ML20084F666

Telecopy AO 50-244/78-08:on 730907,steam Flow Indicator FI-463 on Steam Generator 1A Failed Downscale.Caused by Failed Solder Connection on Flexure Wire Connection,Between Strain Gauge & Dp Cell Shaft Extension.Wire Soldered

ML20084F666
Person / Time
Site:	Ginna
Issue date:	09/10/1973
From:	Platt C ROCHESTER GAS & ELECTRIC CORP.
To:	James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20084F648	List: ML20084F646 ML20084F666
References
AO-50-244-73-08, AO-50-244-73-8, NUDOCS 8304210221
Download: ML20084F666 (2)

Text

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• P:ls ' ~ J.g JA:iES P. O'REI l +

l D1dECTORATE Of REGULATORY OPERATIO"S R EG 10'1 1 QMO

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i U. S. ATO:: IC E'!ERGY CO:DllSSION M l 631 P ARi;' AVE"UE i;I'!G OF FRUSSI A, PE'U1SYLV A';I A 19405 ,

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! DEAR MR. O 'REILI.Y: '

TRIS IS TO C0" FIRM Tl!E C0"VERSATION DETUEE'? CliARLES PLATT A'!D UALTER D AU':' ACi' ON S ATURDAY, SEPTE;1LER S, 1973 11 REG ARDS TO AN Ai!.NOIRi AL OCCURREN'CE 73-0 AT GI"'! A STATI0'1 I

i AT 134 5 0't FRIDAY, SEPTE'13ER 7, 1973, Tl'E STEA:1 FLOU I'!DICATOR FI-453 ( 1 A STE/UI GE'!ER ATOR ) FAILED DOU'1 SCALE To "0". T)(IS FLOUETER IS PART .0F Tile LOOP A LOGIC SCllE:iE FOR LOOP A MAI4 STEA:1 LI"E ISOLATI0". OPER ATIO"S IIDiEDI ATELY PLACED Tile PC-465A (llI. STEA:1 FLOU)

A"D FC-4G5D (llI llI STE A'.1 FLOU ) BISATABLES I" Tile TRIP MODE. I THIS i MODE, UITH A .2/.4 LOU TAVG SIG:! A1. PLUS A SAFETY I"JECTIO" SIG" AL, .i AI" STEA:: LI"E ISOLATJ0'! FOR LOOP A UGULD llAVE TA:(D! PLACE.

PORC ::ET SATURDAY c:0R'!1"G, SEPTE:' DER 8, 1973 A"D C01 CURRED THAT THERE. UAS 'to SAFETY PRoaLE:1 IMVOLVED I" OPERATIMC I'1 TllIS MODE.

TilEY DIRCCTED ITSTRUME1T AND CO'! TROL PERS0'! ELL TO M AKE A C0" TAI":iE"T E"TRY TO FI"D Tl!E CAlME OF TiiE FAILURE.- Tl'E I!!VESTIC ATION FOU"D TIIE CAUSE TO DE A SOLDER CO!ECTIo'1 (FLEXURE UIRE C0"1ECTION BETUEE" STRAI'!

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C AUCE A"D DP QELL Sli.. . _ , :SIO'! I'1 B ARTO'1 TR ASMITTER ) THAT IIAD FAI LED. '

Tile FLEXURE UIRE UAS SOLDERED TO TllE EXTE"SIO" AIDI 0F Tile DP SHAFT Tile R AS: LITTER U AS . REC ALIBR ATED A"D CllAN'?EL ARTT RESTIRED TI SERUVCE e

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l 1224 0' SATURDAY, SEPTEMBER S, 1973. k [, ,

VERY TRULY YOURS, .

-b , '< , xr CilARLES E. PLATT, SUPER I'!TE"DE'!T  : -

8304210221 730914 CI!!'i A STATI0 .. {DRADOCK 05000244

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. MEMO 110VTE SllP SH me about this. For ConCuffe . F0f action.

Form Al('.'#% I ret'. M as 1 1. I'J 4 7 ) A I ( M PJet. a nd rettsrn. For t f gnato f or laforrnation.

• IO (PfeMe and weist) INillALL W ELMARKS W Licensee: Rochester Gas & Electric Corp.

11. 19. Thornburg, oATE Docket No.: 50-244 Chief

• FSE.EB A0 73-8 Abnormal Occurrence:

TO (Narne and un.t) INail ALS PLMARKS RO: LIQ (5)

DR Central Files (1) oATE The attached report from the subject licensee is Regulatory Standards 3)

Dir. of Licensing (13 >

forwarded in acccrdance with no Manual Chanter 1000 thaTIALS REMARKS TO (Name and unst) f-RO Files L/ The action taken by the licensee is considered cATE appropriate. Followup will be performed during the next inspection as appropriate. Conies of FROM (Name and un:t) REMARKS .

the report have been forwarded to the PDR, Local 1 ' - ,N- ,kc. w

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PDR, NSIC, DTIE and State representatives. The A. 3. Davis, Senior Reactor Inspector, PW Section licensee will submit a 10 day written report to PHChE PICL , EATE 9/20/73 Licensing.

U5E OTHER SADE FOR ADDITION AL REMARKS C'ro : 19710 - 445 4* 7 o . ..

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