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Statutory Documents - IMO Publications and Documents - Guidelines - Guidelines for the Provisional Assessment of Liquids Transported in BulkMEPC/Circular.265 - Section 4 Provisional assessment of pure or technically pure chemicals
Section 4 Provisional assessment of pure or technically pure chemicals
4.1 In case of pure or technically pure chemicals, the Administration of the shipping or producing country will provisionally assess the pollution category, the ship type and the carriage requirements, on the basis of the pollution and safety data supplied by the manufacturer/shipper.
4.2 The following reference documents provide guidance for the Administration to assess the new chemical's pollution hazard:
4.3 The first step for the Administration is to check the latest composite list of hazard profiles of substances carried by ship, issued periodically by IMO under cover of a BCH circular.
4.4 If a hazard profile can be found for the chemical in question, its pollution category should be derived from it in accordance with references 4.2.1 and 4.2.2. The ship type and carriage requirements, in so far as the pollution hazard is concerned, should be derived from reference 4.2.5.
4.5 If no hazard profile exists, all the available data to establish one should be reviewed.
4.6 When adequate data are available, a provisional hazard profile should be derived, following the criteria developed by GESAMP (see reference 4.2.3). The pollution category should be derived from this provisional hazard profile in accordance with 4.2.1 and 4.2.2. The ship type and carriage requirements, based upon its pollution hazard, should be derived in accordance with 4.2.5.
4.7 When sufficient data are not available, the Administration should make an assessment by assimilation to chemically similar substances from the following sources:
When several alternative assimilations are possible, the most severe should prevail.
4.8 After assessment of pollution hazards, the possible safety hazards of the chemical should be assessed.
4.9 Guidelines for the assessment of the possible safety hazards of chemicals are provided in "Part A - Safety hazards" of the Criteria for Hazard Evaluation of Bulk Chemicals, attached to the IBC Code.
4.10 If the chemical to be provisionally assessed presents a safety hazard, the Administration should assign carriage requirements in accordance with the above-mentioned Criteria. These requirements have to be integrated with those previously assigned for pollution prevention purposes only and the most stringent set has to be adopted. If necessary, the Administration should revise the ship type previously assigned for pollution considerations only.
4.11 At this point, the Administration of the shipping or producing country, having provisionally assessed the chemical in question, should seek the concurrence of the Administrations of the flag States and receiving countries with its evaluation. For this purpose, the standard telex/telefax format for proposing tripartite agreements for the provisional assessment of liquid substances, reproduced in annex 7, should be used.
4.12 After express or tacit agreement has been reached, the proposing Administration should inform IMO, as required by regulation 3(4) (now regulation 6.3) of Annex II. It is recommended to use the telex/telefax format for this purpose, adding the list of the countries involved.
4.13 Either the proposing Administration or the manufacturer should then promptly forward to GESAMP all data necessary for a formal hazard evaluation, using the format "Characteristics of liquid chemicals proposed for marine transport in bulk" (see annex 8).