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GB/T 20438.1-2017 English PDF

GB/T 20438.1-2017 (GB/T20438.1-2017, GBT 20438.1-2017, GBT20438.1-2017)
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GB/T 20438.1-2017English465 Add to Cart 0--9 seconds. Auto-delivery Functional safety of electrical/electronic/programmable electronic safety-related systems -- Part 1: General requirements Valid GB/T 20438.1-2017

Standard ID GB/T 20438.1-2017 (GB/T20438.1-2017)
Description (Translated English) Functional safety of electrical/electronic/programmable electronic safety-related systems -- Part 1: General requirements
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard N10
Classification of International Standard 25.040
Word Count Estimation 54,553
Date of Issue 2017-12-29
Date of Implementation 2018-07-01
Older Standard (superseded by this standard) GB/T 20438.1-2006
Drafting Organization Machinery Industry Instrumentation Technology and Economy Institute, Beijing Guodian Zhishen Control Technology Co., Ltd., China Academy of Safety Sciences, Shanghai Institute of Industrial Automation Instrumentation, Hangzhou Hollysys Automation Co., Ltd., Omron Automation (China) Co., Ltd., Siemens (China) Co., Ltd., Shanghai Shanghai Electronics Co., Ltd.
Administrative Organization National Industrial Process Measurement Control and Automation Standardization Technical Committee (SAC/TC 124)
Regulation (derived from) National Standard Announcement 2017 No. 32
Proposing organization China Machinery Industry Federation
Issuing agency(ies) People's Republic of China General Administration of Quality Supervision, Inspection and Quarantine, China National Standardization Administration

Standards related to: GB/T 20438.1-2017

GB/T 20438.1-2017
ICS 25.040
N 10
GB/T 20438.1-2017 / IEC 61508-1:2010
Replacing GB/T 20438.1-2006
Functional safety of electrical / electronic /
programmable electronic safety-related systems - Part
1: General requirements
(IEC 61508-1:2010, IDT)
Issued by: General Administration of Quality Supervision, Inspection
and Quarantine;
Standardization Administration of the People’s Republic of
Table of Contents
1 Scope ... 9 
2 Normative references ... 12 
3 Definitions and abbreviations ... 13 
4 Conformance to GB/T 20438 ... 13 
5 Documentation ... 14 
5.1 Objectives ... 14 
5.2 Requirements ... 14 
6 Management of functional safety ... 16 
6.1 Objectives ... 16 
6.2 Requirements ... 16 
7 Overall safety lifecycle requirements ... 21 
7.1 General ... 21 
7.2 Concept ... 31 
7.3 Overall scope definition ... 31 
7.4 Hazard and risk analysis ... 32 
7.5 Overall safety requirements ... 35 
7.6 Overall safety requirements allocation ... 38 
7.7 Overall operation and maintenance planning ... 46 
7.8 Overall safety validation planning ... 49 
7.9 Overall installation and commissioning planning ... 50 
7.10 E/E/PE system safety requirements specification ... 52 
7.11 E/E/PE safety-related systems - realisation ... 55 
7.12 Other risk reduction measures - specification and realisation ... 56 
7.13 Overall installation and commissioning ... 56 
7.14 Overall safety validation ... 57 
7.15 Overall operation, maintenance and repair ... 58 
7.16 Overall modification and retrofit ... 62 
7.17 Decommissioning or disposal ... 65 
7.18 Verification ... 67 
8 Functional safety assessment ... 68 
8.1 Objective ... 68 
8.2 Requirements ... 68 
Annex A (Informative) Example of a documentation structure ... 74 
Bibliography ... 80 
GB/T 20438 "Functional safety of electrical/electronic/programmable electronic
safety-related systems” is divided into seven parts:
-- Part 1: General requirements;
-- Part 2: Requirements for electrical/electronic/programmable electronic
safety-related systems;
-- Part 3: Software requirements;
-- Part 4: Definitions and abbreviations;
-- Part 5: Examples of methods for the determination of safety integrity levels;
-- Part 6: Guidelines on the application of GB/T 20438.2 and GB/T 20438.3;
-- Part 7: Overview of techniques and measures;
This Part is Part 1 of GB/T 20438.
This Part was drafted in accordance with the rules given in GB/T 1.1-2009.
This Part replaces GB/T 20438.1-2006 "Functional safety of
electrical/electronic/programmable electronic safety-related systems - Part 1:
General requirements". Compared with GB/T 20438.1-2006, the major
technical changes are as follows:
-- Add the requirements for the competence of persons in management of
functional safety (see Clause 6);
-- Add the E/E/PE system safety requirements specification phase in the
overall safety lifecycle (see 7.10);
-- Modify the evaluation method for evaluating independence (see Clause 8).
This Part uses the translation method to equivalently adopt IEC 61508-1:2010
"Functional safety of electrical/electronic/programmable electronic safety-
related systems - Part 1: General requirements".
This Part was proposed by China Mechinery Industry Federation.
This Standard shall be under the jurisdiction of National Technical Committee
124 on Industrial Process Measurement and Control of Standardization
Administration of China (SAC/TC 124).
Functional safety of
electrical/electronic/programmable electronic safety-
related systems - Part 1: General requirements
1 Scope
1.1 GB/T 20438 covers those aspects to be considered when
electrical/electronic/programmable electronic (E/E/PE) systems are used to
carry out safety functions. A major objective of GB/T 20438 is to facilitate the
development of product and application sector national standards by the
technical committees responsible for the product or application sector. This will
allow all the relevant factors, associated with the product or application, to be
fully taken into account and thereby meet the specific needs of users of the
product and the application sector. A second objective of GB/T 20438 is to
enable the development of E/E/PE safety-related systems where product or
application sector national standards do not exist.
1.2 In particular, GB/T 20438
a) applies to safety-related systems when one or more of such systems
incorporates electrical/electronic/programmable electronic elements;
NOTE 1: In the context of low complexity E/E/PE safety-related systems,
certain requirements specified in GB/T 20438 may be unnecessary,
and exemption from compliance with such requirements is possible
(see 4.2, and the definition of a low complexity E/E/PE safety-related
system in 3.4.3 of GB/T 20438.4-2017).
NOTE 2: Although a person can form part of a safety-related system (see 3.4.1
of GB/T 20438.4-2017), human factor requirements related to the
design of E/E/PE safety-related systems are not considered in detail
in GB/T 20438.
b) is generically-based and applicable to all E/E/PE safety-related systems
irrespective of the application;
c) covers the achievement of a tolerable risk through the application of
E/E/PE safety-related systems, but does not cover hazards arising from
the E/E/PE equipment itself (for example electric shock);
d) applies to all types of E/E/PE safety-related systems, including protection
systems and control systems;