Document Details


Title:
Health Physics Division Progress Report for Period January 20, 1952 to July 20, 1952
Subject Terms:
ORNL, health physics; contamination; dosimetry, plutonium; radioactive, waste disposal; radioisotope, gamma, neutron
Document Location:
DOE INFORMATION CENTER 1 Science.gov Way, Oak Ridge, TN 37831; Eva Butler; Phone: 865-241-4780; Toll-Free: 800-382-6938, Option 6; FAX: 865-574-3521; Email: doeic@oro.doe.gov
Document Categories:
Health, Safety and Environment\Waste Management; Specific Material\Plutonium; Science and Technology\Instruments and Equipment
Document Type:
REPORT
Publication Date:
1952 Sep 22
Declassification Status:
Never classified
Document Pages:
16
Accession Number:
ORF65917
Document Number(s):
ORNL-1353; Copy 14, Series A; Copy14SeriesA
Originating Research Org.:
Carbide and Carbon Chemicals Corporation
OpenNet Entry Date:
1998 Jun 16
Description/Abstract:
This document contains the Health Physics Division Progress Report for the period January 20, 1952 to July 20, 1952. An investigation was conducted in three parts to determine the efficiency of ion-exchange resins in the removal of carrier-free radioiodine (I-131) and carrier-free radiostrontium (Sr-89) from tap water. Results showed wide variations in removals, but in all instances superior removals were obtained with the mixed resin bed. A population of Gambusia affinis affinis, which originated from the fish introduced into the settling basin in May 1951, has become well established in White Oak Lake. The installation of equipment for the measuring and recording water elevations and levels of radioactivity at White Oak Dam and telemetering the measurements to the X-10 area was completed, and after calibration, will provide continuous records at the dam and the Laboratory of the water discharged from White Oak Lake. The procedure selected for the analysis of plutonium in the effluent water discharged from the settling basin was fairly quantitative and reproducible and with it an average recovery of 89.4 percent (with a maximum deviation of 5.3 percent) was achieved in 15 experimental runs, and these new procedures were put into use as of July 1, 1952. Equipment and materials collected for the study of the inactivation of complex molecules, such as enzymes, by heat and by ionizing radiations, is seen as the first step in a larger program of studying the basic problems of dosimetry in tissue. A project for the development of a portable recording scintillometer weighing about 25 lb for use in light aircraft has been initiated and, in case of a disaster, it can be used for making a rapid survey to determine the radiation hazard of a contaminated area. Calculations were made for the maximum permissible amounts of certain radioisotopes in the human body, in water, and in air. Effective with the start of fiscal year 1953, a new program, the Radioactive Particle Program, was inaugurated, and the Protective Equipment Evaluation Program (PEEP) was transferred to the Health Physics Division. Dosimetry measurements proposed for use in Phase I of an experiment involving exposure of animals to a mixed gamma and neutron radiation field at ORNL will be done to determine the integral dose to the whole body and to specific organs with an accuracy commensurate with the biological effects under investigation. An experiment for the determination of the value of W (the number of electron volts required to produce an ion pair) for alpha particles in various gases has been started. Tables and figures are included.


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