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CEI EN 61124

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

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Organization: CEI
Publication Date: 1 November 2013
Status: active
Page Count: 130
ICS Code (Characteristics and design of machines, apparatus, equipment): 21.020
ICS Code (Test conditions and procedures in general): 19.020
ICS Code (Application of statistical methods): 03.120.30
scope:

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.

Document History

CEI EN 61124
November 1, 2013
Reliability testing - Compliance tests for constant failure rate and constant failure intensity
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...
October 1, 2006
Reliability testing - Compliance tests for constant failure rate and constant failure intensity
La presente Norma descrive una serie di piani di prova ottimizzati, le curve caratteristiche relative ed i tempi di prova attesi. Essa descrive inoltre le procedure necessarie per stabilire se i...

References

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