©
ISO 2012
Safety of machinery — Safety-related
parts of control systems —
Part 2:
Validation
Sécurité des machines — Parties des systèmes de commande relatives
à la sécurité —
Partie 2: Validation
INTERNATIONAL
STANDARD
ISO
13849-2
Second edition
2012-10-15
Reference number
ISO 13849-2:2012(E)
ISO 13849-2:2012(E)
© ISO 2012 – All rights reserved iii
Contents
Foreword ........................................................................................................................................................................................................................................iv
Introduction
..................................................................................................................................................................................................................................v
1 Scope
................................................................................................................................................................................................................................. 1
2 Normative references
...................................................................................................................................................................................... 1
..................................................................................................................................................................................... 1
4 Validation process
............................................................................................................................................................................................... 1
.......................................................................................................................................................................... 1
........................................................................................................................................................................................ 3
................................................................................................................................................................................... 4
................................................................................................................................................................................... 4
............................................................................................................................................................. 4
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5 Validation by analysis
...................................................................................................................................................................................... 6
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............................................................................................................................................................................ 7
6 Validation by testing
......................................................................................................................................................................................... 7
........................................................................................................................................................................................................... 7
.................................................................................................................................................................... 8
..................................................................................................................................................... 8
................................................................................................................................................................... 8
........................................................... 9
8 Validation of safety functions
.................................................................................................................................................................. 9
9 Validation of performance levels and categories
............................................................................................................10
........................................................................................................................................................................ 10
................................................................................................................................ 10
d
.................................................................................................................................. 12
........................................................................................................................................................................... 13
................................................................................................................................ 13
................................................................................................... 14
................................................................................................. 14
10 Validation of environmental requirements
...........................................................................................................................15
11 Validation of maintenance requirements
................................................................................................................................15
12 Validation of technical documentation and information for use
....................................................................16
Annex A Validation tools for mechanical systems
.........................................................................................17
Annex B Validation tools for pneumatic systems
...........................................................................................21
Annex C Validation tools for hydraulic systems
...............................................................................................31
Annex D Validation tools for electrical systems
...............................................................................................40
Annex E Example of validation of fault behaviour and diagnostic means
............................53
Bibliography
.............................................................................................................................................................................................................................78
ISO 13849-2:2012(E)
Foreword
Safety of machinery.
Safety of machinery — Safety-related
parts of control systems:
— Part 1: General principles for design
— Part 2: Validation
Table 1 — Structure of Annexes A to D of this part of ISO 13849
Annex Technology
List of basic safety
principles
List of well-tried
safety principles
List of well-tried
components
Fault lists and
fault exclusions
Table(s)
A A.1 A.2 A.3
B B.1 B.2 — B.3 to B.18
C C.1 C.2 — C.3 to C.12
D
electronics)
D.1 D.2 D.3 D.4 to D.21
iv
© ISO 2012 – All rights reserved
ISO 13849-2:2012(E)
Introduction
ISO 13849
© ISO 2012 – All rights reserved v
Safety of machinery — Safety-related parts of control
systems —
Part 2:
Validation
1 Scope
2 Normative references
Safety of machinery — General principles for design — Risk assessment and risk reduction
Safety of machinery — Safety-related parts of control systems — Part 1: General
principles for design
4 Validation process
4.1 Validation principles
INTERNATIONAL STANDARD ISO 13849-2:2012(E)
© ISO 2012 – All rights reserved 1
