Tid: 10 juni 2008 kl 10.15-11.00 . OBS! Dag och tid.

Plats : Seminarierummet 3733, Institutionen för matematik, KTH, Lindstedts väg 25, plan 7. Karta!

Föredragshållare: Magnus Carlsen

Titel: Condition Monitoring on Sub-Ice Systems

Sammanfattning: Enormous oil and gas resources are located in seas that for large parts of the year are covered with ice. Subsea structures can be a way of dealing with ice related problems, such as damage to the structure, but instead maintenance access could be a problem.

Condition monitoring can be used to discover developing failures and it can possibly also be used to prognosticate remaining machine life. Currently there is almost no condition monitoring on subsea installations. Several ways to study machine condition exist, especially on rotating machinery.

To study if, how and why condition monitoring facilitates extraction of oil and gas in sub-ice environments, a reliability, availability and maintainability analysis is performed. The analysis shows that condition monitoring considerably improves availability and costs for sub-ice installations. The largest positive effects are shown on components with heavy rotating parts and on Xmas trees (structures close to the well containing lots of valves).

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