8.1 Scope of Decommissioning Safety Case The scope of the decommissioning safety case is taken from the Designated Petroleum Activities Regulations and is up to the point where any apparatus designed to contain or convey petroleum that comprises or forms part of such petroleum infrastructure is free of hydrocarbon. Where there is decommissioning of a pipeline, or commencement, or preparation for the removal of primary or secondary structures with a view to complete decommissioning of the petroleum infrastructure, the petroleum undertaking must hold a Decommissioning Safety Permit for that specific decommissioning activity which will be issued pursuant to an approved Decommissioning Safety Case. A Decommissioning Safety Case must describe the process of decommissioning and demonstrate how the risks associated with that process are reduced to a level that is ALARP. Where there is decommissioning of apart of petroleum infrastructure described in a Production Safety Case, this will be captured and assessed through the material change process in respect of the Production Safety Case. There is no requirement to produce a Decommissioning Safety Casein respect of a partial decommissioning of petroleum infrastructure.
