Structural Engineering

GERB / PRB Spool Analysis and Spreader Beam Design (2017) 

A range of spreader beams were required as part of planning for a contingent recovery campaign of 18" spools from the seabed for the Ichthys LNG Project. Linch-pin carried out the design of the spreader beams as well as an analysis for the operability of the vessel crane to perform the operation.


Balnaves RTM Clump Weight Recovery System (2016) 

A purpose designed Subsea Clump Weight Recovery System was required to assist in the decommissioning of the Balnaves Riser Turret Mooring. This technically challenging project was delivered to suit the tight offshore removal schedule.


EPRS Lifting and Handling Frames (2015-2016)

Linch-pin developed an innovative, simple, and effective concept for an Emergency Pipeline Repair System (EPRS) for Qatar Petroleum to be used in the Arabian Gulf. The design had tight restrictions on frame weights and sizes, whilst also being required to repair pipeline sizes ranging from 12” through to 60” in diameter.


Subsea Chain Puller (2014 - 2015) 

Linch-pin developed the decommissioning concept for the removal of the NCC Buoy.  The concept involved the use of Linch-pin’s proprietary Subsea Chain Puller to remove tension from the buoy tethers prior to cutting them.


East Spar Decommissioning - GBS Analysis (2014 - 2015) 

Linch-pin developed the decommissioning concept for the removal of the East Spar facilities. The existing Gravity Base Structure (GBS) was used to restrain the buoy during the removal operation.


Personnel Transfer System

Linch-pin assists Ampelmann and offers its structural and installation engineering expertise in providing practical methods of supporting and seafastening the gangway system to vessel decks and providing stair tower access for personnel staging areas.


Thevenard Retirement (2013 - 2014) 

The TVI Retirement Project consisted of the removal of 9 wellhead platforms from the North West Shelf of Western Australia. Linch-pin carried out the detailed structural analysis and design for the removal of the platforms using a Heavy Lift Vessel.


EPRS Subsea Lifting Frame (2014) 

Linch-pin carried out a detailed structural design and analysis for an Emergency Pipeline Repair System (EPRS) to be utilised in the Timor Sea.


Ichthys URF In-Line Tee (2013) 

Linch-pin personnel developed a concept for the 18" Production In-Line Tee and carried out the detailed structural engineering design.


Montara WHP Commissioning Marine Support (2012)

As part of the Montara Recovery Project, Linch-pin assisted PTTEP during the Montara WHP Commissioning by providing marine, logistics and permitting support including.


Ichthys URF IN-Line Structures (2012) 

Linch-pin personnel lead a multi-discipline team to develop conceptual designs for 10 different In-Line structures on the Ichty's URF project.


Montara WHP Riser Replacement (2012)

Linch-pin was invited by PTTEP AA to assist them with developing and managing a contingency campaign to prepare for and, if necessary, replace the Montara WHP risers.


Subsea Manifolds (2012) 

Linch-pin personnel were seconded into Intecsea to lead a multi-discipline team of Engineers and Draftspeople on the Ichthys URF project. As part of that work a concept design for a 3000t to 4000t Gas Export Riser Base (GERB) in 250 m of water was developed.


Mid Depth Buoys Conceptual Development (2012) 

Intecsea engaged Linch-pin personnel to provide a conceptual design of Mid-Depth buoys for the Ichthys field in 250m of water. The MDBs were required to meet a functional specification for the operator INPEX.


Gas Development (2010) 

Detailed front end study to develop a steel, gravity based wellhead platform concept with modular drilling.


Flowline Reel Assessment (2010) 

Linch-pin completed a full condition survey and structural assessment of an 'out-of service' 250t capacity flowline reel.