High Integrity Pressure Protection System

L&T Valves offers a range of customised SIL3-capable High Integrity Pressure Protection Systems (HIPPS) for over-pressure protection

In industrial plants, in case of over-pressurisation, the gases released are primarily flared. Flaring and venting of flammable gases pose health and safety hazards and constitute a significant threat to the environment.

High Integrity Pressure Protection System (HIPPS) is a Safety Instrumented System (SIS), which by definition is a distinct, reliable system, used to contain catastrophic over-pressurisation and prevent the release of toxic, flammable or explosive chemicals.

HIPPS protects downstream equipment by shutting-off the source of over-pressure within seconds, and is designed to offer at least the same reliability as a safety relief valve or flare system.

Compliance Standards:

  • IEC 61511
  • IEC 61508


  • Valves - Ball or Butterfly
  • Actuators - Pneumatic, Hydraulic or Electro-hydraulic
  • Pressure Transmitters
  • Logic Solver – Solid state or Programmable Electronic Systems (PES)
  • High Integrity Manifold Block


  • Final control element (1oo2)
  • Solenoid valves (1oo2)
  • Pressure transmitters (2oo3)
  • Logic SolverRedundancy on I/O Cards, Relays, Communication and Power Module