KF

Question 1

What is the purpose of the KF (Catawba Spent Fuel Pool Cooling System)?

Answer 1

Designed to remove heat from the Spent Fuel Pool and maintain purity and optical clarity of the pool water during fuel handling operations.

Question 2

What is the mode of Applicability for LCO 3.7.14 Spent Fuel Pool Water Level?

Answer 2

During movement of irradiated fuel assemblies in the spent fuel pool.

Question 3

What SFP level is required per LCO 3.7.14 Spent Fuel Pool Water Level?

Answer 3

Greater than or equal to 23 ft (37.6 ft on 1KFP5120) over the top of irradiated fuel assemblies seated in the storage racks.

Question 4

Where can the Spent Fuel Pool level be made-up from?

Answer 4

-YM (unborated water source)
-RMWST (Reactor Makeup Water Storage Tank)(unborated water source)
-RHT (Recycle Hold Up tank)(borated water source with a varying concentration)
-FWST (borated water source)
-RN system (unborated water source) is assured makeup supply

Question 5

How many gallons of water per foot are in the SFP?

Answer 5

17,000 gallons of water per foot of level.

Question 6

What are the bases for the great than 23 feet requirement of LCO 3.7.14 Spent Fuel Pool Water Level?

Answer 6

-Meets the assumptions of iodine decontamination factors following a fuel handling accident.
-Shields and minimizes the general area dose when
the storage racks are filled to their maximum capacity.
-Provides shielding during the movement of spent fuel.

Question 7

Are the KF pumps automatically started by the sequencer following a blackout?

Answer 7

No, they get a permissive to start from load group 13, must be manually started.

Question 8

What signals will close KF-101B and KF-103A (FWST to SPENT FUEL POOL)?

Answer 8

-Ss signal
-When control is shifted to the associated Auxiliary S/D panels

Question 9

What occurs on a trip 2 signal on the Spent Fuel Building Refueling Bridge Monitors (1EMF-15 and 2EMF-4)?

Answer 9

Automatically stop the new fuel elevator from being raised

Question 10

What two signals would require securing the KF Pumps to prevent pump motor overheating?

Answer 10

-Sp
-An Ss coincident with a Lo FWST signal

Question 11

Per limits and precautions of OP/1/A/6200/005 (Spent Fuel Cooling System), what is the maximum flow through purification loop with only 1 pre-filter or post filter in service?

Answer 11

265 gpm

Question 12

Per limits and precautions of OP/1/A/6200/005 (Spent Fuel Cooling System), what is the maximum flow through purification loop with 2 pre-filters and 2 post filter in service?

Answer 12

530 gpm

Question 13

Per limits and precautions of OP/1/A/6200/005 (Spent Fuel Cooling System), what is the maximum fuel pool temperature for operating the purification system with the demineralizer in service?

Answer 13

125 degrees F

Question 14

Per limits and precautions of OP/1/A/6200/005 (Spent Fuel Cooling System), The maximum fuel pool temperature for operating the purification system with the KF System filters in service?

Answer 14

180 degrees F

Question 15

Per limits and precautions of OP/1/A/6200/005 (Spent Fuel Cooling System), The maximum fuel pool temperature for operating the skimmer loop?

Answer 15

200 degrees F

Question 16

Per limits and precautions of OP/1/A/6200/005 (Spent Fuel Cooling System), At what fuel pool temperature is the SSF non-functional?

Answer 16

Greater than or equal to 125 degrees F

Question 17

What is required actions for LCO 3.7.14 (Spent Fuel Pool Water Level) if spent fuel pool water level is not within limit?

Answer 17

Immediately Suspend movement of irradiated fuel assemblies in the spent fuel pool.
————-NOTE————–
LCO 3.0.3 is not applicable.

Question 18

What is required actions for LCO 3.7.15 (Spent Fuel Pool Boron Concentration) if Spent fuel pool boron concentration not within limit?

Answer 18

-Immediately suspend movement of fuel assemblies in the spent fuel pool
AND
-Immediately initiate action to restore spent fuel pool boron concentration to within limit
————-NOTE————–
LCO 3.0.3 is not applicable.

Question 19

What is required actions for LCO 3.7.16 (Spent Fuel Assembly Storage) if Requirements of the LCO not met.?

Answer 19

Immediately Initiate action to move the noncomplying fuel assembly to the correct location.
————–NOTE————-
LCO 3.0.3 is not applicable.

Question 20

Per SLC 16.7-17 Spent Fuel Pool (SFP) Wide Range (WR) Level Instrumentation, how many SFP WR Level Instrumentation channels shall be FUNCITONAL and when?

Answer 20

2 Whenever irradiated fuel assemblies are stored in the SFP.

Question 21

What is required actions for SLC 16.9-21 Refueling Operations - Storage Pool Water Level) if less than 23 ft of water in the SFP?

Answer 21

-Immediately suspend all movement of fuel assemblies and crane operations with loads in the fuel storage area.
AND
-With in 4 hours restore water level to within limit.

Question 22

Per SLC 16.9-21 Refueling Operations - Storage Pool Water Level), what is the bases for the minimum water level of 23 feet?

Answer 22

Ensure that sufficient water depth is available to remove 99% of the assumed 10% iodine gap activity released from the rupture of an irradiated fuel assembly