ML18142B894

LER 1975-003-00 for R. E. Ginna, Residual Heat Removal System Low Pressure Piping Excessive Leakage

ML18142B894
Person / Time
Site:	Ginna
Issue date:	02/06/1976
From:	White L Rochester Gas & Electric Corp
To:	O'Reilly J NRC/IE, NRC Region 1
References
LER 1975-003-00
Download: ML18142B894 (3)

Text

ROCHESTER GAS AHD ELECTRIC CORPORATION o S9 EAST AVEMUE, ROCHESTER, H.Y.14649 LEON O.WHITE.JR.VICE PRCSIDEtlT TCLEPHDNC AREA CODE T C 546 2700 February 6, 1976 Mr.James P.O'Reilly, Director U.S.Nuclear Regulatory Commission Office of Inspection and Enforcement Region I 631 Park Avenue King of Prussia, Pennsylvania 19406~<<Gttb'Q FPByg 1976~V o So l4ICLRAR REGlRAIORT COHUAISSIOH jp IAol I Sedloa

Subject:

Reportable Occurrence 76-03 (30-day report)Residual Heat Removal System low pressure piping excessive leakage.R.E.Ginna Nuclear Power Plant, Unit No.1~Docket No.50-244

Dear Mr.O'Reilly:

In accordance with Technical Specifications, Article 6.9.2b, the attached report of Reportable Occurrence 76-03, 30-day, is hereby submitted.

Two additional copies of this letter and'the attachment are enclosed.Very truly yours, L.D.@hi e, Jr.Attachment cc: Mr.John G.Davis (30)Mr.William G.McDonald (3), 1363 M~M~M~M r'~M~~~a f~~~M'M-v r rr~,(~~I~M l/rr'1MM M CONTROL BLOCK: 1 LICENSEE NAME Jog N Y R 9 G 1 0 7 89 14 15 REPORT REPORT CATEGORY TYPE SOURCE[oD71ooN'T

~L~L 7 8 57 58 59 60 Ll>ENBEE EVENT REPORT)TJLEASE RIIIIT ALL REQUIREO INFORMATION)

LICENSE NUMBER 0-0 0 0 0 0-0 0 4 25 26 LICENSE TYPE EVENT TYPE 1 1 1 1.~03 30 31 32 OOCKFT NUMBER EVENT DATE REPORT DATE 0 5 0-0 2 4 4 0 1 1 5 7 6 0 2 0 6 7 6 61 68 69 74 75 80 EVENT DESCRIPTION During routine 105 psig hydro test of residual heat removal (RHR)suction piping from~CU 7 8 9 80[QQ3]sump B to reactor coolant drain tank pumps, 2~85 gal./hr.was measured at"A" pump 80 7 89[os]suction flan e.Flan e bolts were ti htened and leakage was reduce'd to zero.7 8 9 Qpg (Reportable Occurrence 76-03, 30-day)7 8 9 Jog 7 89 PRME SYSTEM CAUSE COMPONENT CODE CODE COMPONENT CODE SUPPUER VGLATCN[os]~WG A P I P 9 X X~N E 9 9 9 Y 7 8 9 10 11 12 17 43 48 CAUSE DESCRIPTION toDB]Maintenance personnel had tightened flange bolts after maintenance for proper perform-COMPONENT MANUFACTURER 44 47 80 80 80 7 8 9 tOOI ance at normal o eratin 80 ressure, but had failed to do so sufficientl to withstand test 7 89 FA Cli ITY STATUS 69 POWER 9~OS O 7 8 9 10 12 13 FORM OF ACTIVITY COATENT 7 8 9.10 11 PERSONNEL EXPOSURES 7 8 9 11 12 13 PERSONNEl INJURIES NUMBER DESCRIPTION

[iia]~00 0 NA 7 89 11 12 METHOD OF DISCOVERY DISCOVERY DESCRIPTION OTHER STATUS NA NA b 44 45 46 80 LOCATION OF RELEASE AMOUNT OF ACTIVITY 44 45 80 80 80 OFFSITE CONSEQUENCES 7 8 9 80~10 pressure.The PORC recommended that maintenance (cont.'d.under Additional Factors)80 7 89 LOSS OR DAMAGE TO FACILITY TYPE-DESCRIPTION t116I H 7 89 10 PUBLICITY NA eo 80 7 89 ADDITIONAL FACTORS t11I (cont'd.from Cause Description) procedure used for inspection of pump would include 7 89~19 verification that flanges were properly tightened.

80 7 89 NAME: Charles U.Hartlieb 80.PH0NE.716 546-2700 ext.291-216 GPO 88 I 667