The IMO carries out a final assessment of the products on the basis of their physical and toxicological characteristics provided by the producing country. The product is then valid for all countries without an expiry date and is included in the standard product list of the fitness certificate (CoF). The conditions of carriage may be modified on the basis of the tripartite agreement. When new chemicals or mixtures of products are offered for bulk shipment, they are usually subject to a tripartite agreement. The objective of a tripartite agreement is that a new product can be shipped relatively quickly during a transitional period before the IMO carries out the final assessment. At the next opportunity, the operator should urgently consider requesting a tripartite list instead of a supplement in order to have the vessel certified for all products currently available. This information is ready to provide chemical tanker owners and stakeholders with detailed explanations of the tripartite agreements for each list contained in the circular, given that many requests have been made recently by shipowners. The new list shows the signatory states and tripartite expiry dates for each product, in addition to standard information such as the tanks in which the product can be transported, footnotes and the MARPOL pollution category. 2.1 Since chemical manufacturers continuously produce new products that are not yet included in the IBC code, the products are evaluated and classified by the government of the country producing, importing or shipping for the transport of chemicals on board tankers. In the event that it is proposed to transport in bulk a liquid substance that has not been included in the Code, the Governments of the Parties to the Convention participating in the proposed project shall prepare a preliminary assessment of the proposed project on the basis of the provisions of MARPOL Annex II/Reg. 6.2 the above-mentioned guidelines shall adopt them and notify them to the IMO.
If the tripartite agreements have been notified to the IMO, the agreements for the valorization of the products (or trade names) are issued in the form of a circular MEPC.2. . . . .