IEC TR 62278-3:2010

Railway applications - Specification and demonstration of reliability, availability, maintainability and safety (RAMS) - Part 3: Guide to the application of IEC 62278 for rolling stock RAM

IEC/TR 62278-3:2010(E) provides guidance on applying the reliability, availability and maintainability (RAM) requirements in IEC 62278 to rolling stock and for dealing with RAM activities during the system life cycle phases from invitation to tender to demonstration in operation only. The technical report is aimed at the customers/operators and main suppliers of rolling stock.
This publication is to be read in conjunction with  IEC 62278:2002.

General Information

• Status: Published
• Publication Date: 20-Apr-2010
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 45.060.01 - Railway rolling stock in general
• Technical Committee: TC 9 - Electrical equipment and systems for railways
• Current Stage: PPUB - Publication issued
• Start Date: 30-Jun-2010
• Completion Date: 21-Apr-2010

Standards Content (Sample)

IEC/TR 62278-3 ®
Edition 1.0 2010-04
TECHNICAL
REPORT
colour
inside
Railway applications – Specification and demonstration of reliability, availability,
maintainability and safety (RAMS) –
Part 3: Guide to the application of IEC 62278 for rolling stock RAM

IEC/TR 62278-3:2010(E)
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IEC/TR 62278-3 ®
Edition 1.0 2010-04
TECHNICAL
REPORT
colour
inside
Railway applications – Specification and demonstration of reliability, availability,
maintainability and safety (RAMS) –
Part 3: Guide to the application of IEC 62278 for rolling stock RAM

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
XB
ICS 45.060 ISBN 978-2-88910-660-8
– 2 – TR 62278-3 © IEC:2010(E)
CONTENTS
FOREWORD.4
INTRODUCTION.6
1 Scope.7
2 Terms and definitions .8
3 Approach adopted for the guide.8
3.1 General .8
3.2 Entities involved in the life cycle phases of rolling stock .8
4 Application of this guide .8
4.1 Object of the application.8
4.2 Application of IEC 62278 .9
4.2.1 Assessment of the application of IEC 62278 .9
4.2.2 Mandatory requirements for the application of IEC 62278 .9
5 Specifying RAM requirements.10
5.1 Introductory remarks .10
5.2 Preliminary RAM analysis.10
5.2.1 General .10
5.2.2 Preliminary RAM analysis activities .11
5.3 RAM requirements.17
5.3.1 General .17
5.3.2 Reliability targets.17
5.3.3 Maintainability targets.18
5.3.4 Availability targets .22
5.4 Process for choosing RAM figures.25
5.5 RAM programme .25
5.5.1 General .25
5.5.2 Configuration management system.26
5.5.3 RAM programme outline .27
5.5.4 Example of RAM analyses document template and data .28
6 RAM assurance during life cycle.42
6.1 RAM programme and phases of the life cycle .42
6.1.1 General .42
6.1.2 Tender phase .43
6.1.3 Design phase .44
6.1.4 Demonstration phase.47
7 RAM parameters to be incorporated into LCC model .50
7.1 General .50
7.2 Overview of LCC modelling .51
7.3 RAM parameters for LCC .51
Annex A (informative) Examples of breakdown structure.53
Bibliography.66

Figure 1 – Example of reliability prediction analysis sheet.30
Figure 2 – Example of preventive maintenance analysis sheet.34
Figure 3 – Example of preventive maintenance sheet for a single frequency.36
Figure 4 – Example of corrective maintenance analysis sheet.38

TR 62278-3 © IEC:2010(E) – 3 –
Figure 5 – Example of items FMECA sheet .40
Figure 6 – Example of functions FMECA sheet .41
Figure 7 – RAM programme and life cycle phases.42
Figure 8 – Possible relationships between customer, main supplier, sub-supplier during
some phases of life cycle for rolling stock .43
Figure 9 – Flow diagram representing activities/documentations of design phase .45
Figure A.1 – Example of physical structure using organisation chart for an Electrical
Multiple Unit Coach.54
Figure A.2 – Example of functional structure using organisation chart for an Electrical
Multiple Unit Coach.55
Figure A.3 – Example of structure using the tree breakdown chart for an EMU
(Electrical Multiple Unit) traction vehicle .56
Figure A.4 – Example of structure using the tree breakdown chart for an EMU
(Electrical Multiple Unit) coach.63

Table 1 – Possible sharing of responsibility .8
Table 2 – Example of minimum set of data of the header for a form representing a
breakdown structure .14
Table 3 – Example of minimum set of data representing a breakdown structure.14
Table 4 – RAM failure categories .15
Table 5 – Significant failure specification .16
Table 6 – Major failure specification.16
Table 7 – Minor failure specification.16
Table 8 – Reliability requirements for failure categories .18
Table 9 – Qualitative requirements for maintainability .20
Table 10 – Preventive/corrective maintenance requirements.21
Table 11 – Logistic support requirements.21
Table 12 – Maintenance cost requirements .22
Table 13 – Availability requirements .24
Table 14 – Example of minimum set of data of the header for RAM analyses template .28
Table 15 – Example of minimum set of data for reliability prediction sheets .29
Table 16 – Example of minimum set of data for preventive maintenance sheets .33
Table 17 – Example of minimum set of data for corrective maintenance sheets .37
Table 18 – Example of minimum set of data for items FMECA sheets .39
Table 19 – Description of the main tasks of design phase .46

– 4 – TR 62278-3 © IEC:2010(E)
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
RAILWAY APPLICATIONS –
SPECIFICATION AND DEMONSTRATION OF RELIABILITY,
AVAILABILITY, MAINTAINABILITY AND SAFETY (RAMS) –

Part 3: Guide to the application of IEC 62278
for rolling stock RAM
FOREWORD
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