Hydraulic power units and control systems
From wellhead to point of sale: our hydraulic control and safety systems are essential for the ongoing efficiency and safety of your operations
Working with the hydraulics experts at SMS to deliver reliable, effective and low-cost hydraulic power and control solutions
Hydraulic Power Unit (HPU)
With high working pressures up to 1379barg / 20,000psig, our Hydraulic Power Units (HPUs) are designed to provide high and low pressure filtered hydraulic fluid to – often safety critical – control valves. In the event of a loss of power, stored volume is provided via accumulators to ensure safe and effective operation.
With extensive experience in the design, manufacture and maintenance of hydraulic power units, SMS-Alderley can deliver solutions to support a variety of production and marine requirements.
This includes HPUs for:
- production systems incorporating topside and/or subsea control valves
- barrier fluid valves
- turret actuated valves and disconnect systems
- ballast control valves
Intervention & Workover Control System (IWOCS)
Our Intervention and Workover Control Systems enable intervention and completion work on wells through existing subsea systems or control of intervention tooling, meaning you can further install and work on your subsea equipment without incurring unnecessary downtime.
Our IWOCS typically include:
- High working pressures up to 1379barg / 20,000psig
- Bladder and/or piston accumulators (PED, ASME VIII Non or “U” stamped, AS 1210)
- Electrical or pneumatic control options
- Integral autonomous MCC and PLC
- Integral or standalone reservoirs, size to suit application
- 316 stainless steel or carbon steel enclosed or open framed construction
- Wide range of tube fitting types, e.g. twin ferrule compression, MP coned & threaded and Parker Hannifin MPI™
- Wide range of materials and exotics available, e.g. 316/316L, 6Mo, Incoloy 625, Incoloy 825, 904L, Super Duplex, Duplex
- Electric and/or pneumatic pumps suitable for use with mineral oil or water glycol based fluids
- Environmental loadings can include: vessel motions, wind and blast loadings
- Customer stab plate and connector requirements integrated into unit
- Safety Integrity Level up to SIL3
- Safe area and hazardous environments (Zone 1/2, Class 1 Division 1/2), to ATEX, IECEx or NEC (NFPA 70)
- Standard temperatures design in accordance with EN 13628-6, systems also available with Extended and Arctic ratings
- Design and certification to DNV2.7-1 and DNV2.7-3
- When required designed to the relevant NORSOK standards
Testing & Flushing HPU
Our Testing and Flushing Hydraulic Power Units (TFHPUs) are designed to provide test fluid at the required pressures for leak, proof and functional testing as needed, and flushing fluid at variable flow rates to clean external systems.
TFHPUs designs can include:
- 316 stainless steel or carbon steel enclosed or open framed construction
- Wide range of tube fitting types, e.g. twin ferrule compression, MP coned & threaded and Parker Hannifin MPI™
- Wide range of materials and exotics available, e.g. 316/316L, 6Mo, Incoloy 625, Incoloy 825, 904L, Super Duplex, Duplex
- Electric and/or pneumatic pumps suitable for use with mineral oil or water glycol based fluids
- Power cables and hoses with customer specified connections supplied with unit
Topside Umbilical Termination Unit (TUTU)
Located adjacent to the umbilical hang-off and interfacing with other hydraulic and control units, for example the Hydraulic Power Unit or Master Control System, our Topside Umbilical Termination Units (TUTUs) enable the controlled bleeding of systems to help avoid unexpected depressurisation.
TUTUs at a glance:
- High working pressures up to 1379barg / 20,000psig
- Single, double or custom isolation philosophies
- Systems for liquids or gasses
- Junction boxes for electrical terminations
- Pressure gauges externally visible
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