Question 92Safety & Environmental - Assistant Engineer70% to pass
Pressure-vacuum relief valves, as used on tank vessels, are usually set to operate at two points, _______________.
AI Explanation
The correct answer is C) 14.2 psia; 2 psig.
Pressure-vacuum relief valves on tank vessels are typically set to operate at two specific points: 14.2 psia (pounds per square inch absolute) and 2 psig (pounds per square inch gauge). This is in accordance with the U.S. Coast Guard regulations for pressure-vacuum relief valves on tank vessels.
The other options are incorrect because: A) pressure-vacuum relief valves are not set to operate below atmospheric pressure, B) they are set to operate above and below atmospheric pressure, and D) the specified settings of 26 inches of vacuum and 5 psig do not match the standard regulatory requirements.
Related Questions
#90 Victual waste is _______________.#91 The amount of garbage disposed must be entered into the records maintained by each ship and stated in _______________.#93 Pressure-vacuum relief valves on tank vessel cargo tanks should be kept in good working order to prevent _______________.#94 Which of the following pressures represents the normal pressure setting of a pressure- vacuum relief valve as normally found on tank vessels? #95 To prevent oil from escaping into the sea when ballasting through the cargo piping system, you should FIRST _______________.