LOT 201.01 RCB

Question 1

• LOT 201.01 RCB*
• • *

What is the containment average air temperature limit as required in LCO 3.6.1.5 Contaiment Air Temperature?

Answer 1

≤ 110 ˚F

Determined by looking at running RCFC inlet temperatures.

Question 2

• LOT 201.01 RCB*
• • *

How are the RCB airlock doors interlocked?

Answer 2

• Personnel Airlock:*
• *Electronically AND Mechanically Interlocked**
• Aux Airlock:*
• *Mechanically Interlocked**

Prevents both doors from being opened at once.

Note:
Interlocks can be defeated when conditions permit

Question 3

• LOT 201.01 RCB*
• • *

What must IA header pressure to the airlock seals be in order to make the personnel airlock OPERABLE?

Answer 3

≥ 90 psig

Cannot decay more than 0.5 psig in 8hrs.

Cannot decay more than 1.5 psig in 24 hrs.

• Note:*
• LCO 3.6.1.3 Containment Airlocks is APPLICABLE in MODES 1 - 4.*

Question 4

• LOT 201.01 RCB*
• • *

Which containment radiation monitor(s) are/is covered by tech specs?

Answer 4

RCB Atmosphere Monitor RE-8011A (Particulate)

LCO 3.4.6.1 RCS Leak detection

Applicable in MODES 1 - 4

• Note:*
• RE-8011B (Iodine) and RE-8011C (Noble Gas) are non-safety related.*

Question 5

• LOT 201.01 RCB*
• • *

What will a containment pressure of ≥ 3.0 psig cause?

Answer 5

Containment Pressure - High (3.0 psig) [2/3]
Safety Injection
Reactor Trip
Containment Isolation Phase A
Containment Ventilation Isolation
FW Isolation

• Containment Pressure - High 2 (3.0 psig) [2/3]*
• *SL Isolation**

Uses PT-934, 935, 936 ONLY

• Note:*
• Containment Pressure - High and High 2 are the exact same setpoint….*

Question 6

• LOT 201.01 RCB*
• • *

What will a containment pressure of ≥ 9.5 psig cause?

Answer 6

• Containment Pressure - High 3 (9.5 psig) [2/4]:*
• *Containment Spray Actuation**
• *Containment Isolation Phase B**

Uses PT-934, 935, 936, AND 937

• Note:*
• Containment Pressure - High and High 2 use PT-934, 935, and 936 ONLY*

Question 7

• LOT 201.01 RCB*
• • *

How many emergency sumps are in the RCB?

Answer 7

Three

Supplies LHSI, HHSI, and Containment Spray (CS)

• Note:*
• Located on RCB -11’ 3”*

Question 8

• LOT 201.01 RCB*
• • *

What is the design pressure of containment?

Answer 8

• Internal:*
• *56.5 psig**
• Between -0.1 and +0.3 psig*
• CNMT PRESS HI / LOW (CP002)*
• (LCO 3.6.1.4 Containment Internal Pressure)*
• External:*
• *3.5 psig**

Max expected for DBA is 41.2 psig

CNMT PRESS HI/LOW on CP002 will put you in LCO 3.6.1.4 Containment Internal Pressure.

• Note:*
• Design temperature is 286 ˚F*

Question 9

• LOT 201.01 RCB*
• • *

Where are the RCB airlocks physically located?

Answer 9

• Personnel Airlock:*
• *RCB 68’ SE Quadrant**
• Aux Airlock:*
• *RCB 37’ NW Quadrant**

Question 10

• LOT 201.01 RCB*
• • *

What containment parameters are monitored in the MCR?

Answer 10

CP002:
Temperature
Humidity

• CP004:*
• *Normal / Secondary Sumps**
• CP005:*
• *Personnel Airlock Seals OCIVs**
• *Airlock Alarms**
• *Contaiment Pressure Alarms (High / High 3)**
• *Normal / Secondary Sumps (Alarms)**

CP018:
Pressure Recorder
Hydrogen Recorder
Normal / Secondary Sump Recorder

QDPS / ICS:
Pressure
Radiation (ICS / RM-11 / RM-23)
Normal / Secondary Sumps (QDPS ONLY)

Question 11

• LOT 201.01 RCB*
• • *

How is the fuel transfer tube sealed for containment purposes?

Answer 11

• RCB Side:*
• *Double-gasketed blind flange**
• FHB Side:*
• *Gate Valve**

Question 12

• LOT 201.01 RCB*
• • *

Containment is designed to withstand a safe shutdown earthquake (SSE). During such an event, what is the max expected offsite exposure for whole body and the thyroid?

Answer 12

• Whole Body:*
• *25 Rem**
• Thyroid:*
• *300 Rem**

10CFR100

Question 13

• LOT 201.01 RCB*
• • *

The normal and secondary RCB sumps have how many pumps?

Answer 13

• Secondary Sump:*
• *1 Pump**
• Pumps to Normal Sump*
• Normal Sump:*
• *2 Pumps w/ alternator**
• Pumps to Floor Drain Tank (FDT)*

Question 14

• LOT 201.01 RCB*
• • *

Which radiation monitors feed into PAMS?

Answer 14

• *RE-8050 AND RE-8051**
• RCB High Range Radiation*