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BS EN 61124:2012

Superseded

Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

View Superseded by

Reliability testing. Compliance tests for constant failure rate and constant failure intensity

Available format(s)

Hardcopy , PDF

Superseded date

13-04-2023

Superseded by

BS EN IEC 61124:2023

Language(s)

English

Published date

31-07-2013

€373.95
Excluding VAT

Committee
DS/1
DevelopmentNote
Supersedes BS IEC 61124 & 04/100416 DC. (02/2008)
DocumentType
Standard
Pages
126
PublisherName
British Standards Institution
Status
Superseded
SupersededBy
Supersedes

This International Standard gives a number of optimized test plans, the corresponding operating characteristic curves and expected test times. In addition the algorithms for designing test plans using a spreadsheet program are also given, together with guidance on how to choose test plans.

This standard specifies procedures to test whether an observed value of

  • failure rate,

  • failure intensity,

  • mean time to failure (MTTF),

  • mean operating time between failures (MTBF),

conforms to a given requirement.

It is assumed, except where otherwise stated, that during the accumulated test time, the times to failure or the operating times between failures are independent and identically exponentially distributed. This assumption implies that the failure rate or failure intensity is constant.

Four types of test plans are described as follows:

  • truncated sequential tests;

  • time/failure terminated tests;

  • fixed calendar time terminated tests without replacement;

  • combined test plans.

This standard does not cover guidance on how to plan, perform, analyse and report a test. This information can be found in IEC 60300-3-5.

This standard does not describe test conditions. This information can be found in IEC 60605-2 and in IEC 60300-3-5.

Standards Relationship
UNE-EN 61124:2014 Identical
NF EN 61124 : 2012 Identical
SN EN 61124 : 2006 Identical
DIN EN 61124:2013-01 Identical
EN 61124:2012 Identical
IEC 61124:2012 Identical
NBN EN 61124 : 2012 Identical
IEC 61124:2012/COR1:2013 Identical
EN 62341-1-2:2009 Identical

IEC 61123:1991 Reliability testing - Compliance test plans for success ratio
IEC 60605-4:2001 Equipment reliability testing - Part 4: Statistical procedures for exponential distribution - Point estimates, confidence intervals, prediction intervals and tolerance intervals
IEC 60605-6:2007 Equipment reliability testing - Part 6: Tests for the validity and estimation of the constant failure rate and constant failure intensity
MIL-HDBK-781 Revision A:1996 RELIABILITY TEST METHODS, PLANS, AND ENVIRONMENTS FOR ENGINEERING DEVELOPMENT, QUALIFICATION AND PRODUCTION
IEC 60605-2:1994 Equipment reliability testing - Part 2: Design of test cycles
IEC 60300-3-5:2001 Dependability management - Part 3-5: Application guide - Reliability test conditions and statistical test principles

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