Safety Critical Element Management Manual


Appendix 3 - Guidance on SCE groups and minimum performance assurance levels



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Appendix 3 - Guidance on SCE groups and minimum performance assurance levels
EP 2009-9009
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SCE group listing (continued)
SCE goal
Typical equipment types
Description
Minimum level
SCE group SD007
SCE group title Subsea Isolation Valves (SSIVs)
Subsea isolation valves to isolate a flammable or harmful pipeline inventory from the offshore Facilities.
To isolate the pipeline inventory from the riser. To prevent additional pipeline inventory from causing escalation of an existing incident. (Only applicable offshore).
At item level, i.e. per valve.
SCE group SD008
SCE group title Drilling Well Control Equipment
Well control equipment required during drilling in case of loss of control of the well resulting in a drilling blowout.
To contain hydrocarbons and other hazardous substances, and to isolate the well in response to an upset/abnormal event. Drilling Blowout Preventers (BOP)s, BOP Hydraulic
Control System, Choke manifold, Atmospheric and vacuum Degasser, Diverters, Kelly Cocks and Stab- in Valves, Well Kill System, Flow and Gas Detection
(including Kick Detection) for Drilling Operations.
At system level

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