2 General operational checklists (section 5 of Manual)
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 1 - General Guidelines for Operation Procedures and Checklists for the Purpose of Sections 4 to 8 of the Dedicated Clean Ballast Tank Operation Manual - 2 General operational checklists (section 5 of Manual)

2 General operational checklists (section 5 of Manual)

 The following checklists apply generally to all CBT tankers. However, when the checklists for a specific tanker are prepared, they should be expanded to include any other steps of relevance and be completed with appropriate identification of pumps, valves, etc.

Parent topic: Appendix 1 - General Guidelines for Operation Procedures and Checklists for the Purpose of Sections 4 to 8 of the Dedicated Clean Ballast Tank Operation Manual

2.1 Prior to arrival at the loading port

  No. Item

  (1) Have all remaining slops been transferred to a cargo tank?

  (2) If simultaneous discharge of clean ballast while loading is intended, have the pumps and piping designated for clean ballast operation been properly cleaned?

  (3) Have all valves to the slop tank and the cargo tanks been closed?

  (4) Has a visual inspection of all clean ballast tanks and their contents been made for signs of contamination?

  (5) Has a sufficient amount of clean ballast water been discharged to ensure that the remaining ballast water and cargo to be loaded will not exceed the permissible deadweight or draught? (A sufficient amount of water should be left for flushing the piping, and as a minimum, a quantity equal to ten times the volume of the affected piping should be left.)

  (6) Have all valves to the clean ballast tanks been closed?

  (7) If no further ballast discharge is anticipated, has the clean ballast piping been drained?

2.2 In the loading port

  No. Item

  (1) Is sufficient ullage in the slop tank available for the subsequent reception of cargo pump and pipe flushings which will be required after loading cargo?

  (2) When applicable, has remaining clean ballast been discharged before the entire piping system is used for loading and has the required minimum quantity of flushing water been left in the clean ballast tanks?

  (3) Have all valves to the clean ballast tanks been closed?

  (4) Have all valves to the cargo tanks been closed upon completion of loading?

Note Item (1) does not apply if flushing water is provided overdeck, i.e. by piping other than ships cargo piping.

2.3 Prior to departure from the loading port

  No. Item

  (1) Have the appropriate pumps and piping been flushed into a slop tank with sufficient water from clean ballast tanks?

  (2) Have valves to the slop tank been closed before pumping the remaining clean water overboard and has the discharge been monitored, either visually or by a content meter?

  (3) Have all valves in the clean ballast tanks been closed?

Note Item (1) does not apply if flushing water is provided overdeck, i.e. by piping other than ships cargo piping.

2.4 Prior to arrival at the final discharge port

  No. Item

  (1) Have all valves to the slop tank and the cargo tanks been closed?

  (2) Have the pumps and piping designated for clean ballast operation been properly cleaned?

  (3) Has the required amount of flushing water been taken into the ballast tanks?

  (4) Have all valves in the clean ballast tanks been closed after any necessary ballasting?

Note Item (2) does not apply if flushing water is provided overdeck, i.e. by piping other than ships cargo piping.

2.5 In the final discharge port

  No. Item

  (1) Have the necessary pumps and piping intended for clean ballast operation been prepared?

  (2) When draught conditions permit, has ballasting been completed to departure conditions?

  (3) Have all valves to the clean ballast tanks been closed?

  (4) Has unloading of cargo been completed?

2.6 After departure from the final discharge port

  No. Item

  (1) Have pumps and piping serving the clean ballast tanks been flushed into the slop tank?

  (2) Have clean ballast tanks been topped up as required?

  (3) Has the slop tank content been processed in accordance with LOT procedures?

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