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IEC 60605-4

Equipment Reliability Testing - Part 4: Statistical Procedures for Exponential Distribution - Point Estimates, Confidence Intervals, Prediction Intervals and Tolerance Intervals

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Organization: IEC
Publication Date: 1 August 2001
Status: active
Page Count: 74
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 provides statistical methods for evaluating point estimates, confidence intervals, prediction intervals and tolerance intervals for the failure rate of items, whose time to failure follows an exponential distribution. This implies that the failure rate is constant with respect to time. It should be noted that although reference is made above to failure rate, the numerical methods to be described are equally applicable to other event rates provided the times to the occurrence of the event follow an exponential distribution. Thus, with this qualification, the numerical methods will apply, for example, to constant failure intensities and constant repair rates. For convenience, however, and to avoid unnecessary repetition, reference will be made in what follows only to failures and failure rates.

Use of the procedures in this standard should be supported by tests to confirm the validity of the assumption of constant failure rate or failure intensity

This standard is also applicable whenever a random sample of items is subjected to a test of times to failure for the purpose of estimating measures of reliability performance.

Document History

IEC 60605-4
August 1, 2001
Equipment Reliability Testing - Part 4: Statistical Procedures for Exponential Distribution - Point Estimates, Confidence Intervals, Prediction Intervals and Tolerance Intervals
This International Standard provides statistical methods for evaluating point estimates, confidence intervals, prediction intervals and tolerance intervals for the failure rate of items, whose time...
January 1, 1986
Equipment Reliability Testing Part 4: Procedures for Determining Point Estimates and Confidence Limits for Equipment Reliability Determination Test; (Amendment 1-1989)
A description is not available for this item.

References

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