High Quality Content by WIKIPEDIA articles! The safety life cycle is the series of phases from initiation and specifications of safety requirements, covering design and development of safety features in a safety-critical system, and ending in decommissioning of that system. The basic concept in building software safety, ie safety features in software, is that safety characteristics and behaviour of the software and system must be specified and designed into the system. The problem for any systems designer lies in reducing the risk to an acceptable level and of course, the risk tolerated will vary between applications. When a software application is to be used in a safety-related system, then this must be borne in mind at all stages in the software lifecycle.

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