Abstract
Abstract Java Island is the most populated island in the world and consists of many sensitive areas include community, fishery site, mangrove and recreational beach. Pertamina EP Cepu Regional 4 (East Indonesia Region) has 2 major offshore oil & gas platform facilities near Java Island shoreline which are Pertamina Hulu Energi WMO Field (WMO Field) and Pertamina EP Sukowati Field (Sukowati Field) that have the potential of releasing more than 100.000 Barrel (total) of crude oil into sea in case of emergency. Learning from previous oil spill event, it is crucial for the company to control risk that could occurs by establishing an effective Oil Spill Contingency Plan (OSCP) document in order develop an effective countermeasure to define action plan to control and clean oil spill. The OSCP starts by identifying operation activities with significant oil spill risk (scenarios). Based on PHE WMO and PEP Sukowati oil spill risk assessment, 8 oil spill scenarios (3 scenario for WMO Field and 5 scenarios for Sukowati Field) are identified as threats related with potential oil spill direct impact to sensitive area and communities. Scenarios identified are then simulated in Oil Spill Trajectory Model Software that involves sea current and wind of local condition to predict oil spill trajectory throughout different seasons of the year resulting calculation of estimated time and place of oil spill impact. The OSCP include sensitivity map to identify resources needed. In addition of risk analysis and oil spill simulation, the OSCP also consists of methodology and technique to specify monitoring, evaluation, mechanical/chemical handling, shoreline protection at different type of area. Major event identified through risk assessment are FSO spill, vessel collision, subsea/export pipeline rupture and well blowout. Major oil spill scenarios occur during West Season (Dec-Feb). According to Field oil spill trajectory simulation, oil spill will reach shoreline 2 to 144 hours after oil spill released. Based on exercise and terrain assessment, the impacted area could be reached in max 60 minutes (Sukowati Field scenario) and 2-3 hours (WMO Field). Each scenario is assessed for oil spill strategy based on time and place of impact, sensitivity, equipment mobilization interval and environment surrounding and determine action needed to contermeasures oil spill impact. The accuracy of the OSCP document implementation and effective emergency intervention will be able to provide a promising responding method to control oil spill pollution.
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