1 Category A
Clasification Society 2024 - Version 9.40
Statutory Documents - IMO Publications and Documents - Guidelines - Guidelines for the Provisional Assessment of Liquids Transported in BulkMEPC/Circular.265 - Annex 4 Interpretation of the Guidelines for the categorization of noxious liquid substances (MARPOL 73/78, Annex II, appendix I) - 1 Category A

1 Category A

 The expression at the end of this paragraph "when particular weight is given to additional factors in the hazard profile or to special characteristics of the substance", implies either that:

  • .1 substances are bioaccumulated and liable to produce tainting of seafood (as expressed by a hazard rating T in column A); or

  • .2 substances are bioaccumulated with attendant risk to aquatic organisms or human health, however, with short retention of the order of one week or less (as expressed by a hazard rating Z in column A) and are highly objectionable with regard to the reduction of amenities (as expressed by a hazard rating XXX in column E).


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