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IEC 61703:2016

Current
Current

The latest, up-to-date edition.

Mathematical expressions for reliability, availability, maintainability and maintenance support terms
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Hardcopy , PDF , PDF 3 Users , PDF 5 Users , PDF 9 Users

Language(s)

English - French, Spanish, Castilian

Published date

08-12-2016

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

Committee
TC 56
DevelopmentNote
To be read in conjunction with IEC 60050-192. Stability Date: 2022. (08/2016)
DocumentType
Standard
Pages
209
PublisherName
International Electrotechnical Committee
Status
Current
Supersedes

CEI 56-46 : 2005 DEPENDABILITY MANAGEMENT - PART 3-5: APPLICATION GUIDE - RELIABILITY TEST CONDITIONS AND STATISTICAL TEST PRINCIPLES
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
15/30324519 DC : 0 BS EN ISO 14224 - PETROLEUM, PETROCHEMICAL AND NATURAL GAS INDUSTRIES - COLLECTION AND EXCHANGE OF RELIABILITY AND MAINTENANCE DATA FOR EQUIPMENT
CEI EN 61014 : 2006 PROGRAMMES FOR RELIABILITY GROWTH
I.S. EN 62506:2013 METHODS FOR PRODUCT ACCELERATED TESTING (IEC 62506:2013 (EQV))
BS EN 62502:2011 Analysis techniques for dependability. Event tree analysis (ETA)
BS EN 61078:2016 Reliability block diagrams
10/30175182 DC : 0 BS EN 62551 - ANALYSIS TECHNIQUES FOR DEPENDABILITY - PETRI NET MODELLING
05/30101071 DC : DRAFT FEB 2005
BS EN 61649:2008 Weibull analysis
CEI EN 60300-3-2 : 2006 DEPENDABILITY MANAGEMENT - PART 3-2: APPLICATION GUIDE - COLLECTION OF DEPENDABILITY DATA FROM THE FIELD
I.S. EN 61649:2008 WEIBULL ANALYSIS
EN 50126-1:2017 Railway Applications - The Specification and Demonstration of Reliability, Availability, Maintainability and Safety (RAMS) - Part 1: Generic RAMS Process
IEC 61710:2013 Power law model - Goodness-of-fit tests and estimation methods
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
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
OVE/ONORM EN 60027-2 : 2007 LETTER SYMBOLS TO BE USED IN ELECTRICAL TECHNOLOGY - PART 2: TELECOMMUNICATIONS AND ELECTRONICS
07/30112904 DC : 0 BS IEC 61649 - WEIBULL ANALYSIS - GOODNESS-OF-FIT TESTS AND CONFIDENCE INTERVALS FOR WEIBULL DISTRIBUTED DATA
BS EN 61709:2017 Electric components. Reliability. Reference conditions for failure rates and stress models for conversion
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
BS QC880001(1996) : 1996 FIBRE OPTIC FAN-OUTS - BLANK DETAIL SPECIFICATION - ENVIRONMENTAL CATEGORIES 1, 2, 3, 5 AND 99
I.S. EN 62551:2012 ANALYSIS TECHNIQUES FOR DEPENDABILITY - PETRI NET TECHNIQUES (IEC 62551:2012 (EQV))
PD CLC/TR 50506-2:2009 Railway applications. Communication, signalling and processing systems. Application guide for EN 50129 Safety assurance
UNE-EN 62551:2014 Analysis techniques for dependability - Petri net techniques
BS EN 60027-2:2007 Letter symbols to be used in electrical technology Telecommunications and electronics
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
UNE-EN 62059-31-1:2010 Electricity metering equipment - Dependability -- Part 31-1: Accelerated reliability testing - Elevated temperature and humidity
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
DIN EN ISO 17526:2003-10 OPTIC AND OPTICAL INSTRUMENTS - LASERS AND LASER-RELATED EQUIPMENT - LIFETIME OF LASERS
ISO 17526:2003 Optics and optical instruments Lasers and laser-related equipment Lifetime of lasers
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)
VDI 4007:2012-06 Reliability goals - Determination, check, review, certificate
VDI 4003:2007-03 Reliability management
I.S. EN 61078:2016 RELIABILITY BLOCK DIAGRAMS
BS EN 62506:2013 Methods for product accelerated testing
04/30066208 DC : DRAFT DEC 2004 ISO 14224 - PETROLEUM AND NATURAL GAS INDUSTRIES - COLLECTION AND EXCHANGE OF RELIABILITY AND MAINTENANCE DATA FOR EQUIPMENT
EN IEC 61281-1:2018 Fibre optic communication subsystems - Part 1: Generic specification
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
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
CEI EN 62502 : 2012 ANALYSIS TECHNIQUES FOR DEPENDABILITY - EVENT TREE ANALYSIS (ETA)
BS EN IEC 61281-1:2018 Fibre optic communication subsystems Generic specification
BS EN 61014:2003 Programmes for reliability growth
PD CLC/TR 50126-2:2007 Railway applications. The specification and demonstration of reliability, availability, maintainability and safety (RAMS) Guide to the application of EN 50126-1 for safety
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
I.S. EN IEC 61281-1:2018 FIBRE OPTIC COMMUNICATION SUBSYSTEMS - PART 1: GENERIC SPECIFICATION
EN 61709:2017 Electric components - Reliability - Reference conditions for failure rates and stress models for conversion
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
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 50126-1:2017 RAILWAY APPLICATIONS - THE SPECIFICATION AND DEMONSTRATION OF RELIABILITY, AVAILABILITY, MAINTAINABILITY AND SAFETY (RAMS) - PART 1: GENERIC RAMS PROCESS
15/30310506 DC : 0 BS EN 61078 - RELIABILITY BLOCK DIAGRAMS
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 Analysis techniques for dependability. Petri net techniques
CEI EN 60300-3-4 : 2010 DEPENDABILITY MANAGEMENT - PART 3-4: APPLICATION GUIDE - GUIDE TO THE SPECIFICATION OF DEPENDABILITY REQUIREMENTS
BS EN 60300-3-2:2005 Dependability management Application guide. Collection of dependability data from the field
09/30169892 DC : 0 BS EN 62502 - ANALYSIS TECHNIQUES FOR DEPENDABILITY - EVENT TREE ANALYSIS
UNE-EN 61649:2012 Weibull analysis
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
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 62502:2010 ANALYSIS TECHNIQUES FOR DEPENDABILITY - EVENT TREE ANALYSIS (ETA)
CEI EN 61710 : 2014 POWER LAW MODEL - GOODNESS-OF-FIT TESTS AND ESTIMATION METHODS
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 Optics and optical instruments. Lasers and laser-related equipment. Lifetime of lasers
IEC 62506:2013 Methods for product accelerated testing
EN 62502 : 2010 ANALYSIS TECHNIQUES FOR DEPENDABILITY - EVENT TREE ANALYSIS (ETA)
I.S. EN 61710:2013 POWER LAW MODEL - GOODNESS-OF-FIT TESTS AND ESTIMATION METHODS (IEC 61710:2013 (EQV))
UNE-EN 60300-3-4:2011 Dependability management -- Part 3-4: Application guide - Guide to the specification of dependability requirements
BS EN 61710:2013 Power law model. Goodness-of-fit tests and estimation methods
10/30238858 DC : 0 BS EN 62506 - METHODS FOR PRODUCT ACCELERATED TESTING
BS EN 62059-31-1:2008 Electricity metering equipment. Dependability Accelerated reliability testing. Elevated temperature and humidity
03/108624 DC : DRAFT JULY 2003 IEC 60300-3-2 - DEPENDABILITY MANAGEMENT - PART 3-2: APPLICATION GUIDE - COLLECTION OF DEPENDABILITY DATA FROM THE FIELD
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 60300-3-4:2008 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
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
API 689 : 2007 COLLECTION AND EXCHANGE OF RELIABILITY AND MAINTENANCE DATA FOR EQUIPMENT
I.S. EN 62059-31-1:2008 ELECTRICITY METERING EQUIPMENT - DEPENDABILITY - PART 31-1: ACCELERATED RELIABILITY TESTING - ELEVATED TEMPERATURE AND HUMIDITY
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
IEC 62551:2012 Analysis techniques for dependability - Petri net techniques
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
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

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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