Question 1066 Deck General

70% to pass

Tankers that are in service carrying "sour crudes" are faced with additional problems for their safe operation. One such problem is called "polyphoric oxidation" what does this result in?

A particles of rust in the tanks reaching a high temperature during "gas free" operations.
B a lighter grade of crude being needed for tank washing.
C additional time for tank cleaning.
D a second scrubber, known as an alkaline scrubber, to be added in series to the "normal" scrubber.
AI Explanation

The correct answer is A) particles of rust in the tanks reaching a high temperature during "gas free" operations. Sour crudes, which contain higher levels of sulfur compounds, can lead to a phenomenon called "polyphoric oxidation" where the sulfur compounds react with rust particles in the tanks. This can cause the rust particles to heat up to high temperatures during gas-freeing operations, potentially leading to hazardous situations. The other options are incorrect as they do not directly address the issue of high-temperature rust particles, which is the key problem associated with polyphoric oxidation in sour crude tankers.

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