ML20005B003
| ML20005B003 | |
| Person / Time | |
|---|---|
| Site: | Fermi  |
| Issue date: | 06/29/1981 |
| From: | Wells D DETROIT EDISON CO. |
| To: | James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| References | |
| 10CFR-050.55E, 10CFR-50.55E, EF2-53562, NUDOCS 8107060200 | |
| Download: ML20005B003 (2) | |
Text
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Donald A. Wolts g
${[$ N I 2000 Second Avenue 31 3
June 29, 1981 EF2-53562 Mr. James G. Keppler, Director Region III U.S. Nuclear Regulatory Cmmission Glen Ellyn, Illinois 60137
Subject:
Interhn Report of 10CFR50.55(e) Item on Pipe Support Beam Attachments (Struts) (#33).
Dear Mr. Keppler:
The final report on the Pipe Support Beam Attachments (Stn.ts) cannot be subnitted to you by June 29, 1981, as scheduled. This additional interim report is to provide you with the current status of the evaluation of this problem.
The item was originally reported to Mr. P.A. Barrett of NRC Region III by Detroit Edison's Mr. H.A. Walker, Supervisor-Construction Quality Assurance, on November 13, 1980. At that time, Power Piping had noted problems in possible over-stresshg of pipe support beam attachments where the struts were installed off vertical position and subjected to a bending nament. Preliminary investigation indicated that approximately thirty (30' struts were involved at the Fermi 2 Construction Site.
All G IcVel I previously designed pipe supports were reviewed to deter-mine where the support beam attachments were used. In addition, the in-vestigation included a review to detcImine if a ncdification was required based on the revised load rating criterion for each support. The result of this investigation revealed that the subject attachments were used with an angle of loading lesc than 80 degrees frcxn the horizontal position on seven OA ILvel I pipe supports. All seven of these supports were found to be deficient and nust be nodified to eliminate the deficiency.
Power Piping is supplying the necessary replacement parts for the existing deficient support beam attachments, however, new parts have not been received as of this date.
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Mr. James G. Keppler June 29, 1981 Page W o EF2-53562 Another report on this item, either iterim or final, is scheduled to be sent to you on or before October 27, 1981. If you have any questions con-cerning this matter, please contact Mr. II.A. Walker, Supervisor-Construction Quality Assurance.
Very truly yours, 0
DAW / HAW /cp cc: Mr. Victor Stello, Jr., Director Office of Inspection and Enforcement Division of Reactor Inspection Programs I
U.S. Nuclear Regulatory Ca mission Washington, D.C. 20555 Mr. Bruce Little, Resident Inspector U.S. Nuclear Regulatory Cmmission Resident Inspectors Office 6450 North Dixie Highway Newport, Michigan 48166 i
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