Question 1113Deck General70% to pass
On tankers ullages are measured from what point?
AI Explanation
The correct answer is A) an above-deck datum such as the top of the ullage pipe.
Ullage refers to the empty space in a tank, and on tankers, ullages are measured from an above-deck datum, typically the top of the ullage pipe. This is the standard practice specified in regulations and industry standards for taking accurate ullage measurements on tankers.
The other options are incorrect because: B) the tank ceiling is not the standard reference point, C) the tank top is too low to serve as the reference, and D) a thievage mark below the deck edge is not the typical measurement point used.
Related Questions
#1111 Deck foam systems, designed to protect cargo areas on tank vessels built after January 1, 1975, must have a supply of foam-producing material to operate the system at its designed rate of foam production for _______________.#1112 How does an inert gas system on a tanker function to prevent explosions in cargo tanks? #1114 Cargo tanks on barges fitted with goose neck vents and flame screens are limited to carrying which grade of cargo? #1115 How does an inert gas system on a tanker function to prevent explosions in cargo tanks? #1116 A tank barge equipped with an internal-combustion engine-driven cargo pump on the weather deck shall be provided with a minimum of one remote manual shutdown station. What is the correct location of the shutdown station?