DNV Awards AIP for LNG Fuel Tank Insulation to PASSER Marine
DNV has granted an Approval In Principle to PASSER Marine for the development of a new LNG fuel tank insulation system. The new concept is designed for prismatic ‘type B’ LNG tanks, which according to IMO rules require a partial secondary barrier - and includes a leakage detection system capable of safely managing and containing fuel leaks.
As LNG fueled vessels are increasingly being deployed for deep-sea shipping, fuel tank sizes need to increase from 300-1000 cubic meter fuel capacity to up to 10,000-20,000 cubic meter which leaves less room for cargo. As such, there is increased industry interest in alternative fuel tanks, known as ‘type B’, which are prismatic in shape and more volume efficient than traditional cylindrical ‘type C’ tanks. Between 95 and 99% of LNG fueled ships contain type C fuel tanks, but many newbuilds on order contain ‘type B’ specifications.
AIP is widely recognized in the industry as an early phase verification level for new design concepts or for existing designs in new applications. An AIP issued by DNV is an independent assessment of a concept according to an agreed requirement framework within DNV Rules, notations and regulations for which DNV is authorized to carry out third part verification, confirming that a design is feasible and that no major obstacles would prevent the concept from being realized.