Safety Critical Element Management Manual

SCE group PC004 SCE group title

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Shell EP 2009.9009 SCE Management Manual
POSITION PAPER 130[shell verification]

SCE group PC004
SCE group title Tanks
Tank envelope including the liquid and vapour spaces.
To maintain leak tight integrity.
Hydrocarbon or hazardous material process tanks in the following services oil production, processing, handling and export condensate processing, handling and export flammable or hazardous chemicals crude oil storage diesel tanks
At item level, i.e. per tank
SCE group PC005
SCE group title Piping Systems
Piping systems.
To maintain the integrity of pipework including instrument tubing and flexible hoses which contain flammable, or explosive liquid or gas.
Piping systems containing flammable or hazardous fluids under pressure within and between operating units within and between modules
At subsystem level
SCE group PC006
SCE group title Pipelines
Onshore and offshore
Pipelines between Facilities including flexible pipelines,
risers and J-Tubes that contain risers. Typical pipeline limits are between the pig trap isolation valves at each end of the pipeline although the critical elements maybe a section of the pipeline,
depending on the assessment of risk.
To maintain integrity of the pressure envelope.
Pipelines in the following services export/import crude oil export/import gas export/import condensate/NGLs
• production reservoir fluids from remote wells flammable chemicals used for injection into remote wells lift gas gas/water injection
At item level i.e. per pipeline

Safety Critical Element Management Manual
EP 2009-9009
Restricted
40
SCE group listing (continued)
SCE goal
Typical equipment types
Description
Minimum level
SCE group PC007
SCE group title Relief System
Relief systems designed to protect pressure containing equipment and piping from over or under pressurisation.
To prevent a loss of containment of process fluids in upset conditions and the controlled disposal of hydrocarbon fluids Safety relief valve Pressure Vacuum Valve Associated relief pipework
At item level, i.e. per relief valve

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