For a well designed and operated flue gas system experience
suggests that petroleum cargoes traditionally carried on product tankers
do not suffer contamination from the flue gas itself, as opposed to
contamination from other cargoes. However, unacceptable contamination
from the flue gas may be encountered if proper control is not exercised
over fuel quality, efficiency of combustion, scrubbing and filtering.
The more critical petrochemical cargoes which may be carried
by product carriers can be contaminated by flue gas.