GB/T 29789-2013
Radiation protection instrumentation.Equipment for sampling and monitoring radioactive noble gases (English Version)

Standard No.

GB/T 29789-2013

Language

Chinese, Available in English version

Release Date

2013

Published By

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China

Latest

GB/T 29789-2013

Scope

This standard applies to equipment for sampling and continuous measurement of radioactive noble gases in the workplace, in gaseous effluent streams discharged into the environment, and in the environment itself. Prescribed monitoring is a continuous and real-time measurement process. This International Standard covers the process of sampling or obtaining samples for retrospective laboratory analysis. The purpose of this standard is to establish the necessary general requirements and to give examples of possible methods and equipment for sampling and monitoring of radioactive noble gases. This standard is a complete expansion of the current standard GB/T 7165.3-2008, which is only applicable to portable and mobile radioactive noble gas sampling and monitoring equipment fixedly installed in the gaseous exhaust stream. Including monitoring all occasions where radioactive noble gases may cause radiological hazards. Equipment is designed to work under normal operating conditions as well as under emergency conditions (including during and after accidents). Depending on the nature of the emergency conditions, it may be necessary to install equipment designed specifically for normal operating conditions and other equipment specifically designed for emergency conditions. This standard applies to radioactive noble gas samplers and monitors that provide the following functions: -- measure the volumetric activity of radioactive noble gases and their changes with time in the workplace, the gaseous exhaust stream of the discharge point, and the environment; -- Perform measurements during normal operating conditions and under emergency conditions (including during and after accidents); -- activate an alarm when the preset volume activity or concentration or preset total emission activity is exceeded; -- determine The total activity of the gas emitted within a certain time frame and (or) provide information on the composition of different gas mixtures emitted; -- Sampling and retrospective analysis of air or gas containing inert gases. Radon containing isotopes ²¹⁹Rn, ²²⁰Rn and ²²²Rn is a naturally occurring radioactive inert gas, which is not considered to be measured in this standard. The presence of radon and its progeny may significantly interfere with the correct measurement of the noble gases covered by this standard. This standard specifies the general characteristics, general test methods, mechanical characteristics, electrical and electronic characteristics, radiation characteristics of equipment

GB/T 29789-2013 Referenced Document

• GB 17799.4-2012 Electromagnetic compatibility(EMC).Generic standards.Emission standard for industrial environments
• GB/T 16511-1996 Electrical and electronic measuring equipment--Documentation
• GB/T 2900.81-2008 Electrotechnical terminology.Nuclear instrumentation Physical phenomena and basic conecpts
• GB/T 7165.1-2005 Equipment for continuous monitoring of radioactivity in gaseous effluents Part1:General requirements
• GB/T 7165.3-2008 Equipment for continuous monitoring of radioactivity in gaseous effluents.Part 3:Specific requirements for radioactive noble gas monitors
• IEC 60068 Basic climatic and mechanical robustness testing procedure for components
• IEC 61000-4 Electromagnetic compatibility (EMC) - Part 4-9: Testing and measurement techniques - Impulse magnetic field immunity test*， 2016-07-13 Update

GB/T 29789-2013 history

• 2013 GB/T 29789-2013 Radiation protection instrumentation.Equipment for sampling and monitoring radioactive noble gases