A proposal for a RAMS engineering process for blowout preventers
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A blowout preventer is a safety critical system used during drilling operations. BOP is system of valves to seal, control and monitor oil and gas in a well. The BOP system is of great importance, since it prevents environmental pollution and loss of human life and health. Thus, BOP system should fulfil high reliable and safety requirements.The requirements for BOP reliability and safety features can be found mostly in Norwegian and American regulations. The thesis is an attempt to organise and compare regulations and standards, which are world recognisable and commonly used for offshore oil and gas drilling. Also, researches of BOP failures, reliability data and data from testing BOP are important sources of BOP system reliability and safety. To categorise and order regulations, standard and researches in one comprehensive report for BOP system, RAMS engineering model is used.RAMS is an abbreviation for reliability, availability, maintainability and safety. RAMS oriented life cycle model focus on product s features and characteristics, which fulfil RAMS requirements. RAMS engineering model consists of 8 phases. Each phase is a phase of product life-cycle with taking into account RAMS activities.The attempt to create RAMS engineering model for BOP system is motivated by need for improvement the BOP s reliability and safety. In view of recent incidents, for example Deepwater Horizon accident in the Gulf of Mexico, the BOP s technology should be developed.