CTMT cooling Flashcards
What will trip a heater?
Low flow through the filter train
Fan trip
Charcoal high temp
What modes are available after CTMT or Aux isolation
Normal
CTMT cleanup
What order are the filters in for the filter train?
Demister Heater Pre-filter HEPA Charcoal Adsorber bed HEPA
What signals will cause valves to close and isolate CTMT?
Group 7 Manual -41.6" Rx level 1.23 psig drywell pressure 3.6 mr CTMT exhaust radiation
What signals isolate the Aux building?
-41.6”
1.23 psig drywell pressure
3.6 mr fuel handling area exhaust
30 mr fuel pool sweep
What cools the CTMT coolers?
PCW
What temp is CTMT maintained at?
80 deg F @ 60% humidity
What temp is the main steam tunnel inside CTMT maintained at?
125 deg F
What cools the main steam tunnel inside CTMT?
DCW
What temp is the sub-compartments of CTMT maintained at?
105 deg F
What’s the only difference between normal operation mode and CTMT clean up mode
Cleanup uses 2 filter trains,
Normal uses 1
What will start the STBY fan?
Low flow on either running fan or high DP across running filter train
What happens if smoke is detected in one of the ducts?
trips all fans
How do you reset the fan after smoke trips them off?
Locally reset the smoke detector, then locally take switch to stop and back to start
How do dampers fail?
all closed except for 25 A/B fail open
