MAKE-UP AND PURIFICATION Flashcards
What is the RCS activity limit for I-131 and Xe-133?
≤ 0.35 μCi/g I-131 and ≤797 μCi/g Xe-133 to limit offsite dose following SGTR and MSLB.
What is the minimum BWST volume required?
350,000 gallons.
What are the boron concentration and temperature requirements for the BWST?
Boron > 2500 ppm and temperature > 40°F.
What is the LCO for MU-T-1 restricted region?
72-hour LCO.
What action is required for MU-T-1 prohibited region?
Immediate entry into 3.0.1 to prevent gas entrainment of pumps.
What is the volume per inch for MU-T-1?
30 gallons per inch.
What is the minimum and maximum flow through MU demineralizers?
Minimum flow is 25 gpm, and maximum flow is 123 gpm.
What happens to a non-ES selected MUP if both normal 4kV feeder breakers are OPEN?
The MUP will trip and does NOT look at diesel breakers.
Can two MU pumps be run on the same bus?
No, you can’t run two MU pumps on the same bus.
What must be done during venting of MU-T-1?
One WDG-P-1A/B compressor must be running in HAND.
What happens to MU-V-2A/B on loss of VBA?
RM-L-1 letdown rad monitor interlocks CLOSE MU-V-2A/B.
What action is required on high RM-L-1?
Evacuate RCA per C-1-1.
What must be ensured before isolating demins?
Ensure the demin bypass valve is OPEN to prevent lifting relief valves.
What happens to MU-V-8 when MU-T-1 level drops below 18”?
MU-V-8 goes to THRU position for MUP NPSH.
What is the function of MU-V-18 during testing after a valid ES signal?
MU-V-18, powered from 11M DC, will CLOSE after 20 seconds.
What is the limit for letdown flowrate changes?
Changes should be limited to 2.5 gpm/min to prevent thermal stress in Letdown Coolers.
What happens to MU-V-25/26 on A/B 30# ES?
MU-V-25/26 CLOSE.
Which valve fails OPEN on loss of IA?
MU-V-32 is the only valve to fail OPEN on loss of IA.
What alignment is required for 1M DC during HPI line rupture concurrent with loss of DC?
Align 1M DC to the side with OPEN cross-connects.
What is required for HPI Flow Transmitter operability?
It must be OPERABLE for the train if that HPI train is providing seal injection; otherwise, enter a 72-hour LCO.
What is the maximum HPI flow rate to prevent pump runout?
HPI must be throttled to <515 gpm, including flow through MU-V-16s, SI (32 gpm), and Recirc (95 gpm).
What must remain CLOSED while in piggyback mode?
MU-V-36/37 must remain CLOSED to prevent rupturing MU-T-1.
What happens to MUPs following a LOOP?
No MUP will restart on Diesel (not ES selected); start MU-P-1A IAW AOP-41 to restore Seal Injection.
What steps are required for restoration of LD if RM-L-1 alarmed or ES?
Verify integrity of MU-T-1, RM-G-22/23 not alarmed, and RM-A-6/8 or portable in-service to detect release.
