Brent Delta topsides removal

General information

ClientShell UK Ltd 
ProjectBrent Delta topsides removal 
LocationNorth Sea, UK 
VesselsPioneering Spirit 
Max. water depth140 m (460 ft)
Platform typeGBS
Weight (t)24,000
Dimensions L x B x H (m)74 x 72 x 130 (incl. flare stack)
Number legs3
Leg diameter (m)15
Cut location +/- sea level (m)16

Scope of work

• Engineering, procurement and removal of the 24,000 t Brent Delta topsides
• Pre-lift preparation work including design of under deck lift points and strengthening of the module support frame
• Cutting of the platform legs
• Design and fabrication of lifting yokes, support stools and grillage
• Transfer of topsides from Pioneering Spirit  to Iron Lady  and load-in to dismantling yard (Hartlepool, UK)

Project specials

• World record lift
• Design and fabrication of lift yokes and stabilisation frames
• Design and fabrication of GBS concrete leg covers
• Design and construction of leg support structures
• Design of barge grounding bed

Challenges
• Heaviest lift to date with the topsides lift system, and first lift utilising all 16 beams
• Efficient design, fabrication and installation of platform lift points and strengthening while the platform being decommissioned
• Complete cutting of the legs prior to the single lift