ML073400047
| ML073400047 | |
| Person / Time | |
|---|---|
| Site: | Comanche Peak  |
| Issue date: | 01/25/2008 |
| From: | NRC/NRR/ADRO/DORL/LPLIV |
| To: | |
| Singal, Balwant, 415-3016, NRR/DORL/LPL4 | |
| Shared Package | |
| ML073400030 | List: |
| References | |
| TAC MD4070, TAC MD4071 | |
| Download: ML073400047 (8) | |
Text
Completion Times 1.3 1.3 Completion Times COMANCHE PEAK - UNITS 1 AND 2 1.3-2 Amendment No. 64 DESCRIPTION However, when a subsequent train, subsystem, component, or (continued) variable expressed in the Condition is discovered to be inoperable or not within limits, the Completion Time(s) may be extended.
To apply this Completion Time extension, two criteria must first be met.
The subsequent inoperability:
- a.
Must exist concurrent with the first inoperability; and
- b.
Must remain inoperable or not within limits after the first inoperability is resolved.
The total Completion Time allowed for completing a Required Action to address the subsequent inoperability shall be limited to the more restrictive of either:
- a.
The stated Completion Time, as measured from the initial entry into the Condition, plus an additional 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />; or
- b.
The stated Completion Time as measured from discovery of the subsequent inoperability.
The above Completion Time extensions do not apply to those Specifications that have exceptions that allow completely separate re-entry into the Condition (for each train, subsystem, component, or variable expressed in the Condition) and separate tracking of Completion Times based on this re-entry. These exceptions are stated in individual Specifications.
The above Completion Time extension does not apply to a Completion Time with a modified "time zero." This modified "time zero" may be expressed as a repetitive time (i.e., "once per 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br />," where the Completion Time is referenced from a previous completion of the Required Action versus the time of Condition entry) or as a time modified by the phrase "from discovery..."
(continued)
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Completion Times 1.3 1.3 Completion Times COMANCHE PEAK - UNITS 1 AND 2 1.3-6 Amendment No. 64 EXAMPLES EXAMPLE 1.3-3 (continued)
ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME A. One Function X train inoperable.
A.1 Restore Function X train to OPERABLE status.
7 days B. One Function Y train inoperable.
B.1 Restore Function Y train to OPERABLE status.
72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> C. One Function X train inoperable.
AND One Function Y train inoperable.
C.1 Restore Function X train to OPERABLE status.
OR C.2 Restore Function Y train to OPERABLE status.
72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> 72 hours (continued) 142
Completion Times 1.3 1.3 Completion Times COMANCHE PEAK - UNITS 1 AND 2 1.3-7 Amendment No. 64 EXAMPLES EXAMPLE 1.3-3 (continued)
When one Function X train and one Function Y train are inoperable, Condition A and Condition B are concurrently applicable. The Completion Times for Condition A and Condition B are tracked separately for each train starting from the time each train was declared inoperable and the Condition was entered. A separate Completion Time is established for Condition C and tracked from the time the second train was declared inoperable (i.e., the time the situation described in Condition C was discovered).
If Required Action C.2 is completed within the specified Completion Time, Conditions B and C are exited. If the Completion Time for Required Action A.1 has not expired, operation may continue in accordance with Condition A. The remaining Completion Time in Condition A is measured from the time the affected train was declared inoperable (i.e., initial entry into Condition A).
It is possible to alternate between Conditions A, B, and C in such a manner that operation could continue indefinitely without ever restoring systems to meet the LCO. However, doing so would be inconsistent with the basis of the Completion Times. Therefore, there shall be administrative controls to limit the maximum time allowed for any combination of Conditions that result in a single contiguous occurrence of failing to meet the LCO. These administrative controls shall ensure that the Completion Times for those Conditions are not inappropriately extended.
(continued)
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AFW System 3.7.5 COMANCHE PEAK - UNITS 1 AND 2 3.7-12 Amendment No. 109 3.7 PLANT SYSTEMS 3.7.5 Auxiliary Feedwater (AFW) System LCO 3.7.5 Three AFW trains shall be OPERABLE.
APPLICABILITY:
MODES 1, 2, and 3 ACTIONS
NOTE----------------------------------------------------------
LCO 3.0.4.b is not applicable.
CONDITION REQUIRED ACTION COMPLETION TIME A. One steam supply to turbine driven AFW pump inoperable.
A.1 Restore steam supply to OPERABLE status.
7 days B. One AFW train inoperable for reasons other than Condition A.
B.1 Restore AFW train to OPERABLE status.
72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> (continued)
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AC Sources - Operating 3.8.1 COMANCHE PEAK - UNITS 1 AND 2 3.8-2 Amendment No. 109 ACTIONS
NOTE--------------------------------------------------------
LCO 3.0.4.b is not applicable to DGs.
CONDITION REQUIRED ACTION COMPLETION TIME A. One required offsite circuit inoperable.
A.1 Perform SR 3.8.1.1 for required OPERABLE offsite circuit.
AND
NOTE-----------------
In MODES 1, 2 and 3, the TDAFW pump is considered a required redundant feature.
A.2 Declare required feature(s) with no offsite power available inoperable when its redundant required feature(s) is inoperable.
AND A.3 Restore required offsite circuit to OPERABLE status.
1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> AND Once per 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> thereafter 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> from discovery of no offsite power to one train concurrent with inoperability of redundant required feature(s) 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> (continued)
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AC Sources - Operating 3.8.1 ACTIONS (continued)
COMANCHE PEAK - UNITS 1 AND 2 3.8-4 Amendment No. 64 CONDITION REQUIRED ACTION COMPLETION TIME B. (continued)
AND B.4 Restore DG to OPERABLE status.
72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> C. Two required offsite circuits inoperable.
NOTE-------------
In MODES 1, 2 and 3, the TDAFW pump is considered a required redundant feature.
C.1 Declare required feature(s) inoperable when its redundant required feature(s) is inoperable.
AND C.2 Restore one required offsite circuit to OPERABLE status.
12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> from discovery of Condition C concurrent with inoperability of redundant required features 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> (continued)
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Distribution Systems C Operating 3.8.9 COMANCHE PEAK - UNITS 1 AND 2 3.8-38 Amendment No. 64 3.8 ELECTRICAL POWER SYSTEMS 3.8.9 Distribution Systems - Operating LCO 3.8.9 Train A and Train B AC, DC, and AC vital bus electrical power distribution subsystems shall be OPERABLE.
APPLICABILITY:
MODES 1, 2, 3, and 4 ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME A. One AC electrical power distribution subsystem inoperable.
A.1 Restore AC electrical power distribution subsystem to OPERABLE status.
8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> B. One AC vital bus subsystem inoperable.
B.1 Restore AC vital bus subsystem to OPERABLE status.
2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> (continued)
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Distribution Systems C Operating 3.8.9 ACTIONS (continued)
COMANCHE PEAK - UNITS 1 AND 2 3.8-39 Amendment No. 64 CONDITION REQUIRED ACTION COMPLETION TIME C. One DC electrical power distribution subsystem inoperable.
C.1 Restore DC electrical power distribution subsystem to OPERABLE status.
2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> D. Required Action and associated Completion Time not met.
D.1 Be in MODE 3.
AND D.2 Be in MODE 5.
6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> 36 hours E. Two trains with inoperable distribution subsystems that result in a loss of safety function.
E.1 Enter LCO 3.0.3.
Immediately SURVEILLANCE REQUIREMENTS SURVEILLANCE FREQUENCY 7 days SR 3.8.9.1 Verify correct breaker alignments and voltage to required AC, DC, and AC vital bus electrical power distribution subsystems.
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