Application of ALARP to the design of the BP Andrew platform against smoke and gas ingress and gas explosion

摘要: Abstract In the UK, it is a legal requirement for safety case to be produced each offshore installation. A involves process called ‘formal assessment’ in which all hazards and risk personnel on platform are identified quantified. The operator or designer of installation required demonstrate that below level deemed unacceptable, any case, reduced as low reasonably practicable (ALARP). an existing facility, reduction measures can judged ‘reasonably practicable’ by balancing cost implementing measure benefit terms set against baseline (i.e. current facility). design new facilities, there no pre-existing level. demonstration application ALARP through design. This paper describes work undertaken during BP Andrew assess reduce temporary refuge (TR) impairment due gas explosion smoke ingress. analysis was integrated Project; technologists at using state-of-the-art quantification methods were part engineering team Brown & Root. allowed Project identify practical changes their could significantly without incurring schedule penalties. fact, project able both TR i.e. negative measure! Two examples included how principle achieved two different routes: (a) designed worst-case event, thus achieving lowest possible risk, (b) available options accurately quantified understood option with chosen. final less than 4 × 10 −5 per year end