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GB/T 20438.6-2017 PDF English

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GB/T 20438.6-2017: Functional safety of electrical/electronic/programmable electronic safety-related systems -- Part 6: Guidelines on the application of GB/T 20438.2 and GB/T 20438.3
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GB/T 20438.6: Evolution and historical versions

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GB/T 20438.6-2017English1395 Add to Cart 0-9 seconds. Auto-delivery Functional safety of electrical/electronic/programmable electronic safety-related systems -- Part 6: Guidelines on the application of GB/T 20438.2 and GB/T 20438.3 Valid
GB/T 20438.6-2006EnglishRFQ ASK 5 days Functional safety of electrical/electronic/programmable electronic safety-related systems -- Part 6: Guidelines on the application of GB/T 20438.2 and GB/T 20438.3 Obsolete

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GB/T 20438.6-2017: Functional safety of electrical/electronic/programmable electronic safety-related systems -- Part 6: Guidelines on the application of GB/T 20438.2 and GB/T 20438.3


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GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 25.040 N 10 GB/T 20438.6-2017 / IEC 61508-6.2010 Replacing GB/T 20438.6-2006 Functional Safety of Electrical / Electronic / Programmable Electronic Safety-related Systems - Part 6.Guidelines on the Application of GB/T 20438.2 and GB/T 20438.3 (IEC 61508-6.2010, Functional Safety of Electrical / Electronic / Programmable Electronic Safety-related Systems - Part 6.Guidelines on the Application of IEC 61508-2 and IEC 61508-3, IDT) Issued on. DECEMBER 29, 2017 Implemented on. JULY 1, 2018 Issued by. General Administration of Quality Supervision, Inspection and Quarantine; Standardization Administration of the People’s Republic of China.

Table of Contents

Foreword... 3 Introduction... 5 1 Scope... 8 2 Normative References... 10 3 Definitions and Abbreviations... 10 Annex A (informative) Application of GB/T 20438.2 and GB/T 20438.3... 11 Annex B (informative) Example of Technique for Evaluating Probabilities of Hardware Failure... 22 Annex C (informative) Calculation of Diagnostic Coverage and Safe Failure Fraction - Worked Example... 99 Annex D (informative) A Methodology for Quantifying the Effect of Hardware- related Common Cause Failures in E/E/PE Systems... 103 Annex E (informative) Example Applications of Software Safety Integrity Tables of GB/T 20438.3... 124 Bibliography... 140

Foreword

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 is Part 6 of GB/T 20438. This Part was drafted in accordance with the rules provided in GB/T 1.1-2009. This Part serves as a replacement of GB/T 20438.6-2006 Functional Safety of Electrical / Electronic / Programmable Electronic Safety-related Systems - Part 6. Guidelines on the Application of GB/T 20438.2 and GB/T 20438.3.In comparison with GB/T 20438.6-2006, the main technical changes are as follows. ---Methods of evaluating the probability of hardware failure, such as. fault tree, Markov model and Petri net model are added (see Annex B); ---The method of the common cause failure factors of different structures is added (see Annex D.7). This Part uses the translation method in the equivalent adoption of IEC 61508-6.2010 Functional Safety of Electrical / Electronic / Programmable Electronic Safety-related Systems - Part 6.Guidelines on the Application of IEC 61508-2 and IEC 61508-3. This Part makes the following editorial modification. ---In order to be consistent with the current standard series, the title of the standard is modified into. Functional Safety of Electrical / Electronic / Programmable Electronic Safety-related Systems - Part 6.Guidelines on the Application of GB/T 20438.2 and GB/T 20438.3. This Part was proposed by China Machinery Industry Federation. This Part shall be under the jurisdiction of National Technical Committee 124 on Industrial Process Measurement and Control of Standardization Administration of China (SAC/TC 124). The drafting organizations of this Part. Instrumentation Technology and Economy Institute, P.R. China; Beijing Guodian Zhishen Control Technology Co., Ltd.; Beijing HollySys System Engineering Co., Ltd.; Shanghai Heima Security Automation System Co., Ltd.; Pilz Industrial Automation Trading (Shanghai) Co., Ltd.; YOKOGAWA (China) Co., Ltd.; Shanghai Institute of Process Automation & Instrumentation; Shanghai ZONHO Electronic Technology Research and Design Institute; SIEMENS (China) Co., Ltd. The main drafters of this Part. Shi Xueling, Xiong Wenze, Pan Gang, Yang Liu, Huang Zhijiong, Li Jiajia, Zhou Youzheng, Jiang Xuelian, Qian Datao, Feng Xiaosheng, Luo An, Li Jia, Liu Xiaodong, Fang Laihua, Tian Yucong, Gu Zheng, Lu Yi, Mei Hao, Xu Peng, Shen Tao. The issuing of the previous version. ---GB/T 20438.6-2006.

1 Scope

One of the responsibilities of a technical committee is, wherever applicable, to make use of basic safety publications in the preparation of its publications. In this context, the requirements, test methods or test conditions of this basic safety publication will not apply unless specifically referred to or included in the publications prepared by those technical committees.

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 20438.2-2017 Functional Safety of Electrical / Electronic / Programmable Electronic Safety-related Systems - Part 2.Requirements for Electrical / Electronic / Programmable Electronic Safety-related Systems (IEC 61805-2.2010, 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) Application of GB/T 20438.2 and GB/T 20438.3

Annex B

(informative) Example of Technique for Evaluating Probabilities of Hardware Failure B.1 General This annex provides possible techniques for calculating the probabilities of hardware failure for E/E/PE safety-related systems installed in accordance with GB/T 20438.1, GB/T 20438.2 and GB/T 20438.3. ......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.


      

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