L-86-254, IAEA RO 86-4:on 860806,IAEA Surveillance Interrupted During Loss of Lighting in Spent Fuel Pool.Caused by Deenergized C-bus,lights & Bridge Crane During Test to Verify Emergency Diesel Generator Loading Evaluation
| ML17342A650 | |
| Person / Time | |
|---|---|
| Site: | Turkey Point  |
| Issue date: | 08/08/1986 |
| From: | Woody C FLORIDA POWER & LIGHT CO. |
| To: | Mcdonald D Office of Nuclear Reactor Regulation |
| References | |
| 86-4, L-86-254, NUDOCS 8608120286 | |
| Download: ML17342A650 (6) | |
Text
REGULA Y INFORNATION DISTRIBUTI YSTEH (RIDS)
ACCESSION NBR: 8608120286 DOC. DATE: 86/08/08 NOTARIZED:
NO DOCKET FACIL:50-251 Turkey Point Planti Unit 4i Florida Power and Light C
05000251 AUTH. NANE AUTHOR AFFILIATION WOODYs C. O.
Florida Power Zc Lig ht Co.
RECXP. NANE REC IP XENT AFFILIATION
}'fCDONALDiD. Q.
PWR Prospect Directorate 2
SUBJECT:
XAEA RO 86-4: on 860806'AEA surveillance interrupted during loss of lighting in spent fuel pool. Caused bg deenergized C-bus> lights Zc bridge crane during test to verify emergency diesel generator loading evaluation.
DISTRIBUTION CODE A001D COPIES RECEIVED: LTR ENCL SI ZE:
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1 INTERNAL: ADN/LFNB NRR/ORAS RQN2 EXTERNAL: EQM BRUSKEi 8 NRC PDR 02 1
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FLORIDAPOWER & LIGHTCOMPANY AUG 8 1886 L-86-250 Office of Nuclear Reactor Regulation Attention:
Mr. D. G. McDonald, 3r., Project Manager PWR Project Directorate I/ 2 Division of PWR Licensing - A U. S. Nuclear Regulatory Commission Washington, D. C.
20555
Dear Mr. McDonald:
Re: Turkey Point Unit 0 Docket No. 50-251 IAEA Re ortable Occurrence 86-0 This letter and its attachment provides written notification of IAEA Reportable Occurrence 86-0 as requested by your letter (date 3une 3, 1986).
Should you require additional information, please contact us.
Very truly yours,
'. O. Woody Gruop Vice President Nuclear Energy COW/SAV:de cc:
Harold F. Reis, Esquire Mr. Gene Sparks, NRC Washington, M.S. 881SS PNS-LI-86-193 860812028b 860808 PDR
- DOCH, 05000251 Ll:1 PEQPLE... SERYING PFDPLE
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IAEA REPORTABLE OCCURRENCE 86-0O Summar of Event:
The Turkey Point Plant has performed a test to verify the Emergency Diesel Generator loading evaluation for Unit O.
This test verified that the proper phase sequence is maintained in the cable from the OKV bus OB breaker OAB22 to the OKV bus OA breaker OAA09.
In order to ensure the safety of the personnel, the continuity.and phase sequence was monitored using the C-bus instrumentation.
The use of C-bus in this test re'quired all of the C-bus loads to be stripped prior to energization from the vital busses.
At the end of the test, C-bus was again stripped of power whiLe being placed back to its normal configuration.
During the two separate times that C-bus was de-energized in this test, the Unit O Spent Fuel lights and bridge crane were also de-energized.
This test was started on 'August 6, 1986, and completed on August 7, 1986.
Results:
1.
The lighting in the spent fuel pool was off from 19O5 to 2000 on August 6, 1986.
2.
The lighting in the spent fuel pool was off from 0520 to 0525 on August 7, 1986.
3.
The spent fuel bridge crane was incapable of movement during the time the lights were out because it was de-energized from the same bus which de-energized the lighting.
==
Conclusion:==
There were no fuel inventory changes during the time when the IAEA surveillance was interrupted during the loss of Lighting in the spent fuel pool.
'SO:1
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