ML19256E461
| ML19256E461 | |
| 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 7911070177 | |
| Download: ML19256E461 (2) | |
Text
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g NUCLEAR REGULATORY COMMISSION
.t REGION 11
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101 MARIETTA ST N.W., SUITE 3100 o
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- o AT L '.NTA, G EORGIA 30303 In Reply Refer To:
OCT 171979 RII;JPO Q36'4]
Alabama Power Company Attn:
F. L. Clayton Senior Vice President Post Office Box 2641 Birmingham, Alabama 35291 Gentlemen:
The enclosed Bulletin No. 79-13, Revision 2 is forwarded to you for infor-mation. No written response is required.
If you desire additional information regarding this matter, please contact this office.
Sincerely,
\\
C4 m
ames P. O'Reilly
' rector
Enclosures:
1.
IE Bulletin No. 79-13, Rev on 2.
Listing of IE Bulletins Issued in Last Six Months
'"3 222 7011070 /] 7 cp
DCT 171979 Alabama Power Company.
cc w/ encl:
A. R. Barton Executive Vice President Post Office Box 2641 Birmingham, Alabama 35291 H. O. Thrash Manager, Nuclear Generation Post Office Box 2641 Birmingham, Alabama 35291 C. Biddinger, Jr.
Manager-Corporate Quality Assurance Post Office Box 2641 Birmingham, Alabama 35291 W. G. Hairston, III Plant Manager Drawer 470 Ashford, Alabama 36312 R. E. Hollands, Jr.
QA Supervisor Post Office Box U Ashford, Alabama 36312
"3 223
SSINS:
6830 Accession No.:
7908220135 UNITED STATES NUCLEAR REGULATORY COTISSION OFFICE OF INSPECTION AFD 1 VFORCEMENT WASHINGTON, D.C.
2:1555 October 16, 1979 IE Bulletin No. 79-13 Revision 2 CRACKING IN FEEDWATER SYSTEM PIPING Description of Circumstances:
This 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 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 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 indi:ations 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 DWR licensees by the Office of Nuclear Reactor Regulation which informed licensees of the D. C. Cook failures and requested specific information on feedwater syste3 design, fabrication, inspection 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 outa2es to immediately conduct volumetric examination of certain feedwater piping welda.
As a re ult 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 ra<'.iography showed crack indications in similar locations at their H. B.
Robinson Unit 2.
Duquesne Power and Light confirmed radiography has shown cracking in their B to-vessel nozzle weld. Public Service El June 20, 1979 that Salem Unit 1 also has DUPLICATE DOCUMENT Service ecmpany decided on June 20, 1979 weld which contained questionable indicat Entire document previously As of June 22, 1979 and since May 25, 197 inspected the feedwater nozzle-to pipe we entered into system under:
ANO f 1 no No. of pages: / NOTE: R1 and R2 indicates lines revis}}