In order to ensure its safe operation in arctic conditions, Ramboll carried out a winterization study on the Goliat FPSO on behalf of the operator ENI Norge.
Commissioning the Goliat field in the Barents Sea
The Goliat field is located within the Norwegian sector of the Barents Sea. The licensees for the field are Eni Norge and Statoil Petroleum, and production start-up at Goliat is planned for the end of 2013. Eni Norge and Statoil selected the FPSO concept in their plan for the development of the Goliat field. The Goliat FPSO consists of a circular facility containing a processing plant, oil storage capacity and accommodation facilities.
Ensuring safe offshore operation in arctic conditions
As Goliat will be operating in a harsh environment with a design temperature of -18 degrees C, it was necessary to study the effects of the cold climate on both the structure itself and those working on it. Ramboll was engaged to carry out a technical safety study, wherein the objectives were to ensure a good working environment outside the FPSO, and to guarantee that the cold climate will not affect any safety systems. Further investigations were carried out to minimize negative effects on process conditions, and to avoid pollution. The study included:
• Review of all P&ID’s; insulation, heat tracing, materials, venting & drainage
• Review of 3D models; safety, working environment and stagnant fluids
• Review of all the relevant PSA, NORSOK and ENI requirements and specifications
• Establishment of the key points to be assessed for an arctic winterization strategy