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Fiberglass-Reinforced Tank Lining Applied in Chemical Tankers

Turkey-based KS Shipping is lining five newbuild chemical tankers with a fiberglass-reinforced polymer system designed to withstand a wide range of severe chemical exposures as well as protect ships against basic mechanical damage, according to Advanced Polymer Coatings (APC), the U.S.-based provider of the lining selected. The system KS Shipping required would allow its ships to carry the most types of cargo possible, the manufactuer added.

The Fionia Swan (formerly the M/T Puli)
Coating applied to the tank top.

For the fleet of five 15,300 dwt ships, key engineering specifications require that the tanks be able to carry acids with a specific gravity of up to 1.9 and meet all IMO ll specifications. Another key specification is that a barrier be installed in order to prevent mechanical damage to the tank tops. Each ship has 18 cargo tanks and two slop tanks.
APC’s fiberglass-reinforced polymer system, called MarineLine®, was chosen as the coating because of its lengthy track record in the chemical tanker industry and for its versatility in handling the International Bulk Code (IBC) cargo range, according to APC. To fulfil the need for the mechanical barrier, a fiberglass-reinforced matting system was developed to cover and protect the tank tops and bulkheads. The fiberglass-reinforced lining measures approximately 95-130 mm thick, providing high tolerance to mechanical damage –more than 10 times greater impact resistance than the coating alone, according to APC.

All the newbuilds were constructed and coated in Turkey. On the first ship constructed, the M/T Puli, the tank lining system began with a MarineLine® coating applied in two spray coats to the deckhead and bulkheads. A base coating was then applied to the tank tops. This area was in turn wetted out with fiberglass rolled into the resin. Next, the fiberglass-reinforced surface was smoothly sanded before a final coating of MarineLine® was applied. The entire tanks were then heat cured to ensure the coating work was complete and ready for service.

The first of these advanced tankers, the M/T Puli is already in service. The ship was recently purchased from KS Shipping by UNI TANKERS of Denmark and renamed the Fionia Swan. The second ship, the M/T Puli I, has also been completed with the MarineLine® coating and lining system. This ship, which has been sold to the Netherlands-based company Lauranne Shipping, is scheduled for delivery this fall. Construction of the M/T Puli II is in progress now at Cicek, and the final two ships in the series will be scheduled for completion thereafter.

As IMO-II approved chemical tankers, these vessels have ‘Clean Sea’ notation and Bureau Veritas Ice Class 1A certification, so they can operate in the Baltic year round. They also are designed to carry the maximum number of different cargos, complying with the industry’s highest standards. The enhanced lining system provides good resistance to a wide range of ultra-aggressive agents, while the impregnated fiberglass lining delivers ongoing protection against mechanical damage, according to APC.