Brent Delta topsides removal

General information

Client Shell UK Ltd 
Project Brent Delta topsides removal 
Year 2017 
Location North Sea, UK 
Vessels Pioneering Spirit 
Max. water depth 140 m (460 ft)
Platform type GBS
Weight (t) 24,000
Dimensions L x B x H (m) 74 x 72 x 130 (incl. flare stack)
Number legs 3
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

• 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