EN ISO 19014-2:2022

Earth-moving machinery - Functional safety - Part 2: Design and evaluation of hardware and architecture requirements for safety-related parts of the control system (ISO 19014-2:2022)

EN ISO 19014-2:2022

Name:EN ISO 19014-2:2022   Standard name:Earth-moving machinery - Functional safety - Part 2: Design and evaluation of hardware and architecture requirements for safety-related parts of the control system (ISO 19014-2:2022)
Standard number:EN ISO 19014-2:2022   language:English language
Release Date:28-Jun-2022   technical committee:CEN/TC 151 - Construction equipment and building material machines - Safety
Drafting committee:CEN/TC 151/WG 1 - Earth-moving machinery - Safety   ICS number:53.100 - Earth-moving machinery

SLOVENSKI STANDARD
01-september-2022
Stroji za zemeljska dela - Funkcijska varnost - 2. del: Oblikovanje in vrednotenje
strojnih in arhitekturnih zahtev za varnostne dele krmilnega sistema (ISO 19014-
2:2022)
Earth-moving machinery - Functional safety - Part 2: Design and evaluation of hardware
and architecture requirements for safety-related parts of the control system (ISO 19014-
2:2022)
Erdbaumaschinen - Funktionale Sicherheit - Teil 2: Entwurf und Bewertung von
Hardware- und Architekturanforderungen für sicherheitsrelevante Teile des
Steuerungssystems (ISO 19014-2:2022)
Engins de terrassement - Sécurité fonctionnelle - Partie 2: Conception et évaluation des
exigences de matériel et d’architecture pour les parties relatives à la sécurité du système
de commande (ISO 19014-2:2022)
Ta slovenski standard je istoveten z: EN ISO 19014-2:2022
ICS:
53.100 Stroji za zemeljska dela Earth-moving machinery
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 19014-2
EUROPEAN STANDARD
NORME EUROPÉENNE
June 2022
EUROPÄISCHE NORM
ICS 53.100
English Version
Earth-moving machinery - Functional safety - Part 2:
Design and evaluation of hardware and architecture
requirements for safety-related parts of the control system
(ISO 19014-2:2022)
Engins de terrassement - Sécurité fonctionnelle - Partie Erdbaumaschinen - Funktionale Sicherheit - Teil 2:
2: Conception et évaluation des exigences de matériel Entwurf und Bewertung von Hardware- und
et d'architecture pour les parties relatives à la sécurité Architekturanforderungen für sicherheitsrelevante
du système de commande (ISO 19014-2:2022) Teile des Steuerungssystems (ISO 19014-2:2022)
This European Standard was approved by CEN on 25 May 2022.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 19014-2:2022 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 19014-2:2022) has been prepared by Technical Committee ISO/TC 127 "Earth-
moving machinery" in collaboration with Technical Committee CEN/TC 151 “Construction equipment
and building material machines - Safety” the secretariat of which is held by DIN.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by December 2022, and conflicting national standards
shall be withdrawn at the latest by December 2022.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document has been prepared under a Standardization Request given to CEN by the European
Commission and the European Free Trade Association.
Any feedback and questions on this document should be directed to the users’ national standards
body/national committee. A complete listing of these bodies can be found on the CEN website.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the
United Kingdom.
Endorsement notice
The text of ISO 19014-2:2022 has been approved by CEN as EN ISO 19014-2:2022 without any
modification.
INTERNATIONAL ISO
STANDARD 19014-2
First edition
2022-06
Earth-moving machinery —
Functional safety —
Part 2:
Design and evaluation of hardware
and architecture requirements for
safety-related parts of the control
system
Engins de terrassement — Sécurité fonctionnelle —
Partie 2: Conception et évaluation des exigences de matériel et
d’architecture pour les parties relatives à la sécurité du système de
commande
Reference number
ISO 19014-2:2022(E)
ISO 19014-2:2022(E)
© ISO 2022
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: [email protected]
Website: www.iso.org
Published in Switzerland
ii
ISO 19014-2:2022(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Symbols and abbreviated terms.2
5 General requirements . 3
5.1 Application . 3
5.2 Existing SCS . 4
6 System design . 4
6.1 Overview . 4
6.2 General requirements . 4
6.3 Hardware design . 5
7 System safety performance evaluation . 6
7.1 Machine performance level achieved (MPL ) . 6
a
7.2 Hardware safety evaluation . 6
7.2.1 General . 6
7.2.2 Fault consideration . 6
7.2.3 Fault exclusion . 7
7.2.4 Mean time to dangerous failure (MTTF ) . 7
d
7.3 Diagnostic coverage (DC) . 7
7.3.1 DC of ESCS . . 7
7.3.2 DC of N/ESCS . 7
7.4 System-level fault reduction measures of hydraulic systems based on hydraulic
system robustness (HSR) . 8
7.4.1 General . 8
7.4.2 HSR score calculation . 8
7.5 Category classifications . 9
7.5.1 General . 9
7.5.2 Category B/Category 1 .12
7.5.3 Category 2 . 14
7.5.4 Conflicting safety functions . 15
7.5.5 Considerations for the SRP/CS of fail-operational systems . 16
7.6 Combination of SCS to achieve an overall MPL . 16
8 Information for use and maintenance .18
8.1 General . 18
8.2 Operator’s manual . 18
Annex A (informative) Example systems and evaluations .19
Annex B (informative) Examples of evaluations using HSR scoring .33
Annex C (normative) Compatibility with other functional safety standards .37
Annex D (informative) Safety function evaluation .38
Annex E (normative) Exceptions, exclusions, additions to ISO 13849-1 and ISO 13849-2 .40
Bibliography .
...

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