High Integrity Pressure Protection Systems

Posted: Wednesday, April 13th, 2016 | By: Linda Goodrich

The evolution of High Integrity Pressure Protection System (HIPPS) has radically reduced the need for traditional mechanical relief devices and the level of flaring in oil and gas applications.

The connection of new gas production sources to a gas plant facility have often required mechanical relief devices for the protection of gas production facilities or pipelines. New production sources connected to existing pipelines require the pipeline to be protected against potential overpressure, which may result in the release of hydrocarbons to the atmosphere or undesirable burning of these hydrocarbons via a flare system. International standards (API 521, Code Case 2211 of the ASME Section VIII, Division I and 2, ANSI/ISA 84.01-2004, IEC 61511) are now in place to allow for the application of high reliability safety instrumented systems to replace traditional mechanical relief devices and to remove the need for flaring.

Economic Advantages:

  • Platform weight savings
  • Space savings
  • Project cost reduction
  • Increase operating pressure and production
  • Increased diagnostics
  • Increased flexibility
  • Mitigate risk
  • Reduce spurious trips and downtime
  • Reduce CAPEX (relief, flare, downstream piping)


Fully Integrated HIPPS Solution

ValvTechnologies’ scope of supply would typically include:

  • Shutdown valves (SDV) API, PSL level 3 (with optional flame protection), utilizing ValvTechnologies’ zero-leakage ball valves
  • Actuators (hydraulic or pneumatic)
  • Instrumentation, including pressure transmitters
  • HIPPS logic solver
  • Chemical injections system
  • Choke control
  • Complete HIPPS skid design and fabrication, if required


Final Elements:
Our HIPPS solutions utilize the ValvTechnologies’ NexTech® E, trunnion mounted, double block and bleed ball valves that are suitable for both the API and ANSI codes. NexTech® E offers an innovative solution:

  • One-piece top entry body
  • Bi-directional seat tightness
  • Controlled seat loading
  • Lower torque
  • Resistant to particulates
  • In-line serviceable
  • Double block and bleed


The Logic Solver:
The development of the HIPPS package is governed by IEC 61508 / 61511 which define specific guidelines to configure the SIS to provide the necessary risk reduction and meet the required Safety Integrity Level (SIL).

The Logic Solver uses standard, proven function block software and available options which include partial stroke testing, valve function logging (to support preventative maintenance regimes), communications to all major DCS systems and customized third party communication interfaces. The SIS controller can be provided from a range of IEC 61508 SIL 3 certified platforms, to include scalable 2oo3, 1oo2D and simplex architectures, with SIS choice dictated by functionality and availability requirements, system cost and customer preference.

Click here for more information on ValvTechnologies’ HIPPS solutions.


Metal-Seated Ball Valves, Seat-Supported and Trunnion, Side-Entry and Top-Entry, ANSI B16.34 and API-6A

Improved Reliability

  • Engineered for heavy-duty service and cycling
  • Tungsten carbide coating on ball and seats, 72 Rockwell C hardness
  • Impervious to solids and/or erosive particles in the fluid stream
  • Extended runs between maintenance
  • High reliability.  SIL-3 certified
  • Certified low fugitive emissions
  • Proven fire safe
  • Repeatable sealing under all operating conditions
  • High speed capability
  • Block and bleed for confirmation shut-off
  • Enhanced safety


Engineered to Industry Standards

  • Certified to SIL-3 by Lloyds
  • Tested and certified Fire-Safe to API-607 5th Edition (ANSI valves) and API-6FA 3rd Edition (API-6A valves) standards
  • Tested and certified to ISO 15848-1 Class B and TA Luft Fugitive Emission Standards
  • Exceeds shut-off requirements of API-598, FCI 70.2 and MSS-SP-61
  • Full PMI of all components
  • NACE MR-01-75/ISO 15156
  • Top-entry trunnion certified at 10000 feet (3048 meters) of depth in a hyperbaric chamber
  • Meets global design standards and certifications:
    • ANSI
    • API
    • ATEX
    • PED
    • CE
    • CRN
    • GOST and RTN ( Rostekhnadzor)


Assured Performance

  • Certified 1300 years MTBF for full stroke and 580 years MTBF for shut-off
  • Lowest cost of ownership in the industry
  • Self-cleaning and self-lapping seating surfaces
  • Material selection based on application requirements
  • Proven gland packing system – heavy duty live-load design
  • Anti-blowout stem design
  • Anti-static feature by design
  • Automation per customer specification
  • Service and support worldwide