HIPPS is an acronym for High Integrity Pressure Protection System, which is a specific application of Safety Instrumented System (SIS). The function of a HIPPS is to protect downstream equipment against overpressure or upset conditions coming from the upstream. This is achieved by quickly closing two in-series dedicated safety shut-off valves to preventing further pressurization of downstream piping.
It is designed in order to reach the desired fail-safe condition for the process according to the following standards:
IEC 61508:”Functional Safety of Electrical/Electronic/Programmable Electronic Safety Related System”
IEC 61511:”Functional Safety: safety instrumented systems for the process industry sector”
ANSI/ISA S84.01:”Application of Safety Instrumented Systems for the Process Industries”
Sigma perform and supply HIPPS base on SIL3 or SIL 4 products.
- Shutdown of part systems and equipment
- Isolate hydrocarbon inventories
- Isolate electrical equipment
- Prevent escalation of events
- Stop hydrocarbon flow
- Depressurize / Blow down
- Emergency ventilation control
- Close watertight doors and fire doors