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IEVref: | 192-08-08 | ID: | |

Language: | en | Status: Standard | |

Term: | steady state unavailability | ||

Synonym1: | asymptotic unavailability | ||

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Symbol: | U
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Definition: | limit, if it exists, of the instantaneous unavailability when the time tends to infinity
Note 1 to entry: Under certain conditions the steady state unavailability may be expressed as the ratio of the mean down time to the sum of the mean up time and mean down time. See IEC 61703, | ||

Publication date: | 2015-02 | ||

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Note 1 to entry: Under certain conditions the steady state unavailability may be expressed as the ratio of the mean down time to the sum of the mean up time and mean down time. See IEC 61703, *Mathematical expressions for reliability, availability, maintainability and maintenance support terms*.