Life/Lifetime
Life/Lifetime : Design Life: The period of time during which a facility or component is expected to perform according to the technical specifications to which it was produced. Operating Life/Lifetime: (1) The period during which an authorized facility is used for its intended purpose, until decommissioning or closure. The synonyms operating period and operational period are also used. (2) The period during which a spent fuel or a radioactive waste management facility is used for its intended purpose. In the case of a disposal facility, the period begins when spent fuel or radioactive waste is first emplaced in the facility and ends upon closure of the facility. Qualified Life: Period for which a structure, system or component has been demonstrated, through testing, analysis or experience, to be capable of functioning within acceptance criteria during specific operating conditions while retaining the ability to perform its safety functions in a design basis accident or earthquake. Service Life: The period from initial operation to final withdrawal from service of a structure, system or component
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