High Integrity Pressure Protection System (HIPPS)

L&T Valves offers a range of customized SIL-3 capable High Integrity Pressure Protection Systems (HIPPS) for over-pressure protection leveraging our expertise of five decades in flow-control and system integration. High Integrity Pressure Protection System (HIPPS) is a Safety Instrumented System (SIS), which by definition, is a distinct, reliable system used to safeguard a process to prevent a catastrophic release of toxic, flammable, or explosive chemicals. In industrial plants, flare systems are primarily used for burning off flammable gases released by pressure relief valves during unplanned over-pressurization of plant equipment. Flaring and venting constitute a significant source of greenhouse gas (GHG) emissions, and the elimination of GHG emissions from flaring in the world would account for at least 10% of total emissions reductions as per the Kyoto protocol. HIPPS can be employed to prevent over-pressurization of a plant by shutting-off the source of the high pressure gas rather than by releasing it to the atmosphere. This system closes the source of over-pressure within two seconds and has at least the same reliability as a safety relief valve or flare system.
HIPPS can be used for Chemical reactions so fast the pressure propagation rate could result in loss of containment prior to the relief device opening, Chemical reactions so fast the lowest possible relieving rate yields impractically large vent areas, Exothermic reactions occurring at uncontrollable rates, Plugging, polymerization, or deposition formed during normal operation, Reactive process chemicals relieved into lateral headers with polymerization and thus plugging, rendering the relief device useless, Multi-phase venting, where actual vent rate is difficult to predict and Reducing GHG through regulations such as Kyoto protocol.