Question 758 Deck Safety

The correct answer is A) pressure from the control cylinders is detected. CO2 cylinders with pressure-actuated discharge heads are designed to automatically discharge when the pressure from the control cylinders is detected. This is a safety feature that ensures the system will activate and release the CO2 when the necessary pressure is present, even if the discharge valve is not manually opened or the control box glass is not broken. The other options are incorrect because: B) the control cylinders being fully discharged is not the trigger for automatic discharge, C) the discharge valve being open is not the trigger, and D) breaking the control box glass is not required for the automatic discharge to occur.