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GB/T 42144-2022 English PDF

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GB/T 42144-2022: Calculation of doses to the public from discharge of effluents from reactor
Status: Valid

Standard ID	Contents [version]	USD	STEP2	[PDF] delivered in	Standard Title (Description)	Status	PDF
GB/T 42144-2022	English	509	Add to Cart	5 days [Need to translate]	Calculation of doses to the public from discharge of effluents from reactor	Valid	GB/T 42144-2022

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Basic data

Standard ID	GB/T 42144-2022 (GB/T42144-2022)
Description (Translated English)	Calculation of doses to the public from discharge of effluents from reactor
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	F70
Classification of International Standard	13.280
Word Count Estimation	26,293
Date of Issue	2022-12-30
Date of Implementation	2023-07-01
Issuing agency(ies)	State Administration for Market Regulation, China National Standardization Administration

GB/T 42144-2022: Calculation of doses to the public from discharge of effluents from reactor

---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.
ICS 13.280 CCSF70 National Standards of People's Republic of China Reactor effluent discharges to the public DOSE ESTIMATION METHODS Posted on 2022-12-30 2023-07-01 implementation State Administration for Market Regulation Released by the National Standardization Management Committee

Preface I 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 General Principles of Estimation 1 5-year effective dose estimation method2 Appendix A (Informative) Calculation Model of Radionuclide Activity Concentration in Environmental Medium 8 Appendix B (informative) recommended value of dose conversion factor 16 Appendix C (informative) Recommended value of shore width correction factor for evaluating external exposure of shore sediments 22 Reference 23

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 for Standardization Documents" drafting. This document is proposed and managed by the National Nuclear Energy Standardization Technical Committee (SAC/TC58). This document is drafted by. China Nuclear Power Research and Design Institute, Suzhou Thermal Engineering Research Institute Co., Ltd., Shanghai Nuclear Engineering Research and Design Institute Co., Ltd. company. The main drafters of this document. Lu Huanwen, Tan Yi, Yu Hong, Li Lan, Deng Lilin, Xiao Feng, Zhu Jianping, Zhao Feng, Pei Juan, Fu Yaru. Reactor effluent discharges to the public DOSE ESTIMATION METHODS

1 Scope

This document describes methods for estimating doses to the public from effluent discharges under reactor operating conditions. This document is applicable to the estimation of public doses caused by effluent discharges in the operating state of the reactor, and public doses caused by effluent discharges from other nuclear facilities. Dose estimation is performed by reference. This document does not apply to the estimation of doses to the public from the release of radioactive material to the environment during and after a reactor accident.

2 Normative references

The contents of the following documents constitute the essential provisions of this document through normative references in the text. Among them, dated references For documents, only the version corresponding to the date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to this document. GB 18871-2002 Basic standards for protection against ionizing radiation and safety of radiation sources

3 Terms and Definitions

The following terms and definitions defined in GB 18871-2002 apply to this document. 3.1 effluent discharge effluentsdischarge The radionuclides produced by the normal operation of the reactor are processed enough to meet the requirements of the relevant national standards, and are processed according to the predetermined route. Emissions to the environment in gaseous or liquid form. 3.2 gaseous effluents Produced by the normal operation of the reactor, it is discharged into the environment after strict treatment, and contains a gaseous material flow with a very low concentration of radioactive activity. 3.3 liquid effluents Produced by the normal operation of the reactor, it is discharged into the environment after strict treatment, and contains a liquid material flow with a very low concentration of radioactive activity.

4 General principles of estimation

4.1 Estimation of public dose due to discharge of reactor effluent should consider both gaseous and liquid effluents. 4.2 Estimation of public doses due to gaseous effluents should consider air immersion external exposure, ground deposition external exposure, inhalation internal exposure and land ingestion. Internal irradiation of raw food with 4 irradiation pathways. 4.3 Estimation of public doses caused by liquid effluents from inland reactors should take into account external exposure to water, external exposure to shore sediments, and ingestion of aquatic products. Internal exposure, internal exposure to drinking water, and internal exposure to eating terrestrial food. 4.4 Estimation of public doses caused by liquid effluents from coastal reactors should take into account external exposure to water, external exposure to shore sediments, and ingestion of aquatic products. There are 3 routes of internal irradiation. 4.5 Based on the differences in diet, living habits and dose conversion factors, the public can be divided into age groups, which can be divided into adult group, adolescent group, children's group, etc.

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