ML18143A497
| ML18143A497 | |
| Person / Time | |
|---|---|
| Site: | Ginna  |
| Issue date: | 02/19/1976 |
| From: | White L D Rochester Gas & Electric Corp |
| To: | O'Reilly J P NRC/IE, NRC Region 1 |
| References | |
| LER 1976-006-00 | |
| Download: ML18143A497 (6) | |
Text
TDOCKET NUMBER 50-244 v.s.NUCLEAR nI:-ovLATonv coMv!ssio I NRC Fonw 196~~TGI I p I'ILE NvMDER XNCXDENT REPORT NRC DISTR IDUTION I!on PART 60 l)OC I<ET I'stIAl'ER IAL ETTER Dn IG INAL Qcor v QNOTORIZED VNC I.ASS IF I E D MR J P O'Reilly DATE RECEIVED 2-24'-76 NUMBER Ol.COPIES RECEIVED L D WHITE, JR INPUT F pnop.30"RO~: ROCHESTER GAS 6 ELECTRIC CORP ROCHESTER, NY 2-19-76 DESCRIPTION LTR TRANS THE FOLLOWING...
~.......ENCLOSV RE LICENSEE.'EVENT REPORT 50'-244/76-OA (30-DAY)ON 2-6-76 RE MALFUNCTION OF UNDERVOLTAGE RELAY DURING SURVEILLANCE TEST...~....PLANT NA1IE;R.F!.GINNA 81~(Pr s'Jc g",Tgj'T Ef;," DO Nor/ggz~agoVp NOTE: XF PERSONNEL EXPOSURE XS XNVOLVED Sk:ND DIRECTLY TO KREGER/J.COLLXNS SAFETY BRANCH CHIEF: V.I3 CYS FOR ACTION LXC.ASST: W/CYS AORS CY 14 HOLDING ENT TO LA!=OR ACTIOi~l/I NFORViATION ENVXRO PE FT E NRC PDR I y.E~Q ZGR~<3)SCI!ROEDER/XPPOLXTO I K!JJ.AJ~O~NO"J/s)~jCHECK g jg)s.'S//S'.ilWP,HC~R XAS'J!UT~TI113 J3A!.'hl~FZ x'L'Di',QCD~MACCA~
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/AS INTERNAL D ISTRI BUTION I.PDI': LYONS, NY TX('SXC EXTEI.NWL LIISTRIBUTION ROCHESTER NY CONTROL NUMBER 1798 NRC FDIIM IGG I'2-7G) ew r' ROCHESTER GAS AND ELECTRIC CORPORATION o 89 EAST AVENUE, ROCHESTEI', N.Y.14649 LEON D.WHITE, JA.VLCC I nSSiOSI~r r slspHO Ms*scA coos res 546 2700 February'19, 1976 r" I ggg'"',)~"(B t'lie 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
Subject:
Reportable Occurrence 76-06 (30-day report), Malfunction of Undervoltage Relay during surveillance test 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 76-06, 30-day, is hereby submitted.
Two additional copies of this letter and the attachment are enclosed.Very truly yours, L.D.ate,, Jr.Attachment cc: Mr.John G.Davis (30)Mr.William G.McDonald (3)~cv pro PBJQg L A~+sr g j 0 l k r~t 4I~2 4 CONTROL BLOCK: 'CENSEE EVENT REPORT (PLEA'LT 1 PRINT ALL REQUIRED INFORMATION)
LICENSEE NAME~01 N Y R E G 1 14 15 7 89 LICFNSE EVENT LICENSE NUMBER TYPE TYPE 0 0-0 0 0 0 0-0 0 4 1 1 1 1~0032 25 26 30 31 32 REPORT REPORT CATEGORY TYPE SOURCE DOCKET NUMBER EVENT DATE REPORT DATE[oai]coM'r
~L~L 0 6 0-0 2 4 4 0 2 0 6 7 6 0 2 1 9 7 6 7 8 57 58 59 60 61 68 69 74 75 80 EVENT DESCRIPTION
.During surveillance testing of undervoltage relays, undervoltage device 274/11B failed 7 8 9~80 I to drop to de-energized position after undervoltage signal was simulated.
Redundant 7 89 80~04 relay 273/11B operated properly.Three previous occurrences of this type were reporte 7 8 9 I on 6/8/73, 12/13/74 and 8/5/75.All 4 u.v.relays were field stipped to clean 80 7 8 9 80 ppg plungers and retested satisfactorily.(Reportable Occurrence 50-244/76-06, 30-day)7 8 9 PRIE SYSTEM CAUSE COMPONENT CODE CODE COMPONENT CODE SUPPUER Ioo7I~IA E R E L A Y X~N 7 8 9 10 11 12 17 43 CAUSE DESCRIPTION tops]The u.v.relay plunger malfunction was due 80 COMPONENT MANUFACTURER W 1 2 0 N 44 47 48 to buildup of bushing deposits on plunger 7 8 9 80~10 type relays'for this application have been tested for (cont'd.under Additional Factors)80 7 89 FACILVii'TATUS
%POWER Q~g N~oo o NA 7 8 9 10 12 13 FORM OF ACTIVITY COATENT RELEASEO OF RELEASE AMOUNT OF ACTIVITY 1 2 8 K NA 7 8 9 10 11 PERSONNEL EXPOSURES NUMBER TYPE DESCRIPTION
~2~OO 0 E NA 7 89 11 12 13 PERS'ONNEL IN JURIES NUMBER DESCRIPTION
~00 0 NA 7'89 11 12 METHOD OF DISCOVERY DISCOVERY DESCRIPTION OTHER STATUS b NA 5 46 80 LOCATION OF RELEASE 44 45 80 80 80 OFFSITE CONSEQUENCES NA.7 89 80~09 shaft.The device is a Westinghouse type SV 75-150V ac undervoltage relay.New 7 8 9 LOSS OR DAMAGE TO FACILITY TYPE DESCRIPTION s 7 89 10 PUBLICITY 80 80 7 89 80 , ADDITIONAL FACTORS Q~g (cont'd.from Cause Description) reliability and duly approved for installation during 7 89~19 the present refueling outage.7 89 Dennis Gent NAME 80 80 PHONE.716/546-2700, ext.291-216 Gf'0 082~0 67 v l'l