NOP Flashcards
What is the basis for not being critical with RCS Tavg belting less than 541*F?
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
What are the rod withdrawal rate limits for > 50% power?
3 steps per hour only when increasing power more than 1% / hr
What are the rod withdrawal rate limits for a conditioned power level > 50%?
Unrestricted up to conditioned power level AND then 3 steps per hour when increasing above conditioned power level
What are the rod withdrawal rate limits for > 75% Power?
Not to exceed6 steps per hour if needed to maintain AFD within +/- 3% of target value
For initial power ascension following refueling, what is the limit for = 50% Power?
No limit beyond UFSAR
FOr initial power ascension following refueling, what is the limit for > 50% power?
3% full power per hour
What is the initial power ascension following refueling for a conditioned power level > 50%?
10% full power per hour up to that conditioned Power level and then 3% full power per hour above conditioned power level
How does using spray minimize boring concentration difference?
Enhances mixing of PRZ and RCS
What could happen if PRZ concentration is different than RCS concentration?
Outsure to the RCS. It may be borate or diluted, causing a RCS Temperature transient
After tripping the Rx, how long will it take for SR to energize?
10-15 mins
During a RCS Cooldown, how is a continuous PRZ outsurge maintained?
Energize all PRZ backup heaters (continuous spray flow)
Maintain Net Charging flow within required limits
Why do you want to maintain a continuous PRZ outsurge during RCS Cooldown?
Minimizes thermal stresses on PRZ surge line
How many RCPs are required to be in operation with Tave > 541*F? Why?
All 4
Ensures protective instrumentation associated with the loops are operable
When is an RCS Sample for iodine required?
Load Reduction of 15% in 1 hour
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?
LD flow is reduced due to loss of RHR pump discharge pump