Valhall QP topsides removal

General information

ClientAker BP 
ProjectValhall QP topsides removal 
Year2019 
LocationNorth Sea (Norway) 
VesselsPioneering Spirit 

Scope of work

  • Engineering, preparation, removal, and disposal (EPRD) of the 3400 t accommodation topsides (QP) and 109 t connecting QP-DP bridge
  • Pre-lift preparation work including underdeck scaffolding and removal of obstructions under cellar deck for access to lift points, installation of shear brackets and uplift restrainers on legs, cutting and removal of caissons, removal of bridge obstructions, installation of bridge pivot guide, NDT critical joints
  • Cutting of grouted platform legs
  • Design and fabrication of TLS yokes interfaces, Navigational Aid and grillages
  • Transfer of topsides from Pioneering Spirit to a cargo barge and load-in to dismantling yard (Norway)
  • Topsides and bridge disposal

Project specials

  • Lightest offshore lift operation for Pioneering Spirit ‘s (to date)
  • Design and fabrication of lift yokes X and Y stoppers interfaces to suit bottom of cellar deck without added steel to the topsides
  • In-house design and fabrication of navigational aid to be installed on jacket after removal
  • Offshore preparations carried out in both “cold” and “live” oil & gas platform environments in Valhall field