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  • IEC 61703:2016

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    Mathematical expressions for reliability, availability, maintainability and maintenance support terms

    Available format(s):  Hardcopy, PDF 1 User, PDF 3 Users, PDF 5 Users, PDF 9 Users

    Language(s):  English - French, Spanish, Castilian

    Published date:  12-08-2016

    Publisher:  International Electrotechnical Committee

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    Abstract - (Show below) - (Hide below)

    IEC 61703:2016 provides mathematical expressions for selected reliability, availability, maintainability and maintenance support measures defined in IEC 60050­192:2015. In addition, it introduces some terms not covered in IEC 60050-192:2015. They are related to aspects of the system of item classes (see hereafter). According to IEC 60050-192:2015, dependability [192-01-22] is the ability of an item to perform as and when required and an item [192-01-01] can be an individual part, component, device, functional unit, equipment, subsystem, or system. To account for mathematical constraints, this standard splits the items between the individual items considered as a whole (e.g. individual components) and the systems made of several individual items. It provides general considerations for the mathematical expressions for systems as well as individual items but the individual items which are easier to model are analysed in more detail with regards to their repair aspects. This standard is mainly applicable to hardware dependability, but many terms and their definitions may be applied to items containing software. This second edition cancels and replaces the first edition published in 2001. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
    - standard made as self containing as possible;
    - item split between individual items and systems;
    - generalization of the dependability concepts for systems made of several components [introduction of the conditional failure intensity (Vesely failure rate);
    - introduction of the state-transition and the Markovian models;
    - generalization of the availability to production availability];
    - introduction of curves to illustrate the various concepts. Keywords: mathematical expressions for dependability

    General Product Information - (Show below) - (Hide below)

    Committee TC 56
    Development Note To be read in conjunction with IEC 60050-192. Stability Date: 2022. (08/2016)
    Document Type Standard
    Publisher International Electrotechnical Committee
    Status Current
    Supersedes

    Standards Referenced By This Book - (Show below) - (Hide below)

    I.S. EN 50126-1:2017 RAILWAY APPLICATIONS - THE SPECIFICATION AND DEMONSTRATION OF RELIABILITY, AVAILABILITY, MAINTAINABILITY AND SAFETY (RAMS) - PART 1: GENERIC RAMS PROCESS
    07/30112904 DC : 0 BS IEC 61649 - WEIBULL ANALYSIS - GOODNESS-OF-FIT TESTS AND CONFIDENCE INTERVALS FOR WEIBULL DISTRIBUTED DATA
    I.S. EN 61078:2016 RELIABILITY BLOCK DIAGRAMS
    BS EN 61709:2017 (published 2017-08) Electric components. Reliability. Reference conditions for failure rates and stress models for conversion
    CEI 56-46 : 2005 DEPENDABILITY MANAGEMENT - PART 3-5: APPLICATION GUIDE - RELIABILITY TEST CONDITIONS AND STATISTICAL TEST PRINCIPLES
    BS EN 62506:2013 Methods for product accelerated testing
    15/30310506 DC : 0 BS EN 61078 - RELIABILITY BLOCK DIAGRAMS
    VDI 4007:2012-06 RELIABILITY GOALS - DETERMINATION, CHECK, REVIEW, CERTIFICATE
    15/30300738 DC : DRAFT MAY 2015 BS EN 60027-2 ED 4.0 - LETTER SYMBOLS TO BE USED IN ELECTRICAL TECHNOLOGY - PART 2: TELECOMMUNICATIONS AND ELECTRONICS
    UNE-EN 60300-3-4:2011 Dependability management -- Part 3-4: Application guide - Guide to the specification of dependability requirements
    04/30066208 DC : DRAFT DEC 2004 ISO 14224 - PETROLEUM AND NATURAL GAS INDUSTRIES - COLLECTION AND EXCHANGE OF RELIABILITY AND MAINTENANCE DATA FOR EQUIPMENT
    PREN 50126-1 : DRAFT 2015 RAILWAY APPLICATIONS - THE SPECIFICATION AND DEMONSTRATION OF RELIABILITY, AVAILABILITY, MAINTAINABILITY AND SAFETY (RAMS) - PART 1: GENERIC RAMS PROCESS
    BS EN 62551:2012 (published 2012-11) Analysis techniques for dependability. Petri net techniques
    EN IEC 61281-1 : 2018 FIBRE OPTIC COMMUNICATION SUBSYSTEMS - PART 1: GENERIC SPECIFICATION (IEC 61281-1:2017)
    15/30324519 DC : 0 BS EN ISO 14224 - PETROLEUM, PETROCHEMICAL AND NATURAL GAS INDUSTRIES - COLLECTION AND EXCHANGE OF RELIABILITY AND MAINTENANCE DATA FOR EQUIPMENT
    BS EN 61710 : 2013 POWER LAW MODEL - GOODNESS-OF-FIT TESTS AND ESTIMATION METHODS
    12/30187831 DC : 0 BS EN 50126-1 - RAILWAY APPLICATIONS - THE SPECIFICATION AND DEMONSTRATION OF RELIABILITY, AVAILABILITY, MAINTAINABILITY AND SAFETY (RAMS) - PART 1: GENERIC RAMS PROCESS
    BS QC880001(1996) : 1996 FIBRE OPTIC FAN-OUTS - BLANK DETAIL SPECIFICATION - ENVIRONMENTAL CATEGORIES 1, 2, 3, 5 AND 99
    10/30238858 DC : 0 BS EN 62506 - METHODS FOR PRODUCT ACCELERATED TESTING
    BS EN 62059-31-1:2008 (published 2009-03) Electricity metering equipment. Dependability Accelerated reliability testing. Elevated temperature and humidity
    VDI 4003:2007-03 RELIABILITY MANAGEMENT
    NF EN 62059-31-1 : 2009 ELECTRICITY METERING EQUIPMENT - DEPENDABILITY - PART 31-1: ACCELERATED RELIABILITY TESTING - ELEVATED TEMPERATURE AND HUMIDITY
    CEI EN 62059-31-1 : 2009 ELECTRICITY METERING EQUIPMENT - DEPENDABILITY - PART 31-1: ACCELERATED RELIABILITY TESTING - ELEVATED TEMPERATURE AND HUMIDITY
    I.S. EN 62551:2012 ANALYSIS TECHNIQUES FOR DEPENDABILITY - PETRI NET TECHNIQUES (IEC 62551:2012 (EQV))
    BS PD CLC/TR 50506-2 : 2009 RAILWAY APPLICATIONS - COMMUNICATION, SIGNALLING AND PROCESSING SYSTEMS - APPLICATION GUIDE FOR EN 50129 - PART 2: SAFETY ASSURANCE
    CEI EN 62502 : 2012 ANALYSIS TECHNIQUES FOR DEPENDABILITY - EVENT TREE ANALYSIS (ETA)
    BS EN IEC 61281-1 : 2018 FIBRE OPTIC COMMUNICATION SUBSYSTEMS - PART 1: GENERIC SPECIFICATION
    BS EN 61014 : 2003 PROGRAMMES FOR RELIABILITY GROWTH
    UNE-EN 62551:2014 Analysis techniques for dependability - Petri net techniques
    CEI EN 61014 : 2006 PROGRAMMES FOR RELIABILITY GROWTH
    I.S. EN 62506:2013 METHODS FOR PRODUCT ACCELERATED TESTING (IEC 62506:2013 (EQV))
    CEI EN 60300-3-4 : 2010 DEPENDABILITY MANAGEMENT - PART 3-4: APPLICATION GUIDE - GUIDE TO THE SPECIFICATION OF DEPENDABILITY REQUIREMENTS
    BS EN 60027-2 : 2007 LETTER SYMBOLS TO BE USED IN ELECTRICAL TECHNOLOGY - PART 2: TELECOMMUNICATIONS AND ELECTRONICS
    BS EN 62502:2011 (published 2011-06) Analysis techniques for dependability. Event tree analysis (ETA)
    BS EN 61078:2016 RELIABILITY BLOCK DIAGRAMS
    03/108624 DC : DRAFT JULY 2003 IEC 60300-3-2 - DEPENDABILITY MANAGEMENT - PART 3-2: APPLICATION GUIDE - COLLECTION OF DEPENDABILITY DATA FROM THE FIELD
    10/30175182 DC : 0 BS EN 62551 - ANALYSIS TECHNIQUES FOR DEPENDABILITY - PETRI NET MODELLING
    15/30330403 DC : 0 BS EN 50126-1 - RAILWAY APPLICATIONS - THE SPECIFICATION AND DEMONSTRATION OF RELIABILITY, AVAILABILITY, MAINTAINABILITY AND SAFETY (RAMS) - PART 1: GENERIC RAMS PROCESS
    BS EN 60300-3-2 : 2005 DEPENDABILITY MANAGEMENT - PART 3-2: APPLICATION GUIDE - COLLECTION OF DEPENDABILITY DATA FROM THE FIELD
    BS PD CLC/TR 50126-2 : 2007 RAILWAY APPLICATIONS - THE SPECIFICATION AND DEMONSTRATION OF RELIABILITY, AVAILABILITY, MAINTAINABILITY AND SAFETY (RAMS) - PART 2: GUIDE TO THE APPLICATION OF EN 50126-1 FOR SAFETY
    11/30249079 DC : 0 BS EN 61710 - POWER LAW MODEL - GOODNESS-OF-FIT TESTS AND ESTIMATION METHODS
    15/30310531 DC : 0 BS EN 61709 ED 3.0 - ELECTRIC COMPONENTS - RELIABILITY - REFERENCE CONDITIONS FOR FAILURE RATES AND STRESS MODELS FOR CONVERSION
    05/30101071 DC : DRAFT FEB 2005
    BS EN 61649 : 2008 WEIBULL ANALYSIS
    BS EN 60300-3-4:2008 Dependability management Application guide. Guide to the specification of dependability requirements
    02/401005 DC : DRAFT DEC 2002 IEC 60300-3-3 ED.2 - DEPENDABILITY MANAGEMENT - PART 3-3: LIFE CYCLE COSTING ANALYSIS - APPLICATION GUIDE
    09/30169892 DC : 0 BS EN 62502 - ANALYSIS TECHNIQUES FOR DEPENDABILITY - EVENT TREE ANALYSIS
    CEI EN 60300-3-2 : 2006 DEPENDABILITY MANAGEMENT - PART 3-2: APPLICATION GUIDE - COLLECTION OF DEPENDABILITY DATA FROM THE FIELD
    UNE-EN 61649:2012 Weibull analysis
    UNE-EN 61710:2014 Power law model - Goodness-of-fit tests and estimation methods
    IEC 61281-1:2017 Fibre optic communication subsystems - Part 1: Generic specification
    NF EN 60300 3-4 : 2008 DEPENDABILITY MANAGEMENT - PART 3-4: APPLICATION GUIDE - GUIDE TO THE SPECIFICATION OF DEPENDABILITY REQUIREMENTS
    NF EN 60027-2 : 2007 LETTER SYMBOLS TO BE USED IN ELECTRICAL TECHNOLOGY - PART 2: TELECOMMUNICATIONS AND ELECTRONICS
    IEC 61709:2017 RLV Electric components - Reliability - Reference conditions for failure rates and stress models for conversion
    IEC TR 63039:2016 Probabilistic risk analysis of technological systems - Estimation of final event rate at a given initial state
    API 689 : 2007 COLLECTION AND EXCHANGE OF RELIABILITY AND MAINTENANCE DATA FOR EQUIPMENT
    UNE-EN 62059-31-1:2010 Electricity metering equipment - Dependability -- Part 31-1: Accelerated reliability testing - Elevated temperature and humidity
    I.S. EN 61649:2008 WEIBULL ANALYSIS
    I.S. EN 62059-31-1:2008 ELECTRICITY METERING EQUIPMENT - DEPENDABILITY - PART 31-1: ACCELERATED RELIABILITY TESTING - ELEVATED TEMPERATURE AND HUMIDITY
    I.S. EN 61014:2003 PROGRAMMES FOR RELIABILITY GROWTH
    I.S. EN 61709:2017 ELECTRIC COMPONENTS - RELIABILITY - REFERENCE CONDITIONS FOR FAILURE RATES AND STRESS MODELS FOR CONVERSION
    EN 61078 : 1991 RELIABILITY BLOCK DIAGRAMS (IEC 61078:2016)
    S.R. CLC/TR 50506-2:2009 RAILWAY APPLICATIONS - COMMUNICATION, SIGNALLING AND PROCESSING SYSTEMS - APPLICATION GUIDE FOR EN 50129 - PART 2: SAFETY ASSURANCE
    I.S. EN IEC 61281-1:2018 FIBRE OPTIC COMMUNICATION SUBSYSTEMS - PART 1: GENERIC SPECIFICATION
    I.S. EN 60027-2:2007 LETTER SYMBOLS TO BE USED IN ELECTRICAL TECHNOLOGY - PART 2: TELECOMMUNICATIONS AND ELECTRONICS
    I.S. EN 60300-3-2:2005 DEPENDABILITY MANAGEMENT - PART 3-2: APPLICATION GUIDE - COLLECTION OF DEPENDABILITY DATA FROM THE FIELD
    EN 50126-1:2017 Railway Applications - The Specification and Demonstration of Reliability, Availability, Maintainability and Safety (RAMS) - Part 1: Generic RAMS Process
    CEI EN 61649 : 2010 WEIBULL ANALYSIS
    I.S. EN 60300-3-4:2008 DEPENDABILITY MANAGEMENT - PART 3-4: APPLICATION GUIDE - GUIDE TO THE SPECIFICATION OF DEPENDABILITY REQUIREMENTS
    CEI EN 61710 : 2014 POWER LAW MODEL - GOODNESS-OF-FIT TESTS AND ESTIMATION METHODS
    I.S. EN 61710:2013 POWER LAW MODEL - GOODNESS-OF-FIT TESTS AND ESTIMATION METHODS (IEC 61710:2013 (EQV))
    BS PD IEC TR 63039 : 2016 PROBABILISTIC RISK ANALYSIS OF TECHNOLOGICAL SYSTEMS - ESTIMATION OF FINAL EVENT RATE AT A GIVEN INITIAL STATE
    11/30170712 DC : 0 BS EN 60050-191 ED 2.0 - INTERNATIONAL ELECTROTECHNICAL VOCABULARY - PART 191: DEPENDABILITY
    I.S. EN 62502:2010 ANALYSIS TECHNIQUES FOR DEPENDABILITY - EVENT TREE ANALYSIS (ETA)
    EN 61709:2017 ELECTRIC COMPONENTS - RELIABILITY - REFERENCE CONDITIONS FOR FAILURE RATES AND STRESS MODELS FOR CONVERSION (IEC 61709:2017)
    IEC 61709 : 3.0 ELECTRIC COMPONENTS - RELIABILITY - REFERENCE CONDITIONS FOR FAILURE RATES AND STRESS MODELS FOR CONVERSION
    S.R. CLC/TR 50126-2:2007 RAILWAY APPLICATIONS - THE SPECIFICATION AND DEMONSTRATION OF RELIABILITY, AVAILABILITY, MAINTAINABILITY AND SAFETY (RAMS) - PART 2: GUIDE TO THE APPLICATION OF EN 50126-1 FOR SAFETY
    IEC 61078:2016 Reliability block diagrams
    DIN EN ISO 17526:2003-10 OPTIC AND OPTICAL INSTRUMENTS - LASERS AND LASER-RELATED EQUIPMENT - LIFETIME OF LASERS
    IEC 62551:2012 Analysis techniques for dependability - Petri net techniques
    ISO 17526:2003 Optics and optical instruments Lasers and laser-related equipment Lifetime of lasers
    IEC 61710:2013 Power law model - Goodness-of-fit tests and estimation methods
    BS EN ISO 14224:2016 Petroleum, petrochemical and natural gas industries. Collection and exchange of reliability and maintenance data for equipment
    IEC 60300-3-4:2007 Dependability management - Part 3-4: Application guide - Guide to the specification of dependability requirements
    IEC 60300-3-2:2004 Dependability management - Part 3-2: Application guide - Collection of dependability data from the field
    IEC 62502:2010 Analysis techniques for dependability - Event tree analysis (ETA)
    IEC 61014:2003 Programmes for reliability growth
    IEC 61649:2008 Weibull analysis
    BS EN ISO 17526:2003 (published 2003-08) Optics and optical instruments. Lasers and laser-related equipment. Lifetime of lasers
    IEC 62506:2013 Methods for product accelerated testing
    IEC 60027-2:2005 Letter symbols to be used in electrical technology - Part 2: Telecommunications and electronics
    ISO 14224:2016 Petroleum, petrochemical and natural gas industries Collection and exchange of reliability and maintenance data for equipment
    I.S. EN ISO 14224:2016 PETROLEUM, PETROCHEMICAL AND NATURAL GAS INDUSTRIES - COLLECTION AND EXCHANGE OF RELIABILITY AND MAINTENANCE DATA FOR EQUIPMENT (ISO 14224:2016)
    CLC/TR 50126-2 : 2007 RAILWAY APPLICATIONS - THE SPECIFICATION AND DEMONSTRATION OF RELIABILITY, AVAILABILITY, MAINTAINABILITY AND SAFETY (RAMS) - PART 2: GUIDE TO THE APPLICATION OF EN 50126-1 FOR SAFETY
    EN 62506 : 2013 METHODS FOR PRODUCT ACCELERATED TESTING (IEC 62506:2013)
    EN 60300-3-2 : 2005 Dependability management - Part 3-2: Application guide - Collection of dependability data from the field
    EN 60300-3-4 : 2008 DEPENDABILITY MANAGEMENT - PART 3-4: APPLICATION GUIDE - GUIDE TO THE SPECIFICATION OF DEPENDABILITY REQUIREMENTS
    EN 61710 : 2013 POWER LAW MODEL - GOODNESS-OF-FIT TESTS AND ESTIMATION METHODS (IEC 61710:2013)
    EN 60027-2 : 2007 LETTER SYMBOLS TO BE USED IN ELECTRICAL TECHNOLOGY - PART 2: TELECOMMUNICATIONS AND ELECTRONICS
    CLC/TR 50506-2 : 2009 RAILWAY APPLICATIONS - COMMUNICATION, SIGNALLING AND PROCESSING SYSTEMS - APPLICATION GUIDE FOR EN 50129 - PART 2: SAFETY ASSURANCE
    EN 61649 : 2008 WEIBULL ANALYSIS
    EN 62551 : 2012 ANALYSIS TECHNIQUES FOR DEPENDABILITY - PETRI NET TECHNIQUES (IEC 62551:2012)
    EN 62059-31-1 : 2008 ELECTRICITY METERING EQUIPMENT - DEPENDABILITY - PART 31-1: ACCELERATED RELIABILITY TESTING - ELEVATED TEMPERATURE AND HUMIDITY
    IEC 61709:2017 Electric components - Reliability - Reference conditions for failure rates and stress models for conversion
    EN 61014 : 2003 Programmes for reliability growth
    EN 62502 : 2010 ANALYSIS TECHNIQUES FOR DEPENDABILITY - EVENT TREE ANALYSIS (ETA)

    Standards Referencing This Book - (Show below) - (Hide below)

    IEC 61025:2006 Fault tree analysis (FTA)
    IEC 61078:2016 Reliability block diagrams
    AS/NZS IEC 61710:2020 Power law model - Goodness-of-fit tests and estimation methods
    IEC 61165:2006 Application of Markov techniques
    AS/NZS IEC 61649:2020 Weibull analysis
    ISO 3534-1:2006 Statistics — Vocabulary and symbols — Part 1: General statistical terms and terms used in probability
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