ML20085H118
| ML20085H118 | |
| Person / Time | |
|---|---|
| Site: | Browns Ferry  |
| Issue date: | 10/03/1974 |
| From: | Eric Thomas TENNESSEE VALLEY AUTHORITY |
| To: | Case E US ATOMIC ENERGY COMMISSION (AEC) |
| Shared Package | |
| ML20085H122 | List: |
| References | |
| NUDOCS 8308300200 | |
| Download: ML20085H118 (2) | |
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TENNESSEE VALLE:( AUTHO AITY MM CHATTANOOGA, TENNESSEE 3i d'
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X2f Mr. Edson G. Case g pg3 e-e.
Acting Director of Licensing C:
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Dear Mr. Case:
TEIRESSEE VALLEY AUTHORITY - BROWS FERRY UUCLEAR PLANT UNIT 1 -
DOCKET UO. 50-259 - FACILITY OPERATHTG LICENSE DPR ABNORMAL OCCURRH CE REPORT BFAO-50-259/7451W The enclosed report is to provide details concerning the HPCI inverter which failed cnd is submitted in accordance with Appendix A to Regulatory Guide 1.16, Revision 1, October 1973. This event occurred on Browns Ferry Huclear Plant unit 1 on September 23, 1974.
Very truJy yours, TE EESSEE VALLEY AUTEORITY
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[DirectorofPowerProduction E. F. Thomas v
Enclosure CC (Enclosure):
Mr. Nome.n C. Moseley, Director Region II Regulatory Operations Office, USAEC 230 Peachtree Street, ml., Suite 818 Atlanta, Georgia 30303 8308300200 741003 PDR ADOCK 05000259 S
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/Bl 01tGL OCCURRE: ICE REPORT heport No.: EFAo-50-259/7h51U Report Date: October 3, 1974 Occurrence Date:
Septe=ber 23, 1974 Facility: Browns Ferry nuclear Plant unit 1 Identification of Occurrence The HPCI inverter failed.
Conditions Prior to' Occurrence The reactor was in cold shutdown condition.
Description of Occu-- ence The "HPCI Inverter Failure" enhunciation was observed by thd operator. The inverter chassis Pase was found to be blown.
'Aro subsequent atte= pts to replace the fase resulted in blown fuses.
Designation of Amarent Cause of Occurrence A capacitor, cc=ponent C2, in the inverter filter network failed.
Analysis of Occu-rence At the time of the inverter failure, the reacter uns in cold shutdown; and the HPCI system was not repaired to be operable. The inverter failure caused no damacc to c~.y syste=s, cc ponents, or structures. There vere no adverse effects on the health or safety of the public as a result of this failure.
_ Corrective Action The inverter unit was replaced,by the unit 3 inverter.
Failure Data The capacitor was ---ufactured by Sprague Electric Cc=pary with the fo11ow1r.g nameplate:
Sprc6ue Pcuerlytic 36D 3000 uf 250V DC $7117L e
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