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GB/T 41646-2022 English PDF

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GB/T 41646-2022: Radiation protection instrumentation - Backpack-type radiation detector (BRD) for the detection of illicit trafficking of radioactive material
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GB/T 41646-2022English969 Add to Cart 7 days [Need to translate] Radiation protection instrumentation - Backpack-type radiation detector (BRD) for the detection of illicit trafficking of radioactive material Valid GB/T 41646-2022

PDF similar to GB/T 41646-2022


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Basic data

Standard ID GB/T 41646-2022 (GB/T41646-2022)
Description (Translated English) Radiation protection instrumentation - Backpack-type radiation detector (BRD) for the detection of illicit trafficking of radioactive material
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard F84
Word Count Estimation 50,550
Issuing agency(ies) State Administration for Market Regulation, China National Standardization Administration

GB/T 41646-2022: Radiation protection instrumentation - Backpack-type radiation detector (BRD) for the detection of illicit trafficking of radioactive material


---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Radiation protection instrumentation - Backpack-type radiation detector (BRD) for the detection of illicit trafficking of radioactive material ICS 13.280 CCSF84 National Standards of People's Republic of China Radiation protection instruments for the detection of radioactive substances Illicitly trafficked knapsack radiation detectors (IEC 62694.2014, MOD) Published on 2022-07-11 2023-02-01 Implementation State Administration for Market Regulation Released by the National Standardization Administration directory Preface III 1 Scope 1 2 Normative references 1 3 Terms and Definitions, Abbreviations, Quantities and Units 1 3.1 Terms and Definitions 1 3.2 Abbreviations 3 3.3 Quantities and units 3 4 General test method 3 4.1 Test characteristics 3 4.2 Standard test conditions 3 4.3 Tests conducted under standard test conditions 3 4.4 Experiments with variation in the amount of influence 4 4.5 Statistical fluctuations 4 4.6 Measurement uncertainty4 4.7 Background radiation during testing 4 4.8 BRD Setup 4 4.9 Speed of source movement and cumulative time for nuclide identification 5 4.10 Radiation sources 5 4.11 Functional test 5 5 General requirements7 5.1 General requirements7 5.2 Design Requirements 7 5.3 Identification 7 5.4 Switch 7 5.5 Effective measuring range of energy8 5.6 Valid measuring range for count rate 8 5.7 Operating parameters 8 5.8 Explosive atmospheres 8 5.9 Self-test 8 5.10 Power 9 5.11 Data Format 9 5.12 Data Storage 11 5.13 Communication interface 11 5.14 User Interface 11 6 Radiation detection requirements 14 6.1 False alarm test 14 6.2 Alarm response to gamma radiation 14 6.3 Alarm response to neutron radiation 15 6.4 Personal radiation protection alarms and response times 16 6.5 γ Surrounding dose equivalent rate indication value 17 6.6 Verification of Angular Responses and Orientation Indications 17 6.7 Overload test 18 6.8 Neutron indication in the presence of gamma 19 6.9 Detection of gradually increasing radiation levels 19 6.10 Network Area Monitor 20 6.11 Nuclide identification (if applicable) 21 7 Environmental Requirements 26 8 Mechanical requirements 27 9 Electromagnetic compatibility requirements 27 10 Documents 27 10.1 Overview 27 10.2 Type test report 27 10.3 Test certificates 28 10.4 Operation and Maintenance Manual 28 Appendix A (Informative) Statistical basis 33 A.1 Poisson Distribution 33 A.2 Confidence Intervals for the Poisson Distribution 33 A.3 False alarm test 33 A.4 Binomial Distribution 34 Appendix B (informative) List of daughters and impurities36 Appendix C (Informative) Summary of Flux Rate Calculations 38 Appendix D (normative) Calculation of Ambient Dose Equivalent Rate 40 Reference 45

foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1.Structure and Drafting Rules of Standardization Documents" drafted. This document is modified to adopt IEC 62694.2014 "Radiation Protection Instruments for the Detection of Illicit Trafficking in Radioactive Materials by Knapsack Radiation Detectors Tester". This document makes the following structural changes. --- Divide the content in 4.11 into four three-level expressions (see 4.11.1~4.11.4). The technical differences between this document and IEC 62694.2014 and their reasons are as follows. --- Replace IEC 60050-393 and IEC 60050-394 with IEC 60050 (all parts) (see 3.1); ---Because ISO 4037-3.1999 is obsolete, the value of h*K(10) is changed from ISO 4037-3.1999 to ISO 4037-3 (see Appendix D). Please note that some content of this document may be patented. The issuing agency of this document assumes no responsibility for identifying patents. This document is proposed and managed by the National Standardization Technical Committee of Nuclear Instrumentation (SAC/TC30). This document is drafted by. CGN Jiuyuan (Chengdu) Technology Co., Ltd., Zhonghe Zhiyi (Yichang) Technology Co., Ltd., People's Liberation Army 96901 Unit, Guangdong Police Academy, Fujian Ningde Nuclear Power Co., Ltd., Institute of Nuclear Industry Standardization. The main drafters of this document. Li Daqing, Yang Binhua, Peng Xiangyu, Qiao Qiao, Wu Longxiong, Zhang Kai, Deng Yunyue, Zhao Fengtao, Xu Xiyan, Wu Xinyuan, Liao Guangjun, Yu Zefeng, Li Fuping, Li Yunwen. Radiation protection instruments for the detection of radioactive substances Illicitly trafficked knapsack radiation detectors

1 Scope

This document specifies the performance and tests and electrical, mechanical and environmental conditions of a Backpack Radiation Detector (BRD) related to radiation measurements requirements. This document applies to Backpack Radiation Detectors (BRDs) that detect illicit trafficking in radioactive material. Note. The BRD is a portable instrument designed for backpack use and can also be used independently as a temporary area monitor. BRD is used to detect gamma radiation, its power Energy may also include neutron detection and/or identification of gamma ray nuclides.

2 Normative references

The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, dated citations documents, only the version corresponding to that date applies to this document; for undated references, the latest edition (including all amendments) applies to this document. ISO 4037-3 Radiation Protection Calibrated Dosimeters and Dose Rate Meters and X and Gamma Reference Radiation for Determining Their Photon Energy Response Section 3 Note. GB/T 12162.3-2004 X and Gamma Reference Radiation for Calibrating Dosimeters and Dose Rate Meters and Determining Their Energy Responses Part 3.Local Dosimeters Calibration of dosimeters and personal dosimeters and determination of their energy and angular responses (ISO 4037-3.1999, IDT) Note. GB/T 2900 (all parts) Electrotechnical terms [IEC 60050 (all parts)] Note. GB/T 3836.4-2021 Explosive Atmospheres Part 4.Equipment protected by intrinsically safe "i" (IEC 60079-11.2011, MOD) Note. GB/T 34138-2017 Environmental, Electromagnetic and Mechanical Performance Requirements for Radiation Protection Instruments (IEC 62706.2012, IDT) IEC 62755 Radiation Protection Instruments Data Format for Illicit Trafficking of Radiation Instruments for Detection of Radioactive Materials (Radiation 3 Terms and Definitions, Abbreviations, Quantities and Units 3.1 Terms and Definitions Terms and definitions defined in IEC 60050 (all parts) and the following terms and definitions apply to this document. 3.1.1 accuracy The degree of agreement between the measurement result and the contractual truth value of the measurand.

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