1、Spare parts provisioningBS EN 62550:2017BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06National forewordThis British Standard is the UK implementation of EN 62550:2017. It is identical to IEC 62550:2017.The UK participation in its preparation was entrusted to Techni
2、calCommittee DS/1, Dependability.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisions ofa contract. Users are responsible for its correct application. The British Standards Instituti
3、on 2017.Published by BSI Standards Limited 2017ISBN 978 0 580 86353 0ICS 03.120.01; 21.020Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 March 2017.Amendments/
4、corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN 62550:2017EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 62550 March 2017 ICS 03.120.01; 21.020 English Version Spare parts provisioning (IEC 62550:2017) Approvisionnement en pices de rechange (IEC 62550:2017) Ersatztei
5、lbeschaffung (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-d
6、ate 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 transl
7、ation 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, De
8、nmark, 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.
9、European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr 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 worl
10、dwide for CENELEC Members. Ref. No. EN 62550:2017 E EN 62550:2017 2 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 a
11、re fixed: latest date by which the document has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2017-11-24 latest date by which the national standards conflicting with the document have to be withdrawn (dow) 2020-02-24 Attention is drawn t
12、o 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 Euro
13、pean 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 6164
14、9. 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 pices de rechange INT
15、ERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE ICS 03.120.01; 21.020 ISBN 978-2-8322-3834-9 Registered trademark of the International Electrotechnical Commission Marque dpose de la Commission Electrotechnique Internationale Warning! Make sure that you obtained this
16、 publication from an authorized distributor. Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agr. BS EN 62550:2017 2 IEC 62550:2017 IEC 2017 CONTENTS FOREWORD . 5 INTRODUCTION . 7 1 Scope 8 2 Normative references 8 3 Terms, definitions and abbreviated term
17、s 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
18、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 Calculati
19、on 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 Quan
20、tification 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
21、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 BS EN 62550:2017IEC 62550:2017 IEC 2017 3 8.3.4 Global sourcing . 38 8.3.5 Concurrent sourcing 38 8.3.6
22、 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 m
23、oving 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 effec
24、tiveness . 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 (Aop) . 48 B.3.2 Number of systems not operationally ready (NOR). 49 Annex C (in
25、formative) 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 Fi
26、gure 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 in
27、ventory 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 40 Figure B.1 Diagram for the determination of the fill rate (FR) with a Poisson
28、demand 45 Figure B.2 Diagram for the determination of the factor K for the required fill rate . 46 Figure B.3 Inventory system with a backorder case 46 Figure B.4 Diagram for the determination of the mean waiting time (MWT) with a Poisson demand . 48 Figure C.1 Structure of the DCN 50 BS EN 62550:20
29、17 4 IEC 62550:2017 IEC 2017 Figure C.2 Inventory system for the DCN . 53 Table 1 Responsibilities, targets, and measurements for suppliers, maintainers, operator and users 13 Table C.1 First indenture level Data communication network . 51 Table C.2 Second indenture level Communication system . 51 T
30、able C.3 Third indenture level Power supply system . 51 Table C.4 Third indenture level Main processor 51 Table C.5 Third indenture level Fan system 52 Table C.6 Investments in spare repairable items 52 BS EN 62550:2017IEC 62550:2017 IEC 2017 5 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ SPARE PARTS
31、 PROVISIONING FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international co-operation on all questions concerning standard
32、ization in the electrical and electronic fields. To this end and in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their preparation
33、is entrusted to technical committees; any IEC National Committee interested in the subject dealt with may participate in this preparatory work. International, governmental and non-governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely with the
34、 International Organization for Standardization (ISO) in accordance with conditions determined by agreement between the two organizations. 2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international consensus of opinion on the relevant subjects
35、since each technical committee has representation from all interested IEC National Committees. 3) IEC Publications have the form of recommendations for international use and are accepted by IEC National Committees in that sense. While all reasonable efforts are made to ensure that the technical cont
36、ent of IEC Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any misinterpretation by any end user. 4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications transparently to the maximum extent possib
37、le in their national and regional publications. Any divergence between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter. 5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformit
38、y assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any services carried out by independent certification bodies. 6) All users should ensure that they have the latest edition of this publication. 7) No liability shall attach to IEC or its directors
39、, employees, servants or agents including individual experts and members of its technical committees and IEC National Committees for any personal injury, property damage or other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and expenses arising out
40、 of the publication, use of, or reliance upon, this IEC Publication or any other IEC Publications. 8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is indispensable for the correct application of this publication. 9) Attention is drawn t
41、o the possibility that some of the elements of this IEC Publication may be the subject of patent rights. IEC shall not be held responsible for identifying any or all such patent rights. International Standard IEC 62550 has been prepared by IEC technical committee 56: Dependability. The text of this
42、standard is based on the following documents: FDIS Report on voting 56/1711/FDIS 56/1719/RVD Full information on the voting for the approval of this standard can be found in the report on voting indicated in the above table. This publication has been drafted in accordance with the ISO/IEC Directives
43、, Part 2. BS EN 62550:2017 6 IEC 62550:2017 IEC 2017 The committee has decided that the contents of this publication will remain unchanged until the stability date indicated on the IEC website under “http:/webstore.iec.ch“ in the data related to the specific publication. At this date, the publicatio
44、n will be reconfirmed, withdrawn, replaced by a revised edition, or amended. BS EN 62550:2017IEC 62550:2017 IEC 2017 7 INTRODUCTION Spare parts provisioning is the process for planning necessary spare parts under consideration of a customers needs and requirements. Proper planning and control of spa
45、re parts is a critical component of effective supportability. If the right parts are not available when needed for routine maintenance or repairs, downtime is prolonged. If too many spare parts are available, the enterprise absorbs excessive costs and the overhead of carrying inventory. Spare part p
46、lanning and supply to achieve business objectives are based on four goals: the right spare part; in the right quantity; at the right time; at the right place. Spare parts provisioning is a prerequisite for all types of maintenance tasks, such as replacements and repairs. Spare parts for corrective m
47、aintenance tasks should be supplied at random intervals for steady state availability. It may take three to four repairs before steady state availability is reached. In this period repairs may be clustered, and the need can vary significantly over time. For preventive and on-condition maintenance, f
48、ixed intervals or approximately fixed intervals for replacement items may occur. Coordination of demand for spare parts with supply of spare parts at the required time is an important factor. Unavailable materials are one of the most cited reasons for delays in the completion of maintenance tasks. T
49、he availability of spare parts is one of the factors that impacts system downtime. Methodologies such as integrated logistic support (ILS) and its subsidiary logistic support analysis (LSA) provide necessary information for spare parts provisioning. This information includes system breakdown, maintenance concept, and supply concept. Spare part optimization will cover issues typically giving answers to questions such as: which spare par
