ML20080K828
| ML20080K828 | |
| Person / Time | |
|---|---|
| Site: | Point Beach  |
| Issue date: | 02/21/1995 |
| From: | DUQUESNE LIGHT CO. |
| To: | |
| Shared Package | |
| ML20080K827 | List: |
| References | |
| NUDOCS 9503010331 | |
| Download: ML20080K828 (1) | |
Text
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b fi Q
J j
i a.
Four service water pumps are operable, two from each train.*
e b.
All necessary valves, interlocks and~ piping required' for the '
functioning of the Service Water System during accident 1
- conditions are also operable.
2.
During power operation, the requirements of 15.3.3.D-1 may be modified' l
to allow one of the following components to be' inoperable at any one-l time.
If the system is not restored'to meet the conditions of j
15.3.3.D-1 within the time period specified, both reactors'will be placed in the hot shutdown condition within six hours and in cold j
shutdown within 36 hours4.166667e-4 days <br />0.01 hours <br />5.952381e-5 weeks <br />1.3698e-5 months <br />.
l a.
One of the four required service water pumps may be out of
]
service provided a pump is restored to operable status within j
24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.
b.
One of the two loop headers may be out of service for a period of l
24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.
l c.
A valve or other passive component may be out of' service provided repairs can be completed within 48 hours5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br />.
1 Basis l
e The normal procedure for starting the reactor is, first, to heat the reactor j
coolant to.near operating temperature, by running the reactor coolant pumps.
The reactor is then made critical by withdrawing ' control rods and/or diluting I
boron in the coolant.m With this mode of start-up, the energy. stored in the I
reactor coolant during the approach to criticality is substantially equal to i
that during power operation and therefore to be conservative most engineered l
safety system components and auxiliary cooling systems, shall be fully operable.
During low temperature physics tests there is a negligible amount of stored energy in the reactor coolant, therefore an accident comparab'le in severity to j
~
the Design Basis Accident is not possible, and the engineered safety systems are j
not required.
During the Unit le 199)4 refueling outage, one train $ service water pump l
operating with power supplied by the Alternate Shutdown System, 808/B09 480 volt buses, may be considered operable from a normal (offsite) power supply,; under the provisions of Technical Specification 15.3.0.C.
l Unit 1 - Amendment No.
15.3.3-6 Unit 2 - Amendment No.
9503010331 950221 PDR ADOCK 05000266 i
P PDR
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