Article | REF: BM5008 V1

Operating safety: methods for controlling risks

Author: Yves MORTUREUX

Publication date: January 10, 2005

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2. Fundamental concepts

The "dependability" approach and reasoning are based on a number of basic concepts that have been refined over the years (see History) and continue to be refined today. Going through this basic vocabulary is therefore a classic introduction to dependability. The reader will find other important definitions in a glossary.

2.1 Operational reliability

Ability of an entity to satisfy one or more required functions under given conditions.

Note that this concept can encompass reliability, availability, maintainability, safety, durability... or combinations of these capabilities.

In the broadest sense, SoF is considered to be the science of failures and breakdowns

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