Essential Spray Pond Flashcards
What are the auto-starts for the Essential Spray Pond pumps?
SLACCCD
SIAS
LOP
AFAS
CSAS/CREFAS/CRVIAS
DG Start
How long does the Ultimate Heat sink need to provide cooling?
Provide sufficient cooling for a period of 26 days without water makeup to cool down the unit and maintain it in a safe condition under the most adverse historical meteorological
conditions.
What is the worst case design basis accident for the Ultimate Heat Sink?
Maintains EW temperature to Essential Chiller ≤ 135°F following a design basis LOCA.
What is the Tech Spec minimum level for the Essential Spray Pond?
13 feet 6 inches is Tech Spec minimum (A usable water depth of 12 feet requires 13’-6” of actual water depth). Due to instrument uncertainty, Control Room indication must be 14 feet.
What are the power supplies for the Essential Spray Pond pump (SPA-P01 / SPB-P01)?
PBA-S03 / PBB-S04
What is the preferred source of make-up to the Spray Ponds?
Domestic Water (DS) - Preferred due to lower biological activity
(compared to Cooling Tower Makeup and Blowdown (TB) Reservoir)
When does the ESP SYS TRBL come in for supply vs. return flow mismatch? What is the basis for this alarm?
1500 gpm differential
A design basis of the system required us to be able to detect leakage from the system which would cause pond level to drop.
What are the heat loads for the ESP?
Diesel Generator Cooling systems
Essential Cooling Water Heat Exchangers
What are the makeup sources for the ESP?
Domestic Water (preferred) or
TB
Does Tech Spec 3.7.9 (Ultimate Heat Sink) requires which of the following:
Level
Temperature
pH
Level 12’ (usable, 13.5’ local 14’ in Control Room)
Temperature <89 degrees
What are the DIRECT Spray Pond cooling loads?
Diesel Generator cooling systems
Essential Cooling Water Heat Exchangers
