BS EN IEC 61124:2023 PDF

Scope: 1 Scope This document gives a number of optimized test plans, the corresponding border lines and characteristics. 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 document specifies procedures to test whether an observed value of - failure rate, - failure intensity, - mean operating 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 assumed to be constant. Four types of test plans are described as follows: - truncated sequential probability ratio test ( SPRT ); - fixed time/failure terminated test ( FTFT ); ...

BS EN IEC 61124:2023 Referenced Document

IEC 60300-3-5:2001 Dependability management - Part 3-5: Application guide; Reliability test conditions and statistical test principles
IEC 60605-2 Equipment reliability testing - Part 2: Design of test cycles
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 Equipment reliability testing - Part 6: Tests for the validity and estimation of the constant failure rate and constant failure intensity
IEC 61123:2019 Reliability testing - Compliance test plans for success ratio

2023 BS EN IEC 61124:2023 Reliability testing. Compliance tests for constant failure rate and constant failure intensity