Ninian North

General information

ClientCanadian Natural Resources International (CNRI) 
ProjectNinian North 
LocationNorth Sea (UK) 
VesselsPioneering Spirit, Oceanic 
Max. water depth140 m (460 ft)

Scope of work

  • Engineering, preparation, removal, load-in and disposal (EPRD) of 12,500 t topsides and partial (7,000 t) eight-legged steel jacket
  • Pre-lift preparation work including design and installation of underdeck lift points and removal/separation of pipework and obstacles
  • Cutting of the platform legs
  • Design and fabrication of “horseshoe” lifting units, support stools and grillage
  • Transfer of topsides from Pioneering Spirit to Iron Lady and load-in to dismantling yard

Project specials

  • First jacket removal utilising vessel’s revolutionary jacket lift system (JLS)
  • Design and fabrication of horseshoes and extension pieces for topsides lift
  • Complete cutting of the legs one year prior to the single lift