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IEC 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.

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

General Information

Status
Published
Publication Date
19-Jan-2017
ICS
01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
03.120.01 - Quality in general
21.020 - Characteristics and design of machines, apparatus, equipment
Technical Committee
TC 56 - Dependability
Current Stage
PPUB - Publication issued
Start Date
04-Feb-2017
Completion Date
20-Jan-2017
Ref Project

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IEC 62550:2017 - Spare parts provisioning
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IEC 62550 ®
Edition 1.0 2017-01
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Spare parts provisioning
Approvisionnement en pièces de rechange

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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

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
...

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