Before revision: Some from electronics are: MIL-HDBK-217 (US Department of Defense) SR-322 (Telcordia, previously Bellcore) HRD-4 (British Telecom) and many others These "standards" produce different results, often by a factor of more than two, for the same modelled system.
After revision: Some from electronics are: MIL-HDBK-217 (US Department of Defense) SR-332 Reliability Prediction Procedure for Electronic Equipment HRD-4 (British Telecom) and many others These "standards" produce different results, often by a factor of more than two, for the same modelled system.