Term
Fire
Describe the electric fire pump start/stop interlock. |
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Definition
-Auto starts at 70#.
-Auto stops when pressure is greater than normal (70-100) for 7.5 minutes. |
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Term
Fire
Describe the diesel fire pump starting interlock. |
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Definition
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Term
Fire
Describe the screen wash/fire pump start interlocks. |
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Definition
-Auto starts on screen high dP of 2" or 6".
-Auto transfer to fire header only at 70# for 10 seconds.
-Will shut the solenoid to screen wash and secure screens. |
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Term
Fire
Describe the power supply to the screen wash/fire pump. |
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Definition
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Term
Fire
Describe the power supply to the electric fire pump. |
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Definition
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Term
Fire
Describe the cable spreading room halon initiations. |
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Definition
-Auto actuation after 30second time delay when thermal detector reaches 140F.
-Manual immediate actuation at discharge station.
-Manual immediate actuation of pilot valve on halon cylinders.
-Manual initiation of switch at bottles after 30 second time delay. |
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Term
Fire
Describe the EDG/day tank rooms fire protection and other rooms that use fire protection. |
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Definition
-140F or 15F/min rise provides alarm.
-Fusible links melt at 160F.
-Also used in DG building, 13DG building, RW shipping building, TG/Exciter bearings.
-Intake structure melts at 165F. |
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Term
Fire
Describe pre-action sprinkler systems. |
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Definition
-Used to minimize false actuation and limit water spray.
-Heat detector sends signal to control panel which causes an alarm in the control room.
-Energizes the local alarm, and opens sprinkler valve which fills piping w/water.
-No flow until sprinkler head is fused. |
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