ML100550456
| ML100550456 | |
| Person / Time | |
|---|---|
| Site: | Watts Bar  |
| Issue date: | 02/02/2010 |
| From: | Tennessee Valley Authority |
| To: | Office of Nuclear Reactor Regulation |
| References | |
| Download: ML100550456 (11) | |
Text
Accumulators 3.5.1 Watts Bar - Unit 2 3.5-1 (developmental)
B 3.5 EMERGENCY CORE COOLING SYSTEMS (ECCS) 3.5.1 Accumulators LCO 3.5.1 Four ECCS accumulators shall be OPERABLE.
APPLICABILITY:
MODES 1 and 2, MODE 3 with pressurizer pressure > 1000 psig.
ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME A. One accumulator inoperable due to boron concentration not within limits.
A.1 Restore boron concentration to within limits.
72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> B. One accumulator inoperable for reasons other than Condition A.
B.1 Restore accumulator to OPERABLE status.
24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> C. Required Action and associated Completion Time of Condition A or B not met.
C.1 Be in MODE 3.
6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> AND C.2 Reduce pressurizer pressure to 1000 psig.
12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> D. Two or more accumulators inoperable.
C.3 Enter LCO 3.0.3.
Immediately
Accumulators 3.5.1 Watts Bar - Unit 2 3.5-2 (developmental)
A SURVEILLANCE REQUIREMENTS SURVEILLANCE FREQUENCY SR 3.5.1.1 Verify each accumulator isolation valve is fully open.
12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> SR 3.5.1.2 Verify borated water volume in each accumulator is 7630 gallons and 8000 gallons.
12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> SR 3.5.1.3 Verify nitrogen cover pressure in each accumulator is 610 psig and 660 psig.
12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> SR 3.5.1.4 Verify boron concentration in each accumulator is 3000 ppm and 3300 ppm.
31 days AND
NOTE---------
Only required to be performed for affected accumulators Once within 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> after each solution volume increase of 75 gallons, that is not the result of addition from the refueling water storage tank SR 3.5.1.5 Verify power is removed from each accumulator isolation valve operator when pressurizer pressure is 1000 psig.
31 days
ECCS - Operating 3.5.2 Watts Bar - Unit 2 3.5-3 (developmental)
A 3.5 EMERGENCY CORE COOLING SYSTEMS (ECCS) 3.5.2 ECCS - Operating LCO 3.5.2 Two ECCS trains shall be OPERABLE.
NOTE--------------------------------------------
- 1. In MODE 3, both safety injection (SI) pump flow paths may be isolated by closing the isolation valves for up to 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> to perform pressure isolation valve testing per SR 3.4.14.1.
- 2. In MODE 3, the safety injection pumps and charging pumps may be made incapable of injecting to support transition into or from the Applicability of the LCO 3.4.12, Cold Overpressure Mitigation System (COMS) for up to four hours or until the temperature of all the RCS cold legs exceeds 375°F, whichever occurs first.
APPLICABILITY:
MODES 1, 2, and 3.
ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME A. One or more trains inoperable.
AND At least 100% of the ECCS flow equivalent to a single OPERABLE ECCS train available.
A.1 Restore train(s) to OPERABLE status.
72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> B. Required Action and associated Completion Time not met.
B.1 Be in MODE 3.
6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> AND B.2 Be in MODE 4.
12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />
ECCS - Operating 3.5.2 Watts Bar - Unit 2 3.5-4 (developmental)
B SURVEILLANCE REQUIREMENTS SURVEILLANCE FREQUENCY SR 3.5.2.1 Verify the following valves are in the listed position with power to the valve operator removed.
Number Position Function 2FCV-63-1 Open RHR Supply 2FCV-63-22 Open SIS Discharge 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> SR 3.5.2.2 Verify each ECCS manual, power operated, and automatic valve in the flow path, that is not locked, sealed, or otherwise secured in position, is in the correct position.
31 days SR 3.5.2.3 Verify ECCS piping is full of water.
31 days SR 3.5.2.4 Verify each ECCS pump's developed head at the test flow point is greater than or equal to the required developed head.
In accordance with the Inservice Testing Program SR 3.5.2.5 Verify each ECCS automatic valve in the flow path that is not locked, sealed, or otherwise secured in position, actuates to the correct position on an actual or simulated actuation signal.
18 months SR 3.5.2.6 Verify each ECCS pump starts automatically on an actual or simulated actuation signal.
18 months (continued)
ECCS - Operating 3.5.2 Watts Bar - Unit 2 3.5-5 (developmental)
B SURVEILLANCE REQUIREMENTS (continued)
SURVEILLANCE FREQUENCY SR 3.5.2.7 Verify, for each ECCS throttle valve listed below, each position stop is in the correct position.
Valve Number CCP Discharge Throttle SI Cold Leg Throttle SI Hot Leg Throttle Valves Valves Valves 263-582 263-550 263-542 263-583 263-552 263-544 263-584 263-554 263-546 263-585 263-556 263-548 18 months SR 3.5.2.8 Verify, by visual inspection, each ECCS train containment sump suction inlet is not restricted by debris and the suction inlet trash racks and screens show no evidence of structural distress or abnormal corrosion.
18 months
ECCS - Shutdown 3.5.3 Watts Bar - Unit 2 3.5-6 (developmental)
A 3.5 EMERGENCY CORE COOLING SYSTEMS (ECCS) 3.5.3 ECCS - Shutdown LCO 3.5.3 One ECCS train shall be OPERABLE.
APPLICABILITY:
MODE 4 ACTIONS
NOTE-------------------------------------------------------------
LCO 3.0.4.b is not applicable to ECCS high head (centrifugal charging) subsystem.
CONDITION REQUIRED ACTION COMPLETION TIME A. Required ECCS residual heat removal (RHR) subsystem inoperable.
NOTE-------------------
The required ECCS residual heat removal (RHR) subsystem may be inoperable for up to 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> for surveillance testing of valves provided that alternate heat removal methods are available via the steam generators to maintain the Reactor Coolant System Tavg less than 350°F and provided that the required subsystem is capable of being manually realigned to the ECCS mode of operation from the main control room.
A.1 Initiate action to restore required ECCS RHR subsystem to OPERABLE status Immediately (continued)
ECCS - Shutdown 3.5.3 Watts Bar - Unit 2 3.5-7 (developmental)
A ACTIONS (continued)
CONDITION REQUIRED ACTION COMPLETION TIME B. Required ECCS centrifugal charging subsystem inoperable.
B.1 Restore required ECCS centrifugal charging subsystem to OPERABLE status.
1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> C. Required Action and associated Completion Time of Condition B not met.
C.1 Be in MODE 5.
24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> SURVEILLANCE REQUIREMENTS SURVEILLANCE FREQUENCY SR 3.5.3.1
NOTE------------------------------
An RHR train may be considered OPERABLE during alignment and operation for decay heat removal, if capable of being manually realigned to the ECCS mode of operation.
The following SRs are applicable for all equipment required to be OPERABLE:
SR 3.5.2.1 SR 3.5.2.3 SR 3.5.2.4 SR 3.5.2.7 SR 3.5.2.8 In accordance with applicable SRs
RWST 3.5.4 Watts Bar - Unit 2 3.5-8 (developmental)
A 3.5 EMERGENCY CORE COOLING SYSTEMS (ECCS) 3.5.4 Refueling Water Storage Tank (RWST)
LCO 3.5.4 The RWST shall be OPERABLE.
APPLICABILITY:
MODES 1, 2, 3, and 4.
ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME A. RWST boron concentration not within limits.
OR RWST borated water temperature not within limits.
A.1 Restore RWST to OPERABLE status.
8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> B. RWST inoperable for reasons other than Condition A.
B.1 Restore RWST to OPERABLE status.
1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> C. Required Action and associated Completion Time not met.
C.1 Be in MODE 3.
6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> AND C.2 Be in MODE 5.
36 hours4.166667e-4 days <br />0.01 hours <br />5.952381e-5 weeks <br />1.3698e-5 months <br />
RWST 3.5.4 Watts Bar - Unit 2 3.5-9 (developmental)
A SURVEILLANCE REQUIREMENTS SURVEILLANCE FREQUENCY SR 3.5.4.1
NOTE------------------------------
Only required to be performed when ambient air temperature is < 60°F or > 105°F.
Verify RWST borated water temperature is 60°F and 105°F.
24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> SR 3.5.4.2 Verify RWST borated water volume is 370,000 gallons.
7 days SR 3.5.4.3 Verify boron concentration in the RWST is 3100 ppm and 3300 ppm.
7 days
Seal Injection Flow 3.5.5 Watts Bar - Unit 2 3.5-10 (developmental)
A 3.5 EMERGENCY CORE COOLING SYSTEMS (ECCS) 3.5.5 Seal Injection Flow LCO 3.5.5 Reactor coolant pump seal injection flow shall be 40 gpm with charging pump discharge header pressure 2430 psig and the pressurizer level control valve full open.
APPLICABILITY:
MODES 1, 2, and 3.
ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME A. Seal injection flow not within limit.
A.1 Adjust manual seal injection throttle valves to give a flow within limit with charging pump discharge header pressure 2430 psig and the pressurizer level control valve full open.
4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> B. Required Action and associated Completion Time not met.
B.1 Be in MODE 3.
6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> AND B.2 Be in MODE 4.
12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />
Seal Injection Flow 3.5.5 Watts Bar - Unit 2 3.5-11 (developmental)
A SURVEILLANCE REQUIREMENTS SURVEILLANCE FREQUENCY SR 3.5.5.1
NOTE------------------------------
Required to be performed within 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> after the Reactor Coolant System pressure stabilizes at 2215 psig and 2255 psig.
Verify manual seal injection throttle valves are adjusted to give a flow within limit with charging pump discharge header pressure 2430 psig and the pressurizer level control valve full open.
31 days