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

Components:

• 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

Redundancy:

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