Question 59Safety & Environmental - Assistant Engineer

The correct answer is C) Safe for men - Not Safe for Fire. The reasoning is that the compartment has been tested and found to contain 20.8% oxygen by volume, which is within the permissible range for human occupancy, and the toxic and flammable gas concentrations are within safe limits. However, the presence of flammable gas just below the lower flammable limit indicates that the compartment is not safe for fire or hot work, as a small ignition source could cause the flammable gas to ignite. The other options are incorrect because option A) would indicate that the compartment is safe for both men and fire, which is not the case, and options B) and D) would indicate that the compartment is not safe for men, which is not supported by the given information.