The Ultimate Guide to Cargo Operations for Tankers

After successfully testing the strength of the cargo tank, the results must be entered with date, time and location in the ship's logbook. Strength Testing Using Ballast Water This method is used depending upon the operation of the ship and its stability. Use of ballast water is acceptable to carryout combined strength and tightness testing, provided all the requirements stated in the SMS or cargo tank testing procedure of the ship are satisfied. After filling the ballast water, the boundaries and associated welds between the tank under test and the adjacent cargo oil tanks are to be thoroughly inspected to ensure there is no indication of water leakage.
173. l Marine Insight The surveyor can accept the strength test performed by ship's crew under following conditions
• The complete tank testing procedure should contain the data specifying fill heights, tanks being filled, and boundaries being tested. The procedure has been reviewed by the administration or regulatory authority
• The final tank testing report does not contain any record of leakage, distortion or substantial corrosion that would affect the structural integrity of the tank
• The tank testing has been satisfactorily carried out within the renewal survey window
• The tank testing results are recorded in designated paperwork and also in the ships logbook Cargo Operations for Tanker I 174.

• Foam solution
• Foam pump
• Fire pumps
• The internal and external condition of the tank boundaries and associated structure are found satisfactory by the surveyor at the time of the overall and closeup survey The fixed foam firefighting system is the most common type of system used onboard oil tankers for the protection of deck area of the cargo oil tanks. The Fixed foam system comprises of the following components
• Foam supply line
• Foam monitoring system
• Foam isolation valves
175. l Marine Insight

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