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NB/T 20071-2012Requirements for Electrical Supplies of Instrumentation and Control Systems Important to Safety in Nuclear Power Plants (English PDF)

核电厂安全重要仪表和控制系统的供电要求

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Issued by

NEA

Level / Type

Industry · Recommended

Issue date

January 6, 2012

Implementation date

April 6, 2012

Scope

NB/T 20071-2012 is the English-translated version of 核电厂安全重要仪表和控制系统的供电要求.

NB/T 20071-2012 is the Chinese standard "Requirements for Electrical Supplies of Instrumentation and Control Systems Important to Safety in Nuclear Power Plants".

Its scope clause reads: This standard specifies the performance and functional characteristics of the electrical supply systems required for the instrumentation and control (I&C) systems important to safety in nuclear power plants (hereinafter referred to as I&C supply systems).

Guidance is also given on the possible use of these electrical supply systems for other I&C systems. This standard is applicable to the design of supply systems required for I&C supply systems important to safety in nuclear power plants.

This standard does not apply to the specific design of parts in I&C supply systems. Its clauses include terminologies and definitions.

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Document preview — NB/T 20071-2012

National Standard of the People's Republic of China

ICS: 27.120.99
Replacing: EJ/T 760-1993

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

Foreword i
1 Scope
2 Normative References
3 Terminologies and Definitions
4 System Functions and System Boundaries
5 Requirements for Redundancy and Independence
6 Functional Requirements for Power Supplies of I&C System
7 Requirements for Distribution System Design
8 Effects to Be Considered
9 Characteristics of Supplies Given to Loads
10 Monitoring and Protection
11 Qualification of Equipment
12 Testing
13 Maintenance
Appendix A (Informative) Example of Power Supply Requirements for I&C System Important to Safety

1 Scope

This standard specifies the performance and functional characteristics of the electrical supply systems required for the instrumentation and control (I&C) systems important to safety in nuclear power plants (hereinafter referred to as I&C supply systems). Guidance is also given on the possible use of these electrical supply systems for other I&C systems.

This standard is applicable to the design of supply systems required for I&C supply systems important to safety in nuclear power plants.

This standard does not apply to the specific design of parts in I&C supply systems.

2 Normative References

The following documents are indispensable for the application of this document. For dated references, only the dated editions apply. For undated references, the latest edition of the normative document (including any amendments) applies.

GB/T 12727 Nuclear Power Plants - Electrical Equipment of the Safety System - Qualification (GB/T 12727-2002, IEC 60780:1998, MOD)

GB/T 13625 Seismic Qualification of Electrical Equipment of the Safety System for Nuclear Power Plants (GB/T 13625-1992, IEC 60980:1989, eqv)

GB/T 13286 Criteria for Independence of Class 1E Equipment and Circuits in Nuclear Power Plants

GB/T 17526 (All Parts) Electromagnetic Compatibility - Testing and Measurement Techniques

HAD 102/13 Emergency Power System in Nuclear Power Plants

HAD 102/14 Safety-related Instrumentation and Control Systems for Nuclear Power Plants

3 Terminologies and Definitions

For the purposes of this document, the following terminologies and definitions apply.

3.1 Instrumentation and control (I&C) systems important to safety

......
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

GB/T 17626.

Cited by

Similar standards

GB/T 43347-2023|NB/T 20060-2012|NB/T 20054-2011|NB/T 20029-2010|GB/T 40444-2021|GB/T 41142-2021

Editions of NB/T 20071

Edition	Title	Revision	Status
NB/T 20071-2012	Requirements for Electrical Supplies of Instrumentation and Control Systems Important to Safety in Nuclear Power Plants	current edition	Current
EJ/T 760-1993	Requirements for Electrical Supplies of Instrumentation and Control Systems Important to Safety in Nuclear Power Plants	previous edition	Superseded

This page sells the current edition, NB/T 20071-2012. Earlier editions are listed for reference only.

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