GB/T 20438.4-2017Functional safety of electrical/electronic/programmable electronic safety-related systems -- Part 4: Definitions and abbreviations (English PDF)
电气/电子/可编程电子安全相关系统的功能安全 第4部分：定义和缩略语
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
December 29, 2017
Implementation date
July 1, 2018
Scope
GB/T 20438.4-2017 is the English-translated version of 电气/电子/可编程电子安全相关系统的功能安全 第4部分：定义和缩略语.
GB/T 20438.4-2017 is a Chinese recommended national standard. Its English version is available from this page.
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Document preview — GB/T 20438.4-2017
National Standard of the People's Republic of China
- ICS
- 25.040
Contents
- Foreword4
- Introduction6
- 1 Scope9
- 2 Normative references10
- 3 Definitions and abbreviations11
- 3.1 Safety terms12
- 3.2 Equipment and devices14
- 3.3 Systems - general aspects19
- 3.4 Systems - safety-related aspects22
- 3.5 Safety functions and safety integrity24
- 3.6 Fault, failure and error (see Figure 4)28
- 3.7 Lifecycle activities36
- 3.8 Confirmation of safety measures37
- Bibliography42
- Index44
- Foreword4
- Introduction6
- 1 Scope9
- 2 Normative references10
- 3 Definitions and abbreviations11
- 3.1 Safety terms12
- 3.2 Equipment and devices14
- 3.3 Systems - general aspects19
- 3.4 Systems - safety-related aspects22
- 3.5 Safety functions and safety integrity24
- 3.6 Fault, failure and error (see Figure 4)28
- 3.7 Lifecycle activities36
- 3.8 Confirmation of safety measures37
- Bibliography42
- Index44
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The English PDF of this standard, delivered to your email address.
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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 44 pages — is available in the English PDF.
Referenced standards
Cited by
- GB/T 32857-2025Application directives for layer of protection analysis (LOPA)
- GB/T 46933.4-2025Safety and security integration of smart factories - Part 4: System evaluation requirements
- GB/T 3836.36-2022Explosive atmospheres - Part 36: Electrical safety devices for the control of potential ignition sources from Ex Equipment
- GB/T 41257-2022Functional safety requirements for digital factory
- GB/T 41295.1-2022Application guide of functional safety—Part 1: Hazard identification and requirements analysis
- GB/T 41295.2-2022Application guide of functional safety—Part 2:Design and realisation
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Related Standards
GB/T 20438.1-2017 — Functional safety of electrical/electronic/programmable electronic safety-related systems -- Part 1: General requirements
GB/T 20438.2-2017 — Functional safety of electrical/electronic/programmable electronic safety-related systems -- Part 2: Requirements for electrical/electronic/programmable electronic safety-related systems
GB/T 20438.3-2017 — Functional safety of electrical/electronic/programmable electronic safety-related systems -- Part 3: Software requirements
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GB/T 20438.4-2017
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