60Te Horizontal Lay System

The MDL HLS-60 is a portable horizontal lay system for the deployment and recovery of subsea umbilicals, risers and flowlines (SURF).

The system allows for safe and efficient deployment of product from on-deck reel drive systems and carousels.

Operational Specification

Lay spread type
Portable Horizontal Lay System

Dimensions
17.9m x 8.0m x 10.9m (LxBxH)

Weight
80Te excluding tensioner

Work platform deck area
17.5m2

Work platform deck capacity
0.5Te/m2

Work platform opening
2.9m/4.3m (widest)

Clearance between overboarding chute and support table
4.0m

Product Handling Requirements

Maximum product tension
60Te (dynamic load)

Product diameter
50mm - 600mm OD

Overboarding chute radius
3.75m/4.2m

Max side load on tulip
10Te

Runway beams' capacity
2Te

Lifting Equipment

All items supplied with integrated lift points and swivel lift eyes.

System suitable for onshore lifts in accordance with DNV standards.

Power Requirements (HLS only)

3 phase, 440V (+earth), 60Hz

140amp supply

36kW HPU required

Assumed Conditions

Humidity
Up to 100%

Atmosphere
Marine/high salinity

Design temperature
Operational: -10ºC to +50ºC

Survival: -20ºC to +65ºC

Additional Information

A modular system that is road transportable for economical road/sea transport.

The main HLS structure combines a tensioner frame, overboarding chute, a moving work platform and centraliser tulip. The system also incorporates an inboard end termination support table or low tension chute and integrated runway beams for buoyancy installation/removal.

All operational areas of the HLS are accessible by ladders and walkways, complete with handrails.

The HLS integrates with MDL range of tensioners up to 60Te line pull.

E-stops are mounted at each end of the HLS base frame allowing for safe control of operations.

For alternative deck layouts, the system can be supplied with a dedicated 3.75m radius deflector, fixed on a frame foundation which can slide on a deck grillage via a hydraulic cylinder system.

A Samson Post can be provided c/w sheaves for direction change for lowering and recovery ends via an A&R winch system. There are further sheaves incorporated into the HLS for this purpose also.

60 Te HLS 1