ML17255A493
| ML17255A493 | |
| Person / Time | |
|---|---|
| Site: | Ginna  |
| Issue date: | 10/07/1983 |
| From: | Snow B ROCHESTER GAS & ELECTRIC CORP. |
| To: | Murley T NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| References | |
| NUDOCS 8311070379 | |
| Download: ML17255A493 (4) | |
Text
y ZZZim rrVmtI kzan zzuz ROCHESTER GAS 3K'ND ELECTRIC CORPORATION
~ 89 EAST AVENUE, ROCHESTER, N.Y. 14649 TCi.CPHONC
~ HQ 'PITg QQPgAltEA coDE 7 le 546-2700 OCTOBER 87, 1903 DR.
THOMAS E.
MURLEY, REGIONAL ADMINISTRATOR U. S.
NUCLEAR REGULATORY COMMISSION OFFICE OF INSPECTION AND ENFORCEMENT REGXON I 631 PARK AVENUE KING OF
- PRUSSXA, PA 19486 DEAR DR.
MURLEY:
THIS LETTER IS TO CONFIRM THE OCTOBER 7, 1983 INXTIATXON AND SUBSEQUENT DEACTIVATION OF THE "UNUSUAL EVENT" CLASSIFXCATION AT GINNA STATION.
BELOW XS A
SUMMARY
OF EVENTS:
8618 8888 A SEISMXC EVENT OCCURRED IN THE UPSTATE AREA OF NEÃ YORK.
WHILE MOVEMENT WAS REPORTED IN THE ROCHESTER AREA, THIS WAS NOT NOTED BY THE CONTROL'ROOM OPERATORS'HE CONTROL ROOM BECAME AWARE OF THE EVENT THROUGH COMMERCIAL RADIO AND QUESTIONS BY TELEPHONE.
ACTUATION OF OUR TELEDYNE GEOTECH "STRONG-MOTION ACCEL-EROGRAPH" MODEL RFT-258 WAS INDICATED.
8826 AN UNUSUAL EVENT WAS DECLARED AT THE SITE WXTH APPROPRIATE NOTIFICATXONS TO THE STATE OF NEW YORK, WAYNE AND MONROE COUNTXES, AND THE NRC OPERATXON OFFICE BEING COMPLETED AT 8911.
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\\ 7 ACTXONS REQUXRED BY SC-5 "EARTHQUAKE EMERGENCY PLAN" WERE XNITIATED, INCLUDING STARTING OF BOTH EMERGENCY DIESEL GENERATORS, OPERATOR TOUR/INSPECTION OF THE
- PLANT, EXCLUDXNG CONTAINMENT, RADIATION SURVE'YS IN THE PLANT, MONITORING OF CONTAINMENT FOR INCREASED LEAKAGE AND PROCESSING OF THE ACCELEROGRAPH FILM.
INITIAL TOURS OF THE.PLANT HAD INDICATED NO DAMAGE.
AFTER PORC REVIEW OF THE INCIDENT AND CONFXRMATION OF'O,DEGRADATION OF THE POWER SYSTEM GRID RELIABXLITY, THE EMERGENCY DXESEL GENERATORS WERE REMOVED FROM SERVICE.'
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1588 THE PORC COMPLETED REVIEW OF ALL PLANT INSPECTIONS WHICH INDICATED NO ABNORMALITIES, AND REVIEWED THE RESULTS OF THE ACCELEROGRAPH.
THE RESULTS INDICATED THAT ACTUATION OF THE ACCELEROGRAPH HAD NOT OCCURRED, RATHER IT IS BELIEVED THAT THE ACTUATION INDICATING CIRCUIT WAS NOT RESET AFTER THE LAST CALIBRATIONS THE UNITS WERE CONFIRMED TO BE FUNCTIONAL BY CALIBRATION INDICATIONS AND WOULD HAVE RECORDED AN EVENT IN EXCESS OF 8.81g.
PORC RECOMMENDED REDUCTION OF THE CLASSI-FICATION IN ACCORDANCE WITH SC-118 "GINNA STATION EVENT EVALUATION FOR REDUCING THE CLASSIFICATION"~
UPON CONCURRENCE FROM THE VICE PRESIDENT OF ELECTRIC AND STEAM PRODUCTION, THE UNUSUAL EVENT WAS TERMINATED AT 1348 HOURS.
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J.
E.
MAIER R.
ZIMMERMAN BRUCE A.
SNOW SUPERINTENDENT NUCLEAR PRODUCTION
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