Fire Protection Flashcards
What are the Fire Pump Auto Starts?
Motor Driven Fire Pump - 140# for ≥ 2 Sec
East Diesel FW pump - 130# for ≥ 15 secs
West Diesel FW Pump - 120# for ≥ 25 secs
What is the Diesel Fire Pump Trip?
Engine overspeed @ 2112 RPM
For any given fire, what are the most fire pumps you should expect to see running?
2 Pumps max for a Main Transformer Fire
- Electric FW Pump and East Diesel FW Pump
What is the normal power supply to the fire pump house?
Transformer 7 - Norm
Livingston Rd - Alternate
Can you parallel the two supply power sources to the fire pump house?
No, you cannot parallel them due to the two sources being out of phase
Which unit can manually open ZMO-10 and ZMO-20?
Either unit has the ability to open ZMO-10 and ZMO-20
Which unit is required to manually close ZMO-10 and ZMO-20?
Both units are required to close ZMO-10/20 after them being open
What is the TRM limit for gallons in the Fire Water Tanks?
2 Fire Water Tanks with a min of 565,000gal each
What is the TRM for the Diesel FW Pump Fuel oil tanks?
160 gal each for an 8hr operation
Which fans will trip on high temp (400°F) on thermistor string?
AFX
CPR
CIPX
TSC Filtration Unit
At what temp does the pre-alarm for the fans with the charcoal bed come in?
150°F-220°F
Which fans have charcoal filter fire water protection?
AFX - Spent Fuel Exhaust CPR - Containment Pressure Relief CIPX - Instrument Room Purge Exhaust TSC Filtration AES - Engineered Safety Features ACRF/CRP - Control Room Pressurization SATFU - SAT Room
ZMO-10/20 will auto open upon receipt of any of the following fire signals from these areas
- Drumming area
- New fuel receiving area
- Any charcoal filter supplied by fire water system
- Push button for Auxiliary building hose reels
Will general aux building elevation area fire detectors open ZMO-10/20?
No they will not open ZMO-10/20. They just send an alarm.
What TRO 8.7.5 require?
- 3 pumps with 2500gpm capability
- 2 fire water tanks, each with a minimum usable volume of 565,000 gallons
- Intact system
What TRO 8.7.6 A State?
One or more Sprinkler Systems inoperable in areas WITH fire detection
WITHIN 1 hr:
- Verify fire detection instrumentation (electric or pneumatic) for the affected area is OPERABLE.
AND
- Verify that Monitoring Program Action Levels have not been exceeded
What TRO 8.7.6 B State?
One or more Sprinkler Systems inoperable in areas WITHOUT fire detection
WITHIN 1 hr:
- Patrol the affected area with a fire watch.
- Verify that Monitoring Program Action Levels have not been exceeded.
What TRO 8.7.6 C State?
Required Action and associated Completion Time of Condition A or Condition B is not met
WITHIN 1 hr:
- Establish a continuous fire watch patrol of affected area.
What area do each of the CO2 Tanks Protect?
71/2 Ton - Old Office Building and Generator Degas 17 Ton Areas: - 4KV Room - EDG Rooms - EDG Fuel Oil Pump Room - Aux Cable Vault - CRCV - Switchgear room cable vault - Quads 1-4 - MT Lube Oil Tank Rooms - Lube Oil Tank Rooms - CRD room - Hose Reels
How does the CO2 Master Valve fail on loss of 250V DC?
Fails open (Pilot denergizes)
How does the CO2 Pilot Valve fail on loss of 250V DC?
Fails open
How does the CO2 Master Valve fail on loss of pilot pressure?
Fails closed
With a fire in the U2 CRCV, what automatically actuates for fire protection?
Halon and Fire Water Sprinkler
With a fire in the U1 CRCV, what automatically actuates for fire protection?
Halon only
What must you manually actuate for a CRCV fire to both units?
CO2
Is Turbine lagging fire protection automatic?
No, fire has to be locally verified and manually actuated from control room (ZRV-40/41)
If Halon is actuated at the cylinder manually, will the extended Halon bottles actuate?
No, they will not
If a Diesel fire pump won’t start on the first try, what happens next?
- it will keep trying to start, and Engine locks out if it doesn’t start within 6 cranking cycles. (15-sec ea)
What is the purpose of the INDIVIDUAL ISOLATION SWITCH?
Prevents all auto actuations of CO2 to a protected area
What happens on a temp Pre-alarm in the charcoal bed?
CR gets an alarm and procedure directs opening of FP Isolation vlv
How does the CO2 Selector Valve fail on loss of power?
Fails closed
What is the capacity and of the pegging pump and at what pressure does it keep the header
50 GPM
150 psi
How many fire water storage tanks are in service at a time
One
How long do the charcoal filter deluge valves actuate for
They ever cycle 20-30 seconds
What is the minimum pressure on the 17 Ton CO2 Tank
285 psig
What do the CO2 Master Valves do
Sends CO2 to various area selector valves
What do the CO2 Pilot Valves do
Provide pilot pressure to the master valves on CO2 system activation
Are CO2 Pilot Valves normally energized or de-energized
Energized
What do CO2 Selector Valves do
Admit CO2 to its area on a fire signal
Are CO2 Selector Valves normally energized or de-energized
Normally de-energized
What are actuation methods for Halon
Automatic
Manual-Electric (Control Room pushbutton)
Manual - At Automan (Pull Pin-Push button)
Manual - At Halon Cylinders (Pneumatic Actuator)
How many extended Halon discharge cylinders are there
Three
How long after the main Halon discharge do the extended Halon discharge cylinders actuate
3 minutes 45 seconds
How long does the main Halon discharge last
45 seconds
How long does extended Halon discharge last
4 minutes
