Tankers that are in service carrying "sour crudes" are faced with additional problems for their safe operation. One such problem is called "polyphoric oxidation" and results in ________.

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particles of rust in the tanks reaching a high temperature during "gas free" operations.

Answer

additional time for tank cleaning.

Answer

a second scrubber, known as an alkaline scrubber, to be added in series to the "normal" scrubber.

Answer

a lighter grade of crude being needed for tank washing.

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