Hydraulic Power Unit

hydraulic power unit (HPU)

Seller is open to offers and pictures available on request.


This product is a hydraulic power unit (HPU) and control panel which can pump and store hydraulic fluid at high pressure (HP=10Kpsi) and low pressure (LP=3Kpsi). The HPU has a series of valves and controls to allow the trained user to operate functions on customer field equipment when connected via, for example, hydraulic connectors/stabplates, hose jumpers and umbilical reeler. The full set of equipment comprises an Intervention Workover Control System (IWOCS) designed to, but not limited to, operate in the Central and Northern North Sea on semi sub or monohull drilling vessels for decommissioning work.

The unit can be operated in a hazardous are Zone 1, gas Group IIB, Temperature T5 environment and is suitable for rig air at 100psi and 230 V AC / 60 Hz electrical supply for the lighting system.

There are a maximum of 5 off HP lines including spares and 28 off LP lines including spares for connections.

The accumulator bank installed in the unit comprises 2 off 10Kpsi/690 bar max pressure 35 litre accumulators and 5 off 6Kpsi/420 bar max pressure (although working pressure is reduced to 3Kpsi) 50 litre accumulators.

There is a return tank volume of 600 litres and a supply tank volume of 1000 litres. A transfer pump moves hydraulic fluid from the return tank to the supply tank and is operated by the trained user.

The HP & LP pumps are Hydratron: 1 off DA-66 for the LP system and 2 off DA-118’s for the HP system. The second DA-118 is a backup/secondary pump for supplying both the HP system and the LP system via a pressure reducing valve.


Container Dimensions

Overall Container Dimensions : 2991 mm L x 2438 mm W x 2591 mm H

Weight : 5 tonnes (est.)

Forklift Pockets : 310 x 105 with 900 centres

Operational Specification

Hazardous Area Zone 1 : CE Ex II 2G Ex c IIB T5 Gb

Offshore Lifting Certified : BS EN 12079 / DNV2.7-1

Design Temperature : -20°C to +40°C

Container Specification

Container serial no. B3620-001 was purchased from third party and was designed and manufactured in accordance with the relevant parts of ISO 1496 & DNV 2.7-1. Container was manufactured within an ISO 9001 Quality System.

Safety Shutdown Systems
Three off separate E-stops.
Pressure – LP pressure cutout at 207 bar and HP pressure cutout at 690 bar for pumps.
Low level cutout in supply tank

Hydraulic System

See Section 5.


The unit has been designed in accordance with the following standards:

· Machinery Directive 2006/42/EC

· ATEX Directive 2014/34/EU for Zone 1 Areas

· Offshore Containers DNV2.7-1

· Offshore Containers BS EN 12079-1:2006

*Pressure Equipment Directive (PED) 2014/68/EU does not apply under Section 2 (f) (vi) as product is covered by ATEX but in any case:

– Accumulators have been produced to design code BSEN 14359:2006

– Accumulators approval PED 97/23/EC

– All other components are covered by SEP


Item is virtually new ex Cameron, refurbished by Hydrus

All certification and documents available.

Location UK