represents the majority of this market, is particularly inefficient, and is characterized by a central source of steam generation with a convective distribution system via a network of pipes and radiators. There is no way to control heat transfer through this network, so building managers configure boiler systems to treat a building as a single zone keeping the coldest apartment above a minimum statutory temperature. This results in overheating of the other spaces in the building due to differences in exposure, level of insulation, distribution system heating,

198

Radiator Labs | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Competition » Radiator Labs Competition » Radiator Labs National Clean Energy Business Plan Competition Radiator Labs Columbia University More than 14 million housing units, or 10 percent of the national housing stock, is heated by steam and hot water. Steam heating, which represents the majority of this market, is particularly inefficient, and is characterized by a central source of steam generation with a convective distribution system via a network of pipes and radiators. There is no way to control heat transfer through this network, so building managers configure boiler systems to treat a building as a single zone keeping the coldest apartment above a minimum statutory temperature. This results in overheating of the other spaces in the building due to differences in exposure, level of insulation, distribution system heating,

199

Radiator Labs | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Competition » Radiator Labs Competition » Radiator Labs National Clean Energy Business Plan Competition Radiator Labs Columbia University More than 14 million housing units, or 10 percent of the national housing stock, is heated by steam and hot water. Steam heating, which represents the majority of this market, is particularly inefficient, and is characterized by a central source of steam generation with a convective distribution system via a network of pipes and radiators. There is no way to control heat transfer through this network, so building managers configure boiler systems to treat a building as a single zone keeping the coldest apartment above a minimum statutory temperature. This results in overheating of the other spaces in the building due to differences in exposure, level of insulation, distribution system heating,

200

Radiation.cdr  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

An average American's exposure is about 620 millirems per year from naturally occurring and other sources. Other Factors Background radiation varies with location....

Note: This page contains sample records for the topic "radiation exposure managing" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


201

WI Radiation Protection  

Broader source: Energy.gov [DOE]

This statute seeks to regulate radioactive materials, to encourage the constructive uses of radiation, and to prohibit and prevent exposure to radiation in amounts which are or may be detrimental...

202

Spectroscopy 16 (2002) 121125 121 Synchrotron radiation circular dichroism  

E-Print Network [OSTI]

undamaged even after long periods of exposure in the Synchroton Radiation Circular Dichroism (SRCD) beam [2

Wallace, Bonnie Ann

203

The Polyamine Catabolic Enzyme SAT1 Modulates Tumorigenesis and Radiation Response in GBM  

Science Journals Connector (OSTI)

...Introduction Exposure to ionizing radiation is a well-established...moderate to high-dose radiation exposure. Examples include...atomic bomb survivors in Japan, women treated with repeated exposure to radiation from fluoroscopic chest...

Adina Brett-Morris; Bradley M. Wright; Yuji Seo; Vinay Pasupuleti; Junran Zhang; Jun Lu; Raffaella Spina; Eli E. Bar; Maneesh Gujrati; Rebecca Schur; Zheng-Rong Lu; and Scott M. Welford

2014-12-01T23:59:59.000Z

204

E-Print Network 3.0 - arrbod acute radiation Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

... 5 Summary: to years). Exposure to naturally occurring background radiation is an example of chronic exposure. Acute......

205

E-Print Network 3.0 - acute radiation effects Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

... 5 Summary: to years). Exposure to naturally occurring background radiation is an example of chronic exposure. Acute......

206

management  

National Nuclear Security Administration (NNSA)

5%2A en Management and Budget http:nnsa.energy.govaboutusouroperationsmanagementandbudget

P...

207

Effects of Solar UV Radiation on Morphology and Photosynthesis of Filamentous Cyanobacterium Arthrospira platensis  

Science Journals Connector (OSTI)

...time of exposure to solar radiation (E and F). (A and...E and F) daily solar doses during the exposure period...Cyanobacteria growth & development radiation effects ultrastructure Dose-Response Relationship, Radiation Photosynthesis radiation...

Hongyan Wu; Kunshan Gao; Virginia E. Villafañe; Teruo Watanabe; E. Walter Helbling

2005-09-01T23:59:59.000Z

208

ORISE: REAC/TS Radiation Treatment Medications  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Radiation Treatment Medications Radiation Treatment Medications The Radiation Emergency Assistance Center/Training Site (REAC/TS) is a valuable resource in the use of drug therapies to treat radiation exposure. REAC/TS maintains a repository of clinical information and qualified staff provide expertise to practitioners worldwide on the use of calcium and zinc diethylenetriaminepentaacetic acid (DTPA) and Radiogardase (Prussian Blue). Calcium-DTPA and zinc-DTPA are injectable chelating agents used to enhance the excretion of plutonium and other transuranics from the body. Radiogardase (Prussian Blue) binds to radiocesium and thallium and enhances their excretion from the body. Before the events of Sept. 11, 2001, REAC/TS managed the Investigational New Drug (IND) status for DTPA and Prussian Blue. In support of our

209

Radiation protection: Natural radiation risks  

Science Journals Connector (OSTI)

... radiation to which humans are exposed consists of four components - cosmic, gamma, internal, radon. The relative contribution that each makes to the sum is shown in the chart. ... but exposure of the whole body to terrestrial gamma rays and of the lungs to radon daughters are influenced by the nature and location of housing. Gamma rays are emitted ...

M. C. O'Riordan

1983-11-17T23:59:59.000Z

210

Exposure to Ionizing Radiation and Estimate of Secondary Cancers in the Era of High-Speed CT Scanning: Projections From the Medicare Population  

Science Journals Connector (OSTI)

Purpose The aims of this study were to analyze the distribution and amount of ionizing radiation delivered by CT scans in the modern era of high-speed CT and to estimate cancer risk in the elderly, the patient group most frequently imaged using CT scanning. Methods A retrospective cohort study was conducted using Medicare claims spanning 8 years (1998-2005) to assess CT use. The data were analyzed in two 4-year cohorts, 1998 to 2001 (n = 5,267,230) and 2002 to 2005 (n = 5,555,345). The number and types of CT scans each patient received over the 4-year periods were analyzed to determine the percentage of patients exposed to threshold radiation of 50 to 100 mSv (defined as low) and >100 mSv (defined as high). The National Research Council's Biological Effects of Ionizing Radiation VII models were used to estimate the number of radiation-induced cancers. Results CT scans of the head were the most common examinations in both Medicare cohorts, but abdominal imaging delivered the greatest proportion (43% in the first cohort and 40% in the second cohort) of radiation. In the 1998 to 2001 cohort, 42% of Medicare patients underwent CT scans, with 2.2% and 0.5% receiving radiation doses in the low and high ranges, respectively. In the 2002 to 2005 cohort, 50% of Medicare patients received CT scans, with 4.2% and 1.2% receiving doses in the low and high ranges. In the two populations, 1,659 (0.03%) and 2,185 (0.04%) cancers related to ionizing radiation were estimated, respectively. Conclusions Although radiation doses have been increasing along with the increasing reliance on CT scans for diagnosis and therapy, using conservative estimates with worst-case scenario methodology, the authors found that the risk for secondary cancers is low in older adults, the group subjected to the most frequent CT scanning. Trends showing increasing use, however, underscore the importance of monitoring CT utilization and its consequences.

Aabed B. Meer; Pat A. Basu; Laurence C. Baker; Scott W. Atlas

2012-01-01T23:59:59.000Z

211

ORISE Radiation Emergency Assistance Center/Training Site (REAC/TS):  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Capabilities Capabilities REAC/TS offers medical management of radiation incidents, consultation and training in radiation emergency medicine REAC/TS staff member providing medical assistance Recognized around the world for its expertise in the medical management of radiation incidents, the Radiation Emergency Assistance Center/Training Site (REAC/TS) at the Oak Ridge Institute for Science and Education (ORISE) provides radiation incident response, consultation and preparedness training, and participates in simulation exercises to address the medical aspects of human exposure to ionizing radiation. As REAC/TS continues to establish international partnerships through education, exercises and conferences, the group is strengthening radiological emergency preparedness and response around the globe. REAC/TS

212

Molecular Pathways: Targeted ?-Particle Radiation Therapy  

Science Journals Connector (OSTI)

...and profibrotic cytokines. Radiation-induced malignancy can...1-5 Gy). Kyoji Furukawa (Radiation Effect Research Foundation, Hiroshima, Japan) reviewed the Japanese atomic...late effects of ionizing radiation exposure at low/moderate...

Kwamena E. Baidoo; Kwon Yong; and Martin W. Brechbiel

2013-02-01T23:59:59.000Z

213

Resistance of Marine Bacterioneuston to Solar Radiation  

Science Journals Connector (OSTI)

...of Marine Bacterioneuston to Solar Radiation Helene Agogue Fabien...after exposure to simulated solar radiation. Bacterioneuston...estimate of their screening capacity. Appl. Environ. Microbiol...D. P. 2000. Effects of solar UV-B radiation on aquatic...

Hélène Agogué; Fabien Joux; Ingrid Obernosterer; Philippe Lebaron

2005-09-01T23:59:59.000Z

214

Low Dose Radiation Program: Radiation Biology and the Radiation Research  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Biology and the Radiation Research Program Biology and the Radiation Research Program The Department of Energy (DOE) and its predecessor organizations, Energy Research and Development Agency (ERDA) and Atomic Energy Commission (AEC), always have been concerned about the health effects of ionizing radiation. Extensive research has been conducted under their sponsorship at all levels of biological organization from molecules to man. Over the past 60 years, studies using every type of radiation source have included exposure to both external radiation sources and to internally deposited radioactive materials. These exposures used different dose patterns and distributions delivered over a wide range of experimental times. This extensive research provided the basis for the new Low Dose Radiation Research Program, linking

215

Depleted uranium exposure and health effects in Gulf War veterans  

Science Journals Connector (OSTI)

...Environmental Management Project (Fernald Environmental Management Project 1997; McDiarmid...Lyon, France:International Agency for Research...following exposure to radon daughters and uranium...Environmental Management Project (FEMP). 1997...

2006-01-01T23:59:59.000Z

216

Radiation doses for Marshall Islands Atolls Affected by U.S. Nuclear Testing:All Exposure Pathways, Remedial Measures, and Environmental Loss of 137Cs  

SciTech Connect (OSTI)

The United States conducted 24 nuclear tests at Bikini Atoll with a total yield of 76.8 Megatons (MT). The Castle series produced about 60% of this total and included the Bravo test that was the primary source of contamination of Bikini Island and Rongelap and Utrok Atolls. One of three aerial drops missed the atoll and the second test of the Crossroads series, the Baker test, was an underwater detonation. Of the rest, 17 were on barges on water and 3 were on platforms on an island; they produced most of the contamination of islands at the atoll. There were 42 tests conducted at Enewetak Atoll with a total yield of 31.7 MT (Simon and Robison, 1997; UNSCEAR, 2000). Of these tests, 18 were on a barge over wateror reef, 7 were surface shots, 2 aerial drops, 2 under water detonations, and 13 tower shots on either land or reef. All produced some contamination of various atoll islands. Rongelap Atoll received radioactive fallout as a result of the Bravo test on March 1, 1954 that was part of the Castle series of tests. This deposition was the result of the Bravo test producing a yield of 15 MT, about a factor of three to four greater than the predicted yield that resulted in vaporization of more coral reef and island than expected and in the debris-cloud reaching a much higher altitude than anticipated. High-altitude winds were to the east at the time of detonation and carried the debris-cloud toward Rongelap Atoll. Utrok Atoll also received fallout from the Bravo test but at much lower air and ground-level concentrations than at Rongelap atoll. Other atolls received Bravo fallout at levels below that of Utrok [other common spellings of this island and atoll (Simon, et al., 2009)]. To avoid confusion in reading other literature, this atoll and island are spelled in a variety of ways (Utrik, Utirik, Uterik or Utrok). Dose assessments for Bikini Island at Bikini Atoll (Robison et al., 1997), Enjebi Island at Enewetak Atoll (Robison et al., 1987), Rongelap Island at Rongelap Atoll (Robison et al., 1994; Simon et al., 1997), and Utrok Island at Utrok Atoll (Robison, et al., 1999) indicate that about 95-99% of the total estimated dose to people who may return to live at the atolls today (Utrok Island is populated) is the result of exposure to {sup 137}Cs. External gamma exposure from {sup 137}Cs in the soil accounts for about 10 to 15% of the total dose and {sup 137}Cs ingested during consumption of local food crops such as drinking coconut meat and fluid (Cocos nucifera L.), copra meat and milk, Pandanus fruit, and breadfruit accounts for about 85 to 90%. The other 1 to 2% of the estimated dose is from {sup 90}Sr, {sup 239+240}Pu, and {sup 241}Am. The {sup 90}Sr exposure is primarily through the food chain while the exposure to {sup 239+240}Pu, and {sup 241}Am is primarily via the inhalation pathway as a result of breathing re-suspended soil particles.

Robison, W L; Hamilton, T F

2009-04-20T23:59:59.000Z

217

Radiation Emergency Assistance Center/Training Site: How ORISE is Making a  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

How ORISE is Making a Difference How ORISE is Making a Difference As an invaluable international resource in the medical management of radiation emergencies, the Radiation Emergency Assistance Center/Training Site (REAC/TS) provides incident response and consultation, continuing medical education and simulation exercises to countries around the globe. REAC/TS, a U.S. Department of Energy emergency response asset, also provides assistance and expertise to federal and state agencies in preparing their emergency management and first responder personnel for incidents involving human exposure to radiation. Listed below are just a few examples of how REAC/TS' training and emergency response capabilities are making a difference in the medical management of radiation incidents: Cytogenetics biodosimetry dicentric analysis

218

Radiation-Induced Bystander Effects and Relevance to Human Radiation  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Radiation-Induced Bystander Effects and Relevance to Human Radiation Radiation-Induced Bystander Effects and Relevance to Human Radiation Exposures Review of phenomenon appears in Radiation Research Pamela Sykes and Benjamin Blyth One concern of radiobiologists is the effect radiation exposure might have on nearby unirradiated cells. For example, when only a small fraction of cells are directly hit by radiation energy, are the surrounding unirradiated cells also at an increased risk of cancer? The term "radiation-induced bystander effect" is used to describe radiation-induced biological changes that occur in unirradiated cells within an irradiated cell population. Radiation-induced bystander effects have become established in the vernacular and are considered as an authentic radiation response. However, there is still no consensus on a precise definition of the term, which

219

Lesson 4 - Ionizing Radiation | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

4 - Ionizing Radiation 4 - Ionizing Radiation Lesson 4 - Ionizing Radiation Lesson Three showed that unstable isotopes emit energy as they become more stable. This energy is known as radiation. This lesson explores forms of radiation, where radiation is found, how we detect and measure radiation, what sources of radiation people are exposed to, whether radiation is harmful, and how we can limit our exposure. Specific topics covered in this lesson include: Types of radiation Non-ionizing Ionizing Forms of ionizing radiation Alpha particles Beta particles Gamma rays Radiation Decay chain Half-life Dose Radiation measurements Sources of radiation Average annual exposure Lesson 4 - Ionizing Radiation.pptx More Documents & Publications DOE-HDBK-1130-2008 DOE-HDBK-1130-2008 DOE-HDBK-1130-2007

220

radiation.cdr  

Office of Legacy Management (LM)

Radiation-It's a Fact of Life Radiation-It's a Fact of Life It has been with us since the beginning of time. Everyone who has ever walked on this planet has been exposed to radiation. For the most part, nature is the largest source of exposure. It's in the air we breathe, the ground we walk on, and even the food we eat. The radiation we receive from all natural and some man-made sources is called "background radiation." The millirem (mrem) is a unit used for measuring radiation received by a person. The total average background for radiation received by people living in the United States is 360 millirem per year (mrem/yr), of which 300 mrem/yr is from natural sources, and 60 mrem/yr is man-made. Cosmic Radiation from the sun and stars Internal Radiation from naturally radioactive

Note: This page contains sample records for the topic "radiation exposure managing" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


221

Low Dose Radiation Program: Links - Agencies with Radiation Regulatory  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Agencies with Radiation Regulatory Concerns and Involvement Agencies with Radiation Regulatory Concerns and Involvement Biological Effects of Low Level Exposures (BELLE) Canadian Nuclear Safety Commission Center for Risk Excellence Health Protection Agency The Health Risks of Extraterrestrial Environments International Commission on Radiation Units and Measurements, Inc. International Commission on Radiological Protection (ICRP) International Radiation Protection Association (IRPA) NASA Space Radiation Program National Academy of Sciences (NAS) Nuclear and Radiation Studies Board National Aeronautics and Space Administration (NASA) NASA OBRR Task Book Publication National Council on Radiation Protection (NCRP) National Institute of Environmental Health Sciences (NIEHS) National Toxicology Program (NTP) Occupational Safety and Health Administration (OSHA)

222

Radiation Machines and Radioactive Materials (Iowa)  

Broader source: Energy.gov [DOE]

These chapters describe general provisions and regulatory requirements; registration, licensure, and transportation of radioactive materials; and exposure standards for radiation protection.

223

Targeted and Nontargeted Effects of Low-Dose Ionizing Radiation on Delayed Genomic Instability in Human Cells  

Science Journals Connector (OSTI)

...humans receive some radiation exposure, mostly...risks associated with radiation exposure come from populations exposed to ionizing radiation, primarily from epidemiologic...However, those doses, in the range of 0.2 to 2.5...

Lei Huang; Perry M. Kim; Jac A. Nickoloff; and William F. Morgan

2007-02-01T23:59:59.000Z

224

Department of Environmental Health & Safety Risk Management Services  

E-Print Network [OSTI]

Department of Environmental Health & Safety Risk Management Services 3-107 Research Transition of Insurance Policy Standards Department of Management Services Protective Services Management & Risk ______________________________________________ ________________________________________________ Radiation Protection Manager Signature Member, Radiation Safety Committee Signature

Machel, Hans

225

Revised analyses of decommissioning for the reference boiling water reactor power station. Effects of current regulatory and other considerations on the financial assurance requirements of the decommissioning rule and on estimates of occupational radiation exposure - appendices. Final report  

SciTech Connect (OSTI)

The NRC staff is in need of decommissioning bases documentation that will assist them in assessing the adequacy of the licensee submittals, from the viewpoint of both the planned actions, including occupational radiation exposure, and the probable costs. The purpose of this reevaluation study is to update the needed bases documentation. This report presents the results of a review and reevaluation of the PNL 1980 decommissioning study of the Washington Public Power Supply System`s Washington Nuclear Plant Two (WNP-2) located at Richland, Washington, including all identifiable factors and cost assumptions which contribute significantly to the total cost of decommissioning the plant for the DECON, SAFSTOR, and ENTOMB decommissioning alternatives. These alternatives now include an initial 5-7 year period during which time the spent fuel is stored in the spent fuel pool prior to beginning major disassembly or extended safe storage of the plant. Included for information (but not presently part of the license termination cost) is an estimate of the cost to demolish the decontaminated and clear structures on the site and to restore the site to a {open_quotes}green field{close_quotes} condition. This report also includes consideration of the NRC requirement that decontamination and decommissioning activities leading to termination of the nuclear license be completed within 60 years of final reactor shutdown, consideration of packaging and disposal requirements for materials whose radionuclide concentrations exceed the limits for Class C low-level waste (i.e., Greater-Than-Class C), and reflects 1993 costs for labor, materials, transport, and disposal activities. Sensitivity of the total license termination cost to the disposal costs at different low-level radioactive waste disposal sites, to different depths of contaminated concrete surface removal within the facilities, and to different transport distances is also examined.

Smith, R.I.; Bierschbach, M.C.; Konzek, G.J.; McDuffie, P.N.

1996-07-01T23:59:59.000Z

226

Solar UV radiation reduces the barrier function of human skin  

Science Journals Connector (OSTI)

Solar UV radiation reduces the barrier function...Stanford, CA 94305 The ubiquitous presence of solar UV radiation in human life is essential for...defense against environmental exposures like solar UV radiation, and its effects on UV targets...

Krysta Biniek; Kemal Levi; Reinhold H. Dauskardt

2012-01-01T23:59:59.000Z

227

Ionizing Radiation Activates the Nrf2 Antioxidant Response  

Science Journals Connector (OSTI)

...Scientific). Results Ionizing radiation does not activate ARE-reporter...determine if exposure to varying doses of ionizing radiation would activate the Nrf2-ARE pathway. The radiation dose range was extended below that used...

J. Tyson McDonald; Kwanghee Kim; Andrew J. Norris; Erina Vlashi; Tiffany M. Phillips; Chann Lagadec; Lorenza Della Donna; Josephine Ratikan; Heather Szelag; Lynn Hlatky; and William H. McBride

2010-11-01T23:59:59.000Z

228

2013 DOE Occupational Radiation Exposure Report Appendices  

Office of Environmental Management (EM)

Name Year Reported * 6202304 LATAParralax Portsmouth LLC Princeton Plasma Physics Laboratory 1005003 Princeton Plasma Physics Laboratory ...

229

DOE 2012 Occupational Radiation Exposure Report  

Office of Environmental Management (EM)

changed as a result of adopting ICRP 60 dosimetry system; u Used the ICRP 68 dose conversion factors to determine values for the derived air concentrations (DACs); and u Adopted...

230

Radiation Exposure Monitoring Systems - Other Related Sites ...  

Office of Environmental Management (EM)

Other Related Sites DOE - Main Home Page - the home page for all DOE information and web sites. DOE EHSS Information Portal - source for EHSS information across the complex....

231

Radiation Safety Edward O'Connell  

E-Print Network [OSTI]

tissues) #12;Sources of Background Radiation Exposure · Naturally occurring radioactive materialsRadiation Safety Edward O'Connell Radiation Safety Officer Stony Brook University New York #12;STONY BROOK UNIVERSITY & U. HOSPITAL MEDICAL CENTER #12;Why Radiation Safety · Working with radioactive

232

Radiation dose in dental radiology  

Science Journals Connector (OSTI)

...The aim of this study was to compare radiation exposure in panoramic radiography (PR), dental CT, and digital volume tomography (DVT) ... at appropriate locations were exposed as in a dental examination. In PR...

M. Cohnen; J. Kemper; O. Möbes; J. Pawelzik; U. Mödder

2002-03-01T23:59:59.000Z

233

Standardisation of radiation portal monitor controls and readouts  

Science Journals Connector (OSTI)

......Standardisation of radiation portal monitor controls...numbering configuration of radiation portal monitor sensing...addition, second-party software that changes the alarm...Neutrons Nuclear Weapons Radiation Monitoring methods Radiation...Risk Assessment methods Safety Management methods standards......

M. Tinker

2010-10-01T23:59:59.000Z

234

E-Print Network 3.0 - acute radiation proctitis Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

2001... ACUTE RADIATION SYN BIR Published by The British Institute of Ra Diagnosis Triage primary... Management MEDICAL MANAGEMENT OF RADIATION ACCIDENTS Edited by T M Fliedner, I...

235

Track 3: Exposure Hazards  

Broader source: Energy.gov [DOE]

ISM Workshop Presentations Knoxville Convention Center, Knoxville, TN August 2009 Track 3: Exposure Hazards

236

RADIATION SAFETY COMMITTEE The Radiation Safety Committee shall advise the Provost on all policy matters relating to radiation safety;  

E-Print Network [OSTI]

RADIATION SAFETY COMMITTEE Functions The Radiation Safety Committee shall advise the Provost on all policy matters relating to radiation safety; formulate campus radiation safety policies in compliance the Risk Manager) monitor the performance of the Radiation Safety Officer as it relates to implementation

Sze, Lawrence

237

E-Print Network 3.0 - acute whole-body exposure Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

radiation exposure is expressed in a unit called... of approximatly 360 mrem ... Source: Yucca Mountain Project, US EPA Collection: Environmental Sciences and Ecology 2 Influence...

238

Solid cancer incidence among the Chernobyl emergency workers residing in Russia: estimation of radiation risks  

Science Journals Connector (OSTI)

For the method of radiation dose measurement, the dosimetric data for the studied... 1. Exposure or absorbed dose recorded...

V. K. Ivanov; A. I. Gorski; A. F. Tsyb…

2004-05-01T23:59:59.000Z

239

FINAL REPORT EXPOSURE SCENARIOS FOR USE IN  

E-Print Network [OSTI]

FINAL REPORT EXPOSURE SCENARIOS FOR USE IN ESTIMATING RADIATION DOSES TO THE PUBLIC FROM HISTORICAL for use in the estimation of doses to reference individuals due to atmospheric releases of radionuclides). This report was prepared in response to Task 3 of the INEL dose reconstruction study commissioned

240

Senior Technical Safety Manager Qualification Standard Reference...  

Office of Environmental Management (EM)

and establishes criteria, standards, and policies to control radiation and indoor air pollution exposures. The Office of Solid Waste and Emergency Response administers...

Note: This page contains sample records for the topic "radiation exposure managing" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


241

Radiation Emergency Medicine Fact Sheet  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Improving Global Response Improving Global Response to Radiation Emergencies Improving Radiation Emergency Response Through Education and Specialized Expertise In the event of a radiological or nuclear incident, first responders as well as hospital and emergency management personnel must call on their knowledge and training to provide immediate and effective care for victims. Through practical, hands-on education programs, Oak Ridge Associated Universities (ORAU) is improving global response to radiation emergencies. In addition, dedicated 24/7 deployable teams of physicians, nurses, and health physicists from the Radiation Emergency Assistance Center/Training Site (REAC/TS), which is managed by ORAU for DOE/NNSA, provide expert medical management of radiological incidents

242

Process for Transition of Uranium Mill Tailings Radiation Control Act Title II Disposal Sites to the U.S. Department of Energy Office of Legacy Management for Long-Term Surveillance and Maintenance  

SciTech Connect (OSTI)

This document presents guidance for implementing the process that the U.S. Department of Energy (DOE) Office of Legacy Management (LM) will use for assuming perpetual responsibility for a closed uranium mill tailings site. The transition process specifically addresses sites regulated under Title II of the Uranium Mill Tailings Radiation Control Act (UMTRCA) but is applicable in principle to the transition of sites under other regulatory structures, such as the Formerly Utilized Sites Remedial Action Program.

none,

2012-03-01T23:59:59.000Z

243

Radiation prevents much cancer  

Science Journals Connector (OSTI)

Evidence reviewed here supports the concept that chronic exposure to ionising radiation can dramatically decrease cancer incidence and mortality. This evidence includes an inverse relationship between radiation levels and cancer induction and/or mortality in: over 200 million people in the USA; 200 million people in India; 10,000 residents of Taipei who live in cobalt-60 contaminated homes; high radiation areas of Ramsar, Iran; 12 million person-years of exposed and carefully selected control nuclear workers; almost 300,000 homes with radon in the USA; non-smokers in high radon areas of Saxony, Germany.

T.D. Luckey

2007-01-01T23:59:59.000Z

244

Miniaturized radiation chirper  

DOE Patents [OSTI]

The disclosure relates to a miniaturized radiation chirper for use with a small battery supplying on the order of 5 volts. A poor quality CdTe crystal which is not necessarily suitable for high resolution gamma ray spectroscopy is incorporated with appropriate electronics so that the chirper emits an audible noise at a rate that is proportional to radiation exposure level. The chirper is intended to serve as a personnel radiation warning device that utilizes new and novel electronics with a novel detector, a CdTe crystal. The resultant device is much smaller and has much longer battery life than existing chirpers.

Umbarger, C. John (Los Alamos, NM); Wolf, Michael A. (Los Alamos, NM)

1980-01-01T23:59:59.000Z

245

Ultraviolet Exposure and Mortality among Women in Sweden  

Science Journals Connector (OSTI)

...questions using detailed data on solar and artificial UV exposure during...843 subjects with a total energy intake outside the 1st and 99th...Risks to Humans Volume 55: Solar and Ultraviolet Radiation...Boscoe FP , Schymura MJ.Solar ultraviolet-B exposure and...

Ling Yang; Marie Lof; Marit Bragelien Veierød; Sven Sandin; Hans-Olov Adami; and Elisabete Weiderpass

2011-04-01T23:59:59.000Z

246

Radiation Protection Group Annual Report 2003  

E-Print Network [OSTI]

The RP Annual Report summarises the activities carried out by CERN’s Radiation Protection Group in the year 2003. It includes contribution from the EN section of the TIS/IE Group on environmental monitoring. Chapter 1 reports on the measurements and estimations of the impact on the environment and public exposure due to the Organisation’s activities. Chapter 2 provides the results of the monitoring of CERN’s staff, users and contractors to occupational exposure. Chapter 3 deals with operational radiation protection around the accelerators and in the experimental areas. Chapter 4 reports on RP design studies for the LHC and CNGS projects. Chapter 5 addresses the various services provided by the RP Group to other Groups and Divisions at CERN, which include managing radioactive waste, high-level dosimetry, lending radioactive test sources and shipping radioactive materials. Chapter 6 describes activities other than the routine and service tasks, i.e. development work in the field of instrumentation and res...

Silari, M

2004-01-01T23:59:59.000Z

247

Quick management of accidental tritium exposure cases  

Science Journals Connector (OSTI)

......as it turns into the regulatory dose limit. The slow...reference point for action plans against tritium removal...the boundary line of regulatory dose limits, the individual...incident) becomes below regulatory dose limits. CONCLUSIONS...Technol. ITER design review: tritium issues. Fusion......

Vishwanath P. Singh; N. M. Badiger; S. S. Managanvi; H. R. Bhat

2012-07-01T23:59:59.000Z

248

Los Alamos Lab: Radiation Protection: Annual Occupational Radiation  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Annual Occupational Radiation Dosimetry Report Print information on Annual Occupational Radiation Dosimetry Report (pdf). This webpage provides information to help you understand the dose quantities being reported to you on your Annual Occupational Radiation Dosimetry Report. If you would like general information about radiation exposure, please refer to www.radiationanswers.org. Title 10 Code of Federal Regulation Part 835, Occupational Radiation Protection (10 CFR 835), requires assessment, recording and reporting of radiation doses to individuals who are exposed to sources of radiation or radioactive contamination. This includes assessing external exposure from a variety of radiation types, such as, beta, photon, and neutron radiation. External exposures may be uniform over the whole body or occur in a non-uniform (i.e., limited body location) fashion. Internal doses occur when radioactive material is taken into the body through ingestion, inhalation, absorption or wounds. The requirements include assessing doses to the whole body, skin, lens of the eyes, extremities and various organs and tissues.

249

Radiation effects on humans  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Radiation effects on humans Radiation effects on humans Name: Joe Kemna Location: N/A Country: N/A Date: N/A Question: I am trying to find information on radiation. I need the effects on humans, the damage it causes to the environment, and any extra information you might have on the subject. Thank you for your time. Replies: Your library should be a good place to start, but first you need to narrow your question a bit. "Radiation" means radio waves, heat, light (including the ultraviolet light that causes suntan and sunburn), and what's called "ionizing radiation." By far the major source of the first three is the Sun, while the last I believe comes principally from cosmic rays and various naturally radioactive elements like uranium and radon. The most significant manmade sources of exposure would --- I think --- be household wiring and appliances (radio), engines and heating devices (heat), lamps (light), and X-ray machines, flying at high altitude in airplanes, and living in well-insulated homes built over radon sources (ionizing radiation). Heat, light and ionizing radiation play vital roles in the ecology of the Earth. Radio, light (in particular "tanning" ultraviolet), and ionizing radiation have all been widely assumed at different times to be particularly good or particularly bad for human health. Some recent issues of public concern have been the effect of radio waves from electric transmission lines, the effect on skin cancer incidence from tanning and sunburns, the depletion of the ultraviolet-light-produced ozone in the upper atmosphere by chlorofluorocarbons (CFCs), "global warming" from the increased absorption of heat radiation from the surface by atmospheric carbon dioxide and methane, and the effect of a long exposure to low levels of ionizing radiation as for example the people of Eastern Europe are experiencing from the Chernobyl nuclear power plant accident.

250

The Association between Cancers and Low Level Radiation: an evaluation of the epidemiological evidence at the Hanford Nuclear Weapons Facility  

E-Print Network [OSTI]

indiv. indiv. Gilbertetal. (Hanford & Combined) Gilbertetal.on both radiation and the Hanford facility. The data used toG. Radiation exposures of Hanford workers dying from cancer

Britton, Julie

2010-01-01T23:59:59.000Z

251

Quality management system and accreditation of the in vivo monitoring laboratory at Karslruhe Institue of Technology  

Science Journals Connector (OSTI)

......Laboratory, Institute for Radiation Research, Karlsruhe Institute...Development Quality Control Radiation Monitoring methods standards Radiation Protection methods standards...Radiometry methods standards Safety Software Total Quality Management......

B. Breustedt; U. Mohr; N. Biegard; G. Cordes

2011-03-01T23:59:59.000Z

252

Radiation and viral DNA  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Radiation and viral DNA Radiation and viral DNA Name: Loretta L Lamb Age: N/A Location: N/A Country: N/A Date: N/A Question: Can viral DNA be changed through exposure to radiation? If so, what type of radiation will do this? Can these irradiated viruses cause changes in the genome of any human cells they may infect? Can these (or any) viruses actually cause cancer, or do they merely act as triggering devices for cancer? Replies: In theory, any nucleic acid (viral or otherwise) can be changed by exposure to many kinds of radiation. Depending on the type of virus, these may then change the human cells that they infect. Although there are many different things that are being implicated in causing cancers, it looks like a fairly common model involves the sequential "knockout" of several human genes. Viruses may be one cause of such gene changes, radiation and other environmental causes may also contribute. Some of these changes may be inherited through families, so it becomes more likely that the environmental factors may happen to "hit" the right places in cells to cause cancers in these families. If you ask something more specific, perhaps I can focus my response a bit more

253

Russian Health Studies Program - Relationship to Other Radiation...  

Office of Environmental Management (EM)

the Mayak workers had long-term exposures (10 to 30 years) to plutonium, gamma, and neutron radiation. This combination of radiation types over a working lifetime is more...

254

Radiation Sensitivity of Leukemic Progenitor Cells in Acute Nonlymphocytic Leukemia  

Science Journals Connector (OSTI)

...Foundation, Hiroshima, Japan; 2Hiroshima University...Dentistry, Hiroshima, Japan. Background: Epidemiological...A-bomb) survivors by the Radiation Effects Research Foundation...distal colorectum to radiation exposure. Citation Format...atomic bomb survivors in Japan. [abstract]. In...

Keiya Ozawa; Yasusada Miura; Toshio Suda; Kazuo Motoyoshi; and Fumimaro Takaku

1983-05-01T23:59:59.000Z

255

Enhanced Sensitivity of the RET Proto-Oncogene to Ionizing Radiation In vitro  

Science Journals Connector (OSTI)

...the RET sensitivity to ionizing radiation exposure, and to elucidate...were first exposed to ionizing radiation, electrophoresed in...Table 1 Table 1. Range of tail moment in non...for comet Radiation dose Cell line Range of tail...

Claudia Béu Volpato; Minerva Martínez-Alfaro; Raffaella Corvi; Coralie Gabus; Sylvie Sauvaigo; Pietro Ferrari; Elena Bonora; Alessandro De Grandi; and Giovanni Romeo

2008-11-01T23:59:59.000Z

256

Extremely Low Dose Ionizing Radiation Up-regulates CXC Chemokines in Normal Human Fibroblasts  

Science Journals Connector (OSTI)

...with radiation exposure (1). Ionizing radiation at moderate and higher doses (0.1-10 Gy) can produce DNA strand...death. Studies of mutants sensitive to ionizing radiation at this range of doses have revealed that the responsible genes...

Akira Fujimori; Ryuichi Okayasu; Hiroshi Ishihara; Satoshi Yoshida; Kiyomi Eguchi-Kasai; Kumie Nojima; Satoru Ebisawa; and Sentaro Takahashi

2005-11-15T23:59:59.000Z

257

Ionizing-Radiation Resistance in the Desiccation-Tolerant CyanobacteriumChroococcidiopsis  

Science Journals Connector (OSTI)

...differences between radiation-resistant and radiation-susceptible microorganisms...after exposure to high doses of X rays ranging...cultures used for radiation experiments were 3-month-old...Goleta, Calif.). Estimation of survival. To determine...

Daniela Billi; E. Imre Friedmann; Kurt G. Hofer; Maria Grilli Caiola; Roseli Ocampo-Friedmann

2000-04-01T23:59:59.000Z

258

E-Print Network 3.0 - arsenic exposure induces Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Ecology ; Environmental Management and Restoration Technologies 6 Associations Between Drinking Water and Urinary Arsenic Levels and Skin Lesions in Summary: to the exposure...

259

In-Situ Decommissioning: A Strategy for Environmental Management |  

Broader source: Energy.gov (indexed) [DOE]

In-Situ Decommissioning: A Strategy for Environmental Management In-Situ Decommissioning: A Strategy for Environmental Management In-Situ Decommissioning: A Strategy for Environmental Management In-Situ Decommissioning (ISD) is an effective decommissioning practice offering a safe and environmentally-favorable alternative to completely demolishing a facility and transporting its debris elsewhere for disposal. Regulatory approval to decommission a facility through ISD is authorized primarily by the Environmental Protection Agency under the Comprehensive Environmental Response, Compensation and Liability Act (CERCLA). In addition, Federal Facility Agreements and local stakeholder agreements have a direct influence on ISD approval and oversight. The ISD approach limits radiation exposure and industrial hazards to workers to a greater extent than larger scale cleanout and demolition.

260

Exposure Evaluation Process  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

symptoms, further evaluation by HCP, and recommendations from evaluation by referral. It is a clinical judgment based on the history of the exposure, including what is...

Note: This page contains sample records for the topic "radiation exposure managing" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


261

Historical estimates of external gamma exposure and collective external gamma exposure from testing at the Nevada Test Site. I. Test series through HARDTACK II, 1958  

SciTech Connect (OSTI)

In 1959, the Test Manager's Committee to Establish Fallout Doses calculated estimated external gamma exposure at populated locations based upon measurements of external gamma-exposure rate. Using these calculations and estimates of population, we have tabulated the collective estimated external gamma exposures for communities within established fallout patterns. The total collective estimated external gamma exposure is 85,000 person-R. The greatest collective exposures occurred in three general areas: Saint George, Utah; Ely, Nevada; and Las Vegas, Nevada. Three events, HARRY (May 19, 1953), BEE (March 22, 1955), and SMOKY (August 31, 1957), accounted for over half of the total collective estimated external gamma exposure. The bases of the calculational models for external gamma exposure of ''infinite exposure,'' ''estimated exposure,'' and ''one year effective biological exposure'' are explained. 4 figs., 7 tabs.

Anspaugh, L.R.; Church, B.W.

1985-12-01T23:59:59.000Z

262

Low Dose Radiation  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Ancient Salt Beds Ancient Salt Beds Repository Science Renewable Energy The WIPP Underground may be ideal to study effects of Very Low Dose Rates on Biological Systems Low Background Radiation Experiment We're all bathing in it. It's in the food we eat, the water we drink, the soil we tread and even the air we breathe. It's background radiation, it's everywhere and we can't get away from it. But what would happen if you somehow "pulled the plug" on natural background radiation? Would organisms suffer or thrive if they grew up without their constant exposure to background radiation? That's what a consortium of scientists conducting an experiment at the Waste Isolation Pilot Plant aim to find out. Despite being an underground repository for transuranic radioactive waste,

263

Method for microbeam radiation therapy  

DOE Patents [OSTI]

A method is disclosed of performing radiation therapy on a patient, involving exposing a target, usually a tumor, to a therapeutic dose of high energy electromagnetic radiation, preferably X-ray radiation. The dose is in the form of at least two non-overlapping microbeams of radiation, each microbeam having a width of less than about 1 millimeter. Target tissue exposed to the microbeams receives a radiation dose during the exposure that exceeds the maximum dose that such tissue can survive. Non-target tissue between the microbeams receives a dose of radiation below the threshold amount of radiation that can be survived by the tissue, and thereby permits the non-target tissue to regenerate. The microbeams may be directed at the target from one direction, or from more than one direction in which case the microbeams overlap within the target tissue enhancing the lethal effect of the irradiation while sparing the surrounding healthy tissue. No Drawings

Slatkin, D.N.; Dilmanian, F.A.; Spanne, P.O.

1994-08-16T23:59:59.000Z

264

Avian inhalation exposure chamber  

DOE Patents [OSTI]

An exposure system for delivering gaseous material ranging in particle size from 0.4 micrometers to 20.0 micrometers uniformly to the heads of experimental animals, primarily birds. The system includes a vertical outer cylinder and a central chimney with animal holding bottles connected to exposure ports on the vertical outer cylinder.

Briant, James K. (P.O. Box 999, Richland, WA 99352); Driver, Crystal J. (P.O. Box 999, Richland, WA 99352)

1992-01-01T23:59:59.000Z

265

Avian inhalation exposure chamber  

DOE Patents [OSTI]

An exposure system is designed for delivering gaseous material ranging in particle size from 0.4 micrometers to 20.0 micrometers uniformly to the heads of experimental animals, primarily birds. The system includes a vertical outer cylinder and a central chimney with animal holding bottles connected to exposure ports on the vertical outer cylinder. 2 figs.

Briant, J.K.; Driver, C.J.

1992-05-05T23:59:59.000Z

266

Radiation: Radiation Control (Indiana)  

Broader source: Energy.gov [DOE]

It is the policy of the state to encourage the constructive uses of radiation and to control its harmful effects. This section contains regulations pertaining to the manufacture, use,...

267

Low Dose Radiation Research Program: Impact of Genetic Factors on the  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Genetic Factors on the Heritable Effects of Paternal Exposure to Genetic Factors on the Heritable Effects of Paternal Exposure to Low-Dose Radiation Janet E. Baulch University of California, Davis Why This Project? There is concern about the possible genetic effects of low dose radiation exposure. As a result, much effort has gone towards understanding mutation of cells due to radiation exposure. While recognition of the potential for mutation from exposure to ionizing radiation has led to extensive research, less effort has been given to the possible delayed risk of radiation exposure transmitted to the offspring of the exposed parent. Data from animal models show that parental exposures to DNA-damaging agents, such as ionizing radiation, predispose the offspring to serious health effects, including cancer offspring. Additionally, data from both humans and animal

268

Chronic Low Dose Radiation Effects on Radiation Sensitivity  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Chronic Low Dose Radiation Effects on Radiation Sensitivity Chronic Low Dose Radiation Effects on Radiation Sensitivity and Chromosome Instability Induction in TK6 Cells Schwartz J.L. 1 , Jordan R. 1 , Slovic J. 1 , Moruzzi A. 1 , Kimmel R. 2 , and Liber, H.L. 3 1 University of Washington, Seattle, WA; 2 Fred Hutchinson Cancer Research Center, Seattle, WA; 3 Colorado State University, Fort Collins, Colorado There are a number of cell responses that can be detected after low dose radiation exposures including the adaptive response, low dose hypersensitivity, and induced genomic instability. The relationship between these different phenomena is unknown. In this study, we measured adaptive responses, low dose hypersensitivity, and induced genomic instability in a human B-lymphoblastoid cell model, TK6, where we could genetically modify radiation responses by either over-expression of BCL-2 or deletion of TP53. TK6

269

RADIATION PROTECTION, RADIOACTIVE WASTE MANAGEMENT AND SITE MONITORING AT THE NUCLEAR SCIENTIFIC EXPERIMENTAL AND EDUCATIONAL CENTRE IRT-SOFIA AT INRNE-BAS  

Science Journals Connector (OSTI)

......related to radioactive waste treatments and interim...site to the temporary storage of radioactive waste operated by SE . Removal...The comprehensive long-term monitoring of the IRT...protection and radioactive waste management in the design......

Al. Mladenov; D. Stankov; Tz. Nonova; K. Krezhov

2014-07-01T23:59:59.000Z

270

Radiation physics, biophysics, and radiation biology  

SciTech Connect (OSTI)

Research at the Center for Radiological Research is a multidisciplenary blend of physics, chemistry and biology aimed at understanding the mechanisms involved in the health problems resulting from human exposure to ionizing radiations. The focus is increased on biochemistry and the application of the techniques of molecular biology to the problems of radiation biology. Research highlights of the program from the past year are described. A mathematical model describing the production of single-strand and double-strand breaks in DNA as a function radiation quality has been completed. For the first time Monte Carlo techniques have been used to obtain directly the spatial distribution of DNA moieties altered by radiation. This information was obtained by including the transport codes a realistic description of the electronic structure of DNA. We have investigated structure activity relationships for the potential oncogenicity of a new generation of bioreductive drugs that function as hypoxic cytotoxins. Experimental and theoretical investigation of the inverse dose rate effect, whereby medium LET radiations actually produce an c effect when the dose is protracted, is now at a point where the basic mechanisms are reasonably understood and the complex interplay between dose, dose rate and radiation quality which is necessary for the effect to be present can now be predicted at least in vitro. In terms of early radiobiological damage, a quantitative link has been established between basic energy deposition and locally multiply damaged sites, the radiochemical precursor of DNA double strand breaks; specifically, the spatial and energy deposition requirements necessary to form LMDs have been evaluated. For the first time, a mechanically understood biological fingerprint'' of high-LET radiation has been established. Specifically measurement of the ratio of inter-to intra-chromosomal aberrations produces a unique signature from alpha-particles or neutrons.

Hall, E.J.; Zaider, M.

1993-05-01T23:59:59.000Z

271

Sun Exposure, Vitamin D Receptor Gene Polymorphisms, and Risk of Advanced Prostate Cancer  

Science Journals Connector (OSTI)

...residence in regions of higher solar radiation (46), and the difference...exposure, including residential solar radiation, outdoor activity...Texas, Wyoming, Colorado, New Mexico, Idaho, Utah, Arizona, Nevada...states of high and/or medium solar radiation. Residence in states...

Esther M. John; Gary G. Schwartz; Jocelyn Koo; David Van Den Berg; and Sue A. Ingles

2005-06-15T23:59:59.000Z

272

Management Plan Management Plan  

E-Print Network [OSTI]

; and 5) consistency with the Endangered Species Act and Clean Water Act. In addition, the management plan Plan, Management Plan Page MP­ 1 #12;Management Plan water quality standards, instream flows, privateManagement Plan Management Plan "Management and restoration programs for native salmonids have

273

VOC Exposure Metrics  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

6 6 VOC Exposure Metrics ... and "Sick Building Syndrome" Figure1: The elevated odds ratios (above unity) in this figure suggest that exposures to VOCs from water-based points and solvents are associated with a variety of sick building symptions (* indicates the OR is significant at p < 0.05; ** for p < 0.01). The indoors is often regarded as safe haven from problems associated with outdoor air pollution, but a growing number of reports have suggested that exposures in indoor environments may lead to health problems. One area in which evidence has been accumulating is the relationship between working in office buildings (as opposed to industrial exposure conditions) and a variety of health effects, such as eye, nose, and throat irritation and

274

Microenvironmental Exposures to VOCs  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Microenvironmental Exposures to VOCs Microenvironmental Exposures to VOCs Speaker(s): Miranda Loh Date: February 1, 2006 - 12:00pm Location: 90-3122 The Boston Exposure Assessment in Microenvironments (BEAM) study was designed to examine the concentration distributions of VOCs in various microenvironments in and around Boston with the main objective of reducing the uncertainties in predicting exposure levels. A suite of VOC's with potential health effects including benzene, toluene, ethylbenzene, xylenes, several chlorinated compounds and aldehydes were collected in all microenvironments. Phase I. BEAM examined common non-residential microenvironments that have not been extensively studied, in particular, dining, shopping, and transportation microenvironments. Sampling using scripted activities in these microenvironments. For some compounds,

275

Oriel UV Exposure Station  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

and a mask holder for standard 5" x 5" optical masks. Capabilities: Light Source 1000 Watt Hg(Xe) lamp Wavelength range: 220-450 nm Digital timer for exposure control with...

276

Exposure factors handbook  

SciTech Connect (OSTI)

The document provides a summary of the available data on various factors used in assessing human exposure including drinking-water consumption, consumption rates of broad classes of food including fruits, vegetables, beef, dairy products, and fish; soil ingestion; inhalation rate; skin area; lifetime; activity patterns; and body weight. Additionally, a number of specific exposure scenarios are identified with recommendations for default values to use when site-specific data are not available. The basic equations using these parameters to calculate exposure levels are also presented for each scenario. Default values are presented as ranges from typical to reasonable worst case and as frequency distributions where appropriate data were available. Finally, procedures for assessing the uncertainties in exposure assessments are also presented with illustrative examples. These procedures include qualitative and quantitative methods such as Monte Carlo and sensitivity analysis.

Konz, J.J.; Lisi, K.; Friebele, E.; Dixon, D.A.

1989-07-01T23:59:59.000Z

277

Oxidative Stress and Skeletal Health with Low Dose, Ionizing Radiation  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Oxidative Stress and Skeletal Health with Low Dose, Ionizing Radiation Oxidative Stress and Skeletal Health with Low Dose, Ionizing Radiation Globus Ruth NASA Ames Research Center Abstract Osteoporosis profoundly affects the aging U.S. population and exposure to high doses of radiation causes bone loss similar to age-related osteoporosis, although the influence of low dose radiation exposures is not known. The central hypothesis of our DOE project (NASA supplement) is that low doses of radiation modulate subsequent skeletal degeneration via oxidative pathways. Our working hypothesis is that a prior exposure to low dose radiation regulates oxidative metabolism within bone and contributes to bone loss caused either by subsequent high, challenge doses of radiation or by aging. HZE source: Because astronauts are exposed to radiation from GCR and solar

278

Tumor bulk as a prognostic factor for the management of localized aggressive non-Hodgkin’s lymphoma: a survey of the Japan lymphoma radiation therapy group  

Science Journals Connector (OSTI)

Purpose: To identify the prognostic factors that specifically predict survival rates of patients with localized aggressive non-Hodgkin’s lymphoma (NHL). Methods and Materials: The survey was carried out at 25 radiation oncology institutions in Japan in 1998. The 5-year event-free (EFS) and overall survival rates (OAS) were calculated, and univariate and multivariate analyses were done to identify which of the following factors, namely, gender, age, performance status (PS), serum lactate dehydrogenase (LDH) level, Stage (I vs. II), tumor bulk (maximum diameter), and treatment, were significant from the viewpoint of prognosis. Results: A total of 1141 patients with Stage I and II NHL were treated by the Japanese Lymphoma Radiation Therapy Group between 1988 and 1992. Of them, 787 patients, who were treated using definitive radiotherapy with or without chemotherapy for intermediate- and high-grade lymphomas in working formulation, constituted the core of this study. Primary tumors arose mainly from extranodal organs (71%) in the head and neck (Waldeyer’s ring: 36% and sinonasal cavities: 9%). The factors associated with poorer prognosis were age over 60 years old (p radiation therapy alone (p Japan than in Western countries. Tumor bulk is an important prognostic factor in patients with localized aggressive extranodal NHL. Short course chemotherapy followed by radiation therapy was associated with prolonged survival in patients with localized aggressive \\{NHLs\\} of extranodal origin and 0–1 risk factor.

Masahiko Oguchi; Hiroshi Ikeda; Kouichi Isobe; Saeko Hirota; Masatoshi Hasegawa; Katsumasa Nakamura; Keisuke Sasai; Naofumi Hayabuchi

2000-01-01T23:59:59.000Z

279

Report from the dosimetry working group to CEDR project management  

SciTech Connect (OSTI)

On August 2, 1989, Admiral Watkins, Secretary of the US Department of Energy (DOE), presented a four-point program designed to enhance the DOE epidemiology program. One part of this program was the establishment of a Comprehensive Epidemiologic Data Resource (CEDR) to facilitate independent research to validate and supplement DOE research on human health effects. A Dosimetry Working Group was formed during May 1991 to evaluate radiation dose variables and associated documentation that would be most useful to researchers for retrospective and prospective studies. The Working Group consisted of thirteen individuals with expertise and experience in health physics, epidemiology, dosimetry, computing, and industrial hygiene. A final report was delivered to CEDR Project Management during February 1992. The report contains a number of major recommendations concerning collection, interpretation, and documentation of dosimetry data to maximize their usefulness to researchers using CEDR for examining possible health effects of occupational exposure to ionizing radiation.

Fix, J J

1994-08-01T23:59:59.000Z

280

Natural radiation environment III. [Lead Abstract  

SciTech Connect (OSTI)

Separate abstracts were prepared for the 52 research papers presented at this symposium in April 1978. The major topics in this volume deal with penetrating radiation measurements, radiation surveys and population exposure, radioactivity in the indoor environment, and technologically enhanced natural radioactivity. (KRM)

Gesell, T.F.; Lowder, W.M. (eds.)

1980-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "radiation exposure managing" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


281

Magnetic field exposure among utility workers  

SciTech Connect (OSTI)

The Electric and Magnetic Field Measurement Project for Utilities -- the Electric Power Research Institute (EPRI) Electric and Magnetic Field Digital Exposure (EMDEX) Project (the EPRI EMDEX Project) -- was a multifaceted project that entailed technology transfer, measurement protocol design, data management, and exposure assessment analyses. This paper addresses one specific objective of the project: the collection, analysis, and documentation of power-frequency magnetic filed exposures for a diverse population of utility employees at 59 sites in four countries between September, 1988, and September, 1989. Specially designed sampling procedures and data collection protocols were used to ensure uniform implementation across sites. Volunteers within 13 job classifications recorded which of eight work or three nonwork environments they occupied while wearing an EMDEX meter. Approximately 50,000 hours of magnetic field exposure records taken at 10 s intervals were obtained, about 70% of which were from work environments. Exposures and time spent in environments were analyzed by primary work environment, by occupied environment, and by job classification.

Bracken, T.D.; Senior, R.S. [T. Dan Bracken, Inc., Portland, OR (United States); Rankin, R.F. [Applied Research Services, Inc., Lake Oswego, OR (United States); Alldredge, J.R. [Washington State Univ., Pullman, WA (United States); Sussman, S.S. [Electric Power Research Institute, Palo Alto, CA (United States)

1995-09-01T23:59:59.000Z

282

Environment/Health/Safety (EHS): Radiation Protection Group: Radiation  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Who To Call Who To Call Rad Training Dosimetry Telemetry Laser Safety Radiation Safety Committee Pub-3000 Ch. 21 Forms RPG Procedures RPG Internal Radiation Safety Committee Charter Purpose The Berkeley Lab Radiation Safety Committee (RSC) is appointed by, and reports to, the Laboratory Director and is responsible for advising LBNL Management on all matters related to occupational and environmental radiation safety. The Radiation Safety Committee reviews and recommends approval of radiation safety policies and guides the Environment, Health and Safety Division and radiation user divisions in carrying out these programs. The scope of its actions will generally be in issues of broad institutional concern and impact, or areas of potential high consequence either in terms of safety or institutional needs.

283

Low Dose Radiation Research Program: About  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

About About Background. Extensive research on the health effects of radiation using standard epidemiological and toxicological approaches has been done for decades to characterize responses of populations and individuals to high radiation doses, and to set exposure standards to protect both the public and the workforce. These standards were set using models that extrapolated from the cancers observed following exposure to high doses of radiation to predicted, but not measurable, changes in cancer frequency at low radiation doses. The use of models was necessary because of our inability to detect changes in cancer incidence following low doses of radiation. Historically, the predominant approach has been the Linear-no-Threshold model (see Wikipedia entry) and collective dose concept that assumes each unit of radiation, no

284

Guidelines for Exposure Assessment  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Z-92/001 Z-92/001 May 1992 Guidelines for Exposure Assessment Published on May 29, 1992, Federal Register 57(104):22888-22938 These guidelines replace the previously issued final Guidelines for Estimating Exposures (September 24, 1986), Federal Register 51(185):34042-34054, and the Proposed Guidelines for Exposure-Related Measurements (December 2, 1988), Federal Register 53(232):48830- 48853. Risk Assessment Forum U.S. Environmental Protection Agency Washington, DC DISCLAIMER This document has been reviewed in accordance with U.S. Environmental Protection Agency policy and approved for publication. Mention of trade names or commercial products does not constitute endorsement or recommendation for use. Note: This document represents the final guidelines. A number of editorial corrections have

285

Historical Exposures to Chemicals at the Rocky Flats Nuclear Weapons Plant: A Pilot Retrospective Exposure Assessment  

SciTech Connect (OSTI)

In a mortality study of white males who had worked at the Rocky Flats Nuclear Weapons Plant between 1952 and 1979, an increased number of deaths from benign and unspecified intracranial neoplasms was found. A case-control study nested within this cohort investigated the hypothesis that an association existed between brain tumor death and exposure to either internally deposited plutonium or external ionizing radiation. There was no statistically significant association found between estimated radiation exposure from internally deposited plutonium and the development of brain tumors. Exposure by job or work area showed no significant difference between the cohort and the control groups. An update of the study found elevated risk estimates for (1) all lymphopoietic neoplasms, and (2) all causes of death in employees with body burdens greater than or equal to two nanocuries of plutonium. There was an excess of brain tumors for the entire cohort. Similar cohort studies conducted on worker populations from other plutonium handling facilities have not yet shown any elevated risks for brain tumors. Historically, the Rocky Flats Nuclear Weapons Plant used large quantities of chemicals in their production operations. The use of solvents, particularly carbon tetrachloride, was unique to Rocky Flats. No investigation of the possible confounding effects of chemical exposures was done in the initial studies. The objectives of the present study are to (1) investigate the history of chemical use at the Rocky Flats facility; (2) locate and analyze chemical monitoring information in order to assess employee exposure to the chemicals that were used in the highest volume; and (3) determine the feasibility of establishing a chemical exposure assessment model that could be used in future epidemiology studies.

Janeen Denise Robertson

1999-02-01T23:59:59.000Z

286

7 - Estimation of Radiation Doses  

Science Journals Connector (OSTI)

Abstract Radiation doses to the Japanese population from inhalation of contaminated air, external irradiation, terrestrial and marine food contamination are estimated and compared with other sources of anthropogenic (global fallout, Chernobyl accident), natural (radionuclides in food, cosmic radiation) and medical applications (X-ray tests, CT-tests, etc.) of ionizing radiation. The estimated doses from inhalation, ingestion of terrestrial and marine food, and radiation exposure from radioactive clouds and deposited radionuclides were generally below the levels which could cause health damage of the Japanese population, as well as of the world population. The estimated total radiation doses to fish and shellfish in coastal waters during the largest radionuclide releases were by a factor of 10 lower than the baseline safe level postulated for the marine organisms, therefore no harmful effects are expected for the marine ecosystem as well.

Pavel P. Povinec; Katsumi Hirose; Michio Aoyama

2013-01-01T23:59:59.000Z

287

About Radiation  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Radiation Radiation What is radiation? Radiation is a form of energy that is a part of our everyday lives. All of us receive a "dose" of radiation each day. Most of the dose comes from naturally occurring radioactive materials such as uranium, thorium, radon, and certain forms of potassium and carbon. The air we breathe contains radon, the food we eat contains uranium and thorium from the soil, and our bodies contain radioactive forms of potassium and carbon. Cosmic radiation from the sun also contributes to our natural radiation dose. We also receive radiation doses from man-made sources such as X-rays, nuclear medical procedures, power plants, smoke detectors and older television sets. Some people, such as nuclear plant operators, flight crews, and nuclear medicine staff may also receive an occupational radiation dose.

288

Low Dose Radiation Research Program: Linking Molecular Events to Cellular  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Linking Molecular Events to Cellular Responses at Low Dose Exposures Linking Molecular Events to Cellular Responses at Low Dose Exposures Thomas Weber Pacific Northwest National Laboratory Why This Project It currently costs billions of dollars to protect workers and the public from exposure to man-made radiation, despite exposure levels lower than the natural background levels of radiation. If it could be demonstrated that there is no increased cancer risk associated with these low dose exposures, these resources could be directed toward more critical societal issues. Defining low dose radiation cancer risks is limited by our ability to measure and directly correlate relevant cellular and molecular responses occurring at the low radiation dose and dose rate with tumor formation. This deficiency has led to conservative risk assessments based on low dose

289

Low Dose Radiation Research Program: Genetic Factors Affecting  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Affecting Susceptibility to Low-Dose Radiation Affecting Susceptibility to Low-Dose Radiation William F. Morgan Pacific Northwest National Laboratory Why This Project The short-term effects of high doses of ionizing radiation on cellular responses are relatively well understood. Less clear are the long-term consequences of exposure to low dose/low dose-rate radiation and the effects of radiation exposure on the progeny of surviving cells. If a cell survives radiation, it is generally thought to have repaired all the radiation-induced insults and be capable of a "normal healthy life". At a certain frequency, however, we have found that some cells surviving radiation grow normally, but will rearrange their genetic material during time in culture. We call this radiation-induced genomic instability. Many

290

Low Dose Radiation Research Program: DOE / NASA Joint Funded Projects  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

DOE/NASA Joint Funded Projects DOE/NASA Joint Funded Projects NASA Source Photo Space explorers are subject to exposure to low dose ionizing radiation. Research that helps determine health risks from this exposure is funded by NASA and DOE. Source: NASA DOE's Low Dose Program and the National Aeronautics and Space Administration (NASA) jointly fund new research to develop a better scientific basis for understanding risks to humans from exposures to low doses or low fluences of ionizing radiation. Research must focus on elucidating molecular mechanisms and pathways involved in normal radiobiological responses to low dose exposure, and must have the potential to ultimately increase understanding of health outcomes from radiation exposures that are at or near current workplace exposure

291

Applications of Capstone Depleted Uranium Aerosol Risk Data to Military Combat Risk Management  

SciTech Connect (OSTI)

Risks to personnel engaged in military operations include not only the threat of enemy firepower but also risks from exposure to other hazards such as radiation. Combatant commanders of the U. S. Army carefully weigh risks of casualties before implementing battlefield actions using an established paradigm that take these risks into consideration. As a result of the inclusion of depleted uranium (DU) anti-armor ammunition in the conventional (non-nuclear) weapons arsenal, the potential for exposure to DU aerosols and its associated chemical and radiological effects becomes an element of the commanders’ risk assessment. The Capstone DU Aerosol Study measured the range of likely DU oxide aerosol concentrations created inside a combat vehicle perforated with a DU munition, and the Capstone Human Health Risk Assessment (HHRA) estimated the associated doses and calculated risks. This paper focuses on the development of a scientific approach to adapt the risks from DU’s non uniform dose distribution within the body using the current U.S. Department of Defense (DoD) radiation risk management approach. The approach developed equates the Radiation Exposure Status (RES) categories to the estimated radiological risks of DU and makes use of the Capstone-developed Renal Effects Group (REG) as a measure of chemical risk from DU intake. Recommendations are provided for modifying Army guidance and policy in order to better encompass the potential risks from DU aerosol inhalation during military operations.

Daxon, Eric G.; Parkhurst, MaryAnn; Melanson, Mark A.; Roszell, Laurie E.

2009-03-01T23:59:59.000Z

292

E-Print Network 3.0 - acute x-ray exposure Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

late effects of acute ionizing radiation exposures in atomic bomb survivors" initiated October 2009... X-ray Yes Yes No No Retesting required 2 X-ray Yes Yes No No Retesting...

293

Causal Analysis of the Unanticipated Extremity Exposure at HFEF  

SciTech Connect (OSTI)

This report covers the unintended extremity exposure to an operator while handling a metallurgical mount sample of irradiated fuel following an off-scale high beta radiation reading of the sample. The decision was made to continue working after the meter indicated high off-scale by the HPT Supervisor, which resulted in the operator at the next operation being exposed.

David E. James; Charles R. Posegate; Thomas P. Zahn; Alan G. Wagner

2011-11-01T23:59:59.000Z

294

Danger radiations  

ScienceCinema (OSTI)

Le conférencier Mons.Hofert parle des dangers et risques des radiations, le contrôle des zones et les précautions à prendre ( p.ex. film badge), comment mesurer les radiations etc.

None

2011-04-25T23:59:59.000Z

295

Hospitality Management Hospitality Management  

E-Print Network [OSTI]

of the global hospitality industry. Academic Offerings HOSPITALITY AND FOOD SERVICE MANAGEMENT MINOR HOSPITALITY AND FOOD SERVICE MANAGEMENT MINOR Students pursuing programs in other areas of study may choose a minor Lodging Management 3 HPM 309 Sports Arena Management 3 HPM 312* Cost Control in Food Services (Prereq

McConnell, Terry

296

Estimation of the Radiation Dose to the Public Due to Atmospheric Emissions from the Rostov NPP  

Science Journals Connector (OSTI)

The radiation dose to the public due to atmospheric emissions from the Rostov NPP is calculated using a point conservative approach and a complex of migration and dosimetric models. The radiation exposure path...

L. A. Sharpan; E. I. Karpenko; S. I. Spiridonov

2014-01-01T23:59:59.000Z

297

Solar radiation and human health  

Science Journals Connector (OSTI)

The Sun has played a major role in the development of life on Earth. In Western culture, people are warned against Sun exposure because of its adverse effects: erythema, photoimmunosuppression, photoageing, photocarcinogenesis, cataracts and photokeratitis. However, Sun exposure is also beneficial, since moderate doses give beneficial physiological effects: vitamin D synthesis, reduction of blood pressure and mental health. Shortage of Sun exposure may be even more dangerous to human health than excessive exposure. Avoiding Sun exposure leads to vitamin D deficiency which is associated not only with rickets and osteomalacia, but also with increased risk of cardiovascular disease, multiple sclerosis, rheumatoid arthritis, diabetes, influenza, many types of cancer and adverse pregnancy outcomes. Solar radiation induces nitric oxide release in tissue and immediate pigment darkening which certainly play important roles, although these are still unknown. Action spectra relevant for health are described. We will also review what is known about spectral and intensity variations of terrestrial solar radiation as well as its penetration through the atmosphere and into human skin and tissue.

Asta Juzeniene; Pål Brekke; Arne Dahlback; Stefan Andersson-Engels; Jörg Reichrath; Kristin Moan; Michael F Holick; William B Grant; Johan Moan

2011-01-01T23:59:59.000Z

298

From Mice and Men to Earth and Space: Joint NASA–NCI Workshop on Lung Cancer Risk Resulting from Space and Terrestrial Radiation  

Science Journals Connector (OSTI)

...data were limited, a radiation effect was still not...the atomic bombs in Japan (1) and among British...multiple fractionated radiation exposures to the lung...5-88). Hiroshima. Japan: Radiation Effects Re search Foundation...

Jerry W. Shay; Francis A. Cucinotta; Frank M. Sulzman; C. Norman Coleman; and John D. Minna

2011-11-15T23:59:59.000Z

299

Quantitative evaluation of light scattering intensities of the crystalline lens for radiation related minimal change in interventional radiologists: a cross-sectional pilot study  

Science Journals Connector (OSTI)

......Medical Physics and Radiation Safety, Boston University...evaluate low-dose X-ray radiation effects on the eye by...hours and scattered radiation exposure during working...performed using commercial software (JMP 7.01J). Statistical......

Toshi Abe; Shigeru Furui; Hiroshi Sasaki; Yasuo Sakamoto; Shigeru Suzuki; Tatsuya Ishitake; Kinuyo Terasaki; Hiroshi Kohtake; Alexander M. Norbash; Richard H. Behrman; Naofumi Hayabuchi

2013-03-01T23:59:59.000Z

300

UNDERSTANDING THE GENETIC CONSEQUENCES OF ENVIRONMENTAL TOXICANT EXPOSURE: CHERNOBYL AS A MODEL SYSTEM  

E-Print Network [OSTI]

UNDERSTANDING THE GENETIC CONSEQUENCES OF ENVIRONMENTAL TOXICANT EXPOSURE: CHERNOBYL AS A MODEL to Chernobyl radiation. Our results suggest that genetic diversity in radioactive regions of Ukraine to elucidate the effects of toxicant exposure. Keywords--Chernobyl Bank vole Population genetics Comparative

Baker, Robert J.

Note: This page contains sample records for the topic "radiation exposure managing" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


301

Radiation Emergency Procedure Demonstrations  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Managing Radiation Emergencies Managing Radiation Emergencies Procedure Demonstrations Procedure Demonstrations Note: RealPlayer is needed for listening to the narration that accompany these demonstrations. Real Player Dressing To Prevent the Spread of Radioactive Contamination This demonstration shows how your team can dress to prevent the spread of radioactive contamination. Click to begin presentation on dressing to prevent the spread of radioactive contamination. Preparing The Area This demonstration shows basic steps you can take to gather equipment and prepare a room to receive a patient who may be contaminated with radioactive material. Click to begin presentation on preparing a room to receive a radioactive contaminated patient. Removing Contaminated Clothing This demonstration shows the procedure for removing clothing from a patient who may be contaminated with radioactive material.

302

Fate and Exposure Modeling of Environmental Contaminants  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Fate and Exposure Modeling of Environmental Contaminants Fate and Exposure Modeling of Environmental Contaminants Speaker(s): Mathew MacLeod Date: June 29, 2004 - 12:00pm Location: Bldg. 90 Seminar Host/Point of Contact: Thomas McKone Chemical products pervade modern society, and furnish unprecedented wealth and comfort to citizens of countries with industrialized economies. Demand for products such as pesticides, industrial chemicals, flame-retardants and additives for consumer products requires large scale production and distribution of these chemicals, and they are inevitably released into the environment. Responsible management of chemicals therefore requires a quantitative understanding of amounts released, how the chemicals partition and travel in the environment, and how they might expose and thus adversely affect human and ecological populations. This

303

Cross hedging jet-fuel price exposure  

Science Journals Connector (OSTI)

This paper investigates the cross hedging performance of several oil forwards contracts using WTI, Brent, gasoil and heating oil to manage jet-fuel spot price exposure. We apply three econometric techniques that have been widely tested and applied in the cross hedging literature on foreign exchange and stock index futures markets. Using quotes from the financial industry on forward contracts, we can show that the optimal cross hedging instrument depends on the maturity of the instrument's forwards contract. The results highlight that the standard approach in the literature to use crude oil as a cross hedge is not optimal for time horizons of three months or less. By contrast, for short hedging horizons our results indicate that gasoil forwards contracts represent the highest cross hedging efficiency for jet-fuel spot price exposure, while for maturities of more than three months, the predominance of gasoil diminishes in comparison to WTI and Brent.

Zeno Adams; Mathias Gerner

2012-01-01T23:59:59.000Z

304

RADIATION EFFECTS IN MATERIAL MICROSTRUCTURE.  

SciTech Connect (OSTI)

Next generation nuclear power systems, high-power particle accelerators and space technology will inevitably rely on higher performance materials that will be able to function in the extreme environments of high irradiation, high temperatures, corrosion and stress. The ability of any material to maintain its functionality under exposure to harsh conditions is directly linked to the material structure at the nano- and micro-scales. Understanding of the underlying processes is key to the success of such undertakings. This paper presents experimental results of the effects of radiation exposure on several unique alloys, composites and crystals through induced changes in the physio-mechanical macroscopic properties.

SIMOS,N.

2007-05-30T23:59:59.000Z

305

Low Dose Radiation Research Program: Low Dose Radiation Effects in  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Radiation Effects in Differentiating Human Lens Cells Radiation Effects in Differentiating Human Lens Cells E.A. Blakely1, M.P. McNamara1, P.Y. Chang1, K.A. Bjornstad1, D. Sudar1, and A.C. Thompson2 1Life Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California; 2Advanced Light Source Division, Lawrence Berkeley National Laboratory, Berkeley, California. Introduction The human lens is one of the most radiosensitive organs of the body. Cataract, the opacification of the lens, is a late-appearing response to radiation damage. There are few data available on the late radiation effects of exposure in space flight to charged particle beams, the most prevalent of which are protons. Basic research in this area is needed to integrate the responses of both critical and other representative tissues

306

Low Dose Radiation Research Program: DOE Lowdose Radiation Program Workshop  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Using a Low LET Electron Microbeam to Investigate Non-Targeted Using a Low LET Electron Microbeam to Investigate Non-Targeted Effects of Low Dose Radiation. Authors: William F. Morgan1 and Marianne B. Sowa2 Institutions: 1Radiation Oncology Research Laboratory, University of Maryland, Baltimore MD 21201 2 Chemical Structure and Dynamics, Pacific Northwest National Laboratory, Richland WA 99352 We have recently installed a low LET electron microbeam that generates energetic electrons to mimic radiation damage from gamma and x-ray sources. It has been designed such that high-energy electrons deposit energy in a pre-selected subset of cells leaving neighboring cells unirradiated (Figure 1). In this way it is possible to examine non-targeted effects associated with low dose radiation exposure including induced genomic instability and

307

Radiation Leukaemongenesis at Low Doses  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Leukaemongenesis at Low Doses Leukaemongenesis at Low Doses Simon Bouffler Health Protection Agency Abstract Myeloid leukaemias feature prominently among the cancers associated with human exposures to ionising radiation. The CBA mouse model of radiation-induced acute myeloid leukaemia (AML) has been used extensively for both quantitative and mechanistic studies. Loss of genetic material from chromosome 2 (chr2) is known to be associated with most radiation-induced AMLs. AML develops in CBA mice exposed to X- or γ-radiation, after a mean latency period of 18 months, with a maximal incidence of approximately 25% at 3Gy. A strong candidate AML-suppressor gene located within the commonly deleted region of chr2 has been identified, Sƒpil/PU.1. This gene suffers hemizygous loss and specific

308

Low Dose Radiation Program: Links - Online Literature  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Online Literature Online Literature Journals, Books and other Publications Armed Forces Radiobiology Research Institute Chornobyl Center for Nuclear Safety Radioactive Waste and Radioecology "Insight" Magazine Central Research Institute of the Electric Power Industry (CRIEPI) News: Aiming at an information center on low dose radiation research Health Physics International Journal of Radiation Biology Iranian Journal of Radiation Research Journal of Radiological Protection National Council on Radiation Protection and Measurements Radiation Research U.S. Department of Energy (DOE) Information Bridge Reports Animal Cancer Tests and Human Cancer Risk Assessment: A Broad Perspective Effects of Ionizing Radiation: Atomic Bomb Survivors and Their Children (1945-1995) Health Effects of Exposure to Low Levels of Ionizing Radiation: BEIR

309

Radiation Protection of the Public and the Environment  

Broader source: Energy.gov [DOE]

Radiation Protection of the Public and the Environment. The Atomic Energy Act of 1954, as amended, authorizes DOE to protect the health and safety of the public against radiation. It is the Department's objective to operate its facilities and conduct activities so that radiation exposures to members of the public and the environment are maintained as low as is reasonably achievable (ALARA), within limits established in DOE O 458.1, Radiation Protection of the Public and the Environment.

310

RADIATION RESEARCH 162, 257263 (2004) 0033-7587/04 $15.00  

E-Print Network [OSTI]

and could possibly be used as a biodosimeter to estimate both the dose and type of radiation exposure. The existence of a stable biomarker in the genome that is dose-dependent and radiation quality-specific would257 RADIATION RESEARCH 162, 257­263 (2004) 0033-7587/04 $15.00 2004 by Radiation Research Society

311

Experiment generates THz radiation 20,000 times brighter than...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Gwyn Williams Gwyn Williams, JLab's FEL Basic Research Program manager, led a multi-lab experiment that generated nearly 20 watts of terahertz radiation - a world record....

312

1993 Radiation Protection Workshop: Proceedings  

SciTech Connect (OSTI)

The 1993 DOE Radiation Protection Workshop was conducted from April 13 through 15, 1993 in Las Vegas, Nevada. Over 400 Department of Energy Headquarters and Field personnel and contractors from the DOE radiological protection community attended the Workshop. Forty-nine papers were presented in eleven separate sessions: Radiological Control Manual Implementation, New Approaches to Instrumentation and Calibration, Radiological Training Programs and Initiatives, External Dosimetry, Internal Dosimetry, Radiation Exposure Reporting and Recordkeeping, Air Sampling and Monitoring Issues, Decontamination and Decommissioning of Sites, Contamination Monitoring and Control, ALARA/Radiological Engineering, and Current and Future Health Physics Research. Individual papers are indexed separately on the database.

Not Available

1993-12-31T23:59:59.000Z

313

Revised analyses of decommissioning for the reference boiling water reactor power station. Effects of current regulatory and other considerations on the financial assurance requirements of the decommissioning rule and on estimates of occupational radiation exposure: Main report, draft report for comment. Volume 1  

SciTech Connect (OSTI)

On June 27, 1988, the U.S. Nuclear Regulatory Commission (NRC) published in the Federal Register (53 FR 24018) the final rule for the General Requirements for Decommissioning Nuclear Facilities. With the issuance of the final rule, owners and operators of licensed nuclear power plants are required to prepare, and submit to the NRC for review, decommissioning plans and cost estimates. The NRC staff is in need of updated bases documentation that will assist them in assessing the adequacy of the licensee submittals, from the viewpoint of both the planned actions, including occupational radiation exposure, and the probable costs. The purpose of this reevaluation study is to update the needed bases documentation. This report presents the results of a review and reevaluation of the PNL 1980 decommissioning study of the Washington Public Power Supply System`s Washington Nuclear Plant Two (WNP-2), including all identifiable factors and cost assumptions which contribute significantly to the total cost of decommissioning the plant for the DECON, SAFSTOR, and ENTOMB alternatives, which now include an initial 5-7 year period during which time the spent fuel is stored in the spent fuel pool prior to beginning major disassembly or extended safe storage of the plant. This report also includes consideration of the NRC requirement that decontamination and decommissioning activities leading to termination of the nuclear license be completed within 60 years of final reactor shutdown, consideration of packaging and disposal requirements for materials whose radionuclide concentrations exceed the limits for Class C low-level waste. Costs for labor, transport, and disposal activities are given in 1993 dollars. Sensitivities of the total license termination cost to the disposal costs at different low-level radioactive waste disposal sites, to different depths of contaminated concrete surface removal within the facilities, and to different transport distances are also examined.

Smith, R.I.; Bierschbach, M.C.; Konzek, G.J. [Pacific Northwest Lab., Richland, WA (United States)] [and others

1994-09-01T23:59:59.000Z

314

Plasma Radiation  

Science Journals Connector (OSTI)

... JUST over ten years ago the first book on plasma physics as a subject in its own right appeared; in a gradually swelling stream ... been surprisingly few monographs. One topic which has had scant coverage in any form is plasma radiation (except for spectral-line radiation which has been dealt with very fully in ...

T. J. M. BOYD

1967-07-01T23:59:59.000Z

315

X-ray radiation effects in multilayer epitaxial graphene Jeremy Hicks1  

E-Print Network [OSTI]

1 X-ray radiation effects in multilayer epitaxial graphene Jeremy Hicks1 , Rajan Arora2 , Eleazar and after exposure to a total ionizing dose (TID) of 12 Mrad(SiO2) using a 10 keV X-ray source. While we are mostly unaffected by radiation exposure. Combined with X-ray photoelectron spectroscopy (XPS) data

316

Low Dose Radiation Research Program: Research Program Workshop I Abstracts  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Genetic Factors Affecting Susceptibility to Low-Dose Radiation Genetic Factors Affecting Susceptibility to Low-Dose Radiation William F. Morgan and John H.J. Petrini Radiation Oncology Research Laboratory, University of Maryland at Baltimore, Baltimore, MD Summary: The goal of our application is to improve the scientific basis for understanding potential risks to the population from low dose radiation exposure based on potential genetic differences that may modulate an individual's sensitivity to low doses of radiation. Abstract: The goal of this application is to improve the scientific basis for understanding potential risks to the population from low dose radiation exposure. We propose to address specific genetic factors that affect individual susceptibility to low dose radiation and ask the question do genetic differences exist that make some individuals more sensitive to

317

Radiation exposure assessment for portsmouth naval shipyard health studies  

Science Journals Connector (OSTI)

......shipyards 226 0.49 Training 177 0.79 Industry...working near an operating submarine reactor...number of affected personnel and the low doses...worker safety and training programmes. Figure...individuals eligible for selection to nested case-control...P. Study of a selection of 10 historical......

R. D. Daniels; T. D. Taulbee; P. Chen

2004-09-01T23:59:59.000Z

318

Exposure to galactic cosmic radiation and solar energetic particles  

Science Journals Connector (OSTI)

......various destinations near solar maximum condition (1991...WEATHER EFFECTS Transient solar effects produced by sudden releases of energy in solar flares and CMEs can be observed...predictable, the recent DOSMAX project set out to have active detectors......

D. O'Sullivan

2007-07-01T23:59:59.000Z

319

Radiation Exposure Information Reporting System (REIRS) Update, 2012  

SciTech Connect (OSTI)

A series of graphs gives data through the year 2012 for annual collective doses, collective dose per reactor, number of individuals with measurable doses both in total and per reactor, number of reactors, electricity generated, measurable doses per individual and per megawatt-year, and collective outage hours. Reactors considered include BWR, PWR, and LWR. Also, the total effective dose equivalent for the period 2010-2012 is tabulated for each nuclear power plant considered, and the change over 2009-2011.

none,

2013-01-01T23:59:59.000Z

320

DOE 2012 Occupational Radiation Exposure Report ALARA Activities...  

Office of Environmental Management (EM)

near Crescent Junction, Utah. The scope also includes active remediation of ground water at the mill site (Moab site). The Uranium Reduction Company constructed the Moab...

Note: This page contains sample records for the topic "radiation exposure managing" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


321

Is neutron radiation exposure always detrimental to metals (steels)?  

Science Journals Connector (OSTI)

... E. O. in Irradiation Effects on the Microstructure and Properties of Metals 53–71 (ASTM STP 611, Philadelphia, 1976).

K. Linga Murty

1984-03-01T23:59:59.000Z

322

Radiation exposure assessment for portsmouth naval shipyard health studies  

Science Journals Connector (OSTI)

......Site, Oak Ridge National Laboratory (ORNL) and the Rocky Flats Nuclear Weapons plant; UK employees at the Atomic Energy...United States United Kingdom Canada PNS Hanford site Rocky Flats ORNL Sellafield AEA and AWE AECL Monitored workers 13......

R. D. Daniels; T. D. Taulbee; P. Chen

2004-09-01T23:59:59.000Z

323

Radiation exposure assessment for portsmouth naval shipyard health studies  

Science Journals Connector (OSTI)

......National Laboratory (ORNL) and the Rocky Flats Nuclear Weapons plant; UK employees...Kingdom Canada PNS Hanford site Rocky Flats ORNL Sellafield AEA and AWE AECL...more stringent institutional worker safety and training programmes. Figure......

R. D. Daniels; T. D. Taulbee; P. Chen

2004-09-01T23:59:59.000Z

324

Non-monotonous refractive index changes recorded in a phosphate glass optical fibre using 248nm, 500fs laser radiation  

Science Journals Connector (OSTI)

Results are presented on the photosensitivity behavior of a phosphate glass optical fibre using 248nm, 500fs laser radiation. Bragg grating exposures performed using a double phase...

Sozzi, Michele; Rahman, Aashia; Pissadakis, Stavros

2011-01-01T23:59:59.000Z

325

Superfund Exposure Assessment Manual  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

1-881001 1-881001 OSWER Directive 9285.5-1 April 1988 Superfund Exposure Assessment Manual U.S. Environmental Protection Agency Office of Remedial Response Washington, DC 20460 Notice This report was prepared under contract to an agency of the United States Government. Neither the United States Government nor any of its employees, contractors, subcontractors, or their employees makes any warranty, expressed or implied, or assumes any legal liability or responsibility for any third party' s use of or the results of such use of any information, apparatus, product, or process disclosed in this report, or represents that its use by such third party would not infringe on privately owned rights. ii Table of Contents Chapter Page List of Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

326

Radiation effects on polypropylene/polybutylene blends  

SciTech Connect (OSTI)

Polymer blends of polypropylene and polybutylene have been found to exhibit substantial maintenance of structural integrity after exposure to ionizing radiation. This radiation resistance has been found to be related to processing conditions and the resulting morphology of the blend. This article discusses (a) the processing conditions and the resulting mechanical properties after irradiation and (b) the role of morphology in this unexpected blend property.

Rolando, R.J. (3M Engineering Systems and Technology, St. Paul, MN (United States))

1993-06-01T23:59:59.000Z

327

United States Office of EPA-520/1-88-020 Environmental Protection Radiation Program September 1988  

E-Print Network [OSTI]

and Dose Conversion Factors For Inhalation, Submersion, And Ingestion Federal Guidance Report No.11 #12 and Exposure-to-Dose Conversion Factors for General Application, Based on the 1987 Federal Radiation Protection) and Derived Air Concentrations (DAC) for Occupational Exposure 31 2.1 Exposure-to-Dose Conversion Factors

328

Boraflex rack management  

SciTech Connect (OSTI)

Boraflex degradation events have been reported at Palisades, Fort Calhoun, and South Texas. Analysis of these events and research by the Electric Power Research Institute (EPRI) indicates that degradation is related to radiation dose and water ingress. Utilities with Boraflex are now trying to determine strategies to deal with the issue. From a safety standpoint, the issue is less significant for pressurized water reactors because large amounts of soluble boron are present in the pool. While little can be done to change water ingress, utilities can manage the radiation dose to the Boraflex through Boraflex {open_quotes}rack management.{close_quotes} In practice, this amounts to optimizing Boraflex cell usage to extend the useful life of the spent-fuel pool rack. Effective Boraflex cell optimization typically involves analysis of spent-fuel pool design, historical usage data, and radiation dose assessment. Analysis of the Diablo Canyon power plant (DCPP) spent-fuel pool rack is discussed in this paper.

Jones, N. [Pacific Gas & Electric Co., San Francisco, CA (United States)

1996-12-31T23:59:59.000Z

329

The Feasibility of Establishing a De Minimis Level of Radiation Dose and a Regulatory Cutoff Policy for Nuclear Regulation  

Science Journals Connector (OSTI)

This report discusses the feasibility of a de minimis policy for radiation exposure guidance and regulation. This policy would establish a threshold below which regulation of radiation sources, practices, or e...

Joyce P. Davis

1987-01-01T23:59:59.000Z

330

Radiation dosimeter  

DOE Patents [OSTI]

A radiation detector readout circuit is provided which produces a radiation dose-rate readout from a detector even though the detector output may be highly energy dependent. A linear charge amplifier including an output charge pump circuit amplifies the charge signal pulses from the detector and pumps the charge into a charge storage capacitor. The discharge rate of the capacitor through a resistor is controlled to provide a time-dependent voltage which when integrated provides an output proportional to the dose-rate of radiation detected by the detector. This output may be converted to digital form for readout on a digital display.

Fox, Richard J. (Oak Ridge, TN)

1983-01-01T23:59:59.000Z

331

Radiation dosimeter  

DOE Patents [OSTI]

A radiation detector readout circuit is provided which produces a radiation dose-rate readout from a detector even through the detector output may be highly energy dependent. A linear charge amplifier including an output charge pump circuit amplifies the charge signal pulses from the detector and pumps the charge into a charge storage capacitor. The discharge rate of the capacitor through a resistor is controlled to provide a time-dependent voltage which when integrated provides an output proportional to the dose-rate of radiation detected by the detector. This output may be converted to digital form for readout on a digital display.

Fox, R.J.

1981-09-01T23:59:59.000Z

332

A programmable exposure control system for determination of the effects of pollutant exposure regimes on plant growth  

Science Journals Connector (OSTI)

A field-exposure research facility was constructed to provide a controlled environment to determine the influence of the various components of ozone exposure (concentration, frequency and duration) on plant response. The facility uses modified open-top chambers and an automated control system for continuous delivery and control of single or multiple pollutants over a growing season. Numerous exposure profiles (e.g. various episodic regimes, daily peak profiles with sinusoidal-type or square-wave type peaks) can be produced and controlled in all chambers. Ozone is produced by commercially available generators; their outputs are controlled by an HP 41CV hand-held computer through a Hewlett-Packard Interface Loop System (HP-IL). Chamber microenvironmental data and ozone concentration data are collected continuously with a data acquisition system that includes mean hourly ozone concentration, air and soil temperature, relative humidity and solar radiation. The hourly ozone concentration in each chamber ranged from 2 to 12% of the requested concentration over a 174-day season. Initial studies with this facility compared the response of alfalfa and tall fescue growth to episodic and daily peak exposure profiles with equivalent integrated exposure indices over the growing season. Over the period of three cuttings (133 days) alfalfa growth was reduced more when exposed to the episodic profile than with the exposure regime of daily ozone peaks. Tall fescue growth was reduced only slightly over a period of three cuttings (90 days) when exposed to either regime.

W.E. Hogsett; David T. Tingey; S.R. Holman

1985-01-01T23:59:59.000Z

333

Can UV Exposure Reduce Mortality?  

Science Journals Connector (OSTI)

...with cancer mortality, such as solar elastosis and serum vitamin...studies conducted on the role of solar UV exposure and melanoma etiology...27); increased DNA repair capacity (e.g, 28); as well as...Boscoe FP , Schymura MJ.Solar ultraviolet-B exposure and...

Marianne Berwick

2011-04-01T23:59:59.000Z

334

Notes: Role of the Nfo and ExoA Apurinic/Apyrimidinic Endonucleases in Radiation Resistance and Radiation-Induced Mutagenesis of Bacillus subtilis Spores  

Science Journals Connector (OSTI)

...Aerospace Medicine, Radiation Biology Department...Group, Chiba-shi, Japan 5 University of Florida...to different types of radiation have been studied...of spore samples for radiation exposure has been described...NIRS) in Chiba, Japan, under the aegis of...

Ralf Moeller; Peter Setlow; Mario Pedraza-Reyes; Ryuichi Okayasu; Günther Reitz; Wayne L. Nicholson

2011-03-25T23:59:59.000Z

335

Properties of Natural Radiation and Radioactivity  

SciTech Connect (OSTI)

Ubiquitous natural sources of radiation and radioactive material (naturally occurring radioactive material, NORM) have exposed humans throughout history. To these natural sources have been added technologically-enhanced naturally occurring radioactive material (TENORM) sources and human-made (anthropogenic) sources. This chapter describes the ubiquitous radiation sources that we call background, including primordial radionuclides such as 40K, 87Rb, the 232Th series, the 238U series, and the 235U series; cosmogenic radionuclides such as 3H and 14C; anthropogenic radionuclides such as 3H, 14C, 137Cs, 90Sr, and 129I; radiation from space; and radiation from technologically-enhanced concentrations of natural radionuclides, particularly the short-lived decay products of 222Rn ("radon") and 220Rn ("thoron") in indoor air. These sources produce radiation doses to people principally via external irradiation or internal irradiation following intakes by inhalation or ingestion. The effective doses from each are given, with a total of 3.11 mSv y-1 (311 mrem y-1) to the average US resident. Over 2.5 million US residents receive over 20 mSv y-1 (2 rem y-1), primarily due to indoor radon. Exposure to radiation from NORM and TENORM produces the largest fraction of ubiquitous background exposure to US residents, on the order of 2.78 mSv (278 mrem) or about 89%. This is roughly 45% of the average annual effective dose to a US resident of 6.2 mSv y-1 (620 mrem y-1) that includes medical (48%), consumer products and air travel (2%), and occupational and industrial (0.1%). Much of this chapter is based on National Council on Radiation Protection and Measurements (NCRP) Report No. 160, "Ionizing Radiation Exposure of the Population of the United States," for which the author chaired the subcommittee that wrote Chapter 3 on "Ubiquitous Background Radiation."

Strom, Daniel J.

2009-07-13T23:59:59.000Z

336

Appendix G. Radiation Appendix G. Radiation  

E-Print Network [OSTI]

-made sources. People are exposed to naturally occurring radiation constantly. For example, cosmic radiation of radiation and its effects on the environment and biological systems. Radiation comes from natural and humanAppendix G. Radiation #12;#12;Appendix G. Radiation This appendix presents basic facts about

Pennycook, Steve

337

CRAD, Occupational Radiation Protection Program - December 4, 2012 |  

Broader source: Energy.gov (indexed) [DOE]

Occupational Radiation Protection Program - December 4, 2012 Occupational Radiation Protection Program - December 4, 2012 CRAD, Occupational Radiation Protection Program - December 4, 2012 December 4, 2012 Occupational Radiation Protection Program Inspection Criteria, Approach, and Lines of Inquiry (HSS CRAD 45-35, Rev. 1) This document provides an overview of the Criteria, Activities, and Lines of Inquiry that will be used to collect information to evaluate occupational radiation protection programs against DOE policy, standards, and regulatory requirements. The approach includes evaluation of essential programmatic elements of radiation protection programs with additional emphasis on implementation of the core functions of integrated safety management. CRAD, Occupational Radiation Protection Program - December 4, 2012

338

Toxicity of Pasteurella tularensis Killed by Ionizing Radiation  

Science Journals Connector (OSTI)

...to 106 r of y-radiation. When injected...suspension. Lethal doses of newly prepared...by exposure to ionizing radia- tion induced...to 106 r of y-radiation from a 60Co source at a dose rate of approximately...only in a limited range of dilutions...

Marshall E. Landay; George G. Wright; James D. Pulliam; Milton J. Finegold

1968-09-01T23:59:59.000Z

339

Radiation Emergency Assistance Center / Training Site | National Nuclear  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Radiation Emergency Assistance Center / Training Site | National Nuclear Radiation Emergency Assistance Center / Training Site | National Nuclear Security Administration Our Mission Managing the Stockpile Preventing Proliferation Powering the Nuclear Navy Emergency Response Recapitalizing Our Infrastructure Continuing Management Reform Countering Nuclear Terrorism About Us Our Programs Our History Who We Are Our Leadership Our Locations Budget Our Operations Media Room Congressional Testimony Fact Sheets Newsletters Press Releases Speeches Events Social Media Video Gallery Photo Gallery NNSA Archive Federal Employment Apply for Our Jobs Our Jobs Working at NNSA Blog Radiation Emergency Assistance Center / Training Site Home > About Us > Our Programs > Emergency Response > Responding to Emergencies > Consequence Management > Radiation Emergency Assistance

340

Order Module--NNSA OCCUPATIONAL RADIATION PROTECTION | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Order Module--NNSA OCCUPATIONAL RADIATION PROTECTION Order Module--NNSA OCCUPATIONAL RADIATION PROTECTION Order Module--NNSA OCCUPATIONAL RADIATION PROTECTION The familiar level of this module is designed to provide the basic information to meet the requirements that are related to 10 CFR 835, "Occupational Radiation Protection," in the following DOE Functional Area Qualification Standards: DOE-STD-1177-2004, Emergency Management DOE-STD-1151-2002, Facility Representative DOE-STD-1146-2007, General Technical Base DOE-STD-1138-2007, Industrial Hygiene DOE-STD-1183-2007, Nuclear Safety Specialist DOE-STD-1174-2003, Radiation Protection DOE-STD-1175-2006, Senior Technical Safety Manager DOE-STD-1178-2004, Technical Program Manager DOE-STD-1155-2002, Transportation and Traffic Management DOE Order Self Study Modules - 10 CFR 835 Occupational Radiation Protection

Note: This page contains sample records for the topic "radiation exposure managing" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


341

Impact of Radiation Biology on Fundamental Insights in Biology  

DOE R&D Accomplishments [OSTI]

Research supported by OHER [Office of Health and Environmental Research] and its predecessors has as one of its major goals an understanding of the effects of radiation at low doses and dose rates on biological systems, so as to predict their effects on humans. It is not possible to measure such effects directly. They must be predicted from basic knowledge on how radiation affects cellular components such as DNA and membranes and how cells react to such changes. What is the probability of radiation producing human mutations and what are the probabilities of radiation producing cancer? The end results of such studies are radiation exposure standards for workers and for the general population. An extension of these goals is setting standards for exposure to chemicals involved in various energy technologies. This latter problem is much more difficult because chemical dosimetry is a primitive state compared to radiation dosimetry.

Setlow, Richard B.

1982-07-27T23:59:59.000Z

342

The Parathyroid as a Target for Radiation Damage  

Science Journals Connector (OSTI)

...Fukushima, Japan, resulted in a massive release of strontium-90. The long latency period between the time of radiation exposure and the time at which its effects on the endocrine system can be detected suggests that long-term follow-up should be performed in areas exposed to nuclear radiation and that... To the Editor: Exposure to radiation may result in late adverse effects. Here we describe the consequences of irradiation for the endocrine system, particularly the parathyroid glands, in a cohort of 61 “liquidators,” or cleanup workers, who participated ...

2011-08-18T23:59:59.000Z

343

Radiation Safety Policy and Procedures Committee  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

RSPPC Meeting Minutes APS only RSPPC Meeting Minutes APS only Radiation Safety Policy and Procedures Committee Charter 1. Purpose The committee reviews functional changes to the Access Control Interlock System (ACIS) and Personnel Protection System (PSS) used to provide personnel protection and area exclusion related to APS accelerators, storage ring and other radiation handling areas. The RSPP Committee advises APS management on radiation safety matters. At the request of APS Management the committee reviews projects, recommends radiation safety policy, and evaluates accident investigation conclusions. 2. Membership Members are appointed by the APS Division Directors and APS Director for their knowledge and background in Interlock Systems, Radiation Safety, Accelerator Operations and Work on the Experiment Floor.

344

Radiation receiver  

DOE Patents [OSTI]

The apparatus for collecting radiant energy and converting same to alternate energy form includes a housing having an interior space and a radiation transparent window allowing, for example, solar radiation to be received in the interior space of the housing. Means are provided for passing a stream of fluid past said window and for injecting radiation absorbent particles in said fluid stream. The particles absorb the radiation and because of their very large surface area, quickly release the heat to the surrounding fluid stream. The fluid stream particle mixture is heated until the particles vaporize. The fluid stream is then allowed to expand in, for example, a gas turbine to produce mechanical energy. In an aspect of the present invention properly sized particles need not be vaporized prior to the entrance of the fluid stream into the turbine, as the particles will not damage the turbine blades. In yet another aspect of the invention, conventional fuel injectors are provided to inject fuel into the fluid stream to maintain the proper temperature and pressure of the fluid stream should the source of radiant energy be interrupted. In yet another aspect of the invention, an apparatus is provided which includes means for providing a hot fluid stream having hot particles disbursed therein which can radiate energy, means for providing a cooler fluid stream having cooler particles disbursed therein, which particles can absorb radiant energy and means for passing the hot fluid stream adjacent the cooler fluid stream to warm the cooler fluid and cooler particles by the radiation from the hot fluid and hot particles. 5 figs.

Hunt, A.J.

1983-09-13T23:59:59.000Z

345

MAPPING CLIMATE CHANGE EXPOSURES, VULNERABILITIES,  

E-Print Network [OSTI]

MAPPING CLIMATE CHANGE EXPOSURES, VULNERABILITIES, AND ADAPTATION TO PUBLIC HEALTH RISKS's California Climate Change Center JULY 2012 CEC5002012041 Prepared for: California Energy Commission of California. #12; ii ABSTRACT This study reviewed first available frameworks for climate change adaptation

346

Can UV Exposure Reduce Mortality?  

Science Journals Connector (OSTI)

...Cancer Center, Albuquerque, New Mexico 87131-0001. Phone: 505-272-4369...Affiliation: University of New Mexico Cancer Center, Albuquerque, New Mexico A Swedish cohort analysis in...recommendations are based on minimal solar exposure (i.e., almost...

Marianne Berwick

2011-04-01T23:59:59.000Z

347

Laboratory Specific Training Form (APPENDIX L) Checklist for Worker Training in Radiation Laboratories  

E-Print Network [OSTI]

, and contamination survey requirements to minimize radiation exposure. 7. Security requirements for radioactive Laboratories This form needs to be filled by every radiation worker who may work with radioactive material have been instructed as to the type and location of all the radioactive materials and/or radiation

Berdichevsky, Victor

348

Interspecific Variability in Sensitivity to UV Radiation and Subsequent Recovery in Selected Isolates of Marine Bacteria  

Science Journals Connector (OSTI)

...exposure period to different radiation regimens was chosen since preliminary...plus photosynthetic active radiation (PAR; 400 to 700 nm; this...foil CI Kasei Co., Tokyo, Japan; 50 transmittance at 405 nm...meant to simulate the lower radiation levels in deeper layers of...

Jesús María Arrieta; Markus G. Weinbauer; Gerhard J. Herndl

2000-04-01T23:59:59.000Z

349

Evaluation of Radiation Impacts of Spent Nuclear Fuel Storage (SNFS-2) of Chernobyl NPP - 13495  

SciTech Connect (OSTI)

Radiation effects are estimated for the operation of a new dry storage facility for spent nuclear fuel (SNFS-2) of Chernobyl NPP RBMK reactors. It is shown that radiation exposure during normal operation, design and beyond design basis accidents are minor and meet the criteria for safe use of radiation and nuclear facilities in Ukraine. (authors)

Paskevych, Sergiy; Batiy, Valiriy; Sizov, Andriy [Institute for Safety Problems of Nuclear Power Plants, National Academy of Sciences of Ukraine, 36 a Kirova str. Chornobyl, Kiev region, 07200 (Ukraine)] [Institute for Safety Problems of Nuclear Power Plants, National Academy of Sciences of Ukraine, 36 a Kirova str. Chornobyl, Kiev region, 07200 (Ukraine); Schmieman, Eric [Battelle Memorial Institute, PO Box 999 MSIN K6-90, Richland, WA 99352 (United States)] [Battelle Memorial Institute, PO Box 999 MSIN K6-90, Richland, WA 99352 (United States)

2013-07-01T23:59:59.000Z

350

ATM Requirement in Gene Expression Responses to Ionizing Radiation in Human Lymphoblasts and Fibroblasts  

Science Journals Connector (OSTI)

...St. Charles, MO) software program. A two-dimensional...analysis was done using software and methods as described...ATM kinase by ionizing radiation and phosphorylation...toxicology, and drug safety evaluation. Cancer...exposure to ionizing radiation. Radiat Res 2000...

Cynthia L. Innes; Alexandra N. Heinloth; Kristina G. Flores; Stella O. Sieber; Paula B. Deming; Pierre R. Bushel; William K. Kaufmann; and Richard S. Paules

2006-03-01T23:59:59.000Z

351

Zebrafish as a “Biosensor”? Effects of Ionizing Radiation and Amifostine on Embryonic Viability and Development  

Science Journals Connector (OSTI)

...Environmental Health and Radiation Safety at the University...LabSpectrum v2.0.1 software (Scanalytics...and exposed to radiation at 4 hpf. Immediately...minutes before radiation exposure. For...Molecular Imaging Software, version 4.0...

Geoffrey A. Geiger; Sharon E. Parker; Andrew P. Beothy; Jennifer A. Tucker; Mary C. Mullins; and Gary D. Kao

2006-08-15T23:59:59.000Z

352

Measurement of the radiation field surrounding the Collider Detector at Fermilab  

SciTech Connect (OSTI)

We present here the first direct and detailed measurements of the spatial distribution of the ionizing radiation surrounding a hadron collider experiment. Using data from two different exposures we measure the effect of additional shielding on the radiation field around the Collider Detector at Fermilab (CDF). Employing a simple model we parameterize the ionizing radiation field surrounding the detector.

K. Kordas et al.

2004-01-28T23:59:59.000Z

353

Long-Term Dosimetry of Solar UV Radiation in Antarctica with Spores of Bacillus subtilis  

Science Journals Connector (OSTI)

...Microbiology Long-Term Dosimetry of Solar UV Radiation in Antarctica with...seasons in an exposure box open to solar radiation at the German Antarctic...subtilis of different repair capacity. Radiat. Environ. Biophys...Jagger, J. (ed.). 1985. Solar-UV actions on living cells...

Monika Puskeppeleit; Lothar E. Quintern; Saad el Naggar; Jobst-Ulrich Schott; Ute Eschweiler; Gerda Horneck; Horst Bücker

1992-08-01T23:59:59.000Z

354

MODIFICATION OF SHIRT BUTTONS FOR RETROSPECTIVE RADIATION DOSIMETRY AFTER A RADIOLOGICAL EVENT  

E-Print Network [OSTI]

are presented for a personal radiation dosimeter in the form of a clothing button to provide gamma-ray dose estimation for clinically-significant external radiation exposures to the general public due of people might receive significant doses of radiation. The dose received by an individual from external

Brenner, David Jonathan

355

Biological effects in unirradiated human tissue induced by radiation damage up to 1 mm away  

E-Print Network [OSTI]

in extrapolating radiation risk estimates from epidemi- ologically accessible doses down to very low doses where) and for assessing the risk from a low-dose exposure to a carcinogen such as ionizing radiation, where only a smallBiological effects in unirradiated human tissue induced by radiation damage up to 1 mm away Oleg V

356

Radiation at FUSRAP Sites U.S. Army Corps of Engineers Building Strong  

E-Print Network [OSTI]

2012 Formerly Utilized Sites Remedial Action Program (FUSRAP) The Nature of Radiation Radiation is a naturally occurring type of energy. It is released by unstable forms of atoms, the basic units of matter year from the ground surface. Food accounts for about 20 mrem of our annual radiation exposure. Natural

US Army Corps of Engineers

357

Kidney cancer and hydrocarbon exposures among petroleum refinery workers  

SciTech Connect (OSTI)

To evaluate the hypothesis of increased kidney cancer risk after exposure to hydrocarbons, especially those present in gasoline, we conducted a case-control study in a cohort of approximately 100,000 male refinery workers from five petroleum companies. A review of 18,323 death certificates identified 102 kidney cancer cases, to each of whom four controls were matched by refinery location and decade of birth. Work histories, containing an average of 15.7 job assignments per subject, were found for 98% of the cases and 94% of the controls. Tb each job, industrial hygienists assigned semiquantitative ratings for the intensity and frequency of exposures to three hydrocarbon categories: nonaromatic liquid gasoline distillates, aromatic hydrocarbons, and the more volatile hydrocarbons. Ratings of {open_quotes}present{close_quotes} or {open_quotes}absent{close_quotes} were assigned for seven additional exposures: higher boiling hydrocarbons, polynuclear aromatic hydrocarbons, asbestos, chlorinated solvents, ionizing radiation, and lead. Each exposure had either no association or a weak association with kidney cancer. For the hydrocarbon category of principal a priori interest, the nonaromatic liquid gasoline distillates, the estimated relative risk (RR) for any exposure above refinery background was 1.0 (95% confidence interval [CI] 0.5-1.9). Analyses of cumulative exposures and of exposures in varying time periods before kidney cancer occurrence also produced null or near-null results. In an analysis of the longest job held by each subject (average duration 9.2 years or 40% of the refiner&y work history), three groups appeared to be at increased risk: laborers (RR = 1.9,95% CI 1.0-3.9); workers in receipt, storage, and movements (RR = 2.5,95% CI 0.9-6.6); and unit cleaners (RR = 2.3, 95% CI 0.5-9.9). 53 refs., 7 tabs.

Poole, C.; Dreyer, N.A.; Satterfield, M.H. [Epidemiology Resources Inc., Newton Lower Falls, MA (United States); Levin, L. [Drexel Univ., Philadelphia, PA (United States)

1993-12-01T23:59:59.000Z

358

Temporary Emergency Exposure Limits for Chemicals: Methods and Practice  

Broader source: Energy.gov (indexed) [DOE]

DOE-HDBK-1046-2008 August 2008 DOE HANDBOOK TEMPORARY EMERGENCY EXPOSURE LIMITS FOR CHEMICALS: METHODS AND PRACTICE U.S. Department of Energy AREA EMER Washington, D.C. 20585 DOE-HDBK-1046-2008 ii DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. DOE-HDBK-1046-2008 iii Available on the Department of Energy Technical Standards Program Web site at http://www.hss.energy.gov/nuclearsafety/techstds/ DOE-HDBK-1046-2008 iv FOREWORD In 2005, the Office of Emergency Management and Policy (NA-41) within the National Nuclear Security Administration (NNSA), U.S. Department of Energy (DOE), issued DOE O 151.1C, Comprehensive Emergency Management System. This order, and its Guides issued in 2007, reference Acute Exposure Guideline Levels (AEGLs) and Emergency Response Planning

359

Effects on chickens of continuous exposure to low level electromagnetic, electric, and magnetic fields  

E-Print Network [OSTI]

for the degree of MASTER OF SCIENCE December 1972 Major Subjects Nuclear Engineering (Health Physics) EFFECTS ON CHI CKENS OF CONT INUOUS EXPOSURE TO LOW LEVEL ELECTRONAGNETIC, ELECTRIC, AND MAGNETIC 1 IELDS A Thesis by ROBERT SHERWOOD HOWELL Approved... exposure to ionizing radiation. The treated groups appear to have a significantly reduced growth rate and a slightly increased feed conversion ratio. The spleen weight in the 260 MHz {calculated average input power density of 0. 029 mW/cm ) group...

Howell, Robert Sherwood

1972-01-01T23:59:59.000Z

360

Comparing Accelerated Testing and Outdoor Exposure | Department...  

Broader source: Energy.gov (indexed) [DOE]

Comparing Accelerated Testing and Outdoor Exposure Comparing Accelerated Testing and Outdoor Exposure Presented at the PV Module Reliability Workshop, February 26 - 27 2013,...

Note: This page contains sample records for the topic "radiation exposure managing" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


361

Radiation Protection Act (Pennsylvania)  

Broader source: Energy.gov [DOE]

This Act combines the radiation safety provisions of The Atomic Energy Development and Radiation Control Act and the Environmental Radiation Protection Act, and empowers the Department of...

362

BNL NASA Space Radiation Laboratory  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

First Time Users Guide First Time Users Guide The following is a collection of useful facts that First Time Users of NSRL should familiarize themselves with. If you have any questions, contact the NSRL Liaison Physicist (631-344-3072 or 631-344-5830). You MUST have a dry run of your experiment before conducting your first NSRL run. When planning an exposure the time you need for each sample exposure should include time to change samples. If RHIC is running, the sample changing time is approximately 7 minutes. If RHIC is not running, time to change samples is only about 4 minutes. The size of the radiation field that can uniformly expose a set of samples can be as large as 20 x 20 cm2 for most ions and energies. By special request, the NSRL beam can operate in Large Beam mode with a 60 x 60 cm2 usable beam size.

363

Program Managers  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Program Managers Program Managers Enabling remarkable discoveries and tools that transform our understanding of energy and matter and advance national, economic, and energy...

364

FAQS Qualification Card - Radiation Protection | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Radiation Protection Radiation Protection FAQS Qualification Card - Radiation Protection A key element for the Department's Technical Qualification Programs is a set of common Functional Area Qualification Standards (FAQS) and associated Job Task Analyses (JTA). These standards are developed for various functional areas of responsibility in the Department, including oversight of safety management programs identified as hazard controls in Documented Safety Analyses (DSA). For each functional area, the FAQS identify the minimum technical competencies and supporting knowledge and skills for a typical qualified individual working in the area. FAQC-RadiationProtection.docx Description Radiation Protection Qualification Card More Documents & Publications FAQS Gap Analysis Qualification Card - Radiation Protection

365

Radiation risk in the structure of overall risk  

Science Journals Connector (OSTI)

Theoretical, methodological, and methodic aspects of the problem of radiation risk analysis are considered. It was shown that the potential risk caused by technogenic exposure cannot be selected practically for certain on the overall risk background relative to exposure of factors of non-radiation nature. The structure of the overall risk, both assessment and of its radiation component is given. The main factors limiting validity of radiation component of overall risk finding are discussed. An actual importance of problems for an estimation of radiation safety of both individual and society as a whole is systematised. Some aspects of acceptable risk assessment are considered. Volume and influence of risk technogenic sources on health are compared. Some general theses characterised the modern state of the problem.

V. Semenov

2006-01-01T23:59:59.000Z

366

Nevada Test Site Radiation Protection Program - Revision 1  

SciTech Connect (OSTI)

Title 10 Code of Federal Regulations (CFR) Part 835, 'Occupational Radiation Protection,' establishes radiation protection standards, limits, and program requirements for protecting individuals from ionizing radiation resulting from the conduct of U.S. Department of Energy (DOE) activities. 10 CFR 835.101(a) mandates that DOE activities be conducted in compliance with a documented Radiation Protection Program (RPP) as approved by DOE. This document promulgates the RPP for the Nevada Test Site (NTS), related (on-site or off-site) U.S. Department of Energy, National Nuclear Security Administration Nevada Site Office (NNSA/NSO) operations, and environmental restoration off-site projects. This NTS RPP promulgates the radiation protection standards, limits, and program requirements for occupational exposure to ionizing radiation resulting from NNSA/NSO activities at the NTS and other operational areas as stated in 10 CFR 835.1(a). NNSA/NSO activities (including design, construction, operation, and decommissioning) within the scope of this RPP may result in occupational exposures to radiation or radioactive material. Therefore, a system of control is implemented through specific references to the site-specific NV/YMP RCM. This system of control is intended to ensure that the following criteria are met: (1) occupational exposures are maintained as low as reasonably achievable (ALARA), (2) DOE's limiting values are not exceeded, (3) employees are aware of and are prepared to cope with emergency conditions, and (4) employees are not inadvertently exposed to radiation or radioactive material.

Radiological Control Managers' Council

2008-06-01T23:59:59.000Z

367

25.07.03.M3 Energy Risk Management Program Page 1 of 2 UNIVERSITY RULE  

E-Print Network [OSTI]

risk to market exposure, position TAMU to take advantage of changing energy market conditions Risk Management Strategy Committee, authorizes transactions, credit risk limits, commodity risk limits, reporting requirements, and market execution. Energy Risk Management Strategy Committee (ERMSC) is chaired

368

Low Dose Radiation Program: 2010 Low Dose Radiation Research Program  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Low Dose Radiation Research Program Investigators' Workshop Low Dose Radiation Research Program Investigators' Workshop »» Event Slide Show More than 150 people attended this year's workshop, held April 12-14 at the Renaissance M Street Hotel in Washington, D.C. In addition to 34 plenary talks and more than 70 poster presentations made by the program investigators, participants heard guest speakers from the National Cancer Institute and from sister low-dose programs in Europe and Japan. Remarks from DOE Dr. Anna Palmisano, Associate Director, Office of Science, Director for Biological and Environmental Research (BER), welcomed the meeting participants, thanked Low Dose Radiation Research Program Manager Dr. Noelle Metting for her leadership, and acknowledged the importance of the Low Dose Program to DOE because of its unique focus and important role. She

369

MSU Safety & Risk Management Page 1 of 7 SAFETY & RISK MANAGEMENT  

E-Print Network [OSTI]

dangerous to life or health (IDLH) if you cannot identify or reasonably estimate employee exposure. · Select, and correctly fits, the user. When selecting respirators for Immediately Dangerous to Life or Health (IDLHMSU Safety & Risk Management Page 1 of 7 SAFETY & RISK MANAGEMENT OCCUPATIONAL HEALTH & SAFETY

Dyer, Bill

370

EPIDEMIOLOGICAL STUDIES ON RADIATION CARCINOGENESIS IN HUMAN POPULATIONS FOLLOWING ACUTE EXPOSURE: NUCLEAR EXPLOSIONS AND MEDICAL RADIATION  

E-Print Network [OSTI]

estimation of the carcinogenic risk of low-dose, low-LET radiationradiation-induced cancer in man must necessarily be based primarily on human dose-incidence data. estimation

Fabrikant, J.I.

2010-01-01T23:59:59.000Z

371

Ecological Exposure Limits and Guidelines  

Science Journals Connector (OSTI)

Abstract Ecological exposure limits and guidelines represent the maximum level of a chemical substance that is considered to be safe or acceptable in environmental releases or compartments. The ecological exposure limits are established to protect the ecosystems and environmental resources and may refer to the emissions, e.g., effluents, atmospheric emissions or discharges, or to the final concentration in the receiving body, e.g., water, sediment, or soil. There are two main methods for setting these limits. One focuses on the identification of best available practices for different sectors and processes; the other is a particular case of risk assessment, named by some authors as reverse risk assessment, which establishes the maximum level in the emission or receiving compartment maintaining an acceptable level of risk. The term ‘exposure limit’ is rarely used in the ecological context; the most usual terms are criteria, standards, or objectives.

J.V. Tarazona

2014-01-01T23:59:59.000Z

372

Quantitative PCR for Determining the Infectivity of Bacteriophage MS2 upon Inactivation by Heat, UV-B Radiation, and Singlet Oxygen: Advantages and Limitations of an Enzymatic Treatment To Reduce False-Positive Results  

Science Journals Connector (OSTI)

...wavelength; Sankyo Denki, Tokyo, Japan) for 1 to 4 min. The UV irradiance...described elsewhere (32). UV radiation exposures of 1 to 4 min were...of MS2 before exposure to UV radiation. Samples were taken during...denaturation, e.g., UV radiation. A further analysis into the...

Brian M. Pecson; Luisa Valério Martin; Tamar Kohn

2009-07-10T23:59:59.000Z

373

Conference Management  

Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

To establish requirements and responsibilities with respect to managing conferences sponsored by the Department of Energy (DOE) or by DOE management and operating contractors and other contractors who perform work at DOE-owned or -leased facilities, including management and integration contractors and environmental restoration management contractors (when using funds that will be reimbursed by DOE). Cancels DOE N 110.3.

1999-11-03T23:59:59.000Z

374

SRNL Deploys Innovative Radiation Mapping Device | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

SRNL Deploys Innovative Radiation Mapping Device SRNL Deploys Innovative Radiation Mapping Device SRNL Deploys Innovative Radiation Mapping Device November 3, 2011 - 12:00pm Addthis The Savannah River National Laboratory completed successful deployments of the RadBall, a gamma radiation-mapping device. The Savannah River National Laboratory completed successful deployments of the RadBall, a gamma radiation-mapping device. AIKEN, S.C. - The Savannah River National Laboratory (SRNL), EM's national lab, has made strides with remote technology designed to reduce worker exposure while measuring radiation in contaminated areas. uilding on a successful collaboration with the United Kingdom's National Nuclear Laboratory, SRNL completed successful deployments of RadBall, a gamma radiation-mapping device, after testing the technology. The device

375

Radiating gravastars  

SciTech Connect (OSTI)

Considering a Vaidya exterior spacetime, we study dynamical models of prototype gravastars, made of an infinitely thin spherical shell of a perfect fluid with the equation of state p = ?, enclosing an interior de Sitter spacetime. We show explicitly that the final output can be a black hole, an unstable gravastar, a stable gravastar or a 'bounded excursion' gravastar, depending on how the mass of the shell evolves in time, the cosmological constant and the initial position of the dynamical shell. This work presents, for the first time in the literature, a gravastar that emits radiation.

Chan, R. [Coordenação de Astronomia e Astrofísica, Observatório Nacional, Rua General José Cristino, 77, São Cristóvão 20921-400, Rio de Janeiro, RJ (Brazil); Silva, M.F.A. da [Departamento de Física Teórica, Instituto de Física, Universidade do Estado do Rio de Janeiro, Rua São Francisco Xavier 524, Maracanã 20550-900, Rio de Janeiro - RJ (Brazil); Rocha, Jaime F. Villas da [Instituto de Biociências, Departamento de Ciências Naturais, Universidade Federal do Estado do Rio de Janeiro, Av. Pasteur 458, Urca, CEP 22290-240, Rio de Janeiro, RJ (Brazil); Wang, Anzhong, E-mail: chan@on.br, E-mail: mfasnic@gmail.com, E-mail: jfvroch@pq.cnpq.br, E-mail: anzhong_wang@baylor.edu [GCAP-CASPER, Department of Physics, Baylor University, Waco, TX 76798 (United States)

2011-10-01T23:59:59.000Z

376

Low Dose Radiation Research Program: Do Heritable Differences in an  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Do Heritable Differences in an Individual's Immune System Predict Do Heritable Differences in an Individual's Immune System Predict Differential Sensitivity to Low Dose Radiation Exposure? Quantitative trait loci (QTL) mapping Enlarge Image Quantitative trait loci (QTL) mapping identifies two strong candidate genes, Ptprk (Chr 10) and Acp1 (Chr 12) that are linked to genetic variation in the relative abundance of peripheral Th and Tc cells, two cell populations that are sensitive to radiation exposure at low doses. Expression of each gene is significantly altered by exposure to low dose radiation in vivo. Genome-wide scans for the ratio of %CD4+ (Th) to %CD8+ (Tc) lymphocytes were performed using genenetwork.org. The solid horizontal line represents genome-wide significance at P < 0.05, based on 1,000 permutations. LOD indicates logarithm of odds scores.

377

Radiation dose modeling using IGRIP and Deneb/ERGO  

SciTech Connect (OSTI)

The Radiological Environment Modeling System (REMS) quantifies dose to humans in radiation environments using the IGRIP (Interactive Graphical Robot Instruction Program) and Deneb/ERGO (Ergonomics) simulation software products. These commercially available products are augmented with custom C code to provide the radiation exposure information to and collect the radiation dose information from the workcell simulations. The emphasis of this paper is on the IGRIP and Deneb/ERGO parts of REMS, since that represents the extension to existing capabilities developed by the authors. Through the use of any radiation transport code or measured data, a radiation exposure input database may be formulated. User-specified IGRIP simulations utilize these database files to compute and accumulate dose to human devices (Deneb`s ERGO human) during simulated operations around radiation sources. Timing, distances, shielding, and human activity may be modeled accurately in the simulations. The accumulated dose is recorded in output files, and the user is able to process and view this output. REMS was developed because the proposed reduction in the yearly radiation exposure limit will preclude or require changes in many of the manual operations currently being utilized in the Weapons Complex. This is particularly relevant in the area of dismantlement activities at the Pantex Plant in Amarillo, TX. Therefore, a capability was needed to be able to quantify the dose associated with certain manual processes so that the benefits of automation could be identified and understood.

Vickers, D.S.; Davis, K.R.; Breazeal, N.L.; Watson, R.A. [Sandia National Labs., Albuquerque, NM (United States); Ford, M.S. [Battelle Pantex, Amarillo, TX (United States). Dept. of Radiation Safety

1995-12-31T23:59:59.000Z

378

Industrial Energy Efficiency as a Risk Management Strategy  

E-Print Network [OSTI]

portfolio. Traditional strategies to combat against unwanted exposure in this market include hedging and long term and futures contracts. However, the following explores the topic of considering energy efficiency as a risk management tool in reducing...

Naumoff, C.; Shipley, A. M.

2007-01-01T23:59:59.000Z

379

Sustainable risk management of emerging contaminants in municipal wastewaters  

Science Journals Connector (OSTI)

...uncertainty remains regarding the risks from EDCs. Due to the scientific...the interim management of potential risks of exposure to such substances...Burger 2003). If the level of acceptable risk is ultimately a societal choice...

2009-01-01T23:59:59.000Z

380

Natural and Radiation Carcinogenesis in Man. III. Radiation Carcinogenesis  

Science Journals Connector (OSTI)

...mice. NATURAL AND RADIATION CARCINOGENESIS IN MAN. 3. RADIATION CARCINOGENESIS. | Journal Article | Japan Neoplasms etiology Neoplasms, Radiation-Induced Radiation Genetics | JAPAN NEOPLASM ETIOLOGY NEOPLASMS, RADIATION-INDUCED RADIATION...

1965-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "radiation exposure managing" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


381

Occupation, Exposure to Chemicals, Sensitizing Agents, and Risk of Multiple Myeloma in Sweden  

Science Journals Connector (OSTI)

...radiation, asbestos, metals, engine exhausts, and specific solvents...fishing sector both in the general cohort [RR, 1.18; 95 confidence...associations observed in the general cohort. Third, the so-called...etiologic agents, exposure to diesel exhausts, zoonotic virus infections...

Virginia Lope; Beatriz Pérez-Gómez; Nuria Aragonés; Gonzalo López-Abente; Per Gustavsson; Nils Plato; Jan-Paul Zock; and Marina Pollán

2008-11-01T23:59:59.000Z

382

Distribution of uranium in drinking water and associated age-dependent radiation dose in India  

Science Journals Connector (OSTI)

......uranium in Argentina bottled mineral waters. Radiat. Prot. Dosim (1996...exposure to natural uranium in well water. J. Environ. Radioact (2002...Identification, investigation and remediation of ground water containing elevated levels of......

S. K. Sahoo; S. Mohapatra; A. Chakrabarty; C. G. Sumesh; V. N. Jha; R. M. Tripathi; V. D. Puranik

2009-09-01T23:59:59.000Z

383

Tryptophan Cluster Protects Human ?D-Crystallin from Ultraviolet Radiation-Induced Photoaggregation  

E-Print Network [OSTI]

Exposure to ultraviolet radiation (UVR) is a significant risk factor for age-related cataract, a disease of the human lens and the most prevalent cause of blindness in the world. Cataract pathology involves protein misfolding ...

Schafheimer, Steven Nathaniel

384

Microbial Community in the Soil Determines the Forest Recovery Post-Exposure to Gamma Irradiation  

Science Journals Connector (OSTI)

High concentrations of radioactive isotopes can find their way into the environment mainly during the storage of high-level radioactive wastes,(1) including spent nuclear reactor fuels generated by nuclear power plants, wastes generated during reprocessing of these fuels, and wastes generated during development of nuclear weapons. ... (5-9) The question of whether microbial populations exposed to ionizing radiation recover in natural environments remains unanswered. ... In the areas where ionizing radiation exposure is likely, such as nuclear reactors or high-level radioactive waste storage sites, it would be valuable to study and archive the radiation sensitive microbial organisms that are essential for proper ecosystem function. ...

Vishal Shah; Shreya Shah; Herman Mackey; Murty Kambhampati; Daniel Collins; Scot E. Dowd; Robert Colichio; Kevin T. McDonnell; Timothy Green

2013-09-25T23:59:59.000Z

385

Post-accident inhalation exposure and experience with plutonium  

SciTech Connect (OSTI)

This paper addresses the issue of inhalation exposure immediately afterward and for a long time following a nuclear accident. For the cases where either a nuclear weapon burns or explodes prior to nuclear fission, or at locations close to a nuclear reactor accident containing fission products, a major concern is the inhalation of aerosolized plutonium (Pu) particles producing alpha-radiation. We have conducted field studies of Pu- contaminated real and simulated accident sites at Bikini, Johnston Atoll, Tonopah (Nevada), Palomares (Spain), Chernobyl, and Maralinga (Australia).

Shinn, J

1998-06-01T23:59:59.000Z

386

Radiation dose estimation in computed tomography examinations using NRPB-SR250 software in aretrospective analysis of a patient population  

Science Journals Connector (OSTI)

......NRPB-SR250 software in aretrospective...fi 1 STUK-Radiation and Nuclear Safety Authority...342:d947. RADIATION DOSE ESTIMATION...NRPB-SR250 SOFTWARE IN A RETROSPECTIVE...of medical radiation exposure...to patients safety, frequent......

E. Salminen; H. Niiniviita; J. Kulmala; H. Määttänen; H. Järvinen

2012-12-01T23:59:59.000Z

387

Adaptors for radiation detectors  

DOE Patents [OSTI]

Described herein are adaptors and other devices for radiation detectors that can be used to make accurate spectral measurements of both small and large bulk sources of radioactivity, such as building structures, soils, vessels, large equipment, and liquid bodies. Some exemplary devices comprise an adaptor for a radiation detector, wherein the adaptor can be configured to collimate radiation passing through the adapter from an external radiation source to the radiation detector and the adaptor can be configured to enclose a radiation source within the adapter to allow the radiation detector to measure radiation emitted from the enclosed radiation source.

Livesay, Ronald Jason

2014-04-22T23:59:59.000Z

388

Radiation Safety  

Broader source: Energy.gov (indexed) [DOE]

Brotherhood of Locomotive Brotherhood of Locomotive Engineers & Trainmen Scott Palmer BLET Radiation Safety Officer New Hire Training New Hire study topics * GCOR * ABTH * SSI * Employee Safety * HazMat * Railroad terminology * OJT * 15-week class * Final test Hazardous Materials * Initial new-hire training * Required by OSHA * No specified class length * Open book test * Triennial module Locomotive Engineer Training A little bit older...a little bit wiser... * Typically 2-4 years' seniority * Pass-or-get-fired promotion * Intensive program * Perpetually tested to a higher standard * 20 Weeks of training * 15 of that is OJT * General Code of Operating Rules * Air Brake & Train Handling * System Special Instructions * Safety Instructions * Federal Regulations * Locomotive Simulators * Test Ride * Pass test with 90% Engineer Recertification

389

Oak Rigde Associated Universities (ORAU) Radiation Emergency Assistance  

Broader source: Energy.gov (indexed) [DOE]

Rigde Associated Universities (ORAU) Radiation Emergency Rigde Associated Universities (ORAU) Radiation Emergency Assistance Center/Training Site (REAC/TS), ORAU Director Oak Rigde Associated Universities (ORAU) Radiation Emergency Assistance Center/Training Site (REAC/TS), ORAU Director Oak Rigde Associated Universities (ORAU) Radiation Emergency Assistance Center/Training Site (REAC/TS), ORAU Director Oak Rigde Associated Universities (ORAU) Radiation Emergency Assistance Center/Training Site (REAC/TS), ORAU Director More Documents & Publications iManage Strategic Integrated Procurement Enterprise System (STRIPES) PIA, Office of Procurement and Assistance Management LM Records Handling System (LMRHS01) - Energy Employees Occupational Illness Compensation Program Act, Office of Legacy Management LM Records Handling System-Freedom of Information/Privacy Act, Office of

390

Management Responsibilities  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Management Responsibilities Management Responsibilities Depleted UF6 Management Responsibilities DOE has responsibility for safe and efficient management of approximately 700,000 metric tons of depleted UF6. Organizational Responsibilities In the United States, the U.S. Department of Energy is responsible for managing all the depleted uranium that has been generated by the government and has been declared surplus to national defense needs. In addition, as a result of two memoranda of agreement that have been signed between the DOE and USEC, the DOE has assumed management responsibility for approximately 145,000 metric tons of depleted UF6 that has been or will be generated by USEC. Any additional depleted UF6 that USEC generates will be USEC's responsibility to manage. DOE Management Responsibility

391

Low Dose Radiation Research Program: Janet E. Baulch  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Janet E. Baulch Janet E. Baulch University of California, Davis Currently Funded Projects Impact of Genetic Factors on the Heritable Effects of Paternal Exposure to Low-Dose Radiation Technical Abstracts 2003 Workshop: DNA damage in acutely irradiated F2 mice with a history of paternal F0 germline irradiation Baulch, J.E. and Raabe, O G. 2002 Workshop Impact of Genetic Factors on the Heritable Effects of Paternal Exposure to Low-Dose Radiation, Baulch, J.E., Ph.D. and Raabe, O.G., Ph.D. Publications Kovalchuk, O. and Baulch, J.E. (2008). Epigenetic changes and nontargeted radiation effects - Is there a link? Environmental and Molecular Mutagenesis 49(1):16-25 Laiakis, E.C., Baulch, J.E., and Morgan, W.F. (2008). Interleukin 8 exhibits a pro-mitogenic and pro-survival role in radiation induced

392

Evaluation and Control of Radiation Dose to the Embryo/Fetus Guide for Use with Title 10, Code of Federal Regulations, Part 835, Occupational Radiation Protection  

Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

This Guide provides an acceptable methodology for establishing and operating a program to control fetal exposure to ionizing radiation and evaluate the resultant dose that will comply with U.S. Department of Energy (DOE) requirements specified in Title 10 of the Code of Federal Regulations (CFR), Part 835, Occupational Radiation Protection (DOE 1998), hereinafter referred to as 10 CFR 835.

1999-04-29T23:59:59.000Z

393

Exposure of workers in Tusnica coal mine  

Science Journals Connector (OSTI)

......and for the Safety of Radiation Sources(4). Chemical...addition to natural radiation, based on the natural...IAEA TECDOC-1472. Naturally Occuring Radioactive Material...protection against ionizing radiation and for the safety of......

A. Vidic; Z. Ilic; D. Deljkic; F. Adrovic

2011-03-01T23:59:59.000Z

394

Federal Energy Management Program: Energy Management Guidance  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Energy Management Energy Management Guidance to someone by E-mail Share Federal Energy Management Program: Energy Management Guidance on Facebook Tweet about Federal Energy Management Program: Energy Management Guidance on Twitter Bookmark Federal Energy Management Program: Energy Management Guidance on Google Bookmark Federal Energy Management Program: Energy Management Guidance on Delicious Rank Federal Energy Management Program: Energy Management Guidance on Digg Find More places to share Federal Energy Management Program: Energy Management Guidance on AddThis.com... Requirements by Subject Requirements by Regulation Notices & Rules Guidance Facility Reporting Fleet Reporting Energy Management Guidance The Federal Energy Management Program (FEMP) provides guidance on Federal

395

Environmental Management Waste Management Facility (EMWMF) at...  

Office of Environmental Management (EM)

Environmental Management Waste Management Facility (EMWMF) at Oak Ridge Environmental Management Waste Management Facility (EMWMF) at Oak Ridge Full Document and Summary Versions...

396

Association between Ambient Ultraviolet Radiation and Risk of Epithelial Ovarian Cancer  

Science Journals Connector (OSTI)

...Boscoe FP , Schymura MJ.Solar ultraviolet-B exposure and...Spain with respect to indices of solar UVB irradiance and smoking...a case-control study in Mexico.Oncology 2002;63:151-7...suggest that higher exposure to solar ultraviolet radiation (UVR...

Bich Tran; Susan J. Jordan; Robyn Lucas; Penelope M. Webb; and Rachel Neale

2012-11-01T23:59:59.000Z

397

Assessment of exposure to depleted uranium  

Science Journals Connector (OSTI)

......Article Assessment of exposure to depleted uranium P. Roth V. Hollriegl E. Werner...for determining the amount of depleted uranium (DU) incorporated. The problems...Assessment of exposure to depleted uranium. | In most circumstances......

P. Roth; V. Höllriegl; E. Werner; P. Schramel

2003-07-01T23:59:59.000Z

398

Low-Dose Ionizing Radiation Alters the Epigenome of the Avy Mouse  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Ionizing Radiation Alters the Epigenome of the A Ionizing Radiation Alters the Epigenome of the A vy Mouse Autumn Bernal 1,2,3 , Dale Huang 1 , Yue Li 4 , Dana Dolinoy 5 , and Randy Jirtle 1 Department of Radiation Oncology 1 , University Program in Genetics and Genomic 2 , Integrated Toxicology & Environmental Health Program 3 , Department of Community and Family Medicine 4 , Duke University Medical Center, Durham, NC, USA, Department of Environmental and Health Sciences, University of Michigan, Ann Arbor, MI, USA 4 Background: Humans have evolved and thrived amidst constant low-dose (0-10 cGy) background radiation exposure from natural sources. Currently, however, the frequency of exposures to low doses of radiation is increasing due to man-made sources such as diagnostic imaging and nuclear power. This increased exposure has led to concerns amongst the general public and the government about the

399

Re-examining the health effects of radiation and its protection  

Science Journals Connector (OSTI)

The health effects of radiation from atomic explosions in Japan were completely different from those due to radiation from the Co-60 contaminated apartments in Taiwan. The sudden exposure to acute radiation in extremely high doses killed Japanese people, and harmed the survivors in lower doses as shown by increased cancer mortality, especially the leukemia based on the LNT model. The chronic radiation received by the residents unknowingly in the Co-60 contaminated apartments in Taiwan, even in higher doses, caused no excess cancer deaths; on the contrary their spontaneous cancer deaths were sharply reduced to only about 2.5% of that of the general population, and hereditary defects in their offspring were only 5%â??7% of those of the normal population. Therefore, the residents in the Co-60 contamination apartments had coincidently accomplished a human experiment of the health effects to human beings. The chronic radiation received from the Co-60 contaminated houses is quite similar to the radiation exposure to the workers and public in the peaceful use of nuclear energy and medical radiation. Acute radiation from a nuclear accident could harm a limited number of people, but the chronic radiation might benefit people, such as in the case of the Chernobyl accident. People should not be fearful of chronic exposure to low radiation and the traditional radiation protection policy and practices used in past 60 years should be revised based on the health effects observed in Taiwan.

Y.C. Luan; M.C. Shieh; S.T. Chen; H.T. Kung; K.L. Soong; Y.C. Yeh; T.S. Chou; W.C. Fang; S.L. Yao; C.J. Pong; S.H. Mong; J.T. Wu; J.M. Wu; H.J. Jen; W.L. Chen; W.P. Deng; M.F. Wu; M.L. Shen; C.P. Sun

2006-01-01T23:59:59.000Z

400

Modeling Residential Exposure to Secondhand Tobacco Smoke  

E-Print Network [OSTI]

transfer factors for air pollution health risk assessment.combustion, air pollution exposure, and health: The situa-

Klepeis, Neil E; Nazaroff, William W

2006-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "radiation exposure managing" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


401

Verifying a nuclear weapon`s response to radiation environments  

SciTech Connect (OSTI)

The process described in the paper is being applied as part of the design verification of a replacement component designed for a nuclear weapon currently in the active stockpile. This process is an adaptation of the process successfully used in nuclear weapon development programs. The verification process concentrates on evaluating system response to radiation environments, verifying system performance during and after exposure to radiation environments, and assessing system survivability.

Dean, F.F.; Barrett, W.H.

1998-05-01T23:59:59.000Z

402

Environment/Health/Safety (EHS): Radiation Protection Group  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Radiation Protection Group Radiation Protection Group Under the direction of Radiological Control Manager (RCM) David Kestell, the Radiation Protection Group (RPG) provides radiation safety-related technical assistance to the lab community to ensure that all work is performed safely, efficiently and in compliance with applicable regulations and guidelines. BELLA facility BELLA facility BELLA facility BELLA facility BELLA NDCX NDCX Gretina Gamma particle device PET Scanner APEX APEX APEX LASER LASER Rifle, CO Rifle, CO The group: Authorizes work with radioactive material and radiation-producing machines Manages the site inventory of radioactive and nuclear material Provides coverage for: Radiological operations Radiological engineering and shielding design Internal / external dosimetry services Radiation Safety and Transportation training

403

Low Dose Radiation Research Program: 2003 Molecular Characterization of the  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Characterization of the Roles of SOD Genes in Mammalian Characterization of the Roles of SOD Genes in Mammalian Cellular Response to Low Dose Radiation Authors: Chuan-Yuan Li,1 Eric Chuang2 Institutions: 1Dept of Radiation Oncology, Duke University Medical Center, Durham, NC, 2Advanced Technology Center, Center for Cancer Research, National Cancer Institute, Bethesda, Maryland The potential risks of exposure to low dose radiation are of major concerns to the DOE/OBER Low Dose Radiation Research Program. It has been long recognized that much of the radiation-induced genetic damage to cells are caused by secondary oxidative species. Therefore, internal cellular defense systems against oxidative stress play significant roles in countering genetic damage induced by ionizing radiation. The role of the detoxifying

404

Low Dose Radiation Research Program: Molecular Characterization of the  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Molecular Characterization of the Roles of SOD Genes in Mammalian Molecular Characterization of the Roles of SOD Genes in Mammalian Cellular Response to Low Dose Radiation Authors: Chuan-Yuan Li, Zhanjun Guo, Zhonghui Yang, and Eric Chuang Institutions: Dept of Radiation Oncology, Duke University Medical Center, Durham, NC Advanced Technology Center, Center for Cancer Research, National Cancer Institute, Bethesda, Maryland Background The potential risks of exposure to low dose radiation are of major concerns to the DOE/OBER Low Dose Radiation Research Program. It has been long recognized that much of the radiation-induced genetic damage to cells are caused by secondary oxidative species. Therefore internal cellular defense systems against oxidative stress play significant roles in countering genetic damage induced by ionizing radiation. The role of the detoxifying

405

Hydrogen peroxide significantly contributes to radiation-induced genomic instability  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

peroxide significantly contributes to radiation- peroxide significantly contributes to radiation- induced genomic instability Disha Dayal 1 , Sean M. Martin 1 , Sujatha Venkataraman 1 , Charles L. Limoli 2 , Douglas R Spitz 1 . 1 Free Radical and Radiation Biology Program, The University of Iowa, Iowa City, IA- 52246, 2 Department of Radiation Oncology, The University of California, Irvine, CA-92697 Chronic metabolic oxidative stress is associated with genomic instability following exposure to ionizing radiation (IR). Mitochondria have long been known to be a major source of reactive oxygen species (ROS) capable of causing oxidative stress. We hypothesized that radiation damages mitochondria, leading to oxidative stress and eventually genomic instability. This hypothesis is based on preliminary studies in parental

406

Nuclear radiation-warning detector that measures impedance  

DOE Patents [OSTI]

This invention is a nuclear radiation-warning detector that measures impedance of silver-silver halide on an interdigitated electrode to detect light or radiation comprised of alpha particles, beta particles, gamma rays, X rays, and/or neutrons. The detector is comprised of an interdigitated electrode covered by a layer of silver halide. After exposure to alpha particles, beta particles, X rays, gamma rays, neutron radiation, or light, the silver halide is reduced to silver in the presence of a reducing solution. The change from the high electrical resistance (impedance) of silver halide to the low resistance of silver provides the radiation warning that detected radiation levels exceed a predetermined radiation dose threshold.

Savignac, Noel Felix; Gomez, Leo S; Yelton, William Graham; Robinson, Alex; Limmer, Steven

2013-06-04T23:59:59.000Z

407

Electromagnetic and nuclear radiation detector using micromechanical sensors  

DOE Patents [OSTI]

Electromagnetic and nuclear radiation is detected by micromechanical sensors that can be coated with various interactive materials. As the micromechanical sensors absorb radiation, the sensors bend and/or undergo a shift in resonance characteristics. The bending and resonance changes are detected with high sensitivity by any of several detection methods including optical, capacitive, and piezoresistive methods. Wide bands of the electromagnetic spectrum can be imaged with picoJoule sensitivity, and specific absorptive coatings can be used for selective sensitivity in specific wavelength bands. Microcantilevers coated with optical cross-linking polymers are useful as integrating optical radiation dosimeters. Nuclear radiation dosimetry is possible by fabricating cantilevers from materials that are sensitive to various nuclear particles or radiation. Upon exposure to radiation, the cantilever bends due to stress and its resonance frequency shifts due to changes in elastic properties, based on cantilever shape and properties of the coating.

Thundat, Thomas G. (Knoxville, TN); Warmack, Robert J. (Knoxville, TN); Wachter, Eric A. (Oak Ridge, TN)

2000-01-01T23:59:59.000Z

408

INVESTMENT MANAGEMENT OFFICE MANAGEMENT OFFICE  

E-Print Network [OSTI]

INVESTMENT MANAGEMENT OFFICE INVESTMENT MANAGEMENT OFFICE THE UNIVERSITY OF UTAH University of Utah | Investment Management Office Quarterly Summary The Endowment Pool had a positive first quarter (ending March gain from investments of $7.8 million. The Endowment Pool unit value of $100 has grown to $175 in 10

409

Nuclear radiation electronic gear  

Science Journals Connector (OSTI)

Nuclear radiation electronic gear ... Examines the line of nuclear radiation instrumentation offered by Nuclear-Chicago Corporation and Victoreen Instrument Company. ... Nuclear / Radiochemistry ...

S. Z. Lewin

1961-01-01T23:59:59.000Z

410

Radiation Control (Virginia)  

Broader source: Energy.gov [DOE]

The Department of Health is responsible for regulating radiation and radioactive materials in the Commonwealth of Virginia. Although the Department's Radiation Control Program primarily focuses on...

411

Discoloration resistant, flexible, radiation curable coating compositions  

SciTech Connect (OSTI)

A low dosage radiation polymerizable protective and decorative coating composition or paint, coated articles bearing such a protective coating and processess for preparing such articles. The radiation polymerizable coating composition comprises an organic resin/monomer mixture of: (A) between about 97 and about 3 weight percent alphabeta olefinically unsaturated organic resin containing between about 0.5 and about 5 vinyl unsaturation units per 1000 molecular weight of said resin, and (B) between about 3 and about 97 weight percent vinyl monomers polymerizable with said resin upon exposure to radiation, characterized in that said vinyl monomers include N-vinyl-2-pyrrolidone in an amount of from about 3 and up to about 10 weight percent based on the total weight of (A) and (B). The flexible coating exhibits excellent physical qualtities and good adhesion to a variety of substrates being particularly suitable for use on vinyl chloride fabric, wherein it is discoloration resistant after heat aging. Preferred articles bearing such a coating, which may comprise large amounts of pigment, are preferably cured by exposure to electron beam radiation.

Cassatta, J.C.; Garrett, D.L. Jr.; Van Oene, H.

1984-10-16T23:59:59.000Z

412

Exposure Assessment for Bioaerosols in Health Studies  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Exposure Assessment for Bioaerosols in Health Studies Exposure Assessment for Bioaerosols in Health Studies Speaker(s): Carol Rao Date: July 9, 2004 - 12:00pm Location: Bldg. 90 Seminar Host/Point of Contact: Mark Mendell Exposures to fungi have been linked with asthma, toxicoses, hypersensitivity pneumonitis, and a range of non-specific symptoms. Definitive associations between indoor fungal exposure and health effects in population-based exposure-response studies, however, have not been well established. Issues in exposure assessment methods, both in collection and analysis, are major limitations. Classic methods for assessing airborne fungi rely upon collecting and analyzing whole fungal spores by culture. However, quantifying whole fungal spores may not fully describe fungal exposures, especially for purposes of investigating adverse respiratory

413

The Efficacy of a Broad-spectrum Sunscreen to Protect Engineered Human Skin from Tissue and DNA Damage Induced by Solar Ultraviolet Exposure  

Science Journals Connector (OSTI)

...Specifically, the capacity of sunscreens to prevent...and DNA damage after solar UV radiation. Engineered...DNA damage induced by solar ultraviolet exposure...Specifically, the capacity of sunscreens to prevent...and DNA damage after solar UV radiation. Engineered...

Vickram Bissonauth; Régen Drouin; David L. Mitchell; Marc Rhainds; Joël Claveau; and Mahmoud Rouabhia

2000-10-01T23:59:59.000Z

414

Federal Energy Management Program: Computerized Maintenance Management  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Computerized Computerized Maintenance Management Systems to someone by E-mail Share Federal Energy Management Program: Computerized Maintenance Management Systems on Facebook Tweet about Federal Energy Management Program: Computerized Maintenance Management Systems on Twitter Bookmark Federal Energy Management Program: Computerized Maintenance Management Systems on Google Bookmark Federal Energy Management Program: Computerized Maintenance Management Systems on Delicious Rank Federal Energy Management Program: Computerized Maintenance Management Systems on Digg Find More places to share Federal Energy Management Program: Computerized Maintenance Management Systems on AddThis.com... Sustainable Buildings & Campuses Operations & Maintenance Federal Requirements Program Management

415

LRRB Pavement Management Systems Pavement Management Systems  

E-Print Network [OSTI]

LRRB Pavement Management Systems Pavement Management Systems Presented by: Michael Marti SRF for implementing and monitoring research results (RIC) #12;LRRB Pavement Management Systems LRRB Structure LRRB Current Pavement Management System Used ICON (Goodpointe) Year of Pavement Management System

Minnesota, University of

416

Human radiation studies: Remembering the early years. Oral history of Merril Eisenbud, January 26, 1995  

SciTech Connect (OSTI)

Merril Eisenbud was interviewed on January 26, 1995 by representatives of the US DOE Office of Human Radiation Experiments. Following a brief biographical sketch, Mr. Eisenbud relates his remembrances as the AEC`s first industrial hygienist, the setting up of AEC`s Health and Safety Laboratory, monitoring radioactive fallout, and use or exposure of humans to radiation.

NONE

1995-05-01T23:59:59.000Z

417

We can do better than effective dose for estimating or comparing low-dose radiation risks  

E-Print Network [OSTI]

We can do better than effective dose for estimating or comparing low-dose radiation risks D of exposure to different radiation fields. More commonly these days, it is used to estimate or compare radi. Keywords: Low dose risk estimation; Effective dose; Flawed definition; Effective risk 1. INTRODUCTION

Brenner, David Jonathan

418

Mutation Research 504 (2002) 91100 Bystander effects in radiation-induced genomic instability  

E-Print Network [OSTI]

Mutation Research 504 (2002) 91­100 Bystander effects in radiation-induced genomic instability recombination and other phenotypes associated with genomic instability. © 2002 Elsevier Science B.V. All rights reserved. Keywords: Bystander effects; Genomic instability; Ionizing radiation 1. Introduction Exposure

419

Low-Dose Radiation Cataract and Genetic Determinants of Radiosensitivity  

SciTech Connect (OSTI)

The lens of the eye is one of the most radiosensitive tissues in the body. Ocular ionizing radiation exposure results in characteristic, dose related, progressive lens changes leading to cataract formation. While initial, early stages of lens opacification may not cause visual disability, the severity of such changes progressively increases with dose until vision is impaired and cataract extraction surgery may be required. Because of the transparency of the eye, radiation induced lens changes can easily be followed non-invasively over time. Thus, the lens provides a unique model system in which to study the effects of low dose ionizing radiation exposure in a complex, highly organized tissue. Despite this observation, considerable uncertainties remain surrounding the relationship between dose and risk of developing radiation cataract. For example, a growing number of human epidemiological findings suggest significant risk among various groups of occupationally and accidentally exposed individuals and confidence intervals that include zero dose. Nevertheless, questions remain concerning the relationship between lens opacities, visual disability, clinical cataract, threshold dose and/or the role of genetics in determining radiosensitivity. Experimentally, the response of the rodent eye to radiation is quite similar to that in humans and thus animal studies are well suited to examine the relationship between radiation exposure, genetic determinants of radiosensitivity and cataractogenesis. The current work has expanded our knowledge of the low-dose effects of X-irradiation or high-LET heavy ion exposure on timing and progression of radiation cataract and has provided new information on the genetic, molecular, biochemical and cell biological features which contribute to this pathology. Furthermore, findings have indicated that single and/or multiple haploinsufficiency for various genes involved in DNA repair and cell cycle checkpoint control, such as Atm, Brca1 or Rad9, influence cataract development and thus radiosensitivity. These observations have direct applicability to various human populations including accidentally exposed individuals, interventional medical workers, astronauts and nuclear plant workers.

Kleiman, Norman Jay [Columbia University] [Columbia University

2013-11-30T23:59:59.000Z

420

SUBCONTRACT MANAGEMENT  

Broader source: Energy.gov (indexed) [DOE]

-1 -1 CHAPTER 10 SUBCONTRACT MANAGEMENT (Revised October 19, 2011) WHAT ARE THE BASIC PRINCIPLES AND OBJECTIVES OF SUBCONTRACT MANAGEMENT? 1. To ensure contractors establish, document, and maintain adequate purchasing systems. 2. To ensure contractors flow down contract requirements to subcontractors. WHY IS SUBCONTRACT MANAGEMENT IMPORTANT? In many Department prime contracts a significant portion of the obligated dollars is spent on subcontract work. Due to the absence of a direct contractual relationship with the subcontractor, the Department must rely on the prime contractor to manage subcontract work. Subcontractors perform significant work efforts at sites and are an integral part of the site's success. Prime

Note: This page contains sample records for the topic "radiation exposure managing" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


421

Program Manager  

Broader source: Energy.gov [DOE]

A successful candidate in this position will participate in a wide spectrum of program and project management activities involving systems engineering and integration support for Defense Programs...

422

Water Management  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Water Management This department applies multi-disciplinary science and technology-based modeling to assess complex environmental systems. It integrates ecology, anthropology, and...

423

Position Management  

Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

The order prescribes the policies, responsibilities, and procedures for position management within (DOE). Canceled by DOE N 1321.140. Cancels DOE 3510.1

1992-06-23T23:59:59.000Z

424

MANAGEMENT (MNG)  

Broader source: Energy.gov (indexed) [DOE]

and recommendations is adequately implemented. (DOE Order 414.1A, Criterion 3; 10 CFR 830, Subpart A) Approach Record Review * Review the SWS issues management systems and...

425

Surreptitious Lead Exposure from an Asian Indian Medication  

Science Journals Connector (OSTI)

......case-report Case Report Surreptitious Lead Exposure from an...during routine biological monitoring for lead exposure conducted...the general public. Surreptitious lead exposure from an...during routine biological monitoring for lead exposure conducted......

Leon A. Saryan

1991-01-01T23:59:59.000Z

426

PRELIMINARY REPORT: EFFECTS OF IRRADIATION AND THERMAL EXPOSURE ON ELASTOMERIC SEALS FOR CASK TRANSPORTATION AND STORAGE  

SciTech Connect (OSTI)

A testing and analysis approach to predict the sealing behavior of elastomeric seal materials in dry storage casks and evaluate their ability to maintain a seal under thermal and radiation exposure conditions of extended storage and beyond was developed, and initial tests have been conducted. The initial tests evaluate the aging response of EPDM elastomer O-ring seals. The thermal and radiation exposure conditions of the CASTOR® V/21 casks were selected for testing as this cask design is of interest due to its widespread use, and close proximity of the seals to the fuel compared to other cask designs leading to a relatively high temperature and dose under storage conditions. A novel test fixture was developed to enable compression stress relaxation measurements for the seal material at the thermal and radiation exposure conditions. A loss of compression stress of 90% is suggested as the threshold at which sealing ability of an elastomeric seal would be lost. Previous studies have shown this value to be conservative to actual leakage failure for most aging conditions. These initial results indicate that the seal would be expected to retain sealing ability throughout extended storage at the cask design conditions, though longer exposure times are needed to validate this assumption. The high constant dose rate used in the testing is not prototypic of the decreasingly low dose rate that would occur under extended storage. The primary degradation mechanism of oxidation of polymeric compounds is highly dependent on temperature and time of exposure, and with radiation expected to exacerbate the oxidation.

Verst, C.; Skidmore, E.; Daugherty, W.

2014-05-30T23:59:59.000Z

427

Solar UV Radiation and Cancer in Young Children  

Science Journals Connector (OSTI)

...Boscoe FP , Schymura MJ.Solar ultraviolet-B exposure and...due to inadequate doses of solar ultraviolet-B radiation...Garland CF.The association of solar ultraviolet B (UVB) with reducing...Increased skin pigment reduces the capacity of skin to synthesise vitamin...

Christina Lombardi; Julia E. Heck; Myles Cockburn; and Beate Ritz

2013-06-01T23:59:59.000Z

428

INSTITUTE OF NUCLEAR ENERGY RADIATION ANNUAL REPORT 2003  

E-Print Network [OSTI]

Dynamic reliability of Complex System & decision Analysis I. Papazoglou Occupational Risk Assessment I PHYSICS OF THE REACTOR I. Stamatelatos Exposure of the Population to Ionizing Radiations of the Enironment LABORATORY G. Pantelias Operation & Maintenance of Research Reactor M. Stakakis Nuclear Analytical Techniques

429

Hazard of intermittent noise exposures  

Science Journals Connector (OSTI)

The chief shortcoming of the “equal energy” hypothesis—the notion that equal products of time and intensity provide equal hazard—is that the recuperative powers of the auditory system are essentially ignored. A single sustained stimulus is regarded as no more dangerous than an intermittent one of the same total energy. A two?year study of the effect of intermittency on the TTS produced in normal young adults by 6? or 8?h exposures to octave bands of noise whose center frequencies ranged from 250 to 4000 Hz indicates that even for the most hazardous noise (the 4000?Hz OB) cutting the cumulative exposure time in half by interjecting regular quiet periods will permit an increase in level of 5 dB for constant TTS at least up to about 100 dB SPL. At 1000 Hz the trading relation is 6–7 dB for halving time and at 250 Hz is even greater. Thus the 5?dBA?per?halving?time relation employed by the present OSHA standard is essentially correct for intermittent noise except perhaps above 100 to 105 dBA where the equal?energy hypothesis may be more appropriate for spectra with high?frequency dominance. A single 5?dBA “correction for intermittency” is an oversimplification. [Research supported by the National Institute for Occupational Safety and Health Public Health Service.

W. D. Ward

1974-01-01T23:59:59.000Z

430

Use and workload factors in dental radiation-protection design  

SciTech Connect (OSTI)

A dosimetric and photographic record of the pattern of radiation on the walls of a dental x-ray operatory was obtained. This indicates that there is an overlap of the radiation fields with ''hot spots'' on the side wall opposite the patient's head, with the rest of the room receiving minimal exposures. In the course of this investigation, it was found that use of the long-cone x-ray machine resulted in less radiation reaching the walls of the room. The presently accepted concept of mAs per week proves to be less relevant than the number of films being taken.

Reid, J.A.; MacDonald, J.C.

1984-02-01T23:59:59.000Z

431

Space Radiation and Cataracts (LBNL Summer Lecture Series)  

ScienceCinema (OSTI)

Summer Lecture Series 2009: Eleanor Blakely, radiation biologist of the Life Sciences Division at Lawrence Berkeley National Laboratory, has been a scientist at Berkeley Lab since 1975. She is studying the effect of radiation on cataracts which concerns not only cancer patients, but also astronauts. As astronauts spend increasingly longer time in space, the effects of cosmic radiation exposure will become an increasingly important health issue- yet there is little human data on these effects. Blakely reviews this emerging field and the contributions made at Berkeley Lab

Blakely, Eleanor

2011-04-28T23:59:59.000Z

432

radiation.p65  

Office of Legacy Management (LM)

5 5 United States Department of Energy This fact sheet explains the potential health hazards associated with the radioactive decay of uranium and other radioactive elements found in ore and mill tailings. Potential Health Hazards of Radiation Man-made sources of radiation, most notably from medical uses and consumer products, contribute to the remaining radiation dose that individuals receive. A few household products, including smoke detectors, micro- wave ovens, and color televisions, emit small amounts of radiation. For most people, the benefits from using such products far outweigh the radiation risks. Radiation Dose Radiation is measured in various units. Individuals who have been exposed to radiation have received a radiation dose. Radiation dose to people is expressed in

433

Reassessing Radon in Drinking Water: Searching for Perspective on Radiation  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Reassessing Radon in Drinking Water: Searching for Perspective on Radiation Reassessing Radon in Drinking Water: Searching for Perspective on Radiation Risks Speaker(s): Richard Sextro Date: October 27, 1998 - 12:00pm Location: 90-3148 Although most of the exposures to radon and its radioactive decay products arise from indoor airborne radon originating in the soil adjacent to buildings, some contact with radon can occur due to its presence in drinking water. The exposures and health risks associated with radon dissolved in drinking water are typically much smaller, although the magnitude of the exposures and risks have been uncertain and the subject of some controversy. The 1996 Amendments to the (U.S.) Safe Drinking Water Act required the U.S. Environmental Protection Agency to contract with the U.S. National Academy of Sciences (NAS) to re-evaluate the risks associated with

434

Low Dose Radiation Research Program: National Laboratories  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

National Laboratories National Laboratories The Low Dose Radiation Program funding encompasses several Scientific Focus Areas (SFAs). The SFAs fund merit-reviewed research at DOE national laboratories. This management approach was created in 2008 by the Office of Biological and Environmental Research (BER) within the U.S. Department of Energy's (DOE's) Office of Science. PNNL's Low Dose Radiation Research Program Scientific Focus Area Linear and Nonlinear Tissue-Signaling Mechanisms in Response to Low Dose and Low Dose-Rate Radiation This program is funded as a U.S. Department of Energy Scientific Focus Area (SFA), and is an integrated cooperative program to understand low dose radiation effects in a complex model system. Coordinating Multidisciplinary Expertise The SFAs are designed to take advantage of the multidisciplinary,

435

Integrating Human Indoor Air Pollutant Exposure within Life Cycle Impact Assessment  

Science Journals Connector (OSTI)

This paper summarizes the work of an international expert group on the integration of human indoor and outdoor exposure in LCA, within the UNEP/SETAC Life Cycle Initiative. ... In a later stage, indoor exposure to radioactive gases such as radon can also be incorporated within the impact category “radiation” in LCIA methods such as Eco-Indicator 99, similarly to the framework shown in this paper. ... The work for this project was carried out on a voluntary basis and financed by in-kind contributions from the home institutions of the authors and scientists mentioned above, which are therefore gratefully acknowledged. ...

Stefanie Hellweg; Evangelia Demou; Raffaella Bruzzi; Arjen Meijer; Ralph K. Rosenbaum; Mark A. J. Huijbregts; Thomas E. McKone

2009-02-06T23:59:59.000Z

436

Out-of-band exposure characterization with the SEMATECH Berkeley 0.3-NA microfield exposure tool  

SciTech Connect (OSTI)

For the commercialization of extreme ultraviolet lithography (EUVL), discharge or laser produced, pulsed plasma light sources are being considered. These sources are known to emit into a broad range of wavelengths that are collectively referred to as the out-of-band (OOB) radiation by lithographers. Multilayer EUV optics reflect OOB radiation emitted by the EUV sources onto the wafer plane resulting in unwanted background exposure of the resist (flare) and reduced image contrast. The reflectivity of multilayer optics at the target wavelength of 13.5 nm is comparable to that of their reflectivity in the deep ultraviolet (DUV) and UV regions from 100-350 nm. The aromatic molecular backbones of many of the resists used for EUV are equally absorptive at specific DUV wavelengths as well. In order to study the effect of these wavelengths on imaging performance in a real system, we are in the process of integrating a DUV source into the SEMATECH Berkeley 0.3-NA Microfield Exposure Tool (MET). The MET plays an active role in advanced research in resist and mask development for EUVL and as such, we will utilize this system to systematically evaluate the imaging impact of DUV wavelengths in a EUV system. In this paper, we present the optical design for the new DUV component and the simulation-based imaging results predicting the potential impact of OOB based on known resist, mask, and multilayer conditions. It should be noted that because the projection optics work equally well as imaging optics at DUV wavelengths, the OOB radiation cannot be treated simply as uniform background or DC flare.

George, Simi A.; Nauleau, Patrick; Rekawa, Senajith; Gullikson, Eric; Kemp, Charles D.

2009-02-23T23:59:59.000Z

437

Health effects of low-level radiation in shipyard workers. Final report: [Draft  

SciTech Connect (OSTI)

The Nuclear Shipyard Workers Study (NSWS) was designed to determine whether there is an excess risk of leukemia or other cancers associated with exposure to low levels of gamma radiation. The study compares the mortality experience of shipyard workers who qualified to work in radiation areas to the mortality of similar workers who hold the same types of jobs but who are not authorized to work in radiation areas. The population consists of workers from six government and two private shipyards.

Matanoski, G.M.

1991-06-01T23:59:59.000Z

438

DEACTIVATION MANAGEMENT  

Broader source: Energy.gov (indexed) [DOE]

MANAGEMENT MANAGEMENT The purpose here is to provide information for specific aspects of project management that apply to deactivation. Overall management of deactivation projects should use a traditional project management approach, and as such is not addressed. The following specific topics are based on lessons learned during deactivation of DOE facilities.  The Deactivation Mission  The Stabilization/Deactivation "Customer"  Project Approach for a Complex Facility  Establishing the Overall End-State  Viewing Deactivation in Two Phases  Early Decisions  Early Deactivation Tasks  Facility-Specific Commitments  Hazard Reduction  Detailed End-Points  Set Up Method and Criteria  Post-Deactivation S&M Plan

439

PET/CT-guided Interventions: Personnel Radiation Dose  

SciTech Connect (OSTI)

PurposeTo quantify radiation exposure to the primary operator and staff during PET/CT-guided interventional procedures.MethodsIn this prospective study, 12 patients underwent PET/CT-guided interventions over a 6 month period. Radiation exposure was measured for the primary operator, the radiology technologist, and the nurse anesthetist by means of optically stimulated luminescence dosimeters. Radiation exposure was correlated with the procedure time and the use of in-room image guidance (CT fluoroscopy or ultrasound).ResultsThe median effective dose was 0.02 (range 0-0.13) mSv for the primary operator, 0.01 (range 0-0.05) mSv for the nurse anesthetist, and 0.02 (range 0-0.05) mSv for the radiology technologist. The median extremity dose equivalent for the operator was 0.05 (range 0-0.62) mSv. Radiation exposure correlated with procedure duration and with the use of in-room image guidance. The median operator effective dose for the procedure was 0.015 mSv when conventional biopsy mode CT was used, compared to 0.06 mSv for in-room image guidance, although this did not achieve statistical significance as a result of the small sample size (p = 0.06).ConclusionThe operator dose from PET/CT-guided procedures is not significantly different than typical doses from fluoroscopically guided procedures. The major determinant of radiation exposure to the operator from PET/CT-guided interventional procedures is time spent in close proximity to the patient.

Ryan, E. Ronan, E-mail: ronan@ronanryan.com; Thornton, Raymond; Sofocleous, Constantinos T.; Erinjeri, Joseph P. [Memorial Sloan-Kettering Cancer Center, Department of Radiology (United States); Hsu, Meier [Memorial Sloan-Kettering Cancer Center, Department of Epidemiology and Biostatistics (United States); Quinn, Brian; Dauer, Lawrence T. [Memorial Sloan-Kettering Cancer Center, Department of Medical Physics (United States); Solomon, Stephen B. [Memorial Sloan-Kettering Cancer Center, Department of Radiology (United States)

2013-08-01T23:59:59.000Z

440

BachelorofManagement InternationalManagement  

E-Print Network [OSTI]

on the official transcript (see Part 11 - Faculty of Management in the 2007/2008 Calendar). Program Planning Guide Management 3050/Political Science 3420 - Human Resource Management Management 3061 - Information Systems Environment Management 3640 - Cross-Cultural Management Practices Management 3660/Geography 3225 - Industrial

Seldin, Jonathan P.

Note: This page contains sample records for the topic "radiation exposure managing" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


441

Y-12 Uranium Exposure Study  

SciTech Connect (OSTI)

Following the recent restart of operations at the Y-12 Plant, the Radiological Control Organization (RCO) observed that the enriched uranium exposures appeared to involve insoluble rather than soluble uranium that presumably characterized most earlier Y-12 operations. These observations necessitated changes in the bioassay program, particularly the need for routine fecal sampling. In addition, it was not reasonable to interpret the bioassay data using metabolic parameter values established during earlier Y-12 operations. Thus, the recent urinary and fecal bioassay data were interpreted using the default guidance in Publication 54 of the International Commission on Radiological Protection (ICRP); that is, inhalation of Class Y uranium with an activity median aerodynamic diameter (AMAD) of 1 {micro}m. Faced with apparently new workplace conditions, these actions were appropriate and ensured a cautionary approach to worker protection. As additional bioassay data were accumulated, it became apparent that the data were not consistent with Publication 54. Therefore, this study was undertaken to examine the situation.

Eckerman, K.F.; Kerr, G.D.

1999-08-05T23:59:59.000Z

442

Sodium orthovanadate (vanadate), a potent mitigator of radiation-induced damage to the hematopoietic system in mice  

Science Journals Connector (OSTI)

......laboratories, military units and nuclear power plants. Uncontrolled exposure to radiation from nuclear accidents or potential terrorism incidents will present...on the radiobiology of nuclear terrorism. Molecular and cellular......

Bing Wang; Kaoru Tanaka; Akinori Morita; Yasuharu Ninomiya; Kouichi Maruyama; Kazuko Fujita; Yoshio Hosoi; Mitsuru Nenoi

2013-07-01T23:59:59.000Z

443

Radiation Protection and Safety Training | Environmental Radiation...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

The objective of this course is to provide students with an introduction to the fundamentals of ionizing radiation protection and safety. The course curriculum combines...

444

Atmospheric Radiation Measurement Radiative Atmospheric Divergence...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

radiation emitted by the earth. This instrument is onboard a European Union geostationary weather satellite launched in December 2005; it is collecting data over Niamey and the...

445

ORISE: Advanced Radiation Medicine | REAC/TS Continuing Medical Education  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Advanced Radiation Medicine Advanced Radiation Medicine Dates Scheduled Register Online March 24-28, 2014 August 18-22, 2014 Fee: $250 Maximum enrollment: 28 30 hours AMA PRA Category 1 Credits(tm) This 4½-day course includes more advanced information for medical practitioners. This program is academically more rigorous than the Radiation Emergency Medicine course and is primarily for Physicians, Clinical Nurse Practitioners and Physician Assistants desiring an advanced level of information on the diagnosis and management of ionizing radiation injuries and illnesses. Advanced topics in the diagnosis and management of radiation-induced injuries and illnesses includes the use of cytokines, stem cell transplants, antimicrobials, wound care and other advanced techniques. Group problem-solving is used to thoroughly orient attendees to the

446

Ionizing radiation and atherosclerosis: Current knowledge and future challenges  

Science Journals Connector (OSTI)

Abstract The evaluation of the health effects of low-dose ionizing radiation has always been a focus of debate and investigation within the scientific community. During the last decade, epidemiological studies provided evidence that an excess risk of cardiovascular diseases (CVDs) can be associated with moderate and low dose radiation. The precise quantification of CVD risk in the low-dose radiation range (dose below which there is no risk. A limited number of studies with imaging surrogate endpoints and cardiovascular biomarkers in asymptomatic patients revealed early signs of cardiovascular alterations, even at a low dose. In vitro studies have shown that several mechanisms, including endothelial dysfunction, inflammation, oxidative stress, alterations of coagulation and platelet activity may have a relevant role in radiation-induced cardiovascular effects. Exposure to high-dose data in experimental models accelerates the development of atherosclerosis, predisposing to the formation of an inflammatory, thrombotic plaque phenotype, especially in animals that are genetically predisposed to this disease. On the contrary, low dose exposure produced both protective and detrimental effects, suggesting that multiple mechanisms may influence radiation-induced atherosclerosis. However, only very limited and specific information can be obtained from cell cultures and animal models. Planned studies of radiation-exposed cohorts need to be conducted to explore biological mechanisms of low-dose radiation-associated cardiovascular disease. Further investigations with functional imaging to assess vascular function and cardiovascular biomarkers have great potential for providing new insights into low-dose radiation cardiovascular risk, especially in occupational exposure and modern medicine.

Andrea Borghini; Emilio Antonio Luca Gianicolo; Eugenio Picano; Maria Grazia Andreassi

2013-01-01T23:59:59.000Z

447

EFFECTS OF TRITIUM GAS EXPOSURE ON ELECTRICALLY CONDUCTING POLYMERS  

SciTech Connect (OSTI)

Effects of beta (tritium) and gamma irradiation on the surface electrical conductivity of two types of conducting polymer films are documented to determine their potential use as a sensing and surveillance device for the tritium facility. It was shown that surface conductivity was significantly reduced by irradiation with both gamma and tritium gas. In order to compare the results from the two radiation sources, an approximate dose equivalence was calculated. The materials were also sensitive to small radiation doses (<10{sup 5} rad), showing that there is a measurable response to relatively small total doses of tritium gas. Spectroscopy was also used to confirm the mechanism by which this sensing device would operate in order to calibrate this sensor for potential use. It was determined that one material (polyaniline) was very sensitive to oxidation while the other material (PEDOT-PSS) was not. However, polyaniline provided the best response as a sensing material, and it is suggested that an oxygen-impermeable, radiation-transparent coating be applied to this material for future device prototype fabrication. A great deal of interest has developed in recent years in the area of conducting polymers due to the high levels of conductivity that can be achieved, some comparable to that of metals [Gerard 2002]. Additionally, the desirable physical and chemical properties of a polymer are retained and can be exploited for various applications, including light emitting diodes (LED), anti-static packaging, electronic coatings, and sensors. The electron transfer mechanism is generally accepted as one of electron 'hopping' through delocalized electrons in the conjugated backbone, although other mechanisms have been proposed based on the type of polymer and dopant [Inzelt 2000, Gerard 2002]. The conducting polymer polyaniline (PANi) is of particular interest because there are extensive studies on the modulation of the conductivity by changing either the oxidation state of the main backbone chain, or by protonation of the imine groups [de Acevedo, 1999]. There are several types of radiation sensors commercially available, including ionization chambers, geiger counters, proportional counters, scintillators and solid state detectors. Each type has advantages, although many of these sensors require expensive electronics for signal amplification, are large and bulky, have limited battery life or require expensive materials for fabrication. A radiation sensor constructed of a polymeric material could be flexible, light, and the geometry designed to suit the application. Very simple and inexpensive electronics would be necessary to measure the change in conductivity with exposure to radiation and provide an alarm system when a set change of conductivity occurs in the sensor that corresponds to a predetermined radiation dose having been absorbed by the polymer. The advantages of using a polymeric sensor of this type rather than those currently in use are the flexibility of sensor geometry and relatively low cost. It is anticipated that these sensors can be made small enough for glovebox applications or have the ability to monitor the air tritium levels in places where a traditional monitor cannot be placed. There have been a few studies on the changes in conductivity of polyaniline specifically for radiation detection [de Acevedo, 1999; Lima Pacheco, 2003], but there have been no reports on the effects of tritium (beta radiation) on conducting polymers, such as polyaniline or polythiophene. The direct implementation of conducting polymers as radiation sensor materials has not yet been commercialized due to differing responses with total dose, dose rate, etc. Some have reported a large increase in the surface conductivity with radiation dose while others report a marked decrease in conductive properties; these differing observations may reflect the competing mechanisms of chain scission and cross-linking. However, it is clear that the radiation dose effects on conducting polymers must be fully understood before these materials can be used

Kane, M.; Clark, E.; Lascola, R.

2009-12-16T23:59:59.000Z

448

Molecular Mechanism Underlying Cellular Adaptive Response to Low Dose Radiation  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Mechanism Underlying Cellular Adaptive Response to Low Dose Radiation Mechanism Underlying Cellular Adaptive Response to Low Dose Radiation Colette A. Sacksteder § , DJ Black ‡ , Heather Smallwood § , David G. Camp II † , and Thomas C. Squier § § Cell Biology and Biochemistry; † Biological Sciences Division Pacific Northwest National Laboratory, Richland WA 99352 ‡ School of Biological Sciences, University of Missouri, Kansas City MO 64110 The goal of this research is to identify the molecular mechanisms by which cells adapt to low dose radiation exposure. Previously we have shown a radiation dependent increase of Calmodulin (CaM) in RAW 264.7 macrophages (RAW). Therefore we hypothesize that CaM and associated signaling complexes are sensors of low-dose radiation, resulting in alterations in energy metabolism and gene expression. The ultimate experimental goal

449

Resistance of Bacillus subtilis Spore DNA to Lethal Ionizing Radiation Damage Relies Primarily on Spore Core Components and DNA Repair, with Minor Effects of Oxygen Radical Detoxification  

Science Journals Connector (OSTI)

...samples for radiation exposure has...different types of ionizing radiation: X rays...mum, and a range of 301 mm in...mum, and a range of 99 mm in...dosimetry, and dose calculations...the dose of ionizing radiation killing 90...

Ralf Moeller; Marina Raguse; Günther Reitz; Ryuichi Okayasu; Zuofeng Li; Stuart Klein; Peter Setlow; Wayne L. Nicholson

2013-10-11T23:59:59.000Z

450

Federal risk management policy: Where are the problems?  

SciTech Connect (OSTI)

Federal risk management policy involves both risk assessment and risk management elements. Risk assessments consists of hazard identification, dose-response assessment, exposure assessment, and risk characterization. Risk management, on the other hand, involves making policy decisions based on risk assessment results and social, economic, and political factors. These remarks summarize the role of risk assessment and risk management in the regulatory, judicial, and legislative arenas. They then focus on the new direction for risk assessment policy as the government and industry grapple with risk management issues.

Thompson, A.J. [Shaw, Pittman, Potts, and Trowbridge, Washington, DC (United States)

1994-12-31T23:59:59.000Z

451

Plutonium radiation surrogate  

DOE Patents [OSTI]

A self-contained source of gamma-ray and neutron radiation suitable for use as a radiation surrogate for weapons-grade plutonium is described. The source generates a radiation spectrum similar to that of weapons-grade plutonium at 5% energy resolution between 59 and 2614 keV, but contains no special nuclear material and emits little .alpha.-particle radiation. The weapons-grade plutonium radiation surrogate also emits neutrons having fluxes commensurate with the gamma-radiation intensities employed.

Frank, Michael I. (Dublin, CA)

2010-02-02T23:59:59.000Z

452

Management Overview  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Immobilization Research Immobilization Research Kurt Gerdes U.S. DOE, Office of Engineering and Technology John Vienna Pacific Northwest National Laboratory Environmental Management May 19, 2009 2009 Hanford - Idaho - Savannah River Technical Exchange 2 Objectives Perform research and development to advance the waste stabilization technology options by through closely- coupled theory, experimentation, and modeling Develop solutions for Hanford, Idaho, Savannah River, and Oak Ridge wastes challenges (along with facilitating management of future wastes) Environmental Management General Approach Balance between near-term incremental technology improvements and long-term transformational solutions Address the requirements for high risk waste streams - high-level tank waste (RPP, SRS)

453

The EMDEX (Electric and Magnetic Field Digital Exposure) Project: Technology transfer and occupational measurements  

SciTech Connect (OSTI)

The Electric and Magnetic Field Measurement Project for Utilities -- the EPRI EMDEX Project -- is a multifaceted project entailing technology transfer, measurement protocol design, data management, and exposure assessment analyses. The specific objectives of the project in order to priority were: (1) to transfer the EMDEX technology to utilities; (2) to develop measurement protocols and data management capabilities for large exposure data sets; and (3) to collect, analyze, and document 60-Hz electric and magnetic field exposures for a diverse population. Transfer of the EPRI Electric and Magnetic Field Digital Exposure system (EMDEX) technology to the participating utilities was accomplished through training and through extensive involvement in the exposure data collection effort. Documentation of the EMDEX Project is contained in three volumes: Volume 1 summarizes the methods and results, and provides an assessment of project objectives; Volume 2 provides detailed descriptions of methods, procedures, protocols, materials and analyses, and Volume 3 contains appendices with a complete set of project protocols, project materials, and extensive data tables. 12 refs., 27 figs., 23 tabs.

Not Available

1990-11-01T23:59:59.000Z

454

The economics of nuclear decontamination: assessing policy options for the management of land around Fukushima dai-ichi  

Science Journals Connector (OSTI)

Abstract In the light of the Japanese government's intensive efforts to decontaminate areas affected by radioactive Caesium from Fukushima dai-ichi nuclear power plant, I create a framework for assessing the merits of management options. In particular I consider delayed intervention as a possible policy. Delay can be optimal because allowing the natural decay of radiation can lower significantly the costs of achieving targets for exposure. Using some benchmark data for Japan I estimate that optimal delay is positive for most reasonable parameter values. Optimal delay generally lies in the range of 3–10 years with a central figure of 8.8 years. There is however considerable uncertainty over some of the key parameter values, particularly with regard to the behaviour of currently evacuated inhabitants.

Alistair Munro

2013-01-01T23:59:59.000Z

455

ESTIMATION OF THE RESPIRATORY TRACT BURDEN RESULTING FROM A PROLONGED INHALATION EXPOSURE TO AEROSOLS OF DU, BASED ON THE U IN A 24-H URINE SAMPLE TAKEN YEARS AFTER EXPOSURE  

Science Journals Connector (OSTI)

......of atomic radiation to the general assembly. Annex B-exposures...depleted uranium (DU): a general overview. J. Environ. Radioact...org/info/Nuclear-Fuel-Cycle/Uranium-Resources/Uranium-and-Depleted-Uranium...responses to chronically inhaled diesel exhaust and coal dust in rats......

M. Valdés

2014-03-01T23:59:59.000Z

456

Phase-change radiative thermal diode  

SciTech Connect (OSTI)

A thermal diode transports heat mainly in one preferential direction rather than in the opposite direction. This behavior is generally due to the non-linear dependence of certain physical properties with respect to the temperature. Here we introduce a radiative thermal diode which rectifies heat transport thanks to the phase transitions of materials. Rectification coefficients greater than 70% and up to 90% are shown, even for small temperature differences. This result could have important applications in the development of future contactless thermal circuits or in the conception of radiative coatings for thermal management.

Ben-Abdallah, Philippe, E-mail: pba@institutoptique.fr [Laboratoire Charles Fabry, UMR 8501, Institut d'Optique, CNRS, Université Paris-Sud 11, 2, Avenue Augustin Fresnel, 91127 Palaiseau Cedex (France)] [Laboratoire Charles Fabry, UMR 8501, Institut d'Optique, CNRS, Université Paris-Sud 11, 2, Avenue Augustin Fresnel, 91127 Palaiseau Cedex (France); Biehs, Svend-Age, E-mail: s.age.biehs@uni-oldenburg.de [Institut für Physik, Carl von Ossietzky Universität, D-26111 Oldenburg (Germany)] [Institut für Physik, Carl von Ossietzky Universität, D-26111 Oldenburg (Germany)

2013-11-04T23:59:59.000Z

457

Design considerations for a ceramic fabric radiator  

SciTech Connect (OSTI)

The design of an Advanced Ceramic Fabric (ACF) thermal management device for use in both interplanetary and near-earth space must consider several important aspects of the environment. First, the radiation field at various locations is dominated by a proton component which deposits its energy on the surface of the device. Second, the ACF materials, as well as pressure liner materials, must also be compatible with the working fluids selected for the system. Third, the fluid dynamics and heat transfer characteristics of this device should be adequately characterized. With the proper consideration of materials and operating conditions, the Bubble Membrane Radiator (BMR) may be utilized for several advanced space missions. 17 refs.

Pauley, K.A.; Webb, B.J. (Pacific Northwest Lab., Richland, WA (USA)); Klein, A.C. (Oregon State Univ., Corvallis, OR (USA). Dept. of Nuclear Engineering)

1990-04-01T23:59:59.000Z

458

Molecular mechanisms and cellular consequences of low-dose exposure to ionizing  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

mechanisms and cellular consequences of low-dose exposure to ionizing mechanisms and cellular consequences of low-dose exposure to ionizing radiation Andrew J. Wyrobek 1 , Francesco Marchetti 1 , Xiu Lowe 1 , Xiaochen Lu 2 , Terumi Kohwi- Shigematsu 1 , Brian Davy 1 , Thomas E. Schmid 1 , Sylvia Ahn 1 , Tarlochan Nijjar 1 Matthew A. Coleman 2 , Contact information: ajwyrobek@gmail.com 1 Life Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 2 BioSciences Directorate, Lawrence Livermore National Laboratory, Livermore, CA. The objectives of this research are to characterize the genome-wide molecular responses to low-dose ionizing radiation (<10cGy), to identify tissue and cell-type specific differences in pathways responses, and to identify the pivotal molecular pathway responses that control risks to genome integrity and health. This project utilizes mouse in

459

ALLIANCE MANAGEMENT  

Science Journals Connector (OSTI)

In the last two decades, production and manufacturing management has rapidly adopted a range of new concepts: manufacturing strategy, focused factory, just-in-time manufacturing, concurrent engineering, total ...

2000-01-01T23:59:59.000Z

460

Radiator Labs | Department of Energy  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

of steam buildings. Radiator Labs developed a mechanism that allows heating systems to control heat transfer at each radiator. The Radiator Labs design utilizes an...

Note: This page contains sample records for the topic "radiation exposure managing" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


461

The universal radiative transport equation  

E-Print Network [OSTI]

THE UNIVERSAL RADIATIVE TRANSPORT EQUATION Rudolph W.The Universal Radiative Transport Equation Rudolph W.The various radiative transport equations used in general

Preisendorfer, Rudolph W

1959-01-01T23:59:59.000Z

462

DarkLight radiation backgrounds  

SciTech Connect (OSTI)

We report measurements of photon and neutron radiation levels observed while transmitting a 0.43 MW electron beam through millimeter-sized apertures and during beam-on, but accelerating gradient RF-on, operation. These measurements were conducted at the Free-Electron Laser (FEL) facility of the Jefferson National Accelerator Laboratory (JLab) using a 100 MeV electron beam from an energy-recovery linear accelerator. The beam was directed successively through 6 mm, 4 mm, and 2 mm diameter apertures of length 127 mm in aluminum at a maximum current of 4.3 mA (430 kW beam power). This study was conducted to characterize radiation levels for experiments that need to operate in this environment, such as the proposed DarkLight Experiment. We find that sustained transmission of a 430 kW CW beam through a 2 mm aperture is feasible with manageable beam-related backgrounds. We also find that during beam-off, RF-on operation, field emission inside the niobium cavities of the accelerator cryomodules is the primary source of ambient radiation.

Kalantarians, N. [Department of Physics, Hampton University, Hampton VA 23668 (United States); Collaboration: DarkLight Collaboration

2013-11-07T23:59:59.000Z

463

DarkLight radiation backgrounds  

SciTech Connect (OSTI)

We report measurements of photon and neutron radiation levels observed while transmitting a 0.43 MW electron beam through millimeter-sized apertures and during beam-on, but accelerating gradient RF-on, operation. These measurements were conducted at the Free-Electron Laser (FEL) facility of the Jefferson National Accelerator Laboratory (JLab) using a 100 MeV electron beam from an energy-recovery linear accelerator. The beam was directed successively through 6 mm, 4 mm, and 2 mm diameter apertures of length 127 mm in aluminum at a maximum current of 4.3 mA (430 kW beam power). This study was conducted to characterize radiation levels for experiments that need to operate in this environment, such as the proposed DarkLight Experiment. We find that sustained transmission of a 430 kW CW beam through a 2 mm aperture is feasible with manageable beam-related backgrounds. We also find that during beam-off, RF-on operation, field emission inside the niobium cavities of the accelerator cryomodules is the primary source of ambient radiation.

Kalantarians, Narbe [University of Texas

2013-11-01T23:59:59.000Z

464

Exposure assessment in ergonomic epidemiology Is there something specific to the assessment of biomechanical exposures?  

E-Print Network [OSTI]

Exposure assessment in ergonomic epidemiology Is there something specific to the assessment.leclerc@st-maurice.inserm.fr Key words : ergonomics, work, exposure, cancer In this issue of the Journal the authors of two articles in "ergonomic epidemiology" stress several necessary qualities of exposure data: they must

Paris-Sud XI, Université de

465

A Paired, Double-Blind, Randomized Comparison of a Moisturizing Durable Barrier Cream to 10% Glycerine Cream in the Prophylactic Management of Postmastectomy Irradiation Skin Care: Trans Tasman Radiation Oncology Group (TROG) 04.01  

SciTech Connect (OSTI)

Purpose: A previous, unblinded study demonstrated that an alcohol-free barrier film containing an acrylate terpolymer (ATP) was effective in reducing skin reactions compared with a 10% glycerine cream (sorbolene). The different appearances of these products precluded a blinded comparison. To test the acrylate terpolymer principle in a double-blinded manner required the use of an alternative cream formulation, a moisturizing durable barrier cream (MDBC); the study was conducted by the Trans Tasman Radiation Oncology Group (TROG) as protocol 04.01. Methods and Materials: A total of 333 patients were randomized; 1 patient was ineligible and 14 patients withdrew or had less than 7 weeks' observations, leaving 318 for analysis. The chest wall was divided into medial and lateral compartments, and patients were randomized to have MDBC applied daily to the medial or lateral compartment and sorbolene to the other compartment. Weekly observations, photographs, and symptom scores (pain and pruritus) were collected to week 12 or resolution of skin reactions if earlier. Skin dose was confirmed by centrally calibrated thermoluminescent dosimeters. Results: Rates of medial and lateral compartment Common Toxicity Criteria (CTC), version 3, greater than or equal to grade 3 skin reactions were 23% and 41%, but rates by skin care product were identical at 32%. There was no significant difference between MDBC and sorbolene in the primary endpoint of peak skin reactions or secondary endpoints of area-under-the-curve skin reaction scores. Conclusions: The MDBC did not reduce the peak skin reaction compared to sorbolene. It is possible that this is related to the difference in the formulation of the cream compared with the film formulation. Skin dosimetry verification and double blinding are essential for radiation skin care comparative studies.

Graham, Peter H., E-mail: peter.graham@sesiahs.health.nsw.gov.au [Cancer Care Centre, St. George Hospital, Kogarah, New South Wales (Australia); Plant, Natalie; Graham, Jennifer L.; Browne, Lois [Cancer Care Centre, St. George Hospital, Kogarah, New South Wales (Australia)] [Cancer Care Centre, St. George Hospital, Kogarah, New South Wales (Australia); Borg, Martin [Department of Radiation Oncology, Royal Adelaide Hospital (Australia)] [Department of Radiation Oncology, Royal Adelaide Hospital (Australia); Capp, Anne [Department of Radiation Oncology, Mater Hospital, Newcastle, New South Wales (Australia)] [Department of Radiation Oncology, Mater Hospital, Newcastle, New South Wales (Australia); Delaney, Geoff P. [Cancer Care Centre, Liverpool Hospital, Liverpool, New South Wales (Australia)] [Cancer Care Centre, Liverpool Hospital, Liverpool, New South Wales (Australia); Harvey, Jennifer [Mater Hospital, South Brisbane, Queensland (Australia)] [Mater Hospital, South Brisbane, Queensland (Australia); Kenny, Lisbeth [Royal Brisbane Hospital, Herston, Queensland (Australia)] [Royal Brisbane Hospital, Herston, Queensland (Australia); Francis, Michael [Andrew Love Cancer Centre, Geelong (Australia)] [Andrew Love Cancer Centre, Geelong (Australia); Zissiadis, Yvonne [Department of Radiation Oncology, Royal Perth Hospital, Perth (Australia)] [Department of Radiation Oncology, Royal Perth Hospital, Perth (Australia)

2013-05-01T23:59:59.000Z

466

Overlay compatibility between two synchroton radiation steppers  

Science Journals Connector (OSTI)

A total overlay accuracy of less than 35 nm was obtained with two synchrotron radiation (SR) x-ray steppers developed by NTT and ASET. This value includes the pattern placement errors of two masks errors due to the wafer etching process and errors of two steppers that arise in exposure. The error factors affecting the overlay compatibility among SR x-ray steppers were analyzed using double-exposure experiments. The results show that the overlay error induced by the difference in runout between the two steppers was negligibly small and that the magnification change from shot to shot was caused by gap setting variations between the two steppers. These results demonstrate that a SR x-ray stepper can provide sufficient overlay compatibility for the 100 nm technical node and beyond.

Makoto Fukuda; Masanori Suzuki; Tsuneyuki Haga; Hirofumi Morita; Hajime Aoyama; Souichirou Mitsui; Takao Taguchi; Yasuji Matsui

2000-01-01T23:59:59.000Z

467

RADIATION EFFECTS ON EPOXY CARBON FIBER COMPOSITE  

SciTech Connect (OSTI)

Carbon fiber-reinforced bisphenol-A epoxy matrix composite was evaluated for gamma radiation resistance. The composite was exposed to total gamma doses of 50, 100, and 200 Mrad. Irradiated and baseline samples were tested for tensile strength, hardness and evaluated using FTIR (Fourier transform infrared) spectroscopy and DSC (differential scanning calorimetry) for structural changes. Scanning electron microscopy was used to evaluate microstructural behavior. Mechanical testing of the composite bars revealed no apparent change in modulus, strain to failure, or fracture strength after exposures. However, testing of only the epoxy matrix revealed changes in hardness, thermal properties, and FTIR results with increasing gamma irradiation. The results suggest the epoxy within the composite can be affected by exposure to gamma irradiation.

Hoffman, E

2008-05-30T23:59:59.000Z

468

Stormwater Management  

E-Print Network [OSTI]

management program must be developed that would meet the standard of reducing pollutants to the maximum extent practicable. Stormwater management programs for medium and large MS4s include measures to: ? Identify major outfalls and pollutant loadings... seeding: The vegetation used will be part of final landscaping, but during construction it prevents soil erosion. ? Mulching: Materials such as hay, grass, woodchips, gravel, or straw are placed on top of the soil to keep it from eroding. Structural...

Jaber, Fouad

2008-10-23T23:59:59.000Z

469

Exposure Control Plan Bloodborne Pathogen Program  

E-Print Network [OSTI]

) will review and revise the Plan annually in accordance with the current OSHA BBP Standard. 2. OCCUPATIONAL. The Standard requires employers to develop and implement a written Exposure Control Plan (the "Plan"). The Plan provisions of the Standard. The Exposure Control Plan is contained in the Laboratory Safety Manual

Natelson, Douglas

470

Environmental Health Formaldehyde Exposure in Homes  

E-Print Network [OSTI]

Environmental Health Formaldehyde Exposure in Homes: A Reference for State Officials to Use in Decision-making Background The issue of formaldehyde exposure in homes is long-standing and has been other construction components. In the past, formaldehyde was also used in insulation of many homes

471

Radiation Dose Estimates from  

E-Print Network [OSTI]

Summary: Radiation Dose Estimates from Hanford Radioactive Material Releases to the Air- tantly, what radiation dose people may have received. An independent Technical Steering Panel (TSP, additionalProjectworkcouldresultin revisions of these dose estimates. April 21, 1994 Companion

472

Maryland Radiation Act (Maryland)  

Broader source: Energy.gov [DOE]

The policy of the state is to provide for the constructive use of radiation and control radiation emissions. This legislation authorizes the Department of the Environment to develop comprehensive...

473

Residential Radon Exposure, Histologic Types, and Lung Cancer Risk. A Case–Control Study in Galicia, Spain  

Science Journals Connector (OSTI)

...a federal action plan for saving lives...Radon_Action_Plan.pdf . 6. A citizen's...exposure? A systematic review.Int J Radiat Biol...and American Indian uranium miners: an update...carcinoma in German uranium miners.Cancer 2006...was measured using standard procedures. Results...

Juan Miguel Barros-Dios; Alberto Ruano-Ravina; Mónica Pérez-Ríos; Margarita Castro-Bernárdez; Jose Abal-Arca; and Marta Tojo-Castro

2012-06-01T23:59:59.000Z

474

Residential Radon Exposure, Histologic Types, and Lung Cancer Risk. A Case–Control Study in Galicia, Spain  

Science Journals Connector (OSTI)

...in miners (WISMUT Mining Company) have revealed...Perez-Rios Writing, review, and/or revision...a federal action plan for saving lives...Radon_Action_Plan.pdf . 6. A citizen's...exposure? A systematic review.Int J Radiat Biol...was measured using standard procedures. Results...

Juan Miguel Barros-Dios; Alberto Ruano-Ravina; Mónica Pérez-Ríos; Margarita Castro-Bernárdez; Jose Abal-Arca; and Marta Tojo-Castro

2012-06-01T23:59:59.000Z

475

Estimating exposure of terrestrial wildlife to contaminants  

SciTech Connect (OSTI)

This report describes generalized models for the estimation of contaminant exposure experienced by wildlife on the Oak Ridge Reservation. The primary exposure pathway considered is oral ingestion, e.g. the consumption of contaminated food, water, or soil. Exposure through dermal absorption and inhalation are special cases and are not considered hereIN. Because wildlife mobile and generally consume diverse diets and because environmental contamination is not spatial homogeneous, factors to account for variation in diet, movement, and contaminant distribution have been incorporated into the models. To facilitate the use and application of the models, life history parameters necessary to estimate exposure are summarized for 15 common wildlife species. Finally, to display the application of the models, exposure estimates were calculated for four species using data from a source operable unit on the Oak Ridge Reservation.

Sample, B.E.; Suter, G.W. II

1994-09-01T23:59:59.000Z

476

RADIONUCLIDE RADIATION PROTECTION  

E-Print Network [OSTI]

COPYRIGHT 2002 Nuclear Technology Publishing #12;3 #12;4 #12;5 Radiation Protection Dosimetry Vol. 98, No'Energie Atomique, CEA/Saclay, France ISBN 1 870965 87 6 RADIATION PROTECTION DOSIMETRY Vol. 98 No 1, 2002 Published by Nuclear Technology Publishing #12;RADIONUCLIDE AND RADIATION PROTECTION DATA HANDBOOK 2nd Edition (2002

Healy, Kevin Edward

477

Process for Transition of Uranium Mill Tailings Radiation Control Act Title  

Broader source: Energy.gov (indexed) [DOE]

Uranium Mill Tailings Radiation Control Uranium Mill Tailings Radiation Control Act Title II Disposal Sites to the U.S. Department of Energy Office of Legacy Management for Long-Term Surveillance and Maintenance Process for Transition of Uranium Mill Tailings Radiation Control Act Title II Disposal Sites to the U.S. Department of Energy Office of Legacy Management for Long-Term Surveillance and Maintenance Process for Transition of Uranium Mill Tailings Radiation Control Act Title II Disposal Sites to the U.S. Department of Energy Office of Legacy Management for Long-Term Surveillance and Maintenance (March 2012) Process for Transition of Uranium Mill Tailings Radiation Control Act Title II Disposal Sites to the U.S. Department of Energy Office of Legacy Management for Long-Term Surveillance and Maintenance (March 2012)

478

CRAD, Environmental Radiation Protection - December 7, 2009 | Department of  

Broader source: Energy.gov (indexed) [DOE]

Radiation Protection - December 7, 2009 Radiation Protection - December 7, 2009 CRAD, Environmental Radiation Protection - December 7, 2009 December 7, 2009 Environmental Radiation Protection, Inspection Criteria, Approach, and Lines of Inquiry (HSS CRAD 64-36, Rev. 0) Rvisions to the Inspection Criteria, Approach, and Lines of Inquiry for internal use and also we are making them available for use by DOE line and contractor assessment personnel in developing and implementing effective DOE oversight and contractor self-assessment and corrective action processes. CRAD, Environmental Radiation Protection - December 7, 2009 More Documents & Publications CRAD, Occupational Radiation Protection Program - December 4, 2012 CRAD, Radioactive Waste Management - June 22, 2009 CRAD, Radiological Controls - Los Alamos National Laboratory TA 55 SST

479

Mechanisms Underlying Cellular Responses to Low Doses/Low LET Ionizing Radiation in Primary Haemopoietic Cells.  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Mechanisms Underlying Cellular Responses to Low Doses/Low LET Ionizing Radiation Mechanisms Underlying Cellular Responses to Low Doses/Low LET Ionizing Radiation in Primary Haemopoietic Cells. Munira Kadhim 1 , Stefania Militi 1 , Debbie Bowler 1 , Denise Macdonald 1 and Kevin Prise 2 1 Radiation and Genome Stability Unit, MRC, Harwell, Didcot, Oxon, OX11 0RD, UK 2 Gray Cancer Institute ,PO Box 100, Mount Vernon Hospital, Northwood, HA6 2JR, UK Because the human population is genetically heterogeneous, it is important to understand the role that heterogeneity may play in radiation response. Exposure to ionizing radiation can lead to a suite of changes, including increased mutation rate, delayed reproductive cell death, and delayed chromosomal aberrations, all of which are manifestations of the complex genomic instability (GI) phenotype. Following exposure to either high LET

480

AC field exposure study: human exposure to 60-Hz electric fields  

SciTech Connect (OSTI)

The objective of this study was to develop a method of estimating human exposure to the 60 Hz electric fields created by transmission lines. The Activity Systems Model simulates human activities in a variety of situations where exposure to electric fields is possible. The model combines maps of electric fields, activity maps, and experimentally determined activity factors to provide histograms of time spent in electric fields of various strengths in the course of agricultural, recreational, and domestic activities. For corroboration, the study team measured actual human exposure at locations across the United States near transmission lines ranging in voltage from 115 to 1200 kV. The data were collected with a specially designed vest that measures exposure. These data demonstrate the accuracy of the exposure model presented in this report and revealed that most exposure time is spent in fields of magnitudes similar to many household situations. The report provides annual exposure estimates for human activities near transmission lines and in the home and compares them with exposure data from typical laboratory animal experiments. For one exposure index, the cumulative product of time and electric field, exposure during some of the laboratory animal experiments is two to four orders of magnitude greater than cumulative exposure for a human during one year of outdoor work on a farm crossed by a transmission line.

Silva, J.M.

1985-04-01T23:59:59.000Z

Note: This page contains sample records for the topic "radiation exposure managing" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


481

Developing and evaluating distributions for probabilistic human exposure assessments  

SciTech Connect (OSTI)

This report describes research carried out at the Lawrence Berkeley National Laboratory (LBNL) to assist the U. S. Environmental Protection Agency (EPA) in developing a consistent yet flexible approach for evaluating the inputs to probabilistic risk assessments. The U.S. EPA Office of Emergency and Remedial Response (OERR) recently released Volume 3 Part A of Risk Assessment Guidance for Superfund (RAGS), as an update to the existing two-volume set of RAGS. The update provides policy and technical guidance on performing probabilistic risk assessment (PRA). Consequently, EPA risk managers and decision-makers need to review and evaluate the adequacy of PRAs for supporting regulatory decisions. A critical part of evaluating a PRA is the problem of evaluating or judging the adequacy of input distributions PRA. Although the overarching theme of this report is the need to improve the ease and consistency of the regulatory review process, the specific objectives are presented in two parts. The objective of Part 1 is to develop a consistent yet flexible process for evaluating distributions in a PRA by identifying the critical attributes of an exposure factor distribution and discussing how these attributes relate to the task-specific adequacy of the input. This objective is carried out with emphasis on the perspective of a risk manager or decision-maker. The proposed evaluation procedure provides consistency to the review process without a loss of flexibility. As a result, the approach described in Part 1 provides an opportunity to apply a single review framework for all EPA regions and yet provide the regional risk manager with the flexibility to deal with site- and case-specific issues in the PRA process. However, as the number of inputs to a PRA increases, so does the complexity of the process for calculating, communicating and managing risk. As a result, there is increasing effort required of both the risk professionals performing the analysis and the risk manager reviewing it. For deterministic risk assessments, the use of default inputs has improved the ease and the consistency of both performing and reviewing assessments. By analogy, it is expected that similar advantage will be seen in the field of probabilistic risk assessment through the introduction of default distributions. In Part 2 of this report, we consider when a default distribution might be appropriate for use in PRA and work towards development of recommended task-specific distributions for several frequently used exposure factors. An approach that we develop using body weight and exposure duration as case studies offers a transparent way for developing task-specific exposure factor distributions. A third case study using water intake highlights the need for further study aimed at improving the relevance of ''short-term'' data before recommendations on task-specific distributions of water intake can be made.

Maddalena, Randy L.; McKone, Thomas E.

2002-08-01T23:59:59.000Z

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Managing the Management: CORBAbased Instrumentation of Management Systems  

E-Print Network [OSTI]

Management Team Department of Computer Science, TU MË? unchen Arcisstr. 21, D­80333 Munich, Germany akeller approach to this problem by defining a MIB for manage­ ment systems. It can be regarded as a step towardsManaging the Management: CORBA­based Instrumentation of Management Systems A. Keller Munich Network

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