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BS EN 62550:2017

BS EN 62550:2017

$198.66

Spare parts provisioning

Published By Publication Date Number of Pages
BSI 2017 60
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This document 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.

PDF Catalog

PDF Pages PDF Title
6 English
CONTENTS
9 FOREWORD
11 INTRODUCTION
12 1 Scope
2 Normative references
3 Terms, definitions and abbreviated terms
3.1 Terms and definitions
15 3.2 Abbreviated terms
16 4 Overview
4.1 Participants and major steps in the spare parts provisioning process
17 Figures
Figure 1 – Participants and major steps in the spare parts provisioning process
Tables
Table 1 – Responsibilities, targets, and measurementsfor suppliers, maintainers, operator and users
18 4.2 Types of spare parts
4.3 Identification of spare parts as integral part of the level of repair analysis (LORA)
20 4.4 Overall spare parts provisioning process
Figure 2 – Identification of spare parts
21 5 Demand forecast
5.1 General
Figure 3 – Spare parts provisioning process during design and development
22 5.2 Forecast based on consumption data
5.2.1 General
5.2.2 Procedures for forecast
23 5.3 Initial determination of demand
5.3.1 General
5.3.2 Prediction of failure rates and failure intensities
24 5.3.3 Calculation of demand rates
6 Spare parts quantification
6.1 General
6.1.1 Process overview
25 Figure 4 – Spare parts provisioning process during utilization
26 6.1.2 Probability distributions for spare parts quantification
27 6.1.3 Measures of effectiveness (MoE)
28 6.1.4 ABC-analysis (Pareto analysis)
29 Figure 5 – Principle of an ABC-analysis
30 6.1.5 Quantification of repairable items
6.1.6 Quantification of non-repairable items
31 Figure 6 – Inventory control policies
32 6.2 Strategic (critical, insurance) spare parts
6.3 Inventory systems
Figure 7 – Hierarchically structured inventory system
34 6.4 Inventory optimization
Figure 8 – Single-product-single-inventory models
35 Figure 9 – Idealized inventory model for non-repairable items
36 7 Spare parts documentation
7.1 Principles and objectives
7.2 Illustrated parts catalogue (IPC)
39 7.3 Parts catalogue
8 Supply management
8.1 General
8.1.1 Activities
40 8.1.2 Economic provisioning
8.2 Sources for spare parts
Figure 10 – Supply management activities
41 8.3 Supply policies
8.3.1 Insourcing
8.3.2 Outsourcing
8.3.3 Single sourcing
42 8.3.4 Global sourcing
8.3.5 Concurrent sourcing
43 8.3.6 Obsolescence management
8.4 Planning and control of the flow of repairable spare parts
44 Annex A (informative)Prognosis of demand
A.1 General
A.2 Synthetic determining of demand
Figure A.1 – Procedures of demand forecast
45 A.3 Prognosis based on consumption data
A.3.1 Overview
A.3.2 Forecast on the basis of the moving average
46 A.3.3 Forecast on the basis of the weighted moving average
A.3.4 Forecast on the basis of exponential smoothing
47 A.3.5 Forecast on the basis of regression analysis
48 Annex B (informative)Measures of effectiveness
B.1 General
B.2 Stock-related measures of effectiveness
B.2.1 Fill rate (FR) and risk of shortage (ROS)
49 Figure B.1 – Diagram for the determination of the fill rate(FR) with a Poisson demand
50 B.2.2 Expected backorders (EBO)
Figure B.2 – Diagram for the determination of the factor K for the required fill rate
Figure B.3 – Inventory system with a backorder case
51 B.2.3 Mean waiting time (MWT)
52 B.3 System-related measures of effectiveness
B.3.1 Operational system availability (Aop)
Figure B.4 – Diagram for the determination of the mean waiting time (MWT) with a Poisson demand
53 B.3.2 Number of systems not operationally ready (NOR)
54 Annex C (informative)Example: Quantification of spare parts and optimization of inventory stocks
C.1 General
C.2 Product breakdown structure
Figure C.1 – Structure of the DCN
55 Table C.1 – First indenture level – Data communication network
Table C.2 – Second indenture level – Communication system
Table C.3 – Third indenture level – Power supply system
Table C.4 – Third indenture level – Main processor
56 C.3 Calculation of spare parts quantities and costs
Table C.5 – Third indenture level – Fan system
Table C.6 – Investments in spare repairable items
57 Figure C.2 – Inventory system for the DCN
58 Bibliography

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BS EN 62550:2017
$198.66