LOT 201.21 Containment Isolation

Question 1

• LOT 201.21 Containment Isolation*
• • *

What will cause a Phase B CIS?

Answer 1

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)

Question 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?

Answer 2

LOCA

Fuel Handling Accident

Question 3

• LOT 201.21 Containment Isolation*
• • *

Does charging isolate on a phase A containment isolation?

Answer 3

Yes

Seals do not isolate.

Question 4

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

Answer 4

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]

Question 5

• LOT 201.21 Containment Isolation*
• • *

What will cause a Phase A CIS?

Answer 5

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)*

Question 6

• LOT 201.21 Containment Isolation*
• • *

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

Answer 6

> 200 ˚F

> 225 psig

Question 7

• LOT 201.21 Containment Isolation*
• • *

What will cause a SL Isolation Signal?

Answer 7

• ≥ 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.*

Question 8

When is LCO 3.6.1.1 Containment Integrity applicable?

Answer 8

MODES 1 - 4

Question 9

• LOT 201.21 Containment Isolation*
• • *

What causes a containment ventilation isolation signal?

Answer 9

• 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)*

Question 10

• LOT 201.21 Containment Isolation*
• • *

What causes a Feedwater Isolation Signal?

Answer 10

• P-4 True:*
• *T_ave - 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.*

Question 11

• LOT 201.21 Containment Isolation*
• • *

What types of lines require containment isolation?

Answer 11

Lines that form part of RCPB

Lines that connect to containment atmosphere

Lines that are part of a closed system