1、 IEC/TR 62267-2 Edition 1.0 2011-03 TECHNICAL REPORT Railway applications Automated urban guided transport (AUGT) Safety requirements Part 2: Hazard analysis at top system level IEC/TR 62267-2:2011(E) THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2011 IEC, Geneva, Switzerland All rights reserved
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10、 62267-2 Edition 1.0 2011-03 TECHNICAL REPORT Railway applications Automated urban guided transport (AUGT) Safety requirements Part 2: Hazard analysis at top system level INTERNATIONAL ELECTROTECHNICAL COMMISSION S ICS 45.060 PRICE CODE ISBN 978-2-88912-423-7 Registered trademark of the Internationa
11、l Electrotechnical Commission 2 TR 62267-2 IEC:2011(E) CONTENTS FOREWORD . 3 INTRODUCTION . 5 1 Scope . 6 2 Normative references . 6 3 Terms and definitions . 6 4 Definition of the system and basic functions . 6 4.1 AUGT system 6 4.2 AUGT basic functions 6 5 Methodology of the present hazard analysi
12、s . 7 5.1 General . 7 5.2 Hazard identification 7 5.3 Cause identification . 7 5.4 Trigger identification 7 5.5 Hazardous situation . 7 5.6 Accident 7 5.7 Result of the hazard analysis 7 5.8 Reference to IEC 62267 8 6 Structure of hazard analysis table. 8 6.1 General . 8 6.2 Hazards associated with
13、“ensuring safe movement of trains” . 8 6.3 Hazards associated with “driving” 8 6.4 Hazards associated with “supervising guideway” . 8 6.5 Hazards associated with “supervising passenger transfer” . 9 6.6 Hazards associated with “operating a train” . 9 6.7 Hazards associated with “ensuring detection a
14、nd management of emergency situations” . 9 7 Risk analysis for a specific application 9 8 AUGT hazard analysis table . 10 Table 1 Hazard analysis table 10 TR 62267-2 IEC:2011(E) 3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ RAILWAY APPLICATIONS AUTOMATED URBAN GUIDED TRANSPORT (AUGT) SAFETY REQUIREM
15、ENTS Part 2: Hazard analysis at top system level FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international co-operation o
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26、s. However, a technical committee may propose the publication of a technical report when it has collected data of a different kind from that which is normally published as an International Standard, for example “state of the art“. IEC 62267-2, which is a technical report, has been prepared by IEC te
27、chnical committee 9: Electrical equipment and systems for railways. 4 TR 62267-2 IEC:2011(E) The text of this technical report is based on the following documents: Enquiry draft Report on voting 9/1390/DTR 9/1423A/RVC Full information on the voting for the approval of this technical report can be fo
28、und in the report on voting indicated in the above table. This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. A list of all parts of IEC 62267 series, under the general title Railway applications Automated urban guided transport (AUGT) Safety requirements, can be fou
29、nd on the IEC website. The committee has decided that the contents of this publication will remain unchanged until the stability date indicated on the IEC web site under “http:/webstore.iec.ch“ in the data related to the specific publication. At this date, the publication will be reconfirmed, withdr
30、awn, replaced by a revised edition, or amended. A bilingual version of this publication may be issued at a later date. TR 62267-2 IEC:2011(E) 5 INTRODUCTION This Technical Report publishes the hazard analysis at top system level conducted by members of working group 45 of IEC technical committee 9 i
31、n order to allocate possible safeguards able to compensate for the absence of a driver in the front cabin of the train or attendant staff from the train as mentioned in 4.2 of IEC 62267:2009. The hazard analysis is structured in accordance to basic functions of train operations following Table 1 of
32、IEC 62267:2009 covering the basic hazards of train operations. The hazard analysis tabulates the identified hazards with their associated causes and triggers as well as providing an associated list of possible safeguards able to compensate the absence of operational staff from the front cabin of a t
33、rain. The results of hazard analysis do not state the choice of safeguards or the acceptable level of residual risk which may vary depending on the local safety culture. The choice of a listed safeguard or combination of safeguards, or the choice not to use any safeguard to compensate or mitigate a
34、specific hazard in a specific application depends on the risk tolerability which is to be assessed under the responsibility of the Transport Authority and Safety Regulatory Authority by a specific risk analysis. This technical report, therefore, does not judge whether a safeguard or a combination of
35、 safeguards is necessary. However, this technical report is intended to support Transport Authorities and Safety Regulatory Authorities in hazard identification as well as selecting and combining safeguards as a basis for a specific risk analysis required for any application with regard to their loc
36、al safety culture. IEC 62267 can be seen as a generic guideline specifying detailed safety requirements for safeguards proposed as a result of the present generic hazard analysis for the design of specific AUGT systems. The hazard analysis and the safeguards derived from it, together with their safe
37、ty requirements, are based on experiences gained from design and operation of existing AUGT systems in North America, Europe and Asia. The present generic hazard analysis and the derived safety requirements can be seen and used as part of the lifecycle of the system as defined in IEC 62278, required
38、 for any railway application including AUGT systems. The present hazard analysis covers the required hazard identification as part of risk analysis (lifecycle phase 3) and determination of safety-related system requirements (lifecycle phase 4) on a generic level, which is indispensable for design/im
39、plementation of an AUGT system. Because IEC 62267 specifies safety requirements on a generic level only, a specific risk analysis including specific hazard identification must be conducted. In order to facilitate the process of specific risk analysis and determine system requirements, the present ha
40、zard identification, the list of possible safeguards and the methodology can be used as a guide to verify the conditions of specific system environment. The use of the present hazard analysis and derived methodology can additionally help harmonize the process of specific risk analysis in this field
41、of application. Such a harmonized process has the intention to facilitate the necessary agreements between Transport Authorities and the resulting approval by Safety Regulatory Authorities. 6 TR 62267-2 IEC:2011(E) RAILWAY APPLICATIONS AUTOMATED URBAN GUIDED TRANSPORT (AUGT) SAFETY REQUIREMENTS Part
42、 2: Hazard analysis at top system level 1 Scope This technical report provides a non normative generic hazard analysis at top system level conducted for the development of IEC 62267 for Automated Urban Guided Transport (AUGT) systems. This report is applicable to all systems covered by the scope of
43、IEC 62267. This generic hazard analysis cannot be used for specific applications without taking into account the specific system environment and local safety culture. This generic hazard analysis can be used for specific AUGT systems to support the necessary activities in lifecycle process following
44、 IEC 62278 (RAMS). 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. IEC 622
45、67:2009, Railway applications Automated urban guided transport (AUGT) Safety requirements IEC 62278:2002, Railway applications Specification and demonstration of reliability, availability, maintainability and safety (RAMS) 3 Terms and definitions For the purposes of this document, the terms and defi
46、nitions set out in IEC 62267 apply. 4 Definition of the system and basic functions 4.1 AUGT system The hazard analysis at top system level has been carried out based on a generic system definition which is described in Clause 5 of IEC 62267:2009. This system definition contains the system boundaries
47、 and application conditions as required by IEC 62278. Additionally, entities to be protected (persons with different purposes and behaviours present in the system as well as property) because exposed to possible hazardous situations, have been taken into account as defined in Clause 6 of IEC 62267:2
48、009. 4.2 AUGT basic functions The hazard analysis at top system level has been carried out based on generic basic functions identified in Table 1 of IEC 62267:2009. TR 62267-2 IEC:2011(E) 7 5 Methodology of the present hazard analysis 5.1 General It is the purpose of the hazard analysis to demonstra
49、te that the AUGT application is as safe as applications with drivers. This is the reason that it has been structured following the basic functions of AUGT systems as identified in Table 1 of IEC 62267:2009. 5.2 Hazard identification The column “Hazard” shows the top-level hazards identified. A hazard is considered as a matter of fact present in the system as a result of train operations (e.g. closing and opening of train doors) or possible influences to these opera
