Reactor Makeup Water Flashcards
(11 cards)
List the power supplies for BAT Pump u-01 & u-02
uEB1-1: u-01
uEB4-1: u-02
What are the six operating modes of the reactor makeup system?
- Off
- Auto
- Manual
- Dilute
- Borate
- Alt Dilute
What conditions will give a ‘BA FLO DEV’ alarm and what are the automatic actions?
Desired flow is not obtained within +/- 1 gpm within 25 seconds.
Automatic actions:
- Closes FCV-110B and FCV-111B
What conditions will give a ‘RMUW FLOW DEV’ alarm and what are the automatic actions?
Desired flow is not obtained within +/- 8 gpm within 25 seconds.
Automatic actions:
- Closes FCV-110B and FCV-111B
How many gpm per rotation of the BA flow controller pot-dial?
4 gpm
How many gpm per rotation of the RMUW flow controller pot-dial?
16 gpm
The preferred emergency boration flowpath flows through this MOV valve, what is it and where is it powered from?
Preferred emergency boration flowpath is through u-8104 and it’s powered from uEB4-1.
What is total flow limitation of the reactor makeup system operating in AUTO?
127 gpm
What is the administrative maximum boric acid flow at a concentration >1600 ppm?
27 gpm
FCV-110A/B & FCV-111A/B are DC solenoid-operated valves that share a power supply, where does this power come from? Additionally, each of these valves fail close on a loss of power or air with the exception of one. Which valve is this exception and why?
FCV-110A/B & FCV-111A/B are powered from uED1-1
FCV-110A is the exception, it fails open. This is to ensure a boric acid flowpath is available following a loss of power.
In the event of an emergency, there exist four emergency boration flowpaths. What are these flowpaths called and what are their credited flow rates?
Emergency Boration:
- Through u-8104: 75 gpm
Manual Emergency Boration
- Through uCS-8439: 36 gpm
Alternate Emergency Boration:
- Through FCV-110B & FCV-111B: 27 gpm
Gravity Feed Emergency Boration:
- Through u-8507 & u-8509: No restriction
