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Simulation based analysis and an applicaiton to an offshore oil and gas production system of the Natvig measures of component importance in repairable systems

Natvig, Bent; Eide, Kristina A.; Gåsemyr, Jørund; Huseby, Arne Bang; Isaksen, Stefan L.
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stat-res-10-08.pdf (352.2Kb)
Year
2008
Permanent link
http://urn.nb.no/URN:NBN:no-28493

Is part of
Preprint series. Statistical Research Report
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  • Matematisk institutt [2062]
Abstract
In the present paper the Natvig measures of component importance for repairable systems, and its extended version are analysed for two three component systems and a bridge system. The measures are also applied to an offshore oil and gas production system. According to the extended version of the Natvig measure a component is important if both by failing it strongly reduces the expected system uptime and by being repaired it strongly reduces the expected system downtime. The results include a study of how different distributions affect the ranking of the components. All numerical results are computed using discrete event simulation. In a companion paper (Huseby, Eide, Isaksen, Natvig and Gåsemyr 2008) the advanced simulation methods needed in these calculations are described.
 
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