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EN 62550:2017

(Main)

Spare parts provisioning

Spare parts provisioning

IEC 62550:2017 describes requirements for spare parts provisioning as a part of supportability activities that affect dependability performance so that continuity of operation of products, equipment and systems for their intended application can be sustained. This document is intended for use by a wide range of suppliers, maintenance support organizations and users and can be applied to all items.
Keywords: necessary spare parts

Ersatzteilbeschaffung

Approvisionnement en pièces de rechange

IEC 62550:2017 spécifie les exigences relatives à l’approvisionnement en pièces de rechange relevant des activités de supportabilité ayant une incidence sur les caractéristiques de sûreté de fonctionnement et permettant ainsi d’assurer la continuité du fonctionnement des produits, des matériels et des systèmes pour leur application prévue. Le présent document est destiné à être utilisé par un large éventail de fournisseurs, d’organisations de support logistique à la maintenance et d’utilisateurs et peut être appliqué à toutes les entités.
Mots clés : pièces de rechange nécessaires

Oskrba z nadomestnimi deli (IEC 62550:2017)

Ta dokument opisuje zahteve za oskrbo z rezervnimi deli kot del podpornih dejavnosti, ki vplivajo na raven zanesljivosti, da se lahko vzdržuje neprekinjeno delovanje izdelkov, opreme in sistemov za predvideno uporabo.
Ta dokument je namenjen različnim dobaviteljem, organizacijam za podporo vzdrževanja in uporabnikom ter se lahko uporablja za vse elemente.

General Information

Status
Published
Publication Date
23-Mar-2017
Withdrawal Date
23-Feb-2020
ICS
03.120.01 - Quality in general
21.020 - Characteristics and design of machines, apparatus, equipment
Technical Committee
CLC/SR 56 - Dependability
Drafting Committee
IEC/TC 56 - IEC_TC_56
Current Stage
6060 - Document made available - Publishing
Start Date
24-Mar-2017
Completion Date
24-Mar-2017
Ref Project
SIST EN 62550:2017 - Spare parts provisioning (IEC 62550:2017)

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SLOVENSKI STANDARD
01-maj-2017
Oskrba z nadomestnimi deli (IEC 62550:2017)
Spare parts provisioning (IEC 62550:2017)
Ta slovenski standard je istoveten z: EN 62550:2017
ICS:
03.120.01 Kakovost na splošno Quality in general
21.020 =QDþLOQRVWLLQQDþUWRYDQMH Characteristics and design of
VWURMHYDSDUDWRYRSUHPH machines, apparatus,
equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN 62550
NORME EUROPÉENNE
EUROPÄISCHE NORM
March 2017
ICS 03.120.01; 21.020
English Version
Spare parts provisioning
(IEC 62550:2017)
Approvisionnement en pièces de rechange Ersatzteilbeschaffung
(IEC 62550:2017) (IEC 62550:2017)
This European Standard was approved by CENELEC on 2017-02-24. CENELEC 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 CENELEC 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 CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden,
Switzerland, Turkey and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2017 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 62550:2017 E
European foreword
The text of document 56/1711/FDIS, future edition 1 of IEC 62550, prepared by
IEC/TC 56 "Dependability" was submitted to the IEC-CENELEC parallel vote and approved by
CENELEC as EN 62550:2017.
The following dates are fixed:
(dop) 2017-11-24
• latest date by which the document has to be
implemented at national level by
publication of an identical national
standard or by endorsement
• latest date by which the national (dow) 2020-02-24
standards conflicting with the
document have to be withdrawn
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such
patent rights.
Endorsement notice
The text of the International Standard IEC 62550:2017 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standards indicated:

IEC 60300-1 NOTE Harmonized as EN 60300-1.
IEC 60300-3-3:2004 NOTE Harmonized as EN 60300-3-3:2004 (not modified).
IEC 61649 NOTE Harmonized as EN 61649.
IEC 61709 NOTE Harmonized as EN 61709.
IEC 62308 NOTE Harmonized as EN 62308.
IEC 62402 NOTE Harmonized as EN 62402.
IEC 62506 NOTE Harmonized as EN 62506.
IEC 62550 ®
Edition 1.0 2017-01
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Spare parts provisioning
Approvisionnement en pièces de rechange

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 03.120.01; 21.020 ISBN 978-2-8322-3834-9

– 2 – IEC 62550:2017 © IEC 2017
CONTENTS
FOREWORD . 5
INTRODUCTION . 7
1 Scope . 8
2 Normative references . 8
3 Terms, definitions and abbreviated terms . 8
3.1 Terms and definitions . 8
3.2 Abbreviated terms . 11
4 Overview . 12
4.1 Participants and major steps in the spare parts provisioning process . 12
4.2 Types of spare parts . 14
4.3 Identification of spare parts as integral part of the level of repair analysis
(LORA) . 14
4.4 Overall spare parts provisioning process . 16
5 Demand forecast . 17
5.1 General . 17
5.2 Forecast based on consumption data . 18
5.2.1 General . 18
5.2.2 Procedures for forecast . 18
5.3 Initial determination of demand . 19
5.3.1 General . 19
5.3.2 Prediction of failure rates and failure intensities . 19
5.3.3 Calculation of demand rates . 20
6 Spare parts quantification . 20
6.1 General . 20
6.1.1 Process overview . 20
6.1.2 Probability distributions for spare parts quantification . 22
6.1.3 Measures of effectiveness (MoE) . 23
6.1.4 ABC-analysis (Pareto analysis) . 24
6.1.5 Quantification of repairable items . 26
6.1.6 Quantification of non-repairable items . 26
6.2 Strategic (critical, insurance) spare parts . 28
6.3 Inventory systems . 28
6.4 Inventory optimization . 30
7 Spare parts documentation . 32
7.1 Principles and objectives . 32
7.2 Illustrated parts catalogue (IPC) . 32
7.3 Parts catalogue . 35
8 Supply management . 35
8.1 General . 35
8.1.1 Activities . 35
8.1.2 Economic provisioning . 36
8.2 Sources for spare parts . 36
8.3 Supply policies . 37
8.3.1 Insourcing . 37
8.3.2 Outsourcing . 37
8.3.3 Single sourcing . 37

IEC 62550:2017 © IEC 2017 – 3 –
8.3.4 Global sourcing . 38
8.3.5 Concurrent sourcing . 38
8.3.6 Obsolescence management . 39
8.4 Planning and control of the flow of repairable spare parts . 39
Annex A (informative) Prognosis of demand . 40
A.1 General . 40
A.2 Synthetic determining of demand . 40
A.3 Prognosis based on consumption data . 41
A.3.1 Overview . 41
A.3.2 Forecast on the basis of the moving average . 41
A.3.3 Forecast on the basis of the weighted moving average . 42
A.3.4 Forecast on the basis of exponential smoothing . 42
A.3.5 Forecast on the basis of regression analysis . 43
Annex B (informative) Measures of effectiveness . 44
B.1 General . 44
B.2 Stock-related measures of effectiveness . 44
B.2.1 Fill rate (FR) and risk of shortage (ROS) . 44
B.2.2 Expected backorders (EBO). 46
B.2.3 Mean waiting time (MWT) . 47
B.3 System-related measures of effectiveness . 48
B.3.1 Operational system availability (A ) . 48
op
B.3.2 Number of systems not operationally ready (NOR). 49
Annex C (informative) Example: Quantification of spare parts and optimization of
inventory stocks . 50
C.1 General . 50
C.2 Product breakdown structure . 50
C.3 Calculation of spare parts quantities and costs . 52
Bibliography . 54

Figure 1 – Participants and major steps in the spare parts provisioning process . 13
Figure 2 – Identification of spare parts . 16
Figure 3 – Spare parts provisioning process during design and development . 17
Figure 4 – Spare parts provisioning process during utilization . 21
Figure 5 – Principle of an ABC-analysis . 25
Figure 6 – Inventory control policies . 27
Figure 7 – Hierarchically structured inventory system . 28
Figure 8 – Single-product-single-inventory models . 30
Figure 9 – Idealized inventory model for non-repairable items . 31
Figure 10 – Supply management activities . 36
Figure A.1 – Procedures of demand forecast .
...

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