Fire Protection System Flashcards
What makes a fire barrier operable?
- Fire doors must either be closed or equipped with a self‑closing device.
- Fire dampers must either be closed or equipped with a self-closing device.
- All other fire barriers must be maintained in a functional condition.
- For sub-volume and exterior wall barriers to be functional:
- Doors must be closed and latched when not in use.
- All other sub-volume and exterior wall barriers must be maintained in a functional condition.
How do non-functional fire barriers get handled?
When a fire, sub-volume, and/or exterior wall barrier is non-functional the Shift Manager shall:
- Initiate appropriate compensatory measures in accordance with the barriers safety significance.
- High Safety significance
- Low Safety significance
- Non-NFPA 805
- Notify Security to initiate the required compensatory measures.
- Verify non-functional fire barrier has a Condition Report written.
- Review and sign the Fire Tour Cover Sheet prior to initiating or securing compensatory measures.
What is Defense in Depth?
- Fire Prevention
- Fire Detection
- Fire Containment
- Fire Suppression
Typically piping arrangement to the sprinklers and hose stations is such that no single failure would render both systems unavailable. Where is this not done?
One exception is the water supply to the Charging Pump Room sprinklers
Line break could cause loss of both the sprinklers and hose station
What is a fire barrier?
- Fire Doors
- Fire Dampers
- Fire Rated Assemblies: fire walls, ceilings, floors plugs, fire barrier penetration seals
- Fire Protection Assemblies: radiant heat shield between P-41 and P-9A/B
- Sub-Volume and Exterior Walls: walls, doors
What are the actions associated fire detection and or protection out of service within a High Safety Significant Area?
When a Fire Detection System in a HSS area is non-functional:
- IF automatic suppression is functional in the area, THEN implement an hourly fire tour within one hour.
- IF automatic suppression is non-functional, THEN implement a continuous fire tour within one hour.
If Door 167B, Scuttle Hatch From CCW Room to “West” ESG is open, what must be functional?
If in Mode 1, 2 and 3
Auxiliary Feedwater Pump P-8A shall be OPERABLE
What must be done if Door 167,CCW Room to 590 Corridor is blocked open?
Floor Plugs to be in place in Door 167 is Open
- East Engineered Safeguards
- West Engineered Safeguards
- Spent Fuel Pool (above East Engineered Safeguards Floor plugs)
What are the type of fire dectors utilized here?
- Ionization Detectors
- Photoelectric Detectors
- Ultraviolet Detectors
If the required fire protection equipment is non-functional (i.e., required fire fighting equipment missing or defective) what must be done?
The non-functional fire protection equipment shall be replaced within one (1) hour OR
Additional fire hose capable of reaching the unprotected area shall be provided within one (1) hour at an functional fire hose reel station, fire hose rack, or fire hydrant hose house.
What are the effects of water spray on electrical equipment?
To prevent potential of electrical shock maintain maximum distance while still maintaining spray on fire
All nozzles used within the plant (with the exception of hydrant houses) are electrically safe fog type nozzles
Nozzles are pinned to prevent opening beyond the 30° position thus maintaining fog spray
What is the output and pressure of the fire pumps?
- Three 100% capacity, 3-stage Vertical Turbine Pumps rated at 1500 gpm at 125 psig (each)
- Capable of providing 2250 gpm at 81 psig. 150% of output at 65% pressure.
What is P-9A power supply and its automatic starting pressure?
Power Supply – Bus-13, Bkr 52-1305
PS-1311 starts pump at 98 psig fire main pressure
Where can P-9A be started?
Locally only at C-36. Indication and alarm for start in control room.
When does P-9B Start?
PS-1310 @ 83 psig lowering.
What are the details of starting/stopping P-9B from control room and locally?
- P-9B, Diesel Driven Fire Pump, can be started and stopped using P-9B/CS, Diesel Driven Fire Pump P-9B, in the Control Room.
- If P-9B was started by low system pressure or low system pressure has actuated while running, the ability to stop P-9B from the Control Room is no longer available.
- If P-9B is started from the Control Room, it must be stopped from the Control Room. If P-9B has been started locally, it cannot be stopped from the Control Room.
