Design basis
Inputs include protected-system MAWP and design pressure, credible overpressure scenarios, source pressure, process dynamics, required response time, safe-state definition, demand rate and target risk reduction.
Process Safety Packages · ENGINEERED SCOPE
High-Integrity Pressure Protection System — HIPPS
A HIPPS is an instrumented protection system intended to prevent downstream overpressure by detecting a hazardous pressure condition and rapidly isolating the pressure source. It is engineered as an independent protection layer only after the relief and flare philosophy has been established.
Engineering approach
High-Integrity Pressure Protection System — HIPPS
A technically defined package begins with the operating envelope—not a catalogue model.
Rated capacity, minimum stable load, feed envelope, inlet and outlet conditions, product specification, start-up and shutdown cases, design life and acceptance criteria are agreed before equipment definition is frozen. Package basis also fixes battery limits, skid envelope, lifting and shipping constraints, utility tie-ins, FAT scope, preservation requirements and commissioning deliverables.
Process configuration
The package typically integrates redundant pressure transmitters, a safety logic solver, final isolation elements, partial-stroke testing, dedicated panels and diagnostics. Voting architecture and independence are derived from the SIL lifecycle and project standards.
Verification focus
Verification includes hazard analysis inputs, SIL allocation and validation, response-time calculation, valve closure transient, common-cause review, bypass control, proof-test interval, cybersecurity interfaces and functional-safety documentation.
PROJECT DEFINITION · DELIVERY
Clear inputs, auditable outputs
Technical proposal quality depends on verified process data, acceptance criteria and interface definition. The following information is confirmed during clarification.
RFQ information
- “Sensors and voting logic”: Derive sensor type/count, voting, range, diagnostics and BPCS boundary from the hazard analysis.
- “Shutdown valves and response”: Specify fluid, valve class/size, pressure drop, actuator, fail position and required response for the valid scenario.
- Site utilities, ambient data, hazardous-area classification and battery limits
- Required performance guarantee, redundancy and availability philosophy
- Applicable project codes, materials, inspection requirements and document format
Engineering deliverables
- Equipment datasheet and design basis for “High-Integrity Pressure Protection System — HIPPS”, with service-relevant calculations where included in the supply scope.
- Heat and material balance, PFDs, P&IDs and utility summary
- Equipment datasheets, line and instrument lists, control narrative and cause-and-effect inputs
- Layout, nozzle and interface data, foundation loads and maintainability review
- Inspection and test plan, FAT documentation, manuals and final manufacturing record
RFQ
Discuss this duty with engineering
Share the operating cases, feed data and required guarantee so the applicable process route, package boundary and verification plan can be defined.
Technical Datasheet
Technical Datasheet — High-Integrity Pressure Protection System — HIPPS
The figures below are published valve-system options and a certified-system integrity example. They are not universal HIPPS design values or proof that any configured loop meets SIL requirements.
| Parameter | Published value | Basis / secondary data | Application limit |
|---|---|---|---|
| Available mainline valve sizes / pressure options | 1½–60 in; ASME Class 150–2500 | Published range of a valve family offered for HIPPS; API options also vary by series. | Valve size and rating are component selections, not a pressure/flow capacity band for the whole HIPPS. |
| System integrity / closure-time example | SIL 3; closure down to 2 s | Published certified-system offer and fast-closure option. | SIL is achieved only for the verified safety function and complete loop under the project SRS, PFDavg, proof-test and lifecycle requirements. |