LOT 201.11 Containment Spray Flashcards
- LOT 201.11 Containment Spray*
- *
Where are your Containment Spray manual switches in the MCR?
- *CP002 and CP005**
- 4 total switches*
Requires 2/2 switches (CP002 OR CP005)
- Note:*
- Manual initiation will open discharge valves but operator must still start pumps unless SI signal present.
- CS pumps located on CP002
- LOT 201.11 Containment Spray*
- *
What will auto start/trip the Containment Spray pumps?
- Auto Start:*
- *SI** WITH Containment Pressure - High 3 (9.5 psig) [2/4]
- *SI** WITH Manual [2/2]
- CP002/CP005*
- Trip:*
- *Overcurrent**
CS Spray Actuation: Opens discharge valve
Pump Start: Starts ECCS cubicle vent fan
Note:
Cubicle fan will also start on room high temperature. (96 ˚F)
- LOT 201.11 Containment Spray*
- *
What does the Trisodium Phospate baskets maintain the pH of the ECCS water at during a DBA?
7.0 - 9.5
- 7.0 Basis: Retention of Iodine in sumps
- 9.5 Basis: Chloride stress corrosion cracking of stainless steel
- Note:*
- Initial pH of ECCS is as low as 4.5.*
- LOT 201.11 Containment Spray*
- *
The containment spray system will remove enough heat to keep containment pressure less than the design pressure (56.5 psig) with how many RCFCs running?
3 of 6 RCFCs
- Note:*
- Need 2 of 3 CS pumps*
- LOT 201.11 Containment Spray*
- *
What powers the CS pumps and the CS discharge valves?
- CS Pumps:*
- *E1A / E1B / E1C**
- CS Discharge Valves:*
- *MCC E1A2 / E1B2 / E1C2**
- LOT 201.11 Containment Spray*
- *
What provides water to the Containment spray pumps?
RWST
- *Emergency Sumps**
- Used during Recirc phase of LOCA*
Switches over on SI Recirc Signal
- SI w/ RWST Level - Low 2 (75,000 gal)
- LOT 201.11 Containment Spray*
- *
While in MODES 1 - 4, how much trisodium phosphate must there be in the containment baskets?
11,500 lbs - 15,100 lbs
LCO 3.6.2.2 Recirculation Fluid pH Control
Applicability: MODES 1 - 4
- Note:*
- 6 Baskets are in containment.*
