Control unit for hyperbaric TIG welding chamber
The overall objective of the present project is to establish basic understanding of deep water pipeline repair welding and hot tapping, as studied in both national and international laboratories using pressure chambers to simulate dry hyperbaric welding conditions.

In order to accomplish this, the following verifiable scientific subgoals are set:

  • To develop fundamental knowledge on hyperbaric welding technology for future full remote control in welding of pipes, including normal pipes and clad pipes.
  • To study the behaviour of different consumables, including shield gas composition and filler metal chemical composition.
  • To develop mathematical models for electromagnetic induction heating.
  • To develop relevant models for simulation of heat flow in hyperbaric MIG with different bevel configurations (heat input, preheat/post heat, shielding gas type, pipe temperature, etc).
  • To develop models tailored for cold cracking susceptibility predictions capturing hydrogen pickup, diffusion, microstructure evolution, restraint intensity, and integrity assessment.
  • To educate 2 PhDs.
  • To work out 10 papers for international journals, and 10 papers for international conferences.

Published January 15, 2010

IFE        -        NTNU        -        Statoil        -        Technip        -        Gassco        -        EFD Induction        -        SINTEF         -        Research Council of Norway