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GB/T 21109.2-2023Functional safety of safety instrumented systems for the process industry sector - Part 2: Guidelines for the application of GB/T 21109.1-2022 (English PDF)

过程工业领域安全仪表系统的功能安全第2部分：GB/T 21109.1 - 2022的应用指南

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

March 17, 2023

Implementation date

October 1, 2023

Scope

GB/T 21109.2-2023 is the English-translated version of 过程工业领域安全仪表系统的功能安全第2部分：GB/T 21109.1 - 2022的应用指南.

GB/T 21109.2-2023 is the Chinese standard "Functional safety of safety instrumented systems for the process industry sector - Part 2: Guidelines for the application of GB/T 21109.1-2022".

Its scope clause reads: This document provides specifications for safety instrumented functions and related safety instrumented systems defined in GB/T 21109:1-2022, Guidelines for design, installation, operation and maintenance: Note 1: Appendix A (informative) has been sorted out: Except for the symbol "A" in front of the chapter number, the rest are consistent with the corresponding chapter and article numbers in GB/T 21109:1-2022: Note 2: Appendix A contains the materials in the main text of GB/T 21109:2-2007: This is to prevent the situation that the main text of the standard is all informative clauses: Write rules to conform to standards: Note 3: In order to maximize the use of this document: ---When using the guideline of a specific clause, it is also necessary to review the guideline of the corresponding chapter (for example: when viewing the guideline of 5:2:6:1:3, the guideline of 5:2:6 should also be considered); --- When there is no relevant guidance for a specific clause (for example: no further guidance is provided), consider referring back to the chapter guidance when applicable: Note 4: The examples given in the appendix of this document are only specific examples of implementing the requirements of GB/T 21109 in specific situations: Users can choose according to their own conditions: Select appropriate methods and techniques:. Its clauses include terms, definitions and abbreviations.

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Document preview — GB/T 21109.2-2023

National Standard of the People's Republic of China

ICS: 25.040
Classification: N10

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

Preface
Introduction
1 Scope
2 Normative references
3 Terms, Definitions and Abbreviations
Appendix A (Informative) Guidelines 2 of GB/T 21109:1-2
Appendix B (Informative) Example of Developing SIS Logic Solver Application Using Reliability Block Diagram
Appendix C (informative) Notes when converting from NP technology to PE technology
Appendix D (informative)

1 Scope

This document provides specifications for safety instrumented functions and related safety instrumented systems defined in GB/T 21109:1-2022,

Guidelines for design, installation, operation and maintenance:

Note 1: Appendix A (informative) has been sorted out: Except for the symbol "A" in front of the chapter number, the rest are consistent with the corresponding chapter and article numbers in GB/T 21109:1-2022:

Note 2: Appendix A contains the materials in the main text of GB/T 21109:2-2007: This is to prevent the situation that the main text of the standard is all informative clauses:

Write rules to conform to standards:

Note 3: In order to maximize the use of this document:

---When using the guideline of a specific clause, it is also necessary to review the guideline of the corresponding chapter (for example: when viewing the guideline of 5:2:6:1:3, the guideline of 5:2:6 should also be considered);

--- When there is no relevant guidance for a specific clause (for example: no further guidance is provided), consider referring back to the chapter guidance when applicable:

Note 4: The examples given in the appendix of this document are only specific examples of implementing the requirements of GB/T 21109 in specific situations: Users can choose according to their own conditions:

Select appropriate methods and techniques:

2 Normative references

The contents of the following documents constitute the essential provisions of this document through normative references in the text: Among them, dated references,

Only the version corresponding to the date applies to this document; for undated references, the latest version (including all amendments) applies to this document:

GB/T 21109:1-2022 Functional safety of safety instrumented systems in the process industry - Part 1 Framework, definition, system, hardware

Software and application programming requirements (IEC 61511-1:2016, IDT)

3 Terms, Definitions and Abbreviations

The terms, definitions and abbreviations defined in GB/T 21109:1-2022 apply to this document:

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 144 pages — is available in the English PDF.

Referenced standards

Normative references

GB/T 21109 · IEC 61511

Cited by

JB/T 11961-2014Industrial Communication Networks - Network and System Security - Terminology, Concepts and Models

Similar standards

GB 38031-2025|GB/T 21109.1|GB/T 21109.2|GB/T 21109.2-2007|GB/T21109.2-2023|GB/T 21109|GB/T 1|GB/T 20438

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