ML19276F156
| ML19276F156 | |
| Person / Time | |
|---|---|
| Site: | Arkansas Nuclear  |
| Issue date: | 03/16/1979 |
| From: | ARKANSAS POWER & LIGHT CO. |
| To: | |
| Shared Package | |
| ML19276F151 | List: |
| References | |
| NUDOCS 7903270417 | |
| Download: ML19276F156 (2) | |
Text
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1.
Non-Routine Report No. 50-313/79-1 2.
Report Date:
3/16/79 3.
Occurrence Date:
2/16/79 4.
Facility:
Arkansas Nuc1 car One - Unit One Russellville, Arkansas 72801 5.
Identification of Occurrence:
The failure to maintain the maximum differential temperature across the condenser below 15*F as required by Appendix B of the Technical Specifications.
This Non-Routine Occurrence is reportable per Appendix B, T.S.
5.6.2(b).
6.
Conditions Prior to Occurrence:
Steady-State Power X
Reactor Power 2560 MWth Net Output 810 MWe flot Standby Cold Shutdown Percent of Full Power 100%
Refueling Shutdown Load Changes During I
Routine Power Operation Routine Startup Operation Routine Shutdown Operation other (specify) 7.
Description of Occurrence:
The unit was in steady state operation with four circulating water pumps in operation.
On 2/16/79, the temperature differential across the condenser exceeded the 15*F limit required by Appendix B, T.S.
2.1.1 (a ),
for approximately 2-1/2 hours with a maximum rise of 15.26*F.
Following the occurrence, during a review of the computer logs containing the condenser AT values, it was discovered that the Technical Specification limit also exceeded for approximately 49 hours5.671296e-4 days <br />0.0136 hours <br />8.101852e-5 weeks <br />1.86445e-5 months <br /> on was 2/9/79 through 2/11/79, with a maximum temperature rise of 15.45*F.
7903270o41]