ML18142B880

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LER 1975-009-00 for R. E. Ginna, Pinhole Leak in Cap Attached to Magnetic Control Rod Drive Rod Travel Housing K-7
ML18142B880
Person / Time
Site: Ginna Constellation icon.png
Issue date: 04/22/1975
From: White L D
Rochester Gas & Electric Corp
To: O'Reilly J P
NRC/IE, NRC Region 1
References
LER 1975-009-00
Download: ML18142B880 (5)


Text

NRC Dlb.IBUTION FOR PART SO DOCKET.TERIAL (TEMPORARY FORM)CONTROL NO: FILE IHCXDEhf REPORT FILE CLASS James P.O'Reilly UNC LASS PROP INFO ORlG HONE INPUT FROM: Rochester Gas&Electric CS+QE OF DQC Rochester, N.Y.4-22-75 DATE R EC'D 4>>30-75 CC OTHER NO CYS REC'D LTR TWX RPT OTHER SENT AEC PDR xxxxxx SENT LOCAL PDR DOCKET NO: 50-244 DESCRIPTION:

Ltr..trans the following....

ENCLOSURES:

Abnorm.Occurr.ig 75-09, on'4-l0-75, concerning Pinhole X,eak in cap attached to Magnetic Control Rod Drive Rod Tracel Housing'-7

'.~..".PLANT NAME: RE Ginna g (40 cys.Encl;Rec')-';.-'OR ACTION/INFORMATION VCR 45-1-'75 BUTLER (L)W/Copies CLARK (L)W/Cooies~g~r'A!x<>l!i W/Copies KNIEL (L)W/Copies SCHWENCER (L)W/Copies STOLZ (L)W/Copies VA~S3~i i y'!-i W/Copies+PURPLE (L)'W(/Copies ZIEiViAf!IN (L)W/Copies DICKER{E)W/Copies~f~)P~i>>~IXIV IVr1!Vl'4 it J W/Copies YOUNGBLOOD (E)-W/Copies REGAN (E)W/Copies LEAR (L)W/Copies occ Lo W/Copies W/Copies INTERNAL DISTRIBUTION A/T IND.B RA ITf!lhN SALTZMAN MELTZ LIC ASST R.DIGGS (L)H.GEAR IN (L)E.GOULBQURNE (L)P.KREUTZER (E)J.LEE (L)M.MAIGRET{L)S.REED (E)M, SERVICE (L)S.SHEPPARD (I)M.SLATER (E): H.Sih'IITH (L)S.TEETS (L)G.WILLIAMS (F)V.WILSON (L)R.INGRAM (L)DENTON~G R IMES GA ViiV I L L KASTNE R BALLARD SPANGLER G FfCE TECH REVIEW~SCHROEDE R OGC, ROOfvl P-506A Ph,'iACCARY GOSSI CK/S I AF F KNIGHT~CASE PAWLICKI GIAMBUSSO SHAO BOYD""'~STE L LO MOOR E (L)~"~HOUSTON DEYOUNG (L)"-"~NOVAK SKOVI.IOLT (L)~ROSS GOLLER (L)(Ltr)~IPPOLITO P.COLLINS/TED ESCQ DEN ISE LONG REG OPR LAIN AS~FI f E K REGION (2)BENAROYA~.>'IX></~~

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'MME.ENVIRQ MULLC-R DICKER KN I G I-ITQN YOUNGBLQQD REGAN PROJECT LDR HAR LESS 1-P D R.SAN/LA/N Y 1-BRQQKHAVEN NAT LAB 1-G ULRIKSON ORVL 1-AGMED (RUTH GUSSfvIAN)

Rm B-127 GT J.D.RVNKLCS, Rm E-201 GT EXTERNAL DISTI<IBUTIQN

~1-LOCAL PDR Pi g'~1-TIC (ABERiVATHY)

(1)(2)(10)

-RATIONAL LABS~1-NSIC (BUCHANAN) 1-W.PENNINiGTO!V, Rm E-201 GT 1-ASLB 1-CONSULTANTS 1-Newton Anderson~N CWMAR K/B LUM C/AG BABI AN A-ACRS'f,;r TO LXC ASST~-~SEND 0."AY Tiki'M EZPOitTS ROCHESTER GAS LEON D.WHITE.JII VICE PIIL'SIDCNT

'cb)IJ='Q(q, I b~~Beg taterjr PItL.gI'e'yP AND ELECTRIC CORPO.OH o 89 EZg'II~YE UC ROCHESTER, H.Y.14649 T C 1.C P II 0 N C AIICA CONC TIII 5 F16.2700 Ol April 22, 1975 Q 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:

Abnormal Occurrence 75-09, Pinhole leak in cap attached to Magnetic Control Rod Drive Rod Travel Housing K-7 R.E.Ginna Nuclear Power Plant, Unit No.1 Docket No.50-244 I

Dear Mr.O'Reilly:

In accordance with Technical Specifications, Article 6.6.2a, the attached report of Abnormal Occurrence 75-09 is hereby submitted.

Two additional copies of this letter and the attachment are enclosed..Very truly yours, L.D.White, r.Attachment cc: Mr.Donald F.Knuth (40) 4

~e'A LICENSEE EVENT REPO CONTROL,.BLOCK: 1 UCEN SEC NAME N Y R E G 1 7 89 14 15 (PLEASE PAINT ALL REQUIRED IHFORI"IATIOM)

EVENT TYITE LICENSE TYPE , LICENSE NUMBER 0 0-0 0 0 0 0-0 0 4 1 1 1 1~01 25 26 30 31 32 REPORT REPORT CATEGORY TYPE SOURCE DOCKET NUMBER EVENT DATE REPORT DATE ggcCITT~MI T L 0 5 0-0 2 4 4 0 4 1 0 7 5 0 4 2 2 7 5 7 8 57 58 59 60 61 68'69 74 75 80 EVENT DESCRIPTION Jog Visual inspection of caps on CRD rod travel housings revealed a powdery deposit on 7 8 9 t003 the K-7 cap.Subsequent dye penetrant examinations revealed a pinhole leak in the 7 8 9 toa~]canopy section of the cap above the seal weld of the cap to the housing.The PORC 8 9 recommendation of replacement of the cap was carried out.(Abnormal Occurrence Qg 50-244 75-09.7 8 9 roag COMPONENT MANUFACTURER VIDIATION 1 2 0 N 47 48 7 8 9 Jog omega seal, the threads, and ultimately through a machining defect at the thinned 7 8 9~10 wall section of the cap.7 89 FACILITY STATUS 55 POWER Q~g 14~oo 0 7 8 9 10 12 13 FORM OF ACTIVITY COATENT RELEASEO OF RELEASE AMOUNT OF ACTIVITY t11g H z NA 7 8 9 10 11 PERSONNEL EXPOSURES NUMBER TYPE DESCRIPTION pig~oo 0 H NA 7 89 11 12 13 PERSONNEL INJURIES NUMBER DESCRIPTION

~~~~00 o NA 7 89 11 12 METHOD OF OTHER STATUS DISCOVE'RY DISCOVERY DESCRIPTION NA b visual and dye penetrant test 44 45 46 LOCATION OF RELEASE NA 44 45 7 8 9 PNME SYSTEM CAUSE COMPONENT CODE CODE COMPONENT CODE SUPPUER[oa7]~CA 2 C CN R 0 D~N 7 8 9 10 11 12 17 43 44 CAUSE DESCRIPTION

[oas]A arentl insufficient torque down of cap permitted path of borated water up through 80 80 80 80 80 80 80 80 80 OFFSITE CONSEQUENCES Q~g 7 8 9 LOSS OR DAMAGE TO FACILITY TYPE DESCRIPTION Q~g H 7 89 10 PUBLICITY Q/'89 ADDITIONAL FACTORS Q~g 7 89[<is]NA NA NA 80 80 7 89 Charles E.Platt PHONE 5 5 4 5 l 80 GPO ee1.eeT g C+*l , U