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NB/T 20139-2012Technical Criteria for Environmental Radioactivity Background Investigation for Nuclear Power Plant (English PDF)

核电厂环境放射性本底调查技术规范

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Issued by

NEA

Level / Type

Industry · Recommended

Issue date

January 6, 2012

Implementation date

April 6, 2012

Scope

NB/T 20139-2012 is the English-translated version of 核电厂环境放射性本底调查技术规范.

NB/T 20139-2012, a recommended Chinese energy industry standard, sets the technical criteria for surveying the environmental radioactivity background around a nuclear power plant.

It states the purpose, tasks and requirements of such a survey, then the area to be covered, the principles for siting sampling points, the content and frequency of the work, sample collection, monitoring methods, data processing, quality assurance and quality control, and the preparation of the report.

It is written for the survey made at the licensing application stage and is the working basis for the bodies that carry it out; surveys at other stages may follow it with the area, content and frequency simplified.

It cites GB/T 8170, GB 11216, GB/T 14584, EJ 428, EJ 527, EJ/T 1008 and EJ/T 1204.2. Issued on 6 January 2012, it has applied since 6 April 2012.

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Document preview — NB/T 20139-2012

National Standard of the People's Republic of China

ICS: 27.120.99

Issued by: National Energy Administration of the People's Republic of China

[Preview only]
1 Scope
2 Normative references
3 Terms and definitions
4 Technical requirements
4.1 Environmental conditions
4.2 Operating conditions during on-grid operation
4.3 Wind turbine conditions during off-grid power supply
4.4 Bearing current
4.5 Isolation insulation resistance
4.6 Performance requirements
4.7 Sensors
4.8 Electromagnetic compatibility requirements
4.9 Human-machine interaction
5 Test methods
5.1 Test requirements
5.2 Test principles and methods
6.1 Samples and interfaces
6.2 Technical requirements for test items
7 Inspection rules
7.1 Basic function test
7.2 Touch current test
7.3 Loading test
7.4 Braking test
7.5 Machine-side differential mode voltage dU/dt value
7.6 Temperature rise test
7.7 Converter module current sharing test
7.8 Filter capacitor switching current test
7.9 Filter capacitor operating current test
8 Product nameplate, marking, packaging, transportation and storage
9 Assembly alignment of weldments

1 Foreword

NB/T 20139-2012 was issued by National Energy Administration of the People's Republic of China on 6 January 2012 and has been in force since 6 April 2012.

The NB/T prefix marks a recommended standard. It is not law in itself: it becomes binding when a contract names it, when a regulation or a mandatory standard refers to it, or when a producer declares conformity with it.

The document runs to 15 pages in English translation.

2 Scope Preview

NB/T 20139-2012, a recommended Chinese energy industry standard, sets the technical criteria for surveying the environmental radioactivity background around a nuclear power plant. It states the purpose, tasks and requirements of such a survey, then the area to be covered, the principles for siting sampling points, the content and frequency of the work, sample collection, monitoring methods, data processing, quality assurance and quality control, and the preparation of the report. It is written for the survey made at the licensing application stage and is the working basis for the bodies that carry it out; surveys at other stages may follow it with the area, content and frequency simplified. It cites GB/T 8170, GB 11216, GB/T 14584, EJ 428, EJ 527, EJ/T 1008 and EJ/T 1204.2.

NB/T 20139-2012 falls under ICS 27.120.99, in the field of energy and heat transfer engineering.

This catalogue holds 1,264 other NB/T standards in that field.

In this catalogue, NB/T standards carry edition years from 2009 to 2026.

3 Normative references

GB/T 8170

GB 11216

GB/T 14584

EJ 428

EJ 527

EJ/T 1008

EJ/T 1204.2

4 About this standard

Issued by: National Energy Administration of the People's Republic of China

English translation: about 15 pages

5 Related standards

Standards on related subjects:

GB 39220-2020 — Limits and monitoring methods of total electric field of DC transmission project

GB 27742-2011 — Active concentration for material not requiring radiological regulation

GB 18871-2002 — Basic Standards for Protection Against Ionizing Radiation and for the Safety of Radiation Sources

NB/T 20186-2012 — Calculation of Doses to Public From Routine Releases of Reactor Radioactive Effluents

NB/T 20039.13-2012 — Code on nuclear air and gas treatment - Ventilation, air conditioning and air cleaning - Part 13: Iodine adsorber (Type III)

6 Classification and status

International classification (ICS): 27.120.99

Prefix NB/T: recommended standard.

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.

Referenced standards

Normative references

EJ 428 · EJ 527

Similar standards

NB/T 20433-2017|NB/T 20594-2021|NB/T 20618-2021|NB/T 20507-2018|NB/T 20419-2017|NB/T 20449-2017

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