LOT 202.33 RCB HVAC Flashcards
- LOT 202.33 RCB HVAC*
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How many Rx Containment Fan Coolers (RCFC) are required to be operating?
4 of 6 units
LCO 3.6.2.3 Containment Cooling
5 of 6 units OPERABLE
Keeps containment ≤ 110 ˚F during normal operation and during spray. (LCO 3.6.1.5 Containment Air Temperature)
- LOT 202.33 RCB HVAC*
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When should the CRDM cooling fans be in operation?
- *RCS > 150 ˚F**
- Must be placed in operation at 350 ˚F*
2 of 3 required for operation.
Power Supply: MCC 1A5/1B5/1C5
Note:
Designed to keep CRDM insulation < 392 ˚F.
- LOT 202.33 RCB HVAC*
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What are the ≤ 1 hr actions for LCO 3.6.2.3 Containment Cooling System?
- LCO 3.6.2.3 Containment Cooling System*
- Action b.*
- > 1 group of RCFC Inoperable*
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Restore ≥ 2 groups to Operable [1 hr]
OR
Apply CRMP [1 hr]
OR
Be in MODE 3 [Next 6 hrs]
AND
Be in MODE 5 [Following 30 hrs]
- LOT 202.33 RCB HVAC*
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What is the temperature limit of the IVC as required by TRM 3.7.13 Air Temperature Monitoring?
- *≤ 104 ˚F**
- Shall not exceed for > 8 hrs OR > 30 ˚F*
- LOT 202.33 RCB HVAC*
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When must Rx cavity and supports ventilation be in operation?
RCS > 350 ˚F
One train required.
- LOT 202.33 RCB HVAC*
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What cools the RCFC AHUs?
- Normal:*
- *RCB Chilled Water**
- Emergency:*
- *CCW**
- LOT 202.33 RCB HVAC*
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Where in the MCR are the controls for the RCB HVAC system?
- *CP002**
- RCFC*
- *CP022**
- Everything Else*
- LOT 202.33 RCB HVAC*
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Which RCB HVAC subsystems are safety related?
RCFC
- *Normal / Supplementary Purge**
- CIVs / Piping to Rad Monitors*
- *MSIV Cubicle Ventilation**
- AFW pump room fans*
Containment Cubicle Exhaust Fans
RCFC P/S: (4 of 6 req)
- 11A (LC E1A1)/12A (LC E1A2)
- 11B (LC E1B1)/12B (LC E1B2)
- 11C (LC E1C1)/12C (LC E1C2)
Exhaust Fans P/S: (2 of 4 req)
- 27(MCC E1A4)
- 28(MCC E1B4)
- 29(MCC E1A2)
- 30(MCC E1C4)
- LOT 202.33 RCB HVAC*
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In what MODES is normal purge used?
MODES 5 and 6
Supplemental purge may be used in any mode.
