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Cold Test

Nitrogen is injected into pipelines to reduce the temperature in order to test their structural integrity. The test confirms the displacement and expansion of pipelines, functional performance of insulation system at low temperature as well as avoid thermal shock prior to commissioning.

Who is GTT?

GTT is a leading engineering company in containment systems for the shipping and storage in cryogenic conditions of LNG (liquefied natural gas). Approved by leading classification societies, its technologies are underpinned by a substantial return of experience over many decades. For many years, GTT has developed an active policy to provide technical assistance to LNG Carriers all over the world.



  • Freezing and transporting of food products
  • Cryopreservation of genetic/biological materials
  • Coolant for superconductors and other equipment
  • Cryotherapy in dermal applications
  • Shielding of materials from oxygen exposure
  • Quick freezing of pipes