PUMPING CARGO PART 1

Code No: 501

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This is part of a series of five videos that uses computer graphic techniques with animated sequences to produce concise, visually effective and informative training material. A full voice commentary describes and reinforces the highly detailed visual images.

The videos take as an example a 170,000 dwt segregated ballast tanker (no double bottom) with 7 cargo tanks, 2 slop tanks and 3 cargo pumps. The capacity of the cargo pumps is 4000 m3/hour.

Part 1 - The vessel arrives at the discharge port and the video begins by explaining the operation of the cargo pumps. The explanation starts with basics to describe the principles of operation, discussing in particular the pressures on the suction and discharge side of the pump at rest and whilst running. The video shows how the pressure changes during the discharge due to friction, explanations of the pump’s H/Q curves, how to calculate head and hence discharge rate. Starting the first pump is demonstrated showing all precautions and then bringing in all three to achieve maximum discharge rate.