ML18142B888

LER 1975-001-00 for R. E. Ginna, Drop of Two Control Rods

ML18142B888
Person / Time
Site:	Ginna
Issue date:	03/17/1975
From:	White L D Rochester Gas & Electric Corp
To:	O'Reilly J P NRC/IE, NRC Region 1
References
LER 1975-001-00
Download: ML18142B888 (4)

Text

NRC DÃRIBUTION FOR PART 50 DOCKET TERIAL (TEMPORARY FORM)CO FILE INCIDENT REPORT FILE F ROM: Rochester Gas 6 Elec.Co Roches ter, No Y, L.D.White 3-17-75 3-24-7 DATE OF DOC DATE REC'D LTR TWX RPT OTHER TO: J,P.O'Reilly ORIG None CC OTHER SENT AEC PDR SENT LOCAI PDR XXX CLASS UNCLASS'ROPINFO XX D ESC R I PTI ON: INPUT NO CYS REC'D 30 ENCLOSURES:

DOCKET NO: 50-244 Ltr.reporting abnormal occurr.8 75-01 trans the'following.

~.Abnormal Occurr.concerning drop of two control rods.,~PLANT NAME: RE Ginna 81 FOR ACTION/INFORMATION VCR 3-24-75 BUTLER (L)W/Copies CLARK (L)W/Copies W/Copies KNIEL (L)W/Copies SCHWENCER (L)W/Copies STOLZ (L)W/Copies~~a~~.~~~i~~I LL 5%II I~I~~~W/Copies~PURPLE (L)W/j Copies REGAN (E)W/Copies LEAR (0 W/Copies SPEi c W/Copies ZIEMANN (L)W/Copies DICKER (E)W/Copies I/O~~WI IM 1%~It I V I il~I w re~i g e u i~s W/Copies YOUNGBLOOD (E)'/Copies W/Copies INTERNAL DISTRIBUTION FILE TECH REVIEW~NB~SCHROEDER OGC, ROOM P-506A MACCARY GOSSICK/STAFF KNIGHT~CASE PAWLI CK I G I AM BUSSO SHAO BOYD'"'~STE LLO MOORE (L)>"" HOUSTON DEYOUNG (L)""~NOVAK SKOVHOLT (L)~ROSS GOLLER (L)(Ltr)~IPPOLITO P.COLLINS TEDESCO DENISE LONG REG OPR LAI NAS~F I LE 5.R EG ION (2)BE NA ROYA~T.R.WILSON(3)~VOLLMER STEELE DENTON~x-"GR IMES GAMMI LL KASTNER BALLAR0 SPANGLER LI C ASST R.DIGGS (L)H.GEARIN (L)E.GOULBOURNE (L)P.KREUTZER (E)J.LEE (L)M.MAIGRET (L)S.REED(E)M.SERVICE (L)~S.SHEPPARD (L)M.SLATER (E)H.SMITH (L)S.TEETS (L)G.WILLIAMS (E)V.WILSON (L)R.INGRAM (L)ENVI RO MULLER DICKER KNIG HTON YOUNG 8 LOOD REGAN PROJECT LDR HAR LESS EXTERNAL DISTRIBUTION A/T IND~BRAITMAN SALTZMAN ME LTZ PLANS MCDONALD CHAPMAN DUBE (Ltr)E.COUPE PETERSON HARTFIELD (2)w KLFCKER EISENHUT Wl G G I N TON~F.WILLIAMS~IIA~1-LOCAL PDR~y~N.Y.&Rochester N.Y~~1-TIC (ABERNATHY)

(1)(2)(10)

-NATIONAL LABS~1-NSI C (BUCHANAN) 1-W.PENNINGTON, Rm E-201 GT 1-ASLB 1-CONSULTANTS 1.-Newton Anderson NEWMAR K/0 LUME/AG BAB I AN<<5-ACRS SEKT TO LIC ASST~: SEND ONLY TEN DAY REPORTS 1-PD R-SAN/LA/N Y 1-BROOKHAVEN NAT LAB 1-G.ULRIKSON, ORNL 1-AGMED (RUTH GUSSMAN)Rm 8-127 GT 1-J.D.RUNKLES, Rm E-20'I~GT ROCHESTER GAS 0 i~\~Owl RKGUL'ATORY DOCK~~Fir,g COPy AICD ELECT P ORATION o 89 EAST AVENUE, ROCIIESTER, N.Y.I f649 10%4 LEON O.WKITF..JB VICC PRCSIDCNT 1CLCP~cONC iRCA COOC 7ie 546-2700 March 17, 1975 3"rj, v'o Mr.James P..O'.Reilly, Director U.S.Nuclear Regulatory Commission Office of Inspection and Enforcement

~octo oo p4p oooo Region I 631 Park Avenue King of Prussia, Pennsylvania 19406~i 6'gt"/(p),'-NAR84197 8~J gt"@I Sect(p

Subject:

Unusual Event 75-01, Drop of two control rods.R.E.Qinna Nuclear Power Plant,'nit No.1 Docket No.50-244

Dear Mr.O'Reilly:

In accordance with Technical Specifications, Article-6.6.2b, the attached ,report of Unusual Event 75-.01 is hereby submitted.

Two additional copies of this letter and the attachment are enclosed.Very truly yours, L.D.White, Jr.Attachment cc: Mr.Donald F.Knuth (30)

CONTROL BLOCK:LICENSEE EVENT REPCIRTg f PLEABE PRINY ALL REQUIRED IMFORMAYIOFII)

LICENSEE NAME QO1 N Y R E 7 89 UCENSE NUMBER G 1 0 0-0 0 0 0 0-0 14 15 EVENT TYPE LICENSE TYPE 25 26 30 31 32 0 4 1 1.1 1~03[OD1]CON'T 7 8 57 58 REPORT REPORT Lrd hJ DOCKET NUMBER 0 5 0-.0 2 4 4 61 68 EVENT DATE REPORT DATE 0 3 0 5 7 5 0 3 1 7 7 5 69 74 75 80 COMPONENT MAIilUFACTURER 44 7 8 LOCATION OF RELEASE NA 44 45 NA NA 80 OFFSITE CONSEQUENCES Q~g NA EVENT.DESCRIPTION Jog During core boring of floor above rod control cabinets, turbine runback to 70%occurred;7 8 9*80.I B'bank group 2'cc's GS&G9 were at bottom of core.With unit at hot shutdown, after 7 89 80 tQ inspection B bank was exercised 0-20 steps twice verifying operability.

QS&Q9 had 7 8 9 80 dropped-on a previous occasion of water'leak over cabinets.(Unusual Event 50-244/'8 9 80 Jog 7S-01).7 8 9 PRIE 80 SYSTEM CAUSE COMPONENT CODE CODE COMPONENT CODE SUPPUER'IOIATION~RB~F C 0 N R 0 D'N 1 2 0 N 7 8 9 10 11 12 17 43 47 48 CAUSE DESCRIPTION

[QD8]A water hose for boring machine broke at coupling.Water drained thru 2 new holes to 7 8 9 ,80 Qpg top of rod control cabinets, grounding out control power for stationary grippers for rcc's 7 8 9 80 Pro]QS&Q9, allowing them to drop.Core openings were covered;precautionary instruc-7 89 80 FACILITY METHOD OF STATUS%POWER OTHER STATUS DISCOVERY DISCOVERY DESCRIPTION E~io o NA a Rod Bottom Alarm 9 10 12 13~44 45 46 80 FORM OF ACTIVITY COATENT RELEASEO OF RELEASE AMOUNT OF ACTIVITY B H NA 7 8 9 , 10 11 80 PERSONNEL EXPOSURES NUMBER TYPE DESCRIPTION

.[ig.~00 0~Pi 7 89 11<<12 13 80 PERSONNEL INJURIES NUMBER DESCRIPTION

~~~~00 o 7 89 11 12 7 89 LOSS OR DAMAGE TO FACILITY TYPE DESCRIPTION Q~g NA 7 89 10 PUBLICITY NA 7 89 ADDITIDNAL FAcT0Rs Cause Description cont'd.+18 tions were given to job personnel working above rod control cabinets.7 89 Jig 7 89 80 80 80 80 80 NAME: Charles E.Platt PRONE.3 15 524 535 1 GPO 8$1