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GB/T 13626-2021: Application of the single-failure criterion for nuclear power plant safety systems
Status: Valid GB/T 13626: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 13626-2021 | English | 269 |
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Application of the single-failure criterion for nuclear power plant safety systems
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GB/T 13626-2021
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| GB/T 13626-2008 | English | 439 |
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Application of the single failure criterion to safety systems in nuclear power plant
| Obsolete |
GB/T 13626-2008
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| GB/T 13626-2001 | English | 439 |
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Application of the single failure criterion to safety systems in nuclear power plant
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GB/T 13626-2001
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| GB/T 13626-1992 | English | 279 |
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Application of the single failure criterion to class 1E system in nuclear power plant
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GB/T 13626-1992
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PDF similar to GB/T 13626-2021
Basic data | Standard ID | GB/T 13626-2021 (GB/T13626-2021) | | Description (Translated English) | Application of the single-failure criterion for nuclear power plant safety systems | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | F83 | | Word Count Estimation | 13,117 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 13626-2021: Application of the single-failure criterion for nuclear power plant safety systems
---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Application of the single-failure criterion for nuclear power plant safety systems
ICS 27:120:20
CCSF83
National Standards of People's Republic of China
Replacing GB/T 13626-2008
Application of Single Fault Criterion to Nuclear Power Plant Safety System
Published on 2021-12-31
2022-07-01 Implementation
State Administration for Market Regulation
Released by the National Standardization Administration
directory
Preface III
1 Scope 1
2 Normative references 1
3 Terms and Definitions 1
4 Single Failure Criterion 3
5 Requirements 3
6 Design Analysis of Single Fault 6
Appendix A (Informative) Undetectable Failure Example 8
Reference 9
foreword
This document is in accordance with the provisions of GB/T 1:1-2020 "Guidelines for Standardization Work Part 1: Structure and Drafting Rules of Standardization Documents"
drafted:
This document replaces GB/T 13626-2008 "Single fault criterion applied to nuclear power plant safety system", and GB/T 13626-2008
In contrast, except for structural adjustments and editorial changes, the main technical changes are as follows:
--- Changed the definition of common cause failure (see 3:4, 3:4 of the:2008 edition);
--- Added evaluation requirements for undetectable faults (see 5:2);
--- Deleted the example in "Cascading Faults" (see 5:3 of the:2008 edition);
--- Changed the description of design basis event analysis requirements (see 5:4, 5:4 of the:2008 edition);
--- Clarify that common cause failures are beyond the scope of the single failure criterion, and supplement the screening process for common cause failures (see 5:5,:2008 edition of
5:5);
--- Changed the relevant description and chapter number in "Design Analysis of Single Failure" (see Chapter 6, Chapter 6 of the:2008 edition);
--- Deleted "Probability Evaluation Characteristics" (see 6:3:2 of the:2008 edition);
--- Added undetectable failure examples (see Appendix A):
Please note that some content of this document may be patented: The issuing agency of this document assumes no responsibility for identifying patents:
This document is proposed and managed by the National Standardization Technical Committee of Nuclear Instrumentation (SAC/TC30):
This document is drafted by: China Nuclear Power Engineering Co:, Ltd:, Institute of Nuclear Industry Standardization:
The main drafters of this document: Xing Ji, Chen Rigang, Liao Shengyong, Jiang Mingyue, Cui Minglu, Zhang Dong, Wang Shaohua, Li Pengfei, Jiao Liling, Du Jian:
The previous versions of this document and its superseded documents are as follows:
---First published in August:1992 as GB/T 13626-1992, first revised in April:2001, second in July:2008
revision;
---This is the third revision:
Application of Single Fault Criterion to Nuclear Power Plant Safety System
1 Scope
This document specifies the general principles and requirements for the application of the single fault criterion to the power, instrumentation and control parts of the safety system of a nuclear power plant:
This document clarifies the single failure criterion, instructs safety systems how to apply the single failure criterion and proposes an acceptable single failure
The analysis method is applicable to the safety system of nuclear power plant:
2 Normative references
The contents of the following documents constitute essential provisions of this document through normative references in the text: Among them, dated citations
documents, only the version corresponding to that date applies to this document; for undated references, the latest edition (including all amendments) applies to
this document:
GB/T 7163 Reliability Analysis Requirements for Nuclear Power Plant Safety Systems
GB/T 9225 General principles for reliability analysis of safety systems in nuclear power plants
3 Terms and Definitions
The following terms and definitions apply to this document:
3:1
failure
invalid
An item has lost its intended function:
3:2
detectablefailure detectablefailure
Faults that can be identified by periodic tests, or faults found by alarms or abnormal displays:
NOTE 1 Component failures detected at the channel level, sequence level or system level are all detectable failures:
Note 2: Distinguishable but undetectable faults are faults judged by analysis: These faults cannot be found through periodic tests, nor can they be detected through alarms or exceptions:
Findings are always displayed:
3:3
Periodic test periodictest
A test carried out at planned intervals to detect faults and check operability:
3:4
common cause failure commoncausefailure
A failure in which two or more structures, systems or components fail due to a specified single event or cause:
3:5
designbasisevents
Hypothetical initiating events used in the design to determine acceptable performance requirements for structures, systems and components:
3:6
Drive device actuationdevice,actuator
A component or collection of components that directly controls the motive power of an actuator (electricity, compressed air, hydraulic fluid, etc:):
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