What are the functions of Containment?
- Limits the release of fission products
- Provides biological shielding.
- Provides source of water for recirc
What is the purpose of the Divider Barrier seal?
- prevents flow of steam and air from bypassing the ice condenser
What actuates a Cntmt Vent Isolation [CVI]?
- High Radiation (Upper: VRS1100/1200, Lower: ERS1300/1400)
- SI (1# in Lower Ctmnt)
- Manual Phase A switch
- Manual phase B switch
- Manual
What Hydrogen concentration do the Hydrogen Recombiners maintain?
< 4%
Can you enter Ctmnt doors to do repairs if you are in the TS for doors being inop?
- Yes
What causes a Cntmt Phase A Isolation?
- SI (1# in Lower Ctmnt) 2/3 channels
- Manual
- Closes Phase A isolations
- If manually actuated, Causes CVI
What causes a Cntmt Phase B Isolation?
- 2.8# in Lower Ctmnt 2/4 channels
- Manual
- Closes Phase B isolations
- If manually actuated, Causes CVI
*Energize to Operate
How many Refueling Canal Drains must be operable?
- 2 of 3
How are the Refueling Canal Drains sized?
- Sized to allow sufficient flow back to the recirculation sump and minimize steam bypassing the Ice Condenser
When are all access hatches through the barrier closed in Ctmnt?
- All access hatches through barrier are closed when RCS > 200°F
Why do we use Sodium Tetra-borate in the ice in the ice condenser?
- To keep iodine in solution post accident (keeps water at high pH)
How much pressure is needed to open the lower deck doors to the ice condenser?
- 1 p/sf
Which radiation monitors close inside ctmnt isolation valves?
- Odd numbered Radiation monitors close 100 series (inside ctmnt iso valves) and CIPS Fan
Which radiation monitors close outside ctmnt isolation valves?
- Even numbered Radiation monitors close 200 series (Outside ctmnt iso valves) and rest of Ctmnt Vet Supply Fans
What are the RCS leak detection monitors in ctmnt?
- Humidity (Dew Point)
- Sump Flows (Sump Pump Run Time Meters)
- Radiation Monitors (Gaseous and Particulate)
- –> Unit 1 combines Humidity and Gaseous Rad Waste. Particulate is a sole rad monitor
- –> Unit 2 combines Radiation Monitors (Gaseous and Particulate)
