LOT 506.02 Reduced Inventory Flashcards

1
Q
  • LOT 506.02 Reduced Inventory*
    • *

What is the definition of mid loop?

A

RCS water level is lower than the top of the flow area at the junction of the hot legs with the Reactor Vessel.

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2
Q
  • LOT 506.02 Reduced Inventory*
    • *

What is the status of containment when in reduced inventory operations?

A
  • 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**
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3
Q
  • LOT 506.02 Reduced Inventory*
    • *

What is required to enter mid loop?

  • Time After Shutdown
  • RHR Trains
  • RHR Flowrate
A
  • Time After Shutdown:*
  • *≥ 72 hrs**
  • RHR Trains:*
  • *2 Trains**
  • RHR Flowrate:*
  • *> 2700 gpm (QPDS)**
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4
Q
  • LOT 506.02 Reduced Inventory*
    • *

How much RHR flow is required to sweep air bubbles out of the RHR HX?

A

≥ 3000 gpm

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5
Q
  • LOT 506.02 Reduced Inventory*
    • *

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?

A

Low Pressure Letdown

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6
Q
  • LOT 506.02 Reduced Inventory*
    • *

What must boron concentration be in midloop?

A
  • Unrodded Midloop:*
  • *≥ 2800 ppm**
  • Rodded Midloop:*
  • *≥ 500 ppm above SDM**
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7
Q
  • LOT 506.02 Reduced Inventory*
    • *

What is the definition of reduced inventory?

A

Irradiated fuel is in the Reactor Vessel

AND

  • *Water level is lower than 3 feet below the Reactor Vessel flange.**
  • 36’ 3”*
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8
Q
  • LOT 506.02 Reduced Inventory*
    • *

Whose permission is required to conduct an evolution that effects RCS inventory or shutdown cooling while in mid-loop?

A

Plant Manager

Applies to evolutions not called for in 0POP03-ZG-0009.

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9
Q
  • LOT 506.02 Reduced Inventory*
    • *

What is required if CETs exceed 300 ˚F w/ no RHR?

A
  • *Feed and Bleed**
  • LHSI and PORV*

When WR Sump Level > 15”, Transfer to Cold Leg Recirc

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10
Q
  • LOT 506.02 Reduced Inventory*
    • *

In reduced inventory operations, what is required to use AFW / PORVs as a secondary Heat Sink?

A

RCS Pressure ≈ 10 psig - 15 psig

≥ 2 SGs w/o nozzle dams

Reflux boiling is most effective form of heat removal.

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11
Q
  • LOT 506.02 Reduced Inventory*
    • *

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”?

A
  • -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.

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12
Q
  • LOT 506.02 Reduced Inventory*
    • *

If there is a level difference of ≥ 6” between the slinky and NR Hot Leg Level indication, what indication should be used?

A

NR Hot Leg Level

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13
Q
  • LOT 506.02 Reduced Inventory*
    • *

What SG insert/manway should be installed last and removed first during SG manway installation/removal?

A

1 RCS Hotleg Manway

Provides hotleg vent path

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14
Q
  • LOT 506.02 Reduced Inventory*
    • *

At what level does the slinky become inaccurate?

A

+9” (33’)

Slinky is connected to the top of the PZR and LOOP A Intermediate Leg.

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