HIPPS (High Integrity Pressure Protection System)
A safety instrumented system designed to prevent overpressure in a vessel or pipeline, typically instead of or in addition to a conventional safety relief valve. Uses SIL-rated fast-closing valves, logic solvers, and pressure transmitters. Requires IEC 61511 functional safety assessment.
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What is a HIPPS (High Integrity Pressure Protection System)?
A safety instrumented system designed to prevent overpressure in a vessel or pipeline, typically instead of or in addition to a conventional safety relief valve. Uses SIL-rated fast-closing valves, logic solvers, and pressure transmitters. Requires IEC 61511 functional safety assessment.
What standards apply to HIPPS (High Integrity Pressure Protection System)?
Safety system valves and components are governed by IEC 61508 (functional safety of electrical/electronic/programmable systems), IEC 61511 (functional safety for the process industry), and API standards as applicable (API 607 for fire testing, API 6D for pipeline isolation). SIL-certified valves require a systematic capability (SC) assessment and SFF (Safe Failure Fraction) documentation from an accredited certification body (TÜV, Exida).
How does HIPPS (High Integrity Pressure Protection System) interface with the Safety Instrumented System (SIS)?
Safety valve components in a SIS must be specified with: (1) required SIL level (SIL 1–3 for process industry), (2) diagnostic coverage (DC), (3) proof test interval and procedure, (4) mean time to dangerous failure (MTTFd), and (5) systematic capability (SC) per IEC 61508. Actuators, solenoids, and positioners are included in the SIL assessment as the final element. Vajra Industrial Solutions can provide SIL-documented valve assemblies with the required functional safety data.
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