A cleaning additive may be used for the cleaning of cargo
tanks and associated piping systems on ships certified to carry Noxious
Liquid Substances in bulk. It is used by adding it to the washwater
in small amounts. Such cleaning additives are listed in annex 10 of
the MEPC.2/Circular.
Cleaning agents referred to in regulation 13.5.1 of MARPOL Annex II fall outside the scope of
these guidelines and their data should not be submitted for evaluation.
The use of cleaning additives is recorded in the Cargo Record
Book as stated in Appendix 2 to MARPOL Annex
II, “List of items to be recorded”.
Tank cleaning additives are evaluated by the Sub-Committee
on Bulk Liquids and Gases (BLG) in order to protect the marine environment
from adverse effects related to their use.
It is not the intention of the evaluation to determine the
efficacy of the cleaning additives, but solely to determine their
environmental acceptability by establishing whether the additives
concerned meet the requirements of regulation 13.5.2 of MARPOL Annex II.
This document contains a guidance note and a form to facilitate
the submission of data by manufacturers through their Governments.