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Published on: August 24, 2017
Proficiency testing criteria for clearance level in solid waste gamma measurement in Taiwan
Chun-Liang Chen1, Jeng-Jong Wang, Huang-Sheng Chiu
1Institute of Nuclear Energy Research, Taiwan, ROC. cliangchen@iner.gov.tw
Summary
The Institute of Nuclear Energy Research (INER) developed criteria for proficiency testing of clearance level measurements in radioactive waste. Laboratories must meet ISO/IEC 17025 standards and specific analytical requirements for quality assurance.
Area of Science:
- Nuclear Science and Engineering
- Environmental Science
- Analytical Chemistry
Background:
- Ensuring measurement quality for radioactive waste clearance levels is critical for safety and regulatory compliance.
- The Institute of Nuclear Energy Research (INER) in Taiwan has taken a leading role in establishing robust measurement standards.
- Previous methods lacked standardized proficiency testing, potentially compromising data integrity.
Purpose of the Study:
- To establish comprehensive criteria for the proficiency testing of clearance level measurements in solid radioactive waste.
- To ensure participating laboratories meet stringent quality and analytical performance standards.
- To enhance the reliability and traceability of radioactive waste clearance measurements.
Main Methods:
- Development of specific criteria for proficiency testing through collaborative Technique Committee Meetings between INER and the Taiwan Accreditation Foundation (TAF).
- Mandating adherence to ISO/IEC 17025 international standards for laboratory accreditation.
- Defining analytical performance requirements, including minimum detectable amount (MDA) analysis relative to clearance levels.
Main Results:
- Established clear criteria for proficiency testing, ensuring laboratories meet both international accreditation standards and specific nuclear energy research requirements.
- Participating laboratories demonstrated the ability to meet stringent MDA requirements, with values less than 20% of the specified clearance level.
- Testing results confirmed adherence to deviation and traceability requirements, indicating reliable measurement quality.
Conclusions:
- The established criteria effectively guarantee the measurement quality for clearance level determination in solid radioactive waste.
- Proficiency testing based on these criteria enhances the reliability and comparability of analytical results across laboratories.
- These standards contribute to the safe and effective management of radioactive waste by ensuring accurate clearance level assessments.
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