FIRST IN THE WORLD WITH GASA CERTIFICATION FROM DNV FOR COMPLETE SPRAY FOAM INSULATION SYSTEMS INCLUDING SECONDARY BARRIER ON LNG B-TANK

Taking the LNG Containment market to a new level with the GASA certification from DNV.  AIP is also received from LR, and GAPP under processing.

PASSER Marine and PASSER Lanyu, both companies are part of PASSER Group, has together developed the world’s first cryogenic spray foam insulation system for Type-B tanks.

The two companies together are already one the world’s largest provider of tank insulation for traditional C-tanks. With more than 30 patents and insulation systems available for A-tank, B-tank (prismatic & Moss), C-tank and insulated cryogenic piping, PASSER Marine and PASSER Lanyu are complete suppliers of cryogenic insulation and offers full EPCI contracts to clients

IMO has earlier defined the Type-B tank as a non-pressurized tank with a partial secondary barrier. This definition has now been challenged by us!

The Type-B design employs internal bulkheads, giving it superior anti-sloshing characteristics. Compared to IMO Type-C pressurized tanks, the Type-B have a greater volume efficiency (typical 20-40%) because of geometry.

The prismatic shape makes this type of tank an excellent choice when available cargo or deck space matter. From smaller fishing vessels to larger container vessel.

Shipowners will get an increased flexibility and a completely new opportunity when evaluating tank technologies for new builds, and a superb solution to implement in retrofits.

 Boil-off management by re-liquefaction, sub-cooling or thermal oxidation requires energy. With full flexibility on insulation thickness, shipowners can lower the boil-off rate to a minimum and reduce the overall power consumption. With reduced consumption comes environmental and economical savings.

With an Approval in Principle from DNV and LR in spring 2021, the development work has continued and been taken to a whole new level.

PASSER Marine and PASSER Lanyu has together developed an insulation system for installation directly on tank skin. Spray foam (PUF) with in-build crack barriers, a dedicated mesh-system for gas detection and an outer layer of the patented “Tough Coat” acting as secondary barrier.

The PASSER Group companies have gone beyond the basic safety aspects for this kind of containment system, required by IMO. A liquid tight full secondary barrier on a B-tank with a unique Gas detection system, will give the operator full control of tank and hold-space condition. Alarms and actions will be applicable when detecting

By having a secondary barrier directly onto insulation and consequently directly onto the B-tank, everything can be prefabricated in parallel with other operations to shorten the overall installation time significantly.

The unique gas detection system consists of a mesh grid surrounding the entire tank. Creating gas paths for a continuous flow of inert gas, and for evacuation of hydrocarbon (HC) gases. Together with HC-detectors, potential gas leaks can easily be detected and handled before any flammable gas enters cargo hold-space. Larger potential leaks to be drained into drip-tray (partial secondary barrier). According to IMO, the partial secondary barrier needs to be in place, but with PASSER Marine’s groundbreaking solution, the safety management has been moved to a higher level.

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