SCE group SI008 SCE group title Drilling Systems Drilling Systems (Offshore and Onshore) which control the well during drilling operations to prevent blowout or damage to well or related Facilities. Refer also to GPST SI001 Subsea/Vessel Hull/GBS/ Foundation Structures and SI002 Topside Structures Structural integrity requirements described in the contract documents for contracted rigs. At system level SCE group PC001 SCE group title Pressure Vessels Pressure vessels that contain hydrocarbons, chemicals or other materials providing fluid containment under normal operating conditions. To maintain integrity of the pressure envelope. Vessels in the following services oil or gas production, processing, handling and export condensate/NGL processing, handling and export gas injection fuel gas, treatment and heating flare scrubber/knock out drum flammable chemical steam generation Inert gas storage At item level, i.e. per vessel