High Integrity Pressure Protection System

  1. L&T Valves offers a range of customised SIL3-capable High Integrity Pressure Protection Systems (HIPPS) for over-pressure protection
  2. 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.
  3. 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.
  4. 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

  1. IEC 61511
  2. IEC 61508


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


  1. Final control element (1oo2)
  2. Solenoid valves (1oo2)
  3. Pressure transmitters (2oo3)
  4. Logic Solver – Redundancy on I/O Cards, Relays, Communication and Power Module