Section 3.6 Containment Systems Flashcards
- LCO 3.6.1.5 Air Temperature*
- *
When is LCO 3.6.1.5 Air Temperature Applicable?
MODES 1-4
Bases:
< 110 ˚F assumed in the safety analyses for LOCA or SLB accident.
Note:
The primary containment average air temperature shall be the arithmetical average of a minimum of four RCFC inlet temperatures
- LCO 3.6.1.3 Containment Air Locks*
- *
What are your ≤ 1 hr action(s) if the containment air lock inoperable for reasons other than the door or interlock mechanism during MODES 1-4?
- LCO 3.6.1.3 Containment Air Locks*
- Action C*
- *
- Verify containment leakage [Immediately]
AND
- Verify containment air lock closed [1 hr]
AND
- Restore inoperable air lock [24 hrs]
OR
- Be in MODE 3 [6 hrs]
AND
- Be in MODE 5 [Following 30 hrs]
- LCO 3.6.1.6 Containment Structural Integrity*
- *
When is LCO 3.6.1.6 Containment Structural Integrity Applicable?
MODES 1-4
Bases:
Containment will be able to withstand ≤ 41.2 psig in the event of a LOCA or SLB.
- LCO 3.6.2.1 Containment Spray System*
- *
When is LCO 3.6.2.1 Containment Spray System Applicable?
MODES 1-4
Containment Spray and Containment Cooling both provide post accident cooling but containment spray also removes iodine.
- LCO 3.6.1.4 Internal Pressure*
- *
When is LCO 3.6.1.4 Internal Pressure Applicable?
MODES 1-4
- LCO 3.6.2.3 Containment Cooling System*
- *
What are your ≤ 1 hr action(s) if ≥ 2 groups of RCFCs are inoperable while in MODES 1-4?
- LCO 3.6.2.3 Containment Cooling System*
- Action B*
- *
- Restore at least 2 groups of RCFCs [1 hr]
OR
- Apply CRMP [1 hr]
OR
- Be in MODE 3 [6 hrs]
AND
- Be in MODE 5 [Following 30 hrs]
- LCO 3.6.1.3 Containment Air Locks*
- *
What are your ≤ 1 hr action(s) if the containment interlock mechanism is inoperable while in MODES 1-4?
- LCO 3.6.1.3 Containment Air Locks*
- Action B*
- *
- Verify OPERABLE air lock closed [1 hr]
AND
- Lock closed an OPERABLE air lock [24 hrs]
AND
- Verify OPERABLE air lock is locked [Every 31 days]
OR
- Be in MODE 3 [6 hrs]
AND
- Be in MODE 5 [Following 30 hrs]
- *
Note:
Entry/Exit from containment is permissible with dedicated individual
- LOT 201.11 Containment Spray*
- *
While in MODES 1 - 4, how much trisodium phosphate must there be in the containment baskets?
11,500 lbs - 15,100 lbs
LCO 3.6.2.2 Recirculation Fluid pH Control
Applicability: MODES 1 - 4
- Note:*
- 6 Baskets are in containment.*
- LCO 3.6.2.3 Containment Cooling System*
- *
How much CCW flow must go to each RCFC to make the RCFC OPERABLE?
≥ 1800 gpm
- LCO 3.6.2.3 Containment Cooling System*
- *
When is LCO 3.6.2.3 Containment Cooling System Applicable?
MODES 1-4
- LOT 201.11 Containment Spray*
- *
What does the Trisodium Phospate baskets maintain the pH of the ECCS water at during a DBA?
7.0 - 9.5
- 7.0 Basis: Retention of Iodine in sumps
- 9.5 Basis: Chloride stress corrosion cracking of stainless steel
- Note:*
- Initial pH of ECCS is as low as 4.5.*
- LCO 3.6.1.4 Internal Pressure*
- *
What are the ≤ 1 hr action(s) if the containment internal pressure is outside it’s limits while in MODES 1-4?
- LCO 3.6.1.4 Internal Pressure*
- Action A*
- *
- Restore pressure to within limits [1 hr]
OR
- Be in MODE 3 [6 hrs]
AND
- Be in MODE 5 [Following 30 hrs]
- LCO 3.6.2.2 Recirculation Fluid pH Control System*
- *
When is LCO 3.6.2.2 Recirculation Fluid pH Control System Applicable?
MODES 1-4
- LCO 3.6.2.1 Containment Spray System*
- *
What are your ≤ 1 hr action(s) if ≥ 1 Containment spray train is inoperable due to debris from a LOCA event while in MODES 1-3?
- LCO 3.6.2.1 Containment Spray System*
- Action C*
- *
- Initiate compensatory Actions [Immediately]
AND
- Restore Containment Spray Train(s) to OPERABLE [90 days]
OR
- Be in MODE 3 [6 hrs]
AND
- Be in MODE 5 [Following 30 hrs]
- 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?
- Whole Body:*
- *25 Rem**
- Thyroid:*
- *300 Rem**
10CFR100
- LCO 3.6.1.1 Containment Integrity*
- *
When is LCO 3.6.1.1 Containment Integrity Applicable?
MODES 1-4
- LCO 3.6.2.1 Containment Spray System*
- *
How much D/P must each containment spray pump generate while on recirculation?
≥ 283 psid
- LCO 3.6.3 Containment Isolation Valves*
- *
When is LCO 3.6.3 Containment Isolation Valves Applicable?
MODES 1-4
- LCO 3.6.1.6 Containment Structural Integrity*
- *
What are your ≤ 1 hr action(s) if containment is inoperable due to containment tensioning in MODES 1-4?
- LCO 3.6.1.6 Containment Structural Integrity*
- Action A*
- *
- Restore Containment to OPERABLE [1 hr]
OR
- Be in MODE 3 [6 hrs]
AND
- Be in MODE 5 [Following 30 hrs]
- LCO 3.6.1.3 Containment Air Locks*
- *
When is LCO 3.6.1.3 Containment Air Locks Applicable?
MODES 1-4
- LCO 3.6.1.3 Containment Air Locks*
- *
What are your ≤ 1 hr action(s) if 1 containment air lock door is inoperable while in MODES 1-4?
- LCO 3.6.1.3 Containment Air Locks*
- Action A*
- *
- Verify OPERABLE air lock closed [1 hr]
AND
- Restore inoperable air lock [24 hrs]
OR
- LOCK OPERABLE air lock closed [24 hrs]
AND
- Verify Air lock locked closed [Every 31 days]
OR
- BE in MODE 3 [6 hrs]
AND
- Be in MODE 5 [Following 30 hrs]
- *
Note:
May enter/exit through airlock to conduct repairs
- LCO 3.6.2.1 Containment Spray System*
- *
What are your ≤ 1 hr action(s) if ≥ 2 containment spray trains are inoperable in MODES 1-4?
- LCO 3.6.2.1 Containment Spray System*
- Action B*
- *
- Restore at least 2 trains of CSS [1 hr]
OR
- Apply CRMP [1 hr]
OR
- Be in MODE 3 [6 hrs]
AND
- Be in MODE 5 [Following 30 hrs]
- LCO 3.6.1.2 Containment Leakage*
- *
When is LCO 3.6.1.2 Containment Leakage Applicable?
MODES 1-4
- LOT 201.01 RCB*
- *
What is the design pressure of containment?
- 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*
- LCO 3.6.1.7 Containment Ventilation System*
- *
When is LCO 3.6.1.7 Containment Ventilation System Applicable?
MODES 1-4
Bases:
- 48 in are required to be shut b/c they have not been demonstrated capable of shutting during SLB/LOCA
- 18 in are capable of being shut during SLB/LOCA so 10CFR100 offsite dose limits will not be exceeded.
- LCO 3.6.1.1 Containment Integrity*
- *
What are your ≤ 1 hr action(s) if primary containment integrity is lost while in MODES 1-4?
- LCO 3.6.1.1 Containment Integrity*
- Action A*
- *
- Restore containment integrity [1 hr]
OR
- Be in MODE 3 [6 hrs]
AND
- Be in MODE 5 [Following 30 hrs]
- LCO 3.6.1.2 Containment Leakage*
- *
What are your ≤ 1 hr action(s) if the overall containment leakage rate or the combined leakage of all penetrations and valves subject to types B/C leakage tests exceed their limits while in MODES 1-4?
- LCO 3.6.1.2 Containment Leakage*
- Action A*
- *
- Restore Leakage to within limits [1 hr]
OR
- Be in MODE 3 [6 hrs]
AND
- Be in MODE 5 [Following 30 hrs]
