ML18283B459

Licensee Event Report Concerning the RCIC That Failed During a Surveillance Test to Control Speed Because of a Broken Wire to the Magnetic Speed Sensor in the Governor Control Circuit

ML18283B459
Person / Time
Site:	Browns Ferry
Issue date:	10/18/1976
From:	Fox H Tennessee Valley Authority
To:	Moseley N NRC/IE, NRC/RGN-II
References
Download: ML18283B459 (6)

Text

NBC FoAM 195 U .S. NUCI EAA REGULATORY MISSION DOCKET NUMOEA I2.76 I 50-296 ~<5:lILE NUMOEA NRC DISTRIBUTION FoA PART 50 DOCKET MATERIAL INCIDENT REPORT'r.

FROM: DATE OF DOCUMENT Tennessee Valley Aughority 10/18/76 Norman C. Moseley Chattanooga, Tennessee DATE RECEIVED H. S. Fox 10/29/76

'ALETTE A C3 NOTOR IZ E D PROP INPUT FORM NUMBER OF COPIES RECEIVED

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+ORIGINAL UNCLASSIFIED One QCOPY signed'tr.

DESCAIPTION j ENCLOSURE trans the following: Licensee Event Report (RO 50-296/7611) on 10/1/76 concerning RCIC failing to control I

I speed because of a. broken wire to the magnetic

• s'peed sensor in the governor control circuit.

ACKNOWLEDGED. I

'O C

NOT H,ZMOVE PLANT NAME NOTE: IF PERSONNEL EXPOSURE IS INVOLVED SEND DIRECTLY'O KREGER/J .COLLINS Brown Ferry Unit f53 FOR ACTION/INFORMATION 11 2 76 RJL BRANCH CHIEF: Kniel W CYS FOR ACTION LIC..ASST.: Lee W S ACRS CYS S INTERNAL'IST RI BUTION REG FILE NRC PDR I-It: E 2 KEPC" 8GHRGEDER IPPOLITO HOUSTON NOVAK CHECK GRIMES CASE 'ANAUER TEDESCO MACCARY EISENHUT BAER SHAO VOLLMW HJNCH KREGER J. COLLINS EXTERNAL OISTRIDUTION CONTROL NUMOE R LPDR: Athens Ala.

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~q1.UTIQy TENNESgL~ VALLEY AUTHORITY

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/ ghee October 18, 1976 ilIIS~

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Mr. Norman C. Moseley, Director 1 U.S. Nuclear Regulatory Commission Office of Inspection and Enforcement Region II 230 Peachtree Street, NW., 8th Floor Atlanta, Georgia 30303 TENNESSEE VALLEY AUTHORITY

-

- BROWNS PERRY NUCLEAR PLANT UNIT 3-DOCKET NO. 50-296 FACILITY OPERATING LICENSE DPR-68 REPORTABLE OCCURRENCE REPORT BFRO-50-296/7611 The enclosed report is to provide details concerning the RCIC that failed during a surveillance test to control speed because of a broken wire to the magnetic speed sensor in the governor control circuit. This report is submitted in accordance with Browns Ferry Technical Specifications Section 6. This event "occurred on Browns Ferry Nuclear Plant unit 3.

Very truly yours, TENNESSEE VALLEY AUTHORITY Ol +gg8+

H. S. Pox Director of Power Production 6 c<~~ct'.>~+co11111~~@

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CC (Enclosure):

Director (3)

Office of Management Informat and Program Control U.S. Nuclear Regulatory Commis on Washington, D.C. 20555

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Office of Inspection and Enforcement U.S. Nuclear Regulatory Commission Washington, D.C. 20555 An Equal Opportunity Employer

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LICENSEE EVENT REPORT CONTROL 8I,OCK: fP wE PRINT ALI REOUIREO INFORFe1ATIQN)

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LICENSES LICENSE EVENT NAtAE LICENSE NUMBER TYPE TYPE Jog A' R R F 3 0 0 0 0 l LnLd

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7 89 14 15 25 26 30 31 32 REPQRT REPORT CATEGORY TYPE SOURCE OOCKET NUMBER EVENT OATE REPORT OA'TE

~01 CGM'T I 7 8 57 58 59 60 61 68,69 74 75 80

'VENT OESCRIPTIOiN Durin a surveillance test RCIC failed to control s eed because of a b ke

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a netic stew we s eed sensor in the c 60 80 8 9 7 8 9 PRE E 80 S wSTE!A CAUSE COtAPQtlEttT P stat

" '"E 'OOS COMPONENT CQQE SUP PUM M~aUFA VQLATiott LccEJ R it E tc IF 0 R 2 ~l 9 10 11 12 17 47 48 CAUSE 0"SCRIPTION I The flexible conduit connection to the R e e' 7 8 Ltob e 80I 7 8 9 era FAC'UTY METHQO OF STATUS POWER OTHER STATUS OISCOVERY OISCOVERY OESCRIPTIQta 7 -8 9 Loaoj 10 12 13 44 45 46 FORhl GF ACTIVITY COiNTENT

~ 'E'EASEO OF REI.EASE AMOUNT OF ACTIVITY LOCAT;ON CF RE EASE

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7 8 9 10 11 44 45 err L E"" O~.'NEI. EXPOS JRES

,Y QESCRPTlC "l col ~OJ LJ aiTA I 8 9 I1 12 13 PERSONNEL INJURIES NUVIBER OESCRlPTIOi I La.ba LoJ 7 8 OFFSITE CONSEQIJENCES NA 9 'I lOSS OR OAMAGE TO FACILITY

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Qi "8 [g I NA 7 8 9 10 PUBLICITY AOOITIONAL FACTORS Repairs were made acd RCIC e crated satistactcril I .wi I

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