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NB/T 20093-2012Qualification of Safety-related Valve Actuators for Nuclear Power Plants (English PDF)

核电厂安全级阀门驱动装置的鉴定

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Issued by

NEA

Level / Type

Industry · Recommended

Issue date

January 6, 2012

Implementation date

April 6, 2012

Scope

NB/T 20093-2012 is the English-translated version of 核电厂安全级阀门驱动装置的鉴定.

NB/T 20093-2012 is the Chinese standard "Qualification of Safety-related Valve Actuators for Nuclear Power Plants".

Its scope clause reads: This standard establishes criteria for qualification of safety-related valve actuators, and actuator components in nuclear power plant in order to demonstrate their ability to perform their intended safety functions.

This standard is applicable to qualification of safety-related valve actuators and actuator components in nuclear power plant. Its clauses include terms and definitions.

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Document preview — NB/T 20093-2012

National Standard of the People's Republic of China

Replacing: EJ/T 531-2001

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

1 Scope
2 Normative References
3 Terms and Definitions
4 General Provisions
5 Identification of the Generic Actuator Group
6 Qualification Testing of Selected Actuators in Generic Actuator Group
7 Qualification of Actuator for Specific Application
8 Documentation
9 Baseline Functional Test
10 Thermal Aging Test
11 Radiation Aging Test
12 Cycle Aging Test
13 Pressurization Cycle Test
14 Vibration Aging Test
15 Seismic Simulation Test
16 DBE Radiation Exposure Test
17 DBE Environment Test
Appendix A (Informative) Method of Selection of Representative Actuator(s) for Type Testing
Appendix B (Informative) Performance Verification Test
Appendix C (Informative) Rationale for Vibration and Seismic Test Methods

1 Scope

This standard establishes criteria for qualification of safety-related valve actuators, and actuator components in nuclear power plant in order to demonstrate their ability to perform their intended safety functions.

This standard is applicable to qualification of safety-related valve actuators and actuator components in nuclear power plant.

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 all the amendments) apply.

GB/T 12727 Nuclear power plants - Electrical equipment of the safety system - Qualification

GB/T 13625 Seismic Qualification of Electrical Equipment of the Safety System for Nuclear Power Plants

NB/T 20086-2012 Evaluation, Monitoring and Mitigation of Safety Electrical Equipment Ageing in Nuclear Power Station

IEEE 101-1987 IEEE Guide for the Statistical Analysis of Thermal Life Test Data

3 Terms and Definitions

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

3.1 Actuator

An electric, pneumatic, hydraulic, or electrohydraulic power-driven mechanism for positioning two-position or modulating valves, and dampers. Included are those components required to control valve action and to provide valve position output signals, as defined in the actuator specification.

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 16 pages — is available in the English PDF.

Referenced standards

Normative references

IEEE 101-1987

Cited by

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Editions of NB/T 20093

Edition	Title	Revision	Status
NB/T 20093-2012	Qualification of Safety-related Valve Actuators for Nuclear Power Plants	current edition	Current
EJ/T 531-2001	Qualification of Safety-related Valve Actuators for Nuclear Power Plants	previous edition	Superseded

This page sells the current edition, NB/T 20093-2012. Earlier editions are listed for reference only.

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