skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Importance of the Primary Radioactivity Standard Laboratory and Implementation of its Quality Management

Abstract

The paper presents some specific aspects of the implementation of the quality management in the Radionuclide Metrology Laboratory, from IFIN-HH, the owner of the primary Romanian standard in radioactivity. The description of the accreditation, according to the EN ISO/IEC 17025:2005, is presented.

Authors:
; ; ;  [1]
  1. 'Horia Hulubei' National Institute of Physics and Nuclear Engineering (IFIN-HH), 407 Atomistilor Street, PO Box MG-6, Magurele, Ilfov County, RO-077125 (Romania)
Publication Date:
OSTI Identifier:
21057185
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 899; Journal Issue: 1; Conference: 6. international conference of the Balkan Physical Union, Istanbul (Turkey), 22-26 Aug 2006; Other Information: DOI: 10.1063/1.2733267; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; IMPLEMENTATION; ISO; QUALITY ASSURANCE; RADIOACTIVITY; RADIOISOTOPES; STANDARDS

Citation Formats

Sahagia, Maria, Razdolescu, Anamaria Cristina, Luca, Aurelian, and Ivan, Constantin. Importance of the Primary Radioactivity Standard Laboratory and Implementation of its Quality Management. United States: N. p., 2007. Web. doi:10.1063/1.2733267.
Sahagia, Maria, Razdolescu, Anamaria Cristina, Luca, Aurelian, & Ivan, Constantin. Importance of the Primary Radioactivity Standard Laboratory and Implementation of its Quality Management. United States. doi:10.1063/1.2733267.
Sahagia, Maria, Razdolescu, Anamaria Cristina, Luca, Aurelian, and Ivan, Constantin. Mon . "Importance of the Primary Radioactivity Standard Laboratory and Implementation of its Quality Management". United States. doi:10.1063/1.2733267.
@article{osti_21057185,
title = {Importance of the Primary Radioactivity Standard Laboratory and Implementation of its Quality Management},
author = {Sahagia, Maria and Razdolescu, Anamaria Cristina and Luca, Aurelian and Ivan, Constantin},
abstractNote = {The paper presents some specific aspects of the implementation of the quality management in the Radionuclide Metrology Laboratory, from IFIN-HH, the owner of the primary Romanian standard in radioactivity. The description of the accreditation, according to the EN ISO/IEC 17025:2005, is presented.},
doi = {10.1063/1.2733267},
journal = {AIP Conference Proceedings},
number = 1,
volume = 899,
place = {United States},
year = {Mon Apr 23 00:00:00 EDT 2007},
month = {Mon Apr 23 00:00:00 EDT 2007}
}
  • Purpose: To explore the implementation and effectiveness of incident learning for the safety and quality of radiotherapy in a new established radiotherapy program with advanced technology. Methods: Reference to the consensus recommendations by American Association of Physicist in Medicine, an incident learning system was specifically designed for reporting, investigating, and learning of individual radiotherapy incidents in a new established radiotherapy program, with 4D CBCT, Ultrasound guided radiotherapy, VMAT, gated treatment delivered on two new installed linacs. The incidents occurring in external beam radiotherapy from February, 2012 to January, 2014 were reported. Results: A total of 33 reports were analyzed, includingmore » 28 near misses and 5 incidents. Among them, 5 originated in imaging for planning, 25 in planning, 1 in plan transfer, 1 in commissioning and 1 in treatment delivery. Among them, three near misses originated in the safety barrier of the radiotherapy process. In terms of error type, 1 incident was classified as wrong patient, 7 near misses/incidents as wrong site, 6 as wrong laterality, 5 as wrong dose, 7 as wrong prescription, and 7 as suboptimal plan quality. 5 incidents were all classified as grade 1/2 of dosimetric severity, 1 as grade 0, and the other 4 as grade 1 of medical severity. For the causes/contributory factors, negligence, policy not followed, inadequate training, failure to develop an effective plan, and communication contributed to 19, 15, 12, 5 and 3 near misses/incidents, respectively. The average incident rate per 100 patients treated was 0.4; this rate fell to 0.28% in the second year from 0.56% in the first year. The rate of near miss fell to 1.24% from 2.22%. Conclusion: Effective incident learning can reduce the occurrence of near miss/incidents, enhance the culture of safety. Incident learning is an effective proactive method for improving the quality and safety of radiotherapy.« less
  • The paper aims to present a practical approach for testing laboratories to ensure the quality of their test results. It is based on the experience gained in assessing a large number of testing laboratories, discussing with management and staff, reviewing results obtained in national and international PTs and ILCs and exchanging information in the EA laboratory committee.According to EN ISO/IEC 17025, an accredited laboratory has to implement a programme to ensure the quality of its test results for each measurand. Pre-analytical, analytical and post-analytical measures shall be applied in a systematic manner. They shall include both quality control and qualitymore » assurance measures.When designing the quality assurance programme a laboratory should consider pre-analytical activities (like personnel training, selection and validation of test methods, qualifying equipment), analytical activities ranging from sampling, sample preparation, instrumental analysis and post-analytical activities (like decoding, calculation, use of statistical tests or packages, management of results).Designed on different levels (analyst, quality manager and technical manager), including a variety of measures, the programme shall ensure the validity and accuracy of test results, the adequacy of the management system, prove the laboratory's competence in performing tests under accreditation and last but not least show the comparability of test results.Laboratory management should establish performance targets and review periodically QC/QA results against them, implementing appropriate measures in case of non-compliance.« less
  • The term ''water quality'' has many meanings, most of which are defined by the end of the water in question. In oilfield waterflooding, water quality is usually defined in terms of the plugging tendency of the water. Ideally, the quality of the water should be such that is no reservoir plugging, and hence no loss of injectivity during the life of the flood. In addition, the injection system must be protected against corrosion to preserve its physical integrity and to prevent the generation of insoluble corrosion products. The contaminants primarily responsible for plugging fall into three categories: Present at themore » source. Some of the primary contaminants commonly present at the source include: in produced water - oil, corrosion products from the production system, bacteria; in water supply wells - formation solids, corrosion products, bacteria; and in surface waters - dissolved oxygen, bacteria, suspended inorganic solids, marine organisms. Generated within the injection system. Contaminants generated within the system may include corrosion products, bacterial masses, biogenic hydrogen sulfide, and scale; Added to the injection system. Sometimes, intentionally added materials ultimately contribute to plugging. For example, contaminants such as dissolved oxygen, bacteria, suspended solids, and usually oil are the inevitable results of pumping trucked water or pit water into an injection system. Improperly selected corrosion inhibitors that are not sufficiently soluble in the injection water can contribute to plugging. The difficulty of preserving water quality is essentially a direct function of the length and complexity of the injection system. The result is that the quality of the water reaching remote injection wells in long systems is often considerably worse than it was at the source.« less