Pressure protection

Specialist safety systems integrator Hima-Sella has supplied High Integrity Pressure Protection Systems (HIPPS) for use on five of Oil & Natural Gas Corporation's (ONGC's) unmanned wellhead platforms, as part of the operator's B-193 cluster development off Western India.

Eddy Turnock, Hima-Sella's sales & marketing director, says: "Our HIPPS is a safety instrumented system designed to prevent overpressurisation of downstream plant and equipment, by isolating flows at source or at key points along a pipeline." Each HIPPS is independent of all other safety systems on the platforms - thus providing an isolated, fully autonomous and fail-safe layer of protection - and comprises: three electronic pressure transducers; a dedicated HIQuad programmable electronic system; and HIPPS shutdown valve/actuator assemblies, each with dual solenoid valves.