In addition to the definition of failure as given in MIL-STD-721, and any definition given in the applicable reliability test specification or standard, the following criteria for the determination of a failure shall apply: Whenever any of the performance characteristics are outside of the requirements of the specification at any specified environmental conditions, at least one failure has occurred.
3.2 Failure Classification.
All failures occurring during reliability tests, including failures occurring during equipment burn-in under the environmental conditions specified for the reliability test, shall be classified and reported as either relevant or nonrelevant. Only those failures classified relevant shall be used in computing equipment HTBF, or for making an accept/reject decision.
Replaced/Superseded by document(s)
|MIL STD- Failure Classification for Reliability Testing.pdf
1.1 Principal statement.
This standard establishes criteria for classification of failures occurring during reliability tests.
This standard, when made a part of the procurement document or the equipment specification, applies to any reliability test, including, but not limited to, tests performed in accordance with MIL-R-22973, MIL-R-23094, and MIL-STD-781.