GB/T 20438.7-2017Functional safety of electrical/electronic/programmable electronic safety-related systems -- Part 7: Overview of techniques and measures (English PDF)
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Issued by
General Administration of Quality Supervision, Inspection and Quarantine
Level / Type
National · Recommended
Issue date
December 29, 2017
Implementation date
July 1, 2018
Scope
GB/T 20438.7-2017 (Functional safety of electrical/electronic/programmable electronic safety-related systems -- Part 7: Overview of techniques and measures) is available as an English-translated PDF.
GB/T 20438.7-2017 is the Chinese standard "Functional safety of electrical/electronic/programmable electronic safety-related systems -- Part 7: Overview of techniques and measures".
Its scope clause reads: Figure 1 shows the overall framework for GB/T 20438 and indicates the role that this Part plays in the achievement of functional safety for E/E/PE safety- related systems. Its clauses include definitions and abbreviations.
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Document preview — GB/T 20438.7-2017
National Standard of the People's Republic of China
- ICS
- 25.040
- Classification
- N 10
Issued by: General Administration of Quality Supervision, Inspection and Quarantine
Contents
- Foreword3
- Introduction5
- 1 Scope8
- 2 Normative references9
- 3 Definitions and abbreviations10
- related systems. control of random hardware failures (see GB/T 20438.2)11
- 20438.3)33
- software safety integrity (see GB/T 20438.3)69
- integrity for pre-developed software138
- ASICs144
- oriented software169
- Bibliography171
- Index174
1 Scope
Figure 1 shows the overall framework for GB/T 20438 and indicates the role that this Part plays in the achievement of functional safety for E/E/PE safety- related systems.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 20438.4-2017, Functional safety of electrical/electronic/programmable electronic safety related systems - Part 4.Definitions and abbreviations (IEC 61508-4.2010, IDT)
3 Definitions and abbreviations
For the purposes of this document, the definitions and abbreviations given in
GB/T 20438.4-2017 apply.
Annex A (informative)
Overview of techniques and measures for E/E/PE safety-related systems. control of random hardware failures (see GB/T 20438.2)
Global objective. To control failures in electromechanical components.
Annex B (informative)
Overview of techniques and measures for E/E/PE safety related systems. avoidance of systematic failures (see GB/T 20438.2 and GB/T 20438.3)
Annex C (informative)
Overview of techniques and measures for achieving software safety integrity (see GB/T 20438.3)
Annex D (informative)
A probabilistic approach to determining software safety integrity for pre- developed software
Annex E (informative)
Overview of techniques and measures for design of ASICs
NOTE. The overview of techniques and measures contained in this annex and referenced by GB/T 20438.2-2017.This annex should not be regarded as either complete or exhaustive.
Annex F (informative)
Definitions of properties of software lifecycle phases
Annex G (informative)
Guidance for the development of safety-related object-oriented software
All of the recommendations of GB/T 20438 for software design apply to object- oriented software. Because the object-oriented approach presents information differently from procedural or functional approaches, the following list contains those recommendations that need specific consideration.
GB/T 20438.4-2017 | GB/T 20438.5-2017 | GB/T 20438.6-2017 | GB/T 20438.3-2017 | […]
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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 10 pages — is available in the English PDF.
Referenced standards
Normative references
Cited by
- GB/T 35850.1-2018Programmable electronic systems in safety-related applications for lifts (elevators), escalators and moving walks -- Part 1: Lifts (elevators) (PESSRAL)
- GB/T 35857-2018Safety rules for the construction and installation of electric lifts with inclined path
- NB/T 25019-2014Technical specification for turbine instrument and control of nuclear power plant
- CJ/T 421-2013Electronic controller of household gas burning appliances
- GB/Z 29638-2013Functional safety of electrical/electronic/programmable electronic safety-related systems -- Functional safety and GB/T 20438
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Related Standards
GB/T 20438.4-2017 — Functional safety of electrical/electronic/programmable electronic safety-related systems -- Part 4: Definitions and abbreviations
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
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GB/T 20438.7-2017
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