ML19254F198
| ML19254F198 | |
| Person / Time | |
|---|---|
| Site: | FitzPatrick  |
| Issue date: | 10/17/1979 |
| From: | Grier B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| To: | Leonard J POWER AUTHORITY OF THE STATE OF NEW YORK (NEW YORK |
| References | |
| NUDOCS 7911070318 | |
| Download: ML19254F198 (1) | |
Text
gfpa neat.,9[0, y n-v UNITED STATES ss.
g NUCLEAR REGULATORY COMMISSION y
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$ ' 'E KING OF PRUSSIA, PENNSYLVANIA 19406 9 *****
October 17, 1979 Docket No. 50-333 Power Authority of the State of New York James A. FitzPatrick Nuclear Power Plant ATTN: Mr. J. D. Leonard Resident Manager P. O. Box 41 Lycoming, flew York 13093 Gentlemen:
The enclosed IE Bulletin 79-13, Revision 2, is ferwarded to you for information. No written response is required.
If you desire additional information regarding this matter, please contact this office.
Sincerely,
/
n oyce H. Grier
" Director
Enclosures:
1.
IE Bulletin No. 79-13 w/ Attachments 2.
Listing of IE Bulletins Issued in Last 6 Months cc w/ enc'is:
George T. Berry, Executive Director P. W. Lyon, Manager - fluclear Operations A. Klausmann, Director, Quality Assurance M. C. Cosgrove, Quality Assurance Supervisor J. F. Davis, Chairman, Safety Review Committee V. J. Cassan, Assistant General Counsel G fl. Wilverding, Licensing Supervisor CONTACT:
L. E. Tripp 337-5282 1289..
g 7 D11070 nd
'g ENCLOSURE 1 SSINS:
6830 Accession No.:
7908220135 UNITED STATES NUCLEAR REGULATORY COMMISSION OFFICE OF INSPECTION AND ENFORCEMENT WASHINGTON, D.C.
20555 October 17, 1979 IE Bulletin No. 79-13 Revision 2 Page 1 of 5 CRACKING IN FEEDWATER SYSTEM PIPING Description of Circumstances:
This revision to IE Bulletin No. 79-13 is based cn the results of the radiographic examinations and ongoing investigation of the subject problem to date since the initial Bulletin was issued. The revision reduces in scope the number and R2 extent of the piping system welds required to oc examined.
The requirements for reporting and action time frame remain unchanged.
On May 20, 1979, Indiana and Michigan Power Company notified the NRC of cracking in two feedwater lines at their D. C. Cook Unit 2 facility. The cracking was discovered following a shutdown on May 19 to investigate leakage inside contain-ment.
Leaking circumferential cracks were identified in the 16-inch feedwater elbows adjacent to two steam generator nozzle elbow welds. Subsequent radiographic examination revealed crack indications in all eight steam generator feedwater lines at this location on both Units 1 and 2.
On May 25, 1979, a letter was sent to all PWR licensees by the Office of Nuclear Reactor Regulation which informed licensees of the D. C. Cook failures and requested specific information on feedwater system design, fabrication, inspec-tion and operating histories.
To further explore the generic nature of the cracking problem, the Office of Inspection and Enforcement requested licensees of PWR plants in current outages to immediately conduct volumetric examination of certain feedwater piping welds.
As a result of these actions, several other licensees with Westinghouse steam generators reported crack indications.
Southern California Edison reported on June 5, 1979, that radiographic examination revealed indications of cracking in feedwater nozzle-to-pipe welds on two of three steam generators of San Onofre Unit 1.
On June 15, 1979, Carolina Power and Light reported that radiography showed crack ti.dications in similar locations at their H. B. Robinson Unit 2.
Duquesne Power and Light confirmed on June 18, 1979, that radiography has shown cracking in their Beaver Valley Unit I feedwater piping-to-vessel nozzle weld.
Public Service Electric and Gas Company reported on June 20, 1979 that Salem Unit 1 also has crack indications. W i s c ~ " " * " - " - -" ' - - - -- - -
June 20, 1979 to cut out a feedwater nc?
able indication, for metallurgical exami May 25, 1979 seven other PWR facilities pipe welds without finding cra' king indi DUPLICATE DOCUMENT NOTE:
R1 and R2 indicates lines revised Entire document previously entered into system under:{} 1 ANO No. of pages:}}