LOT 201.21 Containment Isolation Flashcards Preview

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Flashcards in LOT 201.21 Containment Isolation Deck (11):
1

LOT 201.21 Containment Isolation


What will cause a Phase B CIS?

Containment Pressure - High 3 (9.5 psig) [2/4]

Manual [2/2 on 1/2] (CP002/CP005)


Reset located on CP002.


Note:

  • Initiates Containment Spray
    • ​Manual initiation will only open valves (Must manually start pump)
  • Isolates CCW to RCPs (6 Valves)

2

LOT 201.21 Containment Isolation


An ESF actuation is designed to protect the general public from the release of FPP due to what types of accidents?

LOCA

Fuel Handling Accident

3

LOT 201.21 Containment Isolation


Does charging isolate on a phase A containment isolation?

Yes


Seals do not isolate.

4

What are the ≤ 1 hr actions for LCO 3.6.1.1 Containment Integrity?

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LCO 3.6.1.1 Containment Integrity
Action a.
Loss of Containment Integrity


Restore Integrity [1 hr]

OR

Be in MODE 3 [6 hrs]
AND
Be in MODE 5 [following 30 hrs]

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5

LOT 201.21 Containment Isolation


What will cause a Phase A CIS?

SI
P-11 False:
PZR Pressure - Low (1857 psig) [2/4]
Steam Pressure - Low (735 psig) [2/3 on 1/4]

No Permissives:
Containment Pressure - High (3.0 psig) [2/3]
Manual [1/2] (CP001/CP005)

Manually [1/2] (CP002/CP005)


P-11 False: PZR Pressure ≥ 1985 psig [1/3]

Reset located on CP002.


Note:
Will effect systems not safety related. (i.e IA to RCB)

6

LOT 201.21 Containment Isolation


What temperature and/or pressure would make a system a high energy system?

> 200 ˚F

> 225 psig

7

LOT 201.21 Containment Isolation


What will cause a SL Isolation Signal?

≥ P-11:
Steam Pressure - Low (735 psig) [2/3 on 1/4]

< P-11:
Steam Pressure Rate - High (100 psig w/ 50 sec TC) [2/3 on 1/4]

No Permissive:
Containment Pressure - High 2 (3.0 psig) [2/3]
Manual [1/2] (CP005/CP006)


P-11: PZR Pressure < 1985 psig [2/3]

Resets located on CP005/CP006.


Note:
Isolates MSIVs and MSIV bypass valves.

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8

When is LCO 3.6.1.1 Containment Integrity applicable?

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MODES 1 - 4

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9

LOT 201.21 Containment Isolation


What causes a containment ventilation isolation signal?

No Permissives:
SI
Radiation - High (RT8012/RT8013) [1/2]

Manual:
Containment Phase A [1/2]
(CP002/CP005)
Containment Phase B [2/2 on 1/2]
(CP002/CP005)


Reset located on CP022.


Note:
Isolates Containment Normal and Supplemental Purge Systems and Containment Airborne Activity Monitor (RT-8011)

10

LOT 201.21 Containment Isolation


What causes a Feedwater Isolation Signal?

P-4 True:
Tave - Low (574 ˚F) [2/4]

No Permissives:
SI
P-14
S/G Level - High (87.5%) [2/4 on 1/4]


P-4 True: Rx Trip [2/2] AND Bypass Bkrs [2/2] open


Note:
Closes FWIVs, bypasses, FRVs, Low FRVs, trips MFP turbines, and trips turbine.

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11

LOT 201.21 Containment Isolation


What types of lines require containment isolation?

Lines that form part of RCPB

Lines that connect to containment atmosphere

Lines that are part of a closed system