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Part IV
Additional Requirements for Bulk Chemical Cargo Tanks
Scope
21. (1) This section describes the conditions required before making repairs in spaces that have carried, or have been exposed to, chemicals in bulk; the remaining spaces shall comply with the applicable provisions in sections 12 through 15.
Minimum Requirements
22. (1) All minimum requirements for issuance of the marine chemist's certificate set forth in PART II apply to spaces that have carried, or have been exposed to, chemicals in bulk.
(2) The designation "Not Safe for Workers" shall be used for spaces that have carried material that could create unknown chemical hazards (see subsection 9(3)).
(3) Results of any chemical hazard tests may be noted on the marine chemist's certificate.
Minimum Conditions
23. (1) Minimum conditions to be met before issuance of a marine chemist's certificate for spaces that have contained chemicals in bulk shall be as in sections 17 through 20 (insofar as they are applicable) and as specified in this section.
(2) All pipelines, including heating coils, fire-extinguishing systems and vents, together with the cargo pumps and cargo lines serving the chemical-carrying spaces, shall be initially dealt with to the satisfaction of the marine chemist; methods and materials used for cleaning or inerting shall be selected carefully to avoid noncompatibility with previous cargoes.
(3) Compartments that carried chemicals in bulk shall be cleaned so that the atmosphere is as specified in subsections 7(1) and 7(3), as applicable.
(4) The residues in these compartments concerned shall be as specified in subsections 7(1) and 7(3), as applicable.
