Question 214Safety & Environmental - QMED70% to pass
What would be the most probable cause for a high-pressure alarm to be activated in a low-pressure CO2 fixed fire extinguishing system?
AI Explanation
The correct answer is C) The tank cooling system has malfunctioned.
In a low-pressure CO2 fixed fire extinguishing system, the CO2 tank is kept at a low pressure, typically around 300-500 psi. This low pressure is maintained by a tank cooling system that keeps the tank at the proper temperature. If the tank cooling system malfunctions, the temperature of the CO2 in the tank will rise, causing the pressure to increase. This increase in pressure would trigger the high-pressure alarm.
The other answer choices are incorrect because: A) Excessive insulation would not cause a high-pressure alarm, it would just make the tank harder to cool. B) An air leak would cause a low-pressure alarm, not a high-pressure alarm. D) A leaking pilot cylinder discharge valve would not directly affect the pressure in the main CO2 tank.
Related Questions
#212 When fighting a machinery space fire, you should operate a fixed CO2 system by opening the control valve to the space protected and _______________.#213 The source of power for the CO2 discharge alarm siren is obtained from _______________.#215 When a ship's low-pressure CO2 fixed fire extinguishing system is activated from a remote location, what determines the quantity of CO2 that will be released into the selected compartment? #216 Why is it essential to introduce CO2 from a fixed fire extinguishing system, into a large engine room, as quickly as possible? #217 When re-entering an engine room that has been flooded with CO2, the investigating team should initially _______________.