LCO 3.5

what is the mode 1-4 SIT tech specs

2300-4400 PPM

1750-1950 cubic feet

600-625 PSIG n2

MOVs open and deenergized

how many hours to recover SIT boron? what about the other inop reasons

72 hours to restore from boron, 24 hours for everything else

what is required if the SITs cant be restored

mode 3 in 6 hours and less than 1837 psia in 12 hours

whats assumed with the SITs regarding a LBLOCA

3 sits assumed to inject, one is lost to the break

what are the SIT requirements when shutdown (mode 3-4)

MOV open greater than 430 psia

power removed greater than 1500 PSIA

2300-4400 PPM

260-625 PSIG N2 pressure

1361-2000 cubic feet (if 3 operable)

908-2000 cubic feet (if 4 operable)

what is required if 2 or more SITs inoperable

enter LCO 3.0.3 immediately

when is boron required to be checked when draining a sit to maintain level?

boron required to be checked within 6 hours due to potential of RCS in leakage

when are two ECCS trains required to be operable

modes 1-3 PZR greater than 1837 PSIA or Tc greater than 485 F

during shutdown how many trains of HPSI are required and how long do we have to restore

1 train of HPSI required and needs to be restored in 1 hour or be in mode 5 in 24 hrs

what are the tech spec requirements for the RWT?

60-120F

4000-4400 ppm

81.2-84.3% level based on Tave

what is the design flow of a HPSI?

75% of minimum design flow of one HPSI pump is capable of meeting or exceeding the decay heat boil off rate

what is the purpose of the minimum level requirements in the RWT

ensures we have NPSH for the SI pumps

ensures SDM maintained during a LOCA

Less volume is required at lower RCS temps due to less RCS contraction from a cooldown

what is the design basis of the max boron PPM concentration

limits boron precipitation in the core following a LCOA

how much TSP is required while operating modes 1-3? how long do we have to restore?

524 cubic feet

restore within 72 hours

what is the purpose of TSP?

raises recirc water PH to 7 and maintains Iodine in solution