ML19256E447
| ML19256E447 | |
| Person / Time | |
|---|---|
| Site: | Farley  |
| Issue date: | 10/17/1979 |
| From: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| To: | Clayton F ALABAMA POWER CO. |
| References | |
| NUDOCS 7911070113 | |
| Download: ML19256E447 (2) | |
Text
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[
- o, UNITED STATES NUCLEAR REGULATORY COMMISSION n
- E REGION 11 o
101 MARIETTA ST N.W SulTE 3100 Y4 g*
t.TLANTA. GEORGIA 30303 OCT 171979 In Reply Refer To:
RII:JPO Q4Q Alabama Power Company Attn:
F. L. Clayton Senior Vice President Post Office Box 2641 Birmingham, Alabama 35291 Gentlemen:
Enclcsed is IE Bulletin No. 79-13, Revision 2 which requires action by you with regard to your power reactor facility (ies).
Should you have any questions regarding this Bulletin or the actions required by you, please contact this office.
Sincerely, n
s
\\C mes P. O'Reilly D ector
Enclosures:
1.
IE Bulletin No. 79-13, Revision 2 w/ Attachments 2.
List of IE Bulletins Issued in Last Six Months 1 " 3 006 7911070)
007 ] 7 1979 Alabama Power Company.
cc w/ nel:
A. R. 3arton Executive Vice President Post Office Box 2641 Birmingham, Alabama 35291 J. T. Young Vice President-Production Post Office Box 2641 Birmingham, Alabama 35291 C. Biddinger, Jr.
Manager-Corporate Quality Assurance Post Office Box 2641 Birmingham, Alabama 35291 H. O. Thrash Manager-Nuclear Generation Post. Office Box 2641 Birmingham, Alabama 35291 H. G. Hairston, III Plant Manager Drawer 470 Ashford, Alabama 36312 R. E. Hollands, Jr.
QA Supervisor Post Office Box U Ashford, Alabama 36312 1' 3 007
SSINS:
6830 Accession No.:
7908220135 UNITED STATES NUCLEAR REGULATORY COMMISSION OFFICE OF INSPECTION AND ENFORCEMENT WASHINGTON, D.C.
20555 October 16, 1979 IE Bulletin No. 79-13 Revision 2 CRACKING IN FEEDWATER SYSTEM PIPING Description of Circumstances:
Thi. revision to IE Bulletin No. 79-13 is based on the results of the radio-graphic examinations and ongoing investigation of the subject problem to date since the initial Bulletin was issued. The revision reduces in scope the R2 number and extent of the piping system welds required to be examined. The requirements fcr 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 containment. 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 Nucleer Reactor Regulation which informed licensees of the D. C. Cook failures and requested specific informat.on on feedwater system design, fabrication, inspecuion and operating histories.
To further explore the generic nature of the cracking proble', the Office of Inspection and Enforcement requested
'censees of PWR plants in current outages to immediately conduct volumetric e aminatio2 of certain feeduter 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 '. On June 15, 1979, Carolina Power and Light reported that radiography showed crack indications in similar locations at their H. B.
Robinson Unit 2.
Duquesne Power and Light confirmed on June 18, 1979, that radingraphy has shown cracking in t to-vessel nozzle weld.
Public Serv' June 20, 1979 that Salem Unit 1 als Service compa g decided on June 20, DUPLICATE DOCUMENT weld which contained questionable in As of June 22, 1979 and since May 25 Entire document previously inspected the feedwater nozzle-to pi entered into system under:
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NOTE:
R1 and R2 indicates lines