GB/T 43347-2023Environmental parameter monitoring of electrical，instrumentation and control equipment important to safety for nuclear power plants (English PDF)
核电厂安全重要电气、仪表与控制设备环境参数的监测
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
November 27, 2023
Implementation date
March 1, 2024
Scope
GB/T 43347-2023 is the English-translated version of 核电厂安全重要电气、仪表与控制设备环境参数的监测.
GB/T 43347-2023 sets out how a nuclear power plant monitors the environmental parameters around the electrical, instrumentation and control equipment important to safety while the plant is running.
It fixes the monitoring principles and the general process, then the technical requirements: how the parameters to be monitored are selected, the monitoring methods, where the monitoring points go, the monitoring instruments and the duration and frequency of monitoring, followed by the storage of monitoring data and documents and by quality assurance, with an informative appendix on equivalent temperature conversion using the Arrhenius model.
Clause 1 leaves out design basis accident monitoring and names the uses of the data: verifying design environmental parameters, extending equipment qualified life, analysing failures, renewing the operating licence and ageing assessment. Issued on 27 November 2023, it has applied since 1 March 2024.
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Document preview — GB/T 43347-2023
National Standard of the People's Republic of China
- ICS
- 27.120.20
- Classification
- F 69
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- Preface
- 1 Scope
- 2 Normative references
- 3 Terms and Definitions
- 4 Principles and processes of operating environment parameter monitoring
- 4.1 Principles of operating environment parameter monitoring
- 4.2 General process of operating environment parameter monitoring
- 5 Technical requirements for operating environment parameter monitoring
- 5.1 Selection of operating environment monitoring parameters
- 5.2 Operating environment parameter monitoring method
- 5.3 Operating environment parameter monitoring location
- 5.4 Monitoring instruments
- 5.5 Monitoring duration and frequency
- 6 Operating environment parameter monitoring data and document storage
- 7 Quality Assurance
- Appendix A (informative) Example of equivalent temperature conversion applied to the Arrhenius model
- Reference
Foreword
This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1: Structure and Drafting Rules of Standardization Documents" Drafting.
1 Scope
This document establishes the environment of electrical, instrumentation and control equipment (hereinafter referred to as "electrical and instrumentation and control equipment") important to safety during the operation of nuclear power plants.
The principles of parameter monitoring also stipulate the process, technical requirements, monitoring data and text storage, quality assurance and other requirements.
This document applies to environmental monitoring of electrical, instrumentation and control equipment important to safety during operation of nuclear power plants (excluding design basis accidents)
Environmental monitoring), guides nuclear power plants to obtain important environmental parameters that significantly affect the aging process of electrical and instrumentation and control equipment, and provides a basis for verification of design environmental parameters and Provide data support for equipment qualification life extension, equipment failure cause analysis, nuclear power plant operation license extension and aging assessment, etc.
Environmental monitoring of other equipment shall be carried out with reference to this document.
2 Normative reference documents
The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, the dated quotations For undated referenced documents, only the version corresponding to that date applies to this document; for undated referenced documents, the latest version (including all amendments) applies to this document.
GB/T 12727 Qualification of safety-level electrical equipment for nuclear power plants
NB/T 20086 Aging assessment, monitoring and mitigation of safety-level electrical equipment in nuclear power plants
NB/T 20476.9 Nuclear power plant operating license extension Part 9: Time limit aging analysis of electrical and instrumentation and control equipment
NB/T 20512.3 Nuclear power plant operating license extension Part 3: Review of aging management of electrical and instrumentation and control equipment
3 Terms and definitions
The following terms and definitions apply to this document.
3.1 environmental parameter
One or more physical, chemical, or biological characteristics that describe an environmental agent.
Note: For example, environmental factor vibration is characterized by parameters such as vibration type (sinusoidal, random), acceleration and frequency. Examples of environmental parameters include temperature, speed etc. [Source: GB/T 4796-2017, 3.3, with modifications]
3.2 Before
the original operating license of the nuclear power plant expires, the license period of the nuclear power plant operating license shall be extended to the original operating license through analysis and evaluation. process after the license period.
3.3 Qualified life
A structure, system or component has been proven through testing, analysis and/or operating experience to be capable of acceptance under specific operating conditions.
Operate within the standard range while maintaining the time required to perform its safety functions under design basis accident or seismic conditions. [Source: NB/T 20063-2012,6.1.8]
......
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 12727Qualification of electrical equipment important to safety for nuclear power plants
- NB/T 20086Assessing, Monitoring, and Mitigating Aging Effects on Class 1E Equipment Used in Nuclear Power Plants
- NB/T 20476.9Nuclear Power Plant Operation Permit Renewal Part 9: Time Limitation Analysis of Electrical and Instrument Control Equipment
- NB/T 20512.3Nuclear power plant operating license renewal - Part 3: Review of aging management of electrical and instrumentation and control equipment
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Related Standards
GB/T 12727-2023 — Qualification of electrical equipment important to safety for nuclear power plants
NB/T 20086-2012 — Assessing, Monitoring, and Mitigating Aging Effects on Class 1E Equipment Used in Nuclear Power Plants
NB/T 20476.9-2019 — Nuclear Power Plant Operation Permit Renewal Part 9: Time Limitation Analysis of Electrical and Instrument Control Equipment
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