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GB/T 34590.9-2022 English PDF (GBT34590.9-2022)

GB/T 34590.9-2022 English PDF (GBT34590.9-2022)

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GB/T 34590.9-2022: Road vehicles -- Functional safety -- Part 9: Automotive safety integrity level(ASIL)-oriented and safety-oriented analyses

GB/T 34590.9-2022
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 43.040
CCS T 35
Replacing GB/T 34590.9-2017
Road Vehicles - Functional Safety - Part 9: Automotive
Safety Integrity Level (ASIL)-oriented and Safety-oriented
Analyses
(ISO 26262-1:2018, MOD)
ISSUED ON: DECEMBER 30, 2022
IMPLEMENTED ON: JULY 1, 2023
Issued by: State Administration for Market Regulation;
Standardization Administration of the People’s Republic of China.
Table of Contents
Foreword ... 4
Introduction ... 8
1 Scope ... 12
2 Normative references ... 13
3 Terms and definitions ... 14
4 Requirements ... 14
4.1 Purpose... 14
4.2 General requirements ... 14
4.3 Interpretations of tables ... 15
4.4 ASIL-dependent requirements and recommendations ... 16
4.5 Adaptation for motorcycles ... 16
4.6 Adaptation for goods vehicles, buses, special vehicles, and trailers ... 16 5 Requirements decomposition with respect to ASIL tailoring ... 16
5.1 Objectives ... 16
5.2 General rules ... 17
5.3 Inputs to this chapter ... 17
5.4 Requirements and recommendations ... 18
5.5 Work products ... 22
6 Criteria for coexistence of elements ... 22
6.1 Objectives ... 22
6.2 General rules ... 22
6.3 Inputs to this chapter ... 23
6.4 Requirements and recommendations ... 23
6.5 Work products ... 24
7 Analysis of dependent failures ... 24
7.1 Objectives ... 24
7.2 General rules ... 24
7.3 Inputs to this chapter ... 26
7.4 Requirements and recommendations ... 27
7.5 Work products ... 29
8 Safety analyses ... 29
8.1 Objectives ... 29
8.2 General rules ... 30
8.3 Inputs to this chapter ... 31
8.4 Requirements and recommendations ... 32
8.5 Work products ... 34
Appendix A (Informative) Overview of Automotive Safety Integrity Level (ASIL)- oriented and safety-oriented analyses ... 35
Appendix B (Informative) Example architectures for Coexistence of elements and Decomposition of requirements ... 38
Appendix C (Informative) Framework for Identifying Dependent Failures ... 40 References ... 45
Foreword
This document was drafted in accordance with the rules provided in GB/T 1.1-2020 Directives for Standardization - Part 1: Rules for the Structure and Drafting of Standardizing Documents.
This document is Part 9 of GB/T 34590 Road Vehicles - Functional Safety. GB/T 34590 has issued the following parts:
-- Part 1: Vocabulary;
-- Part 2: Management of Functional Safety;
-- Part 3: Concept Phase;
-- Part 4: Product Development at the System Level;
-- Part 5: Product Development at the Hardware Level;
-- Part 6: Product Development at the Software Level;
-- Part 7: Production, Operation, Service and Decommissioning;
-- Part 8: Supporting Processes;
-- Part 9: Automotive Safety Integrity Level (ASIL)-oriented and Safety-oriented Analyses;
-- Part 10: Guideline;
-- Part 11: Guidelines on Applications to Semiconductors;
-- Part 12: Adaptation for Motorcycles.
This document serves as a replacement for GB/T 34590.9-2017 Road Vehicles - Functional Safety - Part 9: Automotive Safety Integrity Level (ASIL)-oriented and Safety-oriented Analyses. In comparison with GB/T 34590.9-2017, apart from structural adjustments and editorial modifications, the main technical changes are as follows:
-- The scope of application of the standard is revised from “mass-produced passenger cars” to “mass-produced road vehicles other than mopeds” (see Chapter 1; see Chapter 1 of the 2017 edition);
-- The adaptation requirements for motorcycles are added (see 4.5);
-- The adaptation requirements for goods vehicles, buses, special vehicles, and trailers are added (see 4.6);
-- The objectives of requirements decomposition on ASIL tailoring are changed (see 5.1; see 5.1 of the 2017 edition);
-- The general rules of the requirements decomposition on ASIL tailoring are changed (see 5.2; see 5.2 of the 2017 edition);
-- The contents that the initial safety requirements shall be decomposed into redundant safety requirements are changed (see 5.4.3; see 5.4.3 of the 2017 edition);
-- The contents that each decomposed safety requirement shall comply with the initial safety requirement by itself are changed (see 5.4.4; see 5.4.4 of the 2017 edition);
-- The content “If the violation of an initial safety requirement cannot be prevented by switching off the element, then adequate availability of the sufficiently independent elements implementing the decomposed safety requirements shall be shown” is deleted (see 5.4.8 of the 2017 edition);
-- The general rules of the criteria for the coexistence of elements are changed (see 6.2; see 6.2 of the 2017 edition);
-- The content “the safety requirements shall be assigned to sub-elements of elements before the application of this chapter” is deleted (see 6.4.2 of the 2017 edition);
-- The contents “If sub-elements implementing requirements with different ASILs coexist in the same element” are changed (see 6.4.4; see 6.4.5 of the 2017 edition);
-- The objectives of dependent failure analysis are changed (see 7.1; see 7.1 of the 2017 edition);
-- The general rules of dependent failure analysis are changed (see 7.2; see 7.2 of the 2017 edition);
-- The prerequisites for dependent failure analysis are changed (see 7.3.1; see 7.3.1 of the 2017 edition);
-- The “repair error” is changed to “service failure” [see 7.4.4 e); see 7.4.4 e) of the 2017 edition];
-- The content “ageing and wear” is added [see 7.4.4 i)];
-- The requirement for the level of detail and rigor of dependent failure analysis is added (see 7.4.8);
-- The verification basis requirements for dependent failure analysis are added (see 7.4.9);
-- The dependent failure analysis verification report is added (see 7.5.2); -- The objectives of safety analysis are changed (see 8.1; see 8.1 of the 2017 edition);
-- The requirements and recommendations for safety analysis are changed (see 8.4.1; see 8.4.1 of the 2017 edition);
-- The safety analysis verification report is added (see 8.5.2).
This document is modified in relation to ISO 26262-9:2018 Road Vehicles - Functional safety - Part 9: Automotive Safety Integrity Level (ASIL)-oriented and Safety-oriented Analyses.
The technical differences between this document and ISO 26262-9:2018, and the causes for these differences are as follows:
-- The description of T and B vehicles is changed from “trucks, buses, trailers, and semi-trailers” to “goods vehicles, buses, special vehicles, and trailers” (see 4.6; see 4.6 of ISO 26262-9:2018), so that the vehicle types are consistent with that specified in GB/T 3730.1-2022 Terms and Definitions of Motor Vehicles,
Trailers and Combination Vehicle - Part 1: Types.
This document also makes the following editorial modifications:
-- The order of paragraphs in the Scope is adjusted;
-- The normatively referenced GB/T 34590.12-2022 is included in the list in Chapter 2;
-- The addresses of the terminology database maintained by ISO and IEC for standardization in Chapter 3 of ISO 26262-9:2018 are deleted;
-- The clause number 6.5.1 in ISO 26262-9:2018 is deleted.
Please be noted that certain content of this document may involve patents. The institution issuing this document does not undertake the responsibility of identifying these patents.
This document was proposed by the Ministry of Industry and Information Technology of the People’s Republic of China.
This document shall be under the jurisdiction of the National Technical Committee of Auto Standardization (SAC/TC114).
Road Vehicles - Functional Safety - Part 9: Automotive
Safety Integrity Level (ASIL)-oriented and Safety-oriented
Analyses
1 Scope
This document specifies the requirements for Automotive Safety Integrity Level (ASIL)-oriented and safety-oriented analyses, including the following:
-- requirements decomposition with respect to ASIL tailoring;
-- criteria for coexistence of elements;
-- analysis of dependent failures; and
-- safety analyses.
This document is intended to be applied to safety-related systems that include one or more electrical and/or electronic (E/E) systems and that are installed in series production road vehicles, excluding mopeds.
This document does not address unique E/E systems in special vehicles such as E/E systems designed for drivers with disabilities.
NOTE: Other dedicated application-specific safety standards can complement this document or vice versa.
Systems and their components released for production, or systems and their components already under development prior to the publication date of this document, are exempted from the scope of this edition. This document addresses alterations to existing systems and their components released for production prior to the publication of this document by tailoring the safety lifecycle depending on the alteration. This document addresses integration of existing systems not developed according to this document and systems developed according to this document by tailoring the safety lifecycle according to this document.
This document addresses possible hazards caused by malfunctioning behaviour of safety-related E/E systems, including interaction of these systems. It does not address hazards related to electric shock, fire, smoke, heat, radiation, toxicity, flammability, reactivity, corrosion, release of energy and similar hazards, unless directly caused by malfunctioning behaviour of safety-related E/E systems.
This document describes a framework for functional safety to assist the development of safety-related E/E systems. This framework is intended to be used to integrate functional safety activities into a company-specific development framework. Some requirements have a clear technical focus to implement functional safety into a product; others address the development process and can therefore be seen as process requirements in order to demonstrate the capability of an organization with respect to functional safety.
This document does not address the nominal performance of E/E systems.
Appendix A provides an overview on objectives, prerequisites and work products of this document.
2 Normative references
The following documents contain the provisions which, through normative reference in this document, constitute the essential provisions of this document. For the dated referenced documents, only the versions with the indicated dates are applicable to this document; for the undated referenced documents, only the latest version (including all the amendments) is applicable to this document.
GB/T 34590.1-2022 Road Vehicles - Functional Safety - Part 1: Vocabulary (ISO 26262-1:2018, MOD)
NOTE: There is no technical difference between the quoted content of GB/T 34590.1-2022 and the referenced content of ISO 26262-1:2018.
GB/T 34590.2-2022 Road Vehicles - Functional Safety - Part 2: Management of Functional Safety (ISO 26262-2:2018, MOD)
NOTE: There is no technical difference between the quoted content of GB/T 34590.2-2022 and the quoted content of ISO 26262-2:2018.
GB/T 34590.3-2022 Road Vehicles - Functional Safety - Part 3: Concept Phase (ISO 26262-3:2018, MOD)
NOTE: There is no technical difference between the quoted content of GB/T 34590.3-2022 and the quoted content of ISO 26262-3:2018.
GB/T 34590.4-2022 Road Vehicles - Functional Safety - Part 4: Product Development at the System Level (ISO 26262-4:2018, MOD)
NOTE: There is no technical difference between the quoted content of GB/T 34590.4-2022 and the quoted content of ISO 26262-4:2018.
GB/T 34590.5-2022 Road Vehicles - Functional Safety - Part 5: Product Development at the Hardware Level (ISO 26262-5:2018, MOD)
NOTE: There is no technical difference between the quoted content of GB/T 34590.5-2022 and the quoted content of ISO 26262-5:2018.
GB/T 34590.6-2022 Road Vehicles - Functional Safety - Part 6: Product Development at the Software Level (ISO 26262-6:2018, MOD)
NOTE: There is no technical difference between the quoted content of GB/T 34590.6-2022 and the quoted content of ISO 26262-6:2018.
GB/T 34590.8-2022 Road Vehicles - Functional Safety - Part 8: Supporting Processes (ISO 26262-8:2018, MOD)
NOTE: There is no technical difference between the quoted content of GB/T 34590.8-2022 and the quoted content of ISO 26262-8:2018.
GB/T 34590.12-2022 Road Vehicles - Functional Safety - Part 12: Adaptation for Motorcycles (ISO 26262-12:2018, MOD)
NOTE: There is no technical difference between the quoted content of GB/T 34590.12-2022 and the quoted content of ISO 26262-12:2018.
3 Terms and definitions
The terms and definitions defined in GB/T 34590.1-2022 apply to this document. 4 Requirements
4.1 Purpose
This chapter describes how:
a) to achieve compliance with the GB/T 34590;
b) to interpret the tables used in the GB/T 34590; and
c) to interpret the applicability of each clause, depending on the relevant ASIL(s). 4.2 General requirements
When claiming compliance with the GB/T 34590, each requirement shall be met, unless one of the following applies:
a) tailoring of the safety activities in accordance with GB/T 34590.2-2022 has been performed that shows that the requirement does not apply; or
b) a rationale is available that the non-compliance is acceptable and the rationale has been evaluated in accordance with GB/T 34590.2-2022.
analysis is to be performed: system, hardware, or software in accordance with 7.5.2 in GB/T 34590.4-2022, 7.5.1 in GB/T 34590.5-2022, or 7.5.1 in GB/T 34590.6-2022.
NOTE: The architectural information is used to determine the boundaries of the safety analyses. 8.3.2 Further supporting information
The following information can be considered:
-- fault models (from external sources).
8.4 Requirements and recommendations
8.4.1 The safety analyses shall be performed in accordance with appropriate standards or guidelines and the defined objectives, for instance in the safety plan. NOTE 1: The level of detail of the analysis is appropriate to the level of detail of the design. The fault models depend on the description level of the design on which the analysis is based (System, Hardware, Software), and on the safety requirements being implemented. For semiconductor failure modes, 4.3.2 of GB/T 34590.11-2022 can be considered.
NOTE 2: Such standards and guidelines can include criteria for defining the depth and rigor of a safety analysis. These criteria can depend on the ASIL, complexity or experiences with a specific item, and its field of application.
NOTE 3: The objectives and scope of the safety analyses depend on the sub-phase and the level of granularity at which it is applied.
8.4.2 The results of the safety analyses shall indicate if the respective safety goals or safety requirements are complied with or not.
8.4.3 If a safety goal or a safety requirement is not complied with, the results of the safety analyses shall be used for deriving prevention, detection, or effect mitigation measures regarding the faults or failures causing the violation.
8.4.4 The measures derived from the safety analyses shall be implemented as part of the product development at the system level, at the hardware level, or at the software level, in accordance with GB/T 34590.4-2022, or GB/T 34590.5-2022, or GB/T 34590.6-2022 respectively.
8.4.5 Hazards newly identified by safety analyses during product development which are not already covered shall be included in an updated hazard analysis and risk assessment according to Chapter 6 of GB/T 34590.3-2022. The corresponding changes shall be managed in accordance with Chapter 8 of GB/T 34590.8-2022.
8.4.6 The fault models used for the safety analyses shall be suitable for the level of detail being analysed in a given development sub-phase and shall be used consistently

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