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. TCLEPHDNC VICE PRCSIDEtlT AREA CODE T C 546 2700 February 6, 1976

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Mr. James P. O'Reilly, Director FPByg 1976 ~

U. S. Nuclear Regulatory Commission Q V o So l4ICLRAR REGlRAIORT Office of Inspection and Enforcement COHUAISSIOH jp IAolI Sedloa Region I 631 Park Avenue King of Prussia, Pennsylvania 19406

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

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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),

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Ll>ENBEE EVENT REPORT CONTROL BLOCK: )TJLEASE RIIIIT ALL REQUIREO INFORMATION) 1 LICENSEE LICENSE EVENT NAME LICENSE NUMBER TYPE TYPE Jog N Y R 9 G 1 0 0 0 0 0 0 0 0 0 4 1 1 1 1 . ~03

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7 89 14 15 25 26 30 31 32 REPORT REPORT CATEGORY TYPE SOURCE OOCKFT NUMBER EVENT DATE REPORT DATE

[oD71ooN'T L ~L 0 5 0 0 2 4 4 0 1 1 5 7 6 0 2 0 6 7 6 7 8 57 58 59 60 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 sump B to reactor coolant drain tank pumps, 2 85 gal./hr. was measured at "A" pump

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7 89 80

[os] suction flan e. Flan e bolts were ti htened and leakage was reduce'd to zero.

7 8 9 80 Qpg (Reportable Occurrence 76-03, 30-day) 7 8 9 80 Jog 7 89 PRME 80 SYSTEM CAUSE COMPONENT COMPONENT CODE CODE COMPONENT CODE SUPPUER MANUFACTURER VGLATCN

[os] ~WG A P I P 9 X X ~N E 9 9 9 Y 7 8 9 10 11 12 17 43 44 47 48 CAUSE DESCRIPTION toDB] Maintenance personnel had tightened flange bolts after maintenance for proper perform-7 8 9 80 tOOI ance at normal o eratin ressure, but had failed to do so sufficientl to withstand test 7 8 9 80

~10 pressure. The PORC recommended that maintenance (cont.'d. under Additional Factors) 7 89 METHOD OF 80 FA Cli ITY STATUS 69 POWER OTHER STATUS DISCOVERY DISCOVERY DESCRIPTION 9 ~OS O NA b NA 7 8 9 10 12 13 44 45 46 80 FORM OF ACTIVITY COATENT AMOUNT OF ACTIVITY LOCATION OF RELEASE 7 8 9 . 10 11 44 45 80 PERSONNEL EXPOSURES 7 8 9 11 12 13 80 PERSONNEl INJURIES NUMBER DESCRIPTION

[iia] ~00 0 NA 7 89 11 12 80 OFFSITE CONSEQUENCES 7 89 eo LOSS OR DAMAGE TO FACILITY TYPE -

DESCRIPTION t116I H NA 7 89 10 80 PUBLICITY 7 89 80 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.

7 89 80 .

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