BS 6548-6: BRITISH STANDARD 1995 IEC 706-6: 1994 Maintainability of equipment - Part 6: Guide to statistical methods in maintainability evaluation BSi BS 6548-6:1995 Committees responsible for this British Standard BSI The preparation of this British Standard was entrusted to Technical Committee QMS/23, Reliability and maintainability systems upon which the following bodies were represented: AEA Technology Association of Consulting Engineers Association of Project Managers British Gas plc British Railways Board British Telecommunications plc City University Civil Aviation Authority Consumers' Association Cranfield University Design Council Electricity Association Federation of the Electronics Industry GAMBICA (BEAMA Ltd.) Institute of Quality Assurance Institute of Risk Management Institution of Electrical Engineers Institution of Mechanical Engineers Institution of Plant Engineers London Underground Ltd. Mercury Communications Limited. Ministry of Defence National Computing Centre Ltd. Railtrack Railway Industry Association Royal Institution of Chartered Surveyors Royal Statistical Society Safety and Reliability Society Society of Environmental Engineers Society of Motor Manufacturers and Traders Limited University of Bradford University of Technology, Loughborough This British Standard, having West Midlands Enterprise Board been prepared under the direction of the Management Copy: Systems Sector Board, was published under the authority of the Standards Board and comes into effect on Amendments issued since publication Licensed 15May1995 Amd. No. Date Comments CBSI 06-1999 The following BSI references relate to the work on this standard: Committee reference QMS/23 Draft for comment 90/97506 DC ISBN 0 580 24038 X BS 6548-6:1995 Contents Page BSI Committees responsible Inside front cover National foreword ii Introduction 1 Scope 1 1 2 Normative references 1 3 Definitions 1 4 Mathematical back-up material 1 Annex A (informative) Maintainability allocation 3 Annex B (informative) Maintainability demonstration test methods 9 Annex C (informative) Kolmogorov-Smirnov distribution testing 15 ACMT50 [ACMT95 Figure A.1 7 MACMT MACMT Maintainability allocation to subitem level Figure A.2 8 Figure B.1 - Test method 7: sequential test plan 14 Table A.1 - Maintainability allocation to subitem level 6 一 Sampling plans for specified po, P1, α, β (po < 0,2) Table B.1 -s 13 Table B.2 14 - Test method 7: acceptance and rejection numbers Table C.1 Critical values of d 15 一 List of references Inside back cover CBSI 06-1999 1