Approval for ballast tank coating system

05 Jan 2012

ClassNK has awarded type approval for what it believes to be the first alternative coating system under PSPC for ballast tanks to a single coating system manufactured by Nippon Paint Marine Coatings.

The Japanese class society says that this approval is the first to be issued by any classification society anywhere in the world. Under PSPC (performance standard for protective coatings), conventional epoxy coating systems are required to comprise two coatings. The standard does however include a provision which allows for alternative systems, such as the system now approved by ClassNK, with only a single coating. A key function of the system developed by Nippon Paint Marine Coatings is said to be the SI (self-indicating) feature whereby the color of the coating changes depending on its thickness. The application of this coating system to ships will begin upon confirmation from relevant administrations by ClassNK.

The PSPC standard provides technical requirements for protective coatings in dedicated seawater ballast tanks of all type of ships of not less than 500gt and double-side skin spaces arranged in bulk carriers of 150m in length and upwards for which the building contract is placed, the keels of which are laid or which are delivered on or after the dates referred to in SOLAS regulation Ⅱ-1/3-2 as adopted by resolution MSC216(82).

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