• EN 61164:2004

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    Reliability growth - Statistical test and estimation methods

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    Published date:  15-04-2004

    Publisher:  European Committee for Standards - Electrical

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    Table of Contents - (Show below) - (Hide below)

    1 Scope
    2 Normative references
    3 Terms and definitions
    4 Symbols
    5 Reliability growth models in design and test
    6 Reliability growth models used for systems/products in
      design phase
      6.1 Modified power law model for planning of reliability
          growth in product design phase
          6.1.1 General
          6.1.2 Planning model for the reliability growth during the
                product design period
          6.1.3 Tracking the achieved reliability growth
      6.2 Modified Bayesian IBM-Rosner model for planning reliability
          growth in design phase
          6.2.1 General
          6.2.2 Data requirements
          6.2.3 Estimates of reliability growth and related parameters
          6.2.4 Tracking reliability growth during design phase
    7 Reliability growth planning a tracking in the product
      reliability growth testing
      7.1 Continuous reliability growth models
          7.1.1 The power law model
          7.1.2 The fixed number of faults model
      7.2 Discrete reliability growth model
          7.2.1 Model description
          7.2.2 Estimation
    8 Use of the power law model in planning reliability improvement
      test programmes
    9 Statistical test and estimation procedures for continuous power
      law model
      9.1 Overview
      9.2 Growth tests and parameter estimation
          9.2.1 Case 1 - Time data for every relevant failure
          9.2.2 Case 2 - Time data for groups of relevant failures
      9.3 Goodness-of-fit tests
          9.3.1 General
          9.3.2 Case 1 - Time data for every relevant failure
          9.3.3 Case 2 - Time data for groups of relevant failures
      9.4 Confidence intervals on the shape parameter
          9.4.1 General
          9.4.2 Case 1 - Time data for every relevant failure
          9.4.3 Case 2 - Time data for groups of relevant failures
      9.5 Confidence intervals on current MTBF
          9.5.1 General
          9.5.2 Case 1 -Time data for every relevant failure
          9.5.3 Case 2 -Time data for groups of relevant failures
      9.6 Projection technique
    Annex A (informative) Examples for planning and analytical
                          models used in design and test phase of
                          product development
      A.1 Reliability growth planning in product design phase
          A.1.1 Power law planning model example
          A.1.2 Construction of the model and monitoring of
                reliability growth
      A.2 Example of Bayesian reliability growth model for the
          product design phase
      A.3 Failure data for discrete trials
      A.4 Examples of reliability growth through testing
          A.4.1 Introduction
          A.4.2 Current reliability assessments
          A.4.3 Projected reliability estimates
    Annex B (informative) The power law reliability growth
                          model - Background information
      B.1 The Duane postulate
      B.2 The power law model
      B.3 Modified power law model for planning of reliability
          growth in product design phase
      B.4 Modified Bayesian IBM-Rosner model for planning
          reliability growth in the design phase
    Annex ZA (normative) Normative references to international
                         publications with their corresponding
                         European publications

    Abstract - (Show below) - (Hide below)

    Gives models and numerical methods for reliability growth assessments based on failure data, which were generated in a reliability improvement programme. These procedures deal with growth, estimation, confidence intervals for product reliability and goodness-of-fit tests.

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

    Committee CLC/SR 56
    Development Note To be used in conjunction with EN 61014. (09/2004)
    Document Type Standard
    Publisher European Committee for Standards - Electrical
    Status Current

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

    EN 62506 : 2013 METHODS FOR PRODUCT ACCELERATED TESTING (IEC 62506:2013)
    EN 61508-2:2010 Functional safety of electrical/electronic/programmable electronic safety-related systems - Part 2: Requirements for electrical/electronic/programmable electronic safety-related systems
    EN 60300-3-15 : 2009 DEPENDABILITY MANAGEMENT - PART 3-15: APPLICATION GUIDE - ENGINEERING OF SYSTEM DEPENDABILITY
    EN 60300-3-4:2008 Dependability management - Part 3-4: Application guide - Guide to the specification of dependability requirements
    EN 62429:2008 Reliability growth - Stress testing for early failures in unique complex systems
    BS EN 62506:2013 Methods for product accelerated testing
    UNE-EN 62059-31-1:2010 Electricity metering equipment - Dependability -- Part 31-1: Accelerated reliability testing - Elevated temperature and humidity
    CEI EN 62429 : 2008 RELIABILITY GROWTH - STRESS TESTING FOR EARLY FAILURES IN UNIQUE COMPLEX SYSTEMS
    BS EN 60300-3-15:2009 Dependability management Application guide. Engineering of system dependability
    BS EN 62429:2008 Reliability growth. Stress testing for early failures in unique complex systems
    BS EN 61508-2:2010 Functional safety of electrical/electronic/ programmable electronic safety-related systems Requirements for electrical/electronic/ programmable electronic safety-related systems
    BS EN 61508-7:2010 Functional safety of electrical/electronic/ programmable electronic safety related systems Overview of techniques and measures
    CEI EN 62506 : 2014 METHODS FOR PRODUCT ACCELERATED TESTING
    CEI EN 60300-3-4 : 2010 DEPENDABILITY MANAGEMENT - PART 3-4: APPLICATION GUIDE - GUIDE TO THE SPECIFICATION OF DEPENDABILITY REQUIREMENTS
    I.S. EN 62506:2013 METHODS FOR PRODUCT ACCELERATED TESTING (IEC 62506:2013 (EQV))
    UNE-EN 62429:2012 Reliability growth - Stress testing for early failures in unique complex systems
    UNE-EN 60300-3-4:2011 Dependability management -- Part 3-4: Application guide - Guide to the specification of dependability requirements
    BS EN 62059-31-1:2008 Electricity metering equipment. Dependability Accelerated reliability testing. Elevated temperature and humidity
    BS EN 60300-3-4:2008 Dependability management Application guide. Guide to the specification of dependability requirements
    I.S. EN 60300-3-4:2008 DEPENDABILITY MANAGEMENT - PART 3-4: APPLICATION GUIDE - GUIDE TO THE SPECIFICATION OF DEPENDABILITY REQUIREMENTS
    I.S. EN 62429:2008 RELIABILITY GROWTH - STRESS TESTING FOR EARLY FAILURES IN UNIQUE COMPLEX SYSTEMS
    EN 61508-7:2010 Functional safety of electrical/electronic/programmable electronic safety-related systems - Part 7: Overview of techniques and measures
    EN 62059-31-1 : 2008 ELECTRICITY METERING EQUIPMENT - DEPENDABILITY - PART 31-1: ACCELERATED RELIABILITY TESTING - ELEVATED TEMPERATURE AND HUMIDITY

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

    IEC 60605-4:2001 Equipment reliability testing - Part 4: Statistical procedures for exponential distribution - Point estimates, confidence intervals, prediction intervals and tolerance intervals
    IEC 61014:2003 Programmes for reliability growth
    IEC 60605-6:2007 Equipment reliability testing - Part 6: Tests for the validity and estimation of the constant failure rate and constant failure intensity
    EN 61014 : 2003 Programmes for reliability growth
    MIL-HDBK-189 Revision C:2011 RELIABILITY GROWTH MANAGEMENT
    IEC 60300-3-5:2001 Dependability management - Part 3-5: Application guide - Reliability test conditions and statistical test principles
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