LOT 506.02 Reduced Inventory Flashcards
- LOT 506.02 Reduced Inventory*
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What is the definition of mid loop?
RCS water level is lower than the top of the flow area at the junction of the hot legs with the Reactor Vessel.
- LOT 506.02 Reduced Inventory*
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What is the status of containment when in reduced inventory operations?
- Equipment hatch:*
- *Closed and held by ≥ 4 bolts**
- PAL and AAL:*
- *≥ 1 door closed or capable of being closed**
- All other penetrations:*
- *Closed by CIV, Blind Flange, or manual valve**
- LOT 506.02 Reduced Inventory*
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What is required to enter mid loop?
- Time After Shutdown
- RHR Trains
- RHR Flowrate
- Time After Shutdown:*
- *≥ 72 hrs**
- RHR Trains:*
- *2 Trains**
- RHR Flowrate:*
- *> 2700 gpm (QPDS)**
- LOT 506.02 Reduced Inventory*
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How much RHR flow is required to sweep air bubbles out of the RHR HX?
≥ 3000 gpm
- LOT 506.02 Reduced Inventory*
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If RCS water level is below the Rx Vessel flange (39’ 3”), what is the only method allowed to be used to reduce RCS inventory?
Low Pressure Letdown
- LOT 506.02 Reduced Inventory*
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What must boron concentration be in midloop?
- Unrodded Midloop:*
- *≥ 2800 ppm**
- Rodded Midloop:*
- *≥ 500 ppm above SDM**
- LOT 506.02 Reduced Inventory*
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What is the definition of reduced inventory?
Irradiated fuel is in the Reactor Vessel
AND
- *Water level is lower than 3 feet below the Reactor Vessel flange.**
- 36’ 3”*
- LOT 506.02 Reduced Inventory*
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Whose permission is required to conduct an evolution that effects RCS inventory or shutdown cooling while in mid-loop?
Plant Manager
Applies to evolutions not called for in 0POP03-ZG-0009.
- LOT 506.02 Reduced Inventory*
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What is required if CETs exceed 300 ˚F w/ no RHR?
- *Feed and Bleed**
- LHSI and PORV*
When WR Sump Level > 15”, Transfer to Cold Leg Recirc
- LOT 506.02 Reduced Inventory*
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In reduced inventory operations, what is required to use AFW / PORVs as a secondary Heat Sink?
RCS Pressure ≈ 10 psig - 15 psig
≥ 2 SGs w/o nozzle dams
Reflux boiling is most effective form of heat removal.
- LOT 506.02 Reduced Inventory*
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Greater than 6” above hot leg centerline (32’ 9”) is required to restart an RHR pump. What is the preferred source of injection if water level is < 6”?
- -3” - 6”:*
- *CCP w/ RWST injection**
- < -3”:*
- *LHSI w/ cold leg injection**
Note:
IA OCIV should be manually overriden to remain open if water level < 6” above hot leg centerline.
- LOT 506.02 Reduced Inventory*
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If there is a level difference of ≥ 6” between the slinky and NR Hot Leg Level indication, what indication should be used?
NR Hot Leg Level
- LOT 506.02 Reduced Inventory*
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What SG insert/manway should be installed last and removed first during SG manway installation/removal?
1 RCS Hotleg Manway
Provides hotleg vent path
- LOT 506.02 Reduced Inventory*
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At what level does the slinky become inaccurate?
+9” (33’)
Slinky is connected to the top of the PZR and LOOP A Intermediate Leg.
