Common Cause Failure Analysis of a Subsea System
A risk analysis study was carried out to analyse the conceptual design of a subsea system for the Albacora’s field. Albacora is an oil field located on the continental shelf off the coast of Brazil. The project is being conducted by Petroleo Brasileiro SA- PETROBRAS, owners of the field. Because subsea systems consists of several identical components and the environmental conditions are quite hostile, a risk analysis study of subsea systems should consider the possibility of the occurrence of common causes. In this paper, a model to assess the effects of common mode failure on subsea systems is suggested. Two other models are also used in the analysis: The Marshal-Olkin model and the model suggested by Henley and Kumamoto. The results of the application of these models on the conceptual design of the Template-Manifold of Albacora are shown. Some mathematical approximations which allow a general and easy estimation of the effects of common cause failures are suggested.
KeywordsPrimary System Secondary System Primary Circuit Secondary Circuit Common Mode Failure
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- 3-.Dhillon,B.S. and Sing, C. Engineering Reliability:New Techniques and Application. John Wiley and Sons, U.S.A., 1981. ISBN–0–471–0514–8.Google Scholar
- 4-.Henley E. and Kumamoto, H. Reliability engineering and risk assessment. Prentice Hall, U.S.A., 1981. ISBN–0–12–7722516.Google Scholar
- 5-.Mc Cormick, N.J.. Reliability and Risk Analysis. Academic Press, U.S.A., 1981. ISBN–0–12–482360–2.Google Scholar
- 6-.Norwegian Petroleum Directorate. Guidelines for safety evaluation of the platforms 1981.Google Scholar
- 8-.Jolly, M.F. and Wraathhall, J.. Common-Mode Failures in Reactor Safety Systems. Nuclear Safety 1977, 18 (5), p624.Google Scholar