Class 2 (2nd Engineer) MEKG 📅 Aug 2024

Exam Question

With reference to chemical tankers:

(a) Sketch a suitable cargo pumping and stripping system, labelling the component parts and indicating the direction of fluid flow. (10)

(b) State the requirements of the regulations evolved to reduce pollution of the sea by chemical tanker cargoes. (6)

Reference Answer

### (a) Chemical Tanker Cargo Pumping and Stripping System (10 Marks)
#### Concept and System Selection
For chemical tankers, the primary considerations for cargo handling are safety, prevention of cross-contamination between different cargo parcels, and minimizing cargo residues to comply with stringent environmental regulations (MARPOL Annex II). The most common and effective system that meets these requirements is the **submerged deepwell pump system**, with one dedicated pump per cargo tank.
This design offers complete segregation of cargo, eliminating the need for a traditional pump room and complex piping within the tanks, which significantly reduces operational risks and cleaning times.

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