Question 56Safety & Environmental - Assistant Engineer

The correct answer is B) Sewage compartment bilges where leaked sewage has accumulated. Hydrogen sulfide gas is a byproduct of the anaerobic decomposition of organic matter containing sulfur, such as sewage. This gas is most likely to be found in areas where sewage has accumulated, such as the bilges of the sewage compartment. The other options do not involve the decomposition of organic matter that would produce high concentrations of hydrogen sulfide. The other answer choices are incorrect because: A) Hydrazine is a fuel, not a byproduct of decomposition; C) Chemical cleaners and solvents would not produce hydrogen sulfide; and D) Discharge gases from emergency batteries would not contain hydrogen sulfide.