md-75-vls

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BUSINESS DEVELOPMENT & DESIGN

62 Dee St | Aberdeen | Scotland | AB11 6DS

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MANUFACTURE & SERVICES

Wilson St | Peterhead | Scotland | AB42 1UD    R   e   v   :    0    1

Product Datasheet

75Te Portable

Vertical Lay SystemThe PVLS-75Te is a portable vertical lay system for the

deployment and retrieval of subsea umbilicals, risers and

owlines (SURF). The innovation acilitates the transit

o exible products rom on-deck carousels or reel drive

systems to a vertical orientation so that they can be installed

over the side or through the moon pool o a vessel.

BeneftsProduct Handling: The PVLS hasthe functionality to incorporatea 10Te pull through winch and5Te tugger winches or workingin the moonpool area. For product

installation and recovery, thetop radius chute can eet by15ºfore and aft and the outboard

end retracts for varying diameterproducts.

Work Platform: The workplatorm is ftted with pad eyesfor attachment of rigging to aidhandling o the product. Two 

5Te trolley hoists are positionedon runway beams throughthe centre o the tower to aidinstallation of buoyancy modulesand ancillary equipment.

Hang-Off Beam: The hang-offbeam is retracted during normaloperations but can be hydraulicallydriven into the fring line ormidline connection and hanging

o products.

Access: All areas of the PVLS are

accessible by integrated staircases,walkways and handrails.

Modularity: The complete PVLS

can be broken down quickly intomodular components for both seaand road transport. The maximumsingle component lift is 10Te(excluding tensioner components).

Functionality: Integrated controlvan, tensioner powerpack(i Maritime Developmentstensioner supplied) and PVLS

spares container. The unit can beinteraced with any o MaritimeDevelopments suite o equipmentsuch as winches, deck radius

controllers and compensatorsor reel drive systems, as well as

alternative suppliers’ equipment.

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Operational

SpecifcationLay spread type

Portable Vertical Lay System

Max pipe tension

75Te (dynamic load)

Max hang-off clamp tension

80Te (dynamic load)

Design life

25 years

Design temperature

Operational: -10ºC to +50ºC

Survival: -20ºC to +65ºC

Product Handling

Requirements (cont)Weight (excl. tensioner)

167Te

Hang-off to tensioner clearance

6.6m

Moonpool door to tensioner

clearance7.4m

Work platform deck area

27m2

Work platform deck capacity

1Te/m2

Work platform opening3m

Lifting EquipmentAll items supplied with dedicatedrigging rated for onshore lifts

Departure Chute(option)20º o-lead

5º ore and at

Power Requirements(VLS only)1x 55kW

1x 75kW

Design AppraisalDesign appraised in accordancewith DNV standards

Assumed ConditionsHumidity

Up to 100%

AtmosphereMarine/high salinity

Product Handling

RequirementsLow tension MBR top

4m top chute (10Te)

Min pipe diameter

50mm OD

Max pipe diameter

650mm OD

Movable top chute

±15º

PVLS GeometryDimensions (approx. dependingon confguration)

12m x 9.6m x 22.7m (LxBxH)

PVLS-75Te