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NB/T 20060-2012The Separation Criterion for 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隔离准则

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Issued by

NEA

Level / Type

Industry · Recommended

Issue date

January 6, 2012

Implementation date

April 6, 2012

Scope

NB/T 20060-2012 is the English-translated version of 核电厂安全重要仪表和控制系统隔离准则.

NB/T 20060-2012 is the Chinese standard "The Separation Criterion for Instrumentation and Control Systems Important to Safety in Nuclear Power Plants". Its scope clause reads: This standard specifies the separation requirements to be met for nuclear power plant instrumentation and control (I&C) systems and their cables important to safety.

This standard is applicable to nuclear power plant I&C systems, and their cables, that are important to safety. It is also applicable to temporary installations which are part of those I&C systems important to safety (for example, auxiliary equipment for commissioning tests and experiments).

This standard applies to the I&C of new nuclear power plants as well as to I&C upgrading or back-fitting of existing plants. For existing nuclear power plants, only a subset of the requirements is applicable; this subset is to be identified at the beginning of any project. Its clauses include terms and definitions.

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Document preview — NB/T 20060-2012

National Standard of the People's Republic of China

ICS: 27.120.20

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

Foreword
1 Scope
2 Normative References
3 Terms and Definitions
4 General Principles for Separation Within I&C Systems Important to Safety
5 Design Basis
6 Requirements for Cabling Separation
Appendix A (Informative) Structural Changes of This Standard Compared with IEC 60709:2

1 Scope

This standard specifies the separation requirements to be met for nuclear power plant instrumentation and control (I&C) systems and their cables important to safety.

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 editions (including any amendments) apply.

GB/T 13630 Design for Control Rooms of Nuclear Power Plants (GB/T 13630-1992, IEC 60964:1989, eqv)

GB/T 15474 Classification on Instrumentation and Control Function Important to Safety for Nuclear Power Plants (GB/T 15474-2010, IEC 61226:2005, MOD)

IEC 60332 (all parts) Tests on E1ectric Cab1es Under Fire Conditions

IEC 61000 (all parts) E1ectromagnetic Compatibi1ity — Part 6-5: Generic Standards — Immunity for Power Station and Substation Environments

IEC 62096 Nuc1ear Power P1ants — Instrumentation and Contro1 — Guidance for the Decision on Modernization

3 Terms and Definitions

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

3.1 Associated circuit

Circuit of a lower safety category that is not physically separated or is not electrically isolated from the circuit(s) of the higher category by acceptable separation distances, safety class structures, barriers, or electrical isolation devices but meets suitable criteria for safety.

3.2 Barrier

......
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

IEC 60332-3-10 · IEC 60332-3-22 · IEC 60332-3-23 · IEC 60332-3-24 · IEC 60332-3-25 · IEC 60332-1-1 · IEC 60332-1-2 · IEC 60332-1-3 · IEC 60332-2-1 · IEC 60332-2-2 · IEC 60332-3-21 · IEC 61000-2-10 · IEC 61000-2-11 · IEC 61000-2-12 · IEC 61000-2-

Cited by

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