The Ultimate Guide to Cargo Operations for Tankers


Monitoring Parameters in CCR- Image Credit Sarthak Nayak



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Monitoring Parameters in CCR- Image Credit Sarthak Nayak

The Auto Unloading System (AUS) shall be correctly and effectively utilized to reduce the overall discharge time. Procedure for Starting Portable Framo Pump
• Connect the hydraulic manifolds provided in the hydraulic deck lines (They run forward to aft for providing hydraulic oil to the cargo pumps. Keep the inlet and return valves supplied near the hydraulic manifold closed
• Connect the flexible suction and discharge hoses to the portable Framo pump
• Rig the assembly over the tank hatch using a tripod, lower it slowly into the liquid and fix it firmly to the cargo pump. Vibration in the pump will increase the cavitation rate.
75. l Marine Insight
• Slowly open the inlet and return valves. Initially, keep the hydraulic system pressure low up to 60 bars
• As the pump starts running, check all hydraulic, suction and discharge hoses are capable of withstanding the operation Cargo Operations for Tanker I 76.
Operating Portable FRAMO Pump


• If all is confirmed in order slowly increase the system pressure as required
77. l Marine Insight Completion of Discharge
• Once the cargo operation is called complete from ship and shore side, the manifold gate valve is to be closed
• After the completion of a dry survey by the terminal, the hoses and arms connected to the manifolds are to be drained before disconnection Cargo Operations for Tanker I 78.
Portabkle FRAMO Pump piping
Manifold Valves

The Chief Officer should frequently check ship stability and hull stresses to ascertain that they are within permissible limits. These checks shall be constantly performed during ballasting/deballasting and upon cargo operation completion.
• Once the draining operation is finished, tank valves and vent valves are to be closed
• The duty officer must ensure that the connection is depressurized and isolated from the internal cargo tank IG pressure
79. l Marine Insight
• Deck watch must check the ullage and the quantity remaining in the tanks, from which, cargo has been unloaded
• After completion of the cargo operation, ullage ports, vapour locks and all other tank openings to be closed
• Care should betaken to ensure that cargo lines do not become over-pressurized due to high ambient temperatures Cargo Operations for Tanker I 80.

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