Section 9: Procedures for Changing From Product Trade to Crude Oil Trade footnote
Clasification Society 2024 - Version 9.40
Statutory Documents - IMO Publications and Documents - Specifications and Manuals - Dedicated Clean Ballast Tanks - Annex 2 - Standard Format For The Dedicated Clean Ballast Tank Operation Manual - Appendix 2 - Specimen Manual for a Tanker Operating with Dedicated Clean Ballast Tanks - Section 9: Procedures for Changing From Product Trade to Crude Oil Trade1

Section 9: Procedures for Changing From Product Trade to Crude Oil Trade footnote

  9.1 An existing oil tanker operating with dedicated clean ballast tanks in the product trade, that is also equipped with both a COW system for the crude oil trade and separate independent pump and piping arrangements for ballasting the dedicated clean ballast tanks, may change from the product trade to the crude oil trade without undergoing a survey. When making this change from the product trade operating with dedicated clean ballast tanks to the crude oil trade operating with a COW system, the following procedures shall be followed:

  • .1 After discharge of the product cargo, the dedicated clean ballast tanks should be ballasted through the separate independent pump and piping arrangements in accordance with the procedures contained in section 4 of this Manual.

  • .2 During the ballast voyage, a visual inspection of the surface of the CBT ballast is to be made at regular intervals to ensure there is no oil contamination.

  • .3 When arriving at the loading port, CBT ballast should be discharged through the separate independent pump and piping arrangements in accordance with the procedures contained in section 4 of this Manual. If there is an indication that the CBT ballast has been contaminated with oil, all discharges from the tank should be made through the cargo piping connexion to the tank, and not the separate independent ballast piping.

  • .4 After CBT ballast has been discharged and prior to loading the crude oil cargo, all the valves in the separate independent piping system for ballasting the dedicated clean ballast tanks should be closed and secured.

  • .5 Crude oil cargo can then be loaded in all the tanks, including those that have been designated as dedicated clean ballast tanks when the vessel is operating in the product trade .

  • .6 The vessel should now operate as a crude oil tanker equipped with a COW system and the COW Operations and Equipment Manual should be used while the vessel is operating in this trade.

Parent topic: Appendix 2 - Specimen Manual for a Tanker Operating with Dedicated Clean Ballast Tanks
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