ML18283B463

Licensee Event Report Concerning the Thermocouple Wiring for TI-64-52, Drywell Temperature, That Was Found Open Inside the Drywell During Startup Testing

ML18283B463
Person / Time
Site:	Browns Ferry
Issue date:	10/13/1976
From:	Fox H Tennessee Valley Authority
To:	Moseley N NRC/IE, NRC/RGN-II
References
Download: ML18283B463 (6)

Text

NAG ronM 195 U.S. NUCLEAR REGULATORY C ...iillSSION DOCKFT NUMBER l2-TBI 50-296 FILE NUMBEA NRC DISTRIBUTION FoA PART 60 DOCKET MATERIAL INCIDENT REPORT TO: N.C. MOSELEY FROM: TENNESSEE VALLEY AUTHORITY DATE OF DOCUMENT CHATTANOOGA, TENN. 10-13-76 H.S. FOX DATE RECEIVED 10-18-76 HI.ETTE R 0 NOTOA IZ E D PROP INPUT FORM NUMBER OF COPIES AECEIVED ISIORIGINaL E UNCLASSIFIED Q COP V DESCRIPTION fNCLOSU AE LTR. TRANS THE FOLLOWING...... LICENSEE EVENT REPORT II 76-12, ON 9-14-76 CONCERNING THE THERMOCOUPLE WIRING FOR TI-64-5 DRYWELL TEMPERATURE, THAT WAS FOUND OPEN INSID THE DRYWELL DURING STARTUP TESTING.......

.( 1 CARBON SIGNED CY. RECEIVED)

( 2 PAGES)

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Il RQ X8)SZ86 M kfr~ Norman C kfoseley, Direc o U.S. Nuclear Regulatory Commi n Office of Irispection and Enforce Region IX gl 230 Ptnchtteo Stieet, IlH., 8th Ploot Atlanta, Georgia 30303 Dear Hr. IIoselay; TENtIESSEE VALLEY AUTHORITY - BROMNS PERRY NUCLEAR PLANT UNIT 3 <<

DOCKET NO+ 50<<296 - PACILXZY OPERATING LICENSE DPR-68 - REPORTABLE OCCURRENCE REPORT BPKO-50-296/7612 The enclosed report is to provide details concerning the thermocouple wiring for TI-64-'52, drywell temperature, that was found open inside the dryII'ell during startup testing. This report is submitted in accordance with Browne Perry Technical Specifications Section 6. This event occurred on Browne Ferry Nuclear P1ant unit 3.

Very truly yours, TENNESSEE VALLEY AUTHORITY H. S. Pox Director of Power Production Enclosure (3)

CC (Enclosure):

irector (3)

Office of Hanagement Information and Program Contro 1 IJ.S. Nuclear Regulatory Commission Hashington, D.C. 20555 Director (40)

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

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LICENSEE LCENSE EVFNT NAME LICENSE NUMBER TYPE TYPE

[oO~] rr r. g 3 0 0 0 0 0 0

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14 15 25 26 30 31 32 7

jot~icosi'r 8

CATEGORY 57 58 REPORT TYPE r.

59

'h IIEPORT SOURCE 60 0 5 DOCKET NUMBER 0 0(2 9 6 68 69 0 9 EVENt DATE l 4 7 6 74 75 REPORt DATE 80 EVENT DESCRIPTION

[003 'urin startu testin~ le wirin for TI-66-52 dr ell 7'9 thermocou tern era ur

~03 found o en inside the dr cell. BFRO-50-2 6 7612 7 89 80 7 8 9

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7 8 9 7 8 9 SYSTEM CODE CAUSE CODE COMPONENT CODE'RME CDMPDtJEtdt SUPPLIER COM ISO id Etc MANUFACTURER t

VIDIAtrON

[oa~j ~xo d r N S 'T U N G 0 8 0 7 8 9 10 11 12 17 43 44 47 48 CAUSE DESCRiPTION IGGI8 Thermal expansion during startup apparentl caused the loss of si~nal as a result of 7 8 9 7

Qo I8 9 the enetration connector not beinP full ti htened

~IO 7 89 METHOD OF 80 FACIUTY STATUS !I POVVER OTIIER STATUS DISCOVERY DISCOVERY DESCRIPTION jrar. g ~OO~O gnhcritical Routine review of plant instrument~s 7 8 9 10 12 13 44 45 46 80 FOAM OF ACTIVITY CONTENT RELEASEO OF',REI.EASE AMOUNT OF ACTIVITY LOCATION OF RFLEASE 7 8 9

'z 10 11 "44 45 '*' NA QO I

I 7 89 PERSOrNNEL EXPOSURES

'NUMIIER .

0 11

" TYPE i-.

12 i

OESCRiPTIDN'113j'~oo 13

'A PERSONNEL INJURIES NUMBER Dks RIPRON LoaooJ NA 7 89 11 12 OFFSITE CONSEQUENCES NA 7

89'OSS 90 OR OAMAI3E TO FACILiTY TYPE OESCRI>TiDN 7 8 9~ 10 80 PUSLICITY NA 7

8 ADDITIONAL FACTORS jiPj ~1he penetration connector was tightened.

NAViE'l 7 89 60

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