P45 Floor and Equipment Drains Flashcards
What is the T.S. Leak rate for CTMT and DW equipment drain sumps?
Identified- 25 gpm
What’s the t.s. Limit for CTMT and DW floor drain leakage?
Unidentified 5gpm
Total leakage T.S. Limit
30 gpm
5 unidentified + 25 identified
What’s the main purpose of the standby pump in the turbine building?
In case of fire protection activation
When will the standby turbine building sump pump auto start?
Auto starts on its own independent hi level switch
When will the oily waste collection sump divert to dirty oil storage tank?
If both A and B pumps are running
MTLO tank level low
Hi flow through MTLO fire water spparger
What happens when high level is reached and one pump is running in recirc? What about when Hi Hi is reached?
Second pump start discharging to equipment drain transfer sump. Other pump stays in recirc
Hi Hi - recirc pump swaps to discharge (2 pumps discharging)
If Hi Hi level clears and Hi level and Hi temp still exist, how will pump respond?
If temp still high, returns to recirc after Hi Hi level clears
Where do floor and equipment drains drain to?
Liquid and solid radwaste
Where does non contaminated liquid drain to?
Storm drains
Where do sewage sumps drain to?
Sewage treatment system
P45 How does Auto A, standby B function operate?
A starts on Hi level
B starts on Hi Hi level
P45 How does alternate function work?
A starts on high level. Next time a high level comes in B will start.
At what point will a sump alarm in the control room?
Hi Hi level
Where do the floor drain sumps in the turbine Bldg pump to?
Liquid radwaste floor drain collector tank
Where does the standby pump for the turbine building floor drains pump to?
Waste surge tank
What cools DW equipment drain sump?
CCW
What happens when dw sump exceeds 140°F?
Pump auto starts in recirc routing water through coolers and back into sump
P45 When will the recirc pump stop?
<125°F
When can AUX /CTMT/ DW NOT be able to pump water out of tanks?
After group 6 isolations
Will room drain sump pump out on high level if the floor drain transfer tank level is high?
No, pump will start, but F036 valve will not open
