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GTT Global Testing

Global Test is a specialized non-destructive test (NDT) designed to evaluate the integrity of the primary and secondary barriers of membrane containment systems.

BNF is proud to be one of the 10 companies in the world approved by Gaztransport & Technigaz (GTT) for the provision of SBTT / Global Testing services to LNG Carriers in service.

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