Radioactive Drains Flashcards
Where does the Reactor Cavity Sump collect leakage from ?
Collects leakage & condensate from Reactor Cavity & Excore Instrumentation
The max volume of the Reactor Cavity Sump is 520gallons, what should the operation of the both sump pumps be ?
At that volume both sump pumps should be operating
Where does the Reactor Cavity Sump vent to ?
It’s vents to containment building atmosphere
When will control room alarm be activated for the Reactor Cavity Sump ?
-Generated on high level or if level increases greater than 1gpm for 1hr
-Also may alarm on excessive Sump Pump run time
Where do the Reactor Cavity Sump pump to ?
Pumps liquid from Reactor Cavity Sump to the East Containment Sump
Where are the Reactor Cavity Sump Pumps powered from ?
They’re powered from 480VAC MCC(NH)
Where do the Containment East & West Radwaste Sumps collect from?
Collects leakage & condensed liquid inside containment
Where does West Sump receive effluent from inside containment?
-Floor drains
-Equipment Drains
-Refueling Pool
-Refueling Pool linear plate detector compartment
What’re the two penetrations on the East Sump receiving effluent from ?
One of them is for:
-Floor Drains
-Equipment Drains
-Refueling Pool
Second is from:
-Reactor Cavity Sump Pumps
When will an alarm actuate inside control room East & West Sump?
-Generated on high level or has inflow greater than 1gpm for one hour
-Has abnormal excessive sump pump run time
What’re the Containment Radwaste Sump Pumps used for ?
Pumps Containment Sump contents out of containment to Liquid Radwaste TDS Holdup Tanks
What should you do during unusual run time containment sump ?
You should report it to the control room
Where is Containment Sump run time displayed at ?
Displayed on MCC Breaker & logged on shifting basis
Why do the ESF Equipment Room have separate drainage system ‘A’ & ‘B’ trains ?
So that if one ESF room of one train is flooded it won’t jeopardize the other train
Where do the ESF ‘A’ & ‘B’ train drainage systems drain to ?
They drain to there own independent segregated sumps
What are the penetrations for each ESF Sump ? Where does each sump vent to ?
-SDCHX
-CS Pump Room
-HPSI Pump Room
-LPSI Pump Room
-Pipe Chase
-Vents to Aux. Building HVAC Exhaust
What’re the ESF Sump Pumps used for ?
Used to transfer ESF Sump contents to Liquid Radwaste TDS Holdup Tanks
What’re the ESF Sump Pumps lubricated by ?
Lubricated by Demineralized Water
What kind of capacity do the ESF Sump Pumps have ?
They both have 100% capacity
Where does the penetration into the Non-ESF Sump come from ? Where is it vented to ?
-It comes from floor drains & equipment drains throughout the Aux. Building
-Also Equipment Drain Tank relief valve relieves into sump
-Vented to Aux. Building HVAC Exhaust
What’re the Non-ESF Sump Pump used for ?
Pump sump contents to liquid Radwaste
What happens when Charging Pump Oil Drain Tank becomes full ?
Oil is pumped into a 55gallon drum & rest of water is drained into Radwaste Building Sump
What’re the four pipe penetrations into the Fuel Building Sump ? Where does Fuel Building Sump vent to ?
-Floor drains & equipment drains
-Cask Decontamination pit
-Fuel Pool Linear Plate Leak Detector Compartment
-Cask Pit
-Vents to Fuel Building atmosphere
What’re the pipe penetrations into the Holdup Tank Area Sump ?
-RMWT
-CVCS Holdup Pump Room
-Refueling Water Tank
-CVCS Holdup Tank Overflow
Where do the Decon. & Laundry Facility Sump Pumps deliver water to ?
They pump sump contents to the LR Chemical Drain Tanks
Where are the hand switches for Containment Sump Pumps located ?
Located in Control Room on B07
What is used to equalize run time for sump pumps ?
An alternator is used to switch between the two pumps
When will pump start/ stop when switch is placed in AUTO?
-Will start on sump HI level
-Will stop on sump LO level
When a sump pump starts, what else must start ?
Bearing cooling water supply solenoid valve must be energized to provide Demon. Water for lubrication
What happens if a HI-HI sump level is reached ? What will happen in control room on HI-HI sump level ?
-It will actuate the standby pump to run
-HI-HI Sump LVL will alarm B07 in Control Room
What happens in Radwaste Control Room when Radwaste Building Sump level HI-HI?
Radwaste control room will alarm
What happens if sump has LO-LO level on LSLL ?
Any running sump pump will be stopped on LO-LO level
What could happen on a loss of Radioactive Drain system ?
-If pumps didn’t work sumps would overflow causing radioactive spill
-If level gets high enough it could cause loss of safety equipment
