ML18142B895

LER 1975-013-00 for R. E. Ginna, 30 Day, B Steam Generator Tube Degradation

ML18142B895
Person / Time
Site:	Ginna
Issue date:	01/26/1976
From:	White L Rochester Gas & Electric Corp
To:	O'Reilly J NRC/IE, NRC Region 1
References
LER 1975-013-00
Download: ML18142B895 (5)

Text

REPOKTAIILE/ABI'lO!!'g OCCUKKEKCEB/LIICII>FIPI'B iLTCEII;)

NRC DISTIl!DUTION FOR PART 50 DOCKET MATERIAL (TEMPORARY FORM)

CONTROI NO:=1O38 FII E INCIDENT FILE FROM:ROCHESTER GAS 6 ELEC CORP DATE REC'D LTR TWX RPT OTI-I E R ROCHESTER, NY 1-26-76 2-3-76 XXXX L D WHITE JR TO: ORIG CC OTHER SENT NRC PDR MR J P O'EILLY 1 SIGNED SEI~T LOCAL PDR <<XXX CLASS UNCLASS PROPINFO INPUT NO CYS REC'D DOCI<E1 NO:

XXXXXX 1 5O.-244 DESCRIPTION: ENiCLOSUR ES:

LTR TRANS THE X'OLLOWING..... LICENSEE EVENT REPORT RO 50-244/75-1'3 (30-DAY) ON 12<<29-75'RE, "B" STEAM GENERATOR TUBE DEGRADATION.... ~ ...: ~"

ACKNOWggDG@D PLANT NAME: R E GINNA UNIT 81, ...DO NOT REMOPFR FOR ACTIOi))I/INFC:.RfÃATION 2-4-76 RKB BRANCH CHIEF PURPL'E LIC. ASST. SHEPPARD W/16 cys ACRS IN TF R MAL D I STR I BUT ION REG FILE VOLE BZR/BUNCkl RC PDR YNEGER/J . COLLINS XlcRE --(2) 1'IlPC (3)

SCHRODER/IPPOLITO HOUSTON NOVm/CHECX GRIMES/SCIIWENCER CASE F. IlXLLXAMS HANAUER NOTE: 1F PERSONEL EXPOSURE IS INVOLVED TEDESCO/MACCARY SQND DIRECTLY TO 1~GER/J . COLLINS E1SENHUT BAER SHAO EXTEnNAL DISTR I BUTION LOCAL PDR LYONS NY / ROCHESTER .NY TIC NSIC DISTRIBUTXON REVISED l.'-19-76 by D. CRUTCHFlELD, TECH REVIEW COORDINATOR

~ I I<< I t

IlJVITl<<'IIl I".4><<V,<ltd/

ROCHESTER GAS AND ELECTRIC CORPOPATlO]f o 89 FAST AVENUE, ROCHESTER, t(.Y. l4649 VICE PAESIOENT'ELERIIONE LEON O. WfllTE. JR.

AREA COOt 7IO 546.2700 January 26, 1976

'R6gnfBfpfy Doff(ef pjie Mr. James P. O'Reilly, Director U. S. Nuclear Regulatory Commission . ~a Office of Inspection and Enforcement Region I //

dgg 631 Park Avenue o King of Pru ssia, Pennsylvania 19406

Subject:

Reportable Occurrence 75-13, 30 day, "B" Steam Generator tube degradation.

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 75-13, 30 day, is hereby submitted. Two additional copies of this letter and the attachment are enclosed.

Very truly yours, L. D. Whi e, Jr.

Attachment cc: Mr. Donald F. Knuth (30)

Mr. William G. McDonald (3) 1976~ 9

1t

%e N

'I

I L+eNSEE EVENT REPORT CONTROL BLOCK: [PLEASE PRINT ALL RCQUIREO IMFDRIVIATIOQ)

LICENSEE LICENSE EVENT NAME LICENSE NUMBER TYPE TYPE N Y R E G 1 0 0 0 0 0 0 0 0 0 4 1 1 1 1 L0oo3~i

~

7 89 14 15 - 25 26 30 31 32 REPORT 'EPORT CATEGORY TYPE SOURCE DOCKET NUMBER EVENT DATE 7

[0D1] coN'T 8 57 58 59 60 0 5 0 0 2 4 4 L1II 222 9 7 5 0 1 REPORT DATE 2 6 7 6 61 68 69 74 75 80 EVENT DESCRIPTION

[oO~] During normal operation blowdown isolation occurred. Anal sis of "B" SG blowdown 7, 8 9 80

[QQ3] showed iodine activity. Eddy current (ec) testing located defect below the top of tube I

89 80

~04 sheet in leaking tube, and ec testing 57 tubes in the leak area showed 1 other tube with 7 8 9 80 56% defect at the top of the tube sheet. Both tubes were plugged. These defects were 8 9located on the-hot leg periphery, an area of no previou's problems, and is considered a80 Q~g random failure ort 7 8 9 PRME 80 SYSTEM CAUSE COMPONENT COMPONENT CODE CODE COMPONENT CODE SUPPUER MANUFACTURER VOLATION

[007I~CB 7 8 9 10 E H TEX C H ~N 1 2 0 N 11 12 17 43 44 47 48 CAUSE DESCRIPTION Qpg The random nature of this failure will be confirmed during scheduled ec test in 3/76 whe 7 8 9 Qpg it is planned to examine similar areas not previously tested. The steam generator is a 80 7 8 8 80

'~10 Westinghouse series 44, using inconel tubes size 0. 875 OD with 0 050 inch walls ~ ~

7 89 FACILITY METHOD OF STATUS POWER OTHER STATUS DISCOVERY DISCOVERY DESCRIPTION

@~g E ~10 0 NA c Rad monitor and blowdown sample 7 8 9 FORM OF 10 12 13 ~ 44 45 . 46 ana ysis. 80 ACTIVITY,COATENT

~

RELEASEO OF RELEASE AMOUNT OF ACTIVITY LOCATION OF RELEASE Q~g NA NA 7 8' 10 11 44 45 , 80 PERSONNEL EXPOSURES'UMBER TYPE DESCRIPTION

~3 ~00 0 E NA 7 89 11- 12 13 80 PERSONNEL INJURIES NUMBER DESCRIPTION

~4 ~oo o NA 7 89 11 12 80 OFFSITE CONSEQUENCES Q~g NA 7 8 9 80 LOSS OR DAMAGE TO FACILITY TYPE DESCRIPTION Q~g H NA 7 89 10 80 PUBLICITY 4 Press release was made.

7 89 80 ADDITIONAL FACTORS Qe]

7 89 80 7 89 80 I. F. Sweet/A. E. Curtis III PQQNE. 716/546-2700 ext. 2218 GPO 66T ~ 66T

W5

~

f

\