NOP

Question 1

What is the basis for not being critical with RCS Tavg belting less than 541*F?

Answer 1

MTC is within its analyzed temp range

Protective instrumentation is within its normal operating rage

PRZ is capable of being in an operable state w a steam bubble

Rx Vessel is above its minimum RTNDT temperature

Question 2

What are the rod withdrawal rate limits for > 50% power?

Answer 2

3 steps per hour only when increasing power more than 1% / hr

Question 3

What are the rod withdrawal rate limits for a conditioned power level > 50%?

Answer 3

Unrestricted up to conditioned power level AND then 3 steps per hour when increasing above conditioned power level

Question 4

What are the rod withdrawal rate limits for > 75% Power?

Answer 4

Not to exceed6 steps per hour if needed to maintain AFD within +/- 3% of target value

Question 5

For initial power ascension following refueling, what is the limit for = 50% Power?

Answer 5

No limit beyond UFSAR

Question 6

FOr initial power ascension following refueling, what is the limit for > 50% power?

Answer 6

3% full power per hour

Question 7

What is the initial power ascension following refueling for a conditioned power level > 50%?

Answer 7

10% full power per hour up to that conditioned Power level and then 3% full power per hour above conditioned power level

Question 8

How does using spray minimize boring concentration difference?

Answer 8

Enhances mixing of PRZ and RCS

Question 9

What could happen if PRZ concentration is different than RCS concentration?

Answer 9

Outsure to the RCS. It may be borate or diluted, causing a RCS Temperature transient

Question 10

After tripping the Rx, how long will it take for SR to energize?

Answer 10

10-15 mins

Question 11

During a RCS Cooldown, how is a continuous PRZ outsurge maintained?

Answer 11

Energize all PRZ backup heaters (continuous spray flow)

Maintain Net Charging flow within required limits

Question 12

Why do you want to maintain a continuous PRZ outsurge during RCS Cooldown?

Answer 12

Minimizes thermal stresses on PRZ surge line

Question 13

How many RCPs are required to be in operation with Tave > 541*F? Why?

Answer 13

All 4

Ensures protective instrumentation associated with the loops are operable

Question 14

When is an RCS Sample for iodine required?

Answer 14

Load Reduction of 15% in 1 hour

Question 15

If U2 is in mode 5 and the East RHR pump is in service, how is letdown flow affected if the RHR pump is lost?

Answer 15

LD flow is reduced due to loss of RHR pump discharge pump

Question 16

Why is 600 gpm of RHR diverted to the HLs?

Answer 16

To ensure Loop 3 HL remains subcooled uring PRZ Outsurge

Question 17

What is more limiting, RCS Heat up or Cool down? And Why?

Answer 17

Cool down - due to addition of tensile stresses on the inside vessel wall where allowable stress is the lowest

Question 18

Why must NLI-151 be used with a correction figure during cool down to determine PRZ Level?

Answer 18

Cold Cal indicator compares the weight of the water in the PRZ vs the weight in the ref column. The cold cal was calibrated at 150*F, so there may be a density difference between the reference and the cold cal

Question 19

What is the maximum RHR flow rate at reduced inventory? Why?

Answer 19

4,000 gpm to prevent air entrainment / vortex is and loss of RHR Pump

Question 20

Why is there only 1 RHR pump running at a time during half loop?

Answer 20

To prevent air entrainment

Question 21

What mode must we be in to remove power from RHR Suction valves?

Answer 21

Mode 5 to prevent closure. Must have power available in M4 for possible LOCA

Question 22

How much heat is added from all 4 RCPs?

Answer 22

12-14 MW

Question 23

What are the TS Limits for heatup of the RCS and PRZ?

Answer 23

RCS - 60*F / hr

PRZ - 100*F / hr

Question 24

Why is Hydrogen used to cool the main generator?

Answer 24

High thermal conductivity

Low windage losses

Non conductive

Non corrosive

Cheap

Question 25

Criticality occurs in approximately how many doublings?

Answer 25

5 to 7

Question 26

When is criticality declared?

Answer 26

Rx is actually super-critical, indicated by:

Constant + SUR
Rising Neutron counts rate without rod motion

Question 27

What is the SUR admin limit during startup when < / = 10E-8 amps?

Answer 27

0.5 DPM

Question 28

What is the SUR admin limit during startup when > 10E-8 amps?

Answer 28

0.25 DPM

Question 29

What is the rod withdrawal limit above POAH?

Answer 29

3 steps at a time until associated reactivity effects are complete

Question 30

What happens if you add positive reactivity when critical but below POAH?

Answer 30

Power rises until POHA or sufficient negative reactivity is added to stop the power rise

Question 31

What must be done if criticality occurs below the rod insertion limit?

Answer 31

Emergency borate until SDM > 1.3% is achieved

Open Trip Breakers and Verify Rod bottom lights lit

Question 32

What happens if criticality occurs outside the -1000 and +500 pcm limits?

Answer 32

Trip Rx

Question 33

Does the Control Air Compressor Load Shed?

Answer 33

NO!!!!!! But the PAC does.