W3P85-1476, Special Rept 85-001-00:on 850905,while in Mode 5,two Triazial Peak Accelerographs in Reactor Bldg Discovered Damaged by Heat & Vibration.Engineers Studying Possibility of Relocating Instruments

Special Rept 85-001-00:on 850905,while in Mode 5,two Triazial Peak Accelerographs in Reactor Bldg Discovered Damaged by Heat & Vibration.Engineers Studying Possibility of Relocating Instruments

ML20135H544
Person / Time
Site:	Waterford
Issue date:	09/16/1985
From:	Cook K LOUISIANA POWER & LIGHT CO.
To:	Martin R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
References
SR-85-001-00, SR-85-1, W3P85-1476, NUDOCS 8509230751
Download: ML20135H544 (3)

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. NFW ORLE ANS LOUISIANA 70174 . (504) 366 2345 UbuSOEsNU September 16, 1985 W3P85-1476 A4.05 Mr. Robert D. Martin Regional Administrator, Region IV U.S. Nuclear Regulatory Commission 611 Ryan Plaza Drive. Suite 1000 khkkkM Arlington, TX 76011 SEPl7IN

Subject:

Waterford 3 SES Docket No. 50-382 " p License No. NPF-38 Reporting of Special Report

Dear Mr. Martin:

Attached is Special Report Number SR-85-001-00 for the Waterford 3 Steam Electric Station. This Special Report is submitted per Technical Specification 3.3.3.3.

Very truly yourn, 1)

K.W. Cook f Nucicar Support & Licensing Manager KVC:GEW:sms Attachment cc: NRC Document Control Desk NRC, Director, Office of IAE C.W. Knighton, NRC-NRR

.T.II. Wilson, NHC-NRR HRC Resident inspectors Office INPO Records Center (J.T. Whenlock)

B.W. Churchill k W.H. Stevenson

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ADOCK 05000302 PDft db/ i

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SPECIAL REPORT SR-85-001-00 INTRODUCTION

'At 1550 hours0.0179 days <br />0.431 hours <br />0.00256 weeks <br />5.89775e-4 months <br /> on September 5, 1985 Waterford 3 Steam Electric Station was in mode 5 (cold shutdown) when plant personnel, while performing the surveillance requirements specified in Technical Specification 4.3.3.3.1, discovered that the two (2) Triaxial Peak Accelerographs located within the Reactor Building, were damaged due to excessive heat and vibration.

Since the plant conditions needed to produce such damage have not existed at Waterford 3 since mid-July (on July 18 Waterford 3 was removed from service due to high vibrations on the Main Turbine), it is felt that the above accelerographs have been inoperable for longer than the 30 days delineated in Technical Specification 3.3.3.3.a.

NARRATIVE At 1550 hours0.0179 days <br />0.431 hours <br />0.00256 weeks <br />5.89775e-4 months <br /> on September 5, 1985 Waterford 3 Steam Electric Station was in mode $

(cold shutdown) when plant personnel, while performing the surveillance requirements specified in Technical Specification 4.3.3.3.1, discovered that the two (2) Triaxini Peak Accelerographs (SM-IYR-6020 and -6021) located within the Reactor Building, were damaged due to excessive heat and vibration.

An investigation revealed that due to the excessive heat and vibration associated with the location of each accelerograph, components within tho instruments were melted and damaged rendering the equipment inoperable.

Since these seismic instruments perform only a recording function. it is believed that the inoperability of the above instruments do not pose a safety cencern.

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• i CORRECTIVE ACTION An engineering evaluation has concluded that the present locations of the eccelerographs are not suitable for the equipment design. Therefore, engineering personnel are studying the possibility of relocating the instruments in a more hospitable location. Every effort will be made to restore the instruments to an operable status as soon as practical, however, since the instruments are located in the Reactor Building, it is estimated that the work will not be completed until the end of the first refueling outage.

PLANT CONTACT T. Smith, Maintenance Superintendent, 504/464-3138