ML19320B480
| ML19320B480 | |
| Person / Time | |
|---|---|
| Site: | Fermi  |
| Issue date: | 07/02/1980 |
| From: | Fahrner W DETROIT EDISON CO. |
| To: | |
| References | |
| EF2-49-016, EF2-49-16, NUDOCS 8007140326 | |
| Download: ML19320B480 (1) | |
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200o second Avenue July 2, 1980 hh O',yhy.Q*"da22s EF2-49,016 s
Mr. James C. Keppler Regional Director Directorate of Regulatory Operations Fegion III U.S. Nuclear Regulatory Commission 799 Roosevelt Road Glen Ellyn, Illinois 60137 Subj ect:
10CFR50.55(e) on Damaged Penetrations at Enrico Fermi Nuclear Power Plant, Unit 2
Dear Mr. Keppler:
This letter is submitted as Detroit Edison's final report on the 10CFR50.
55(e) item on damaged penetration assemblies.
The problem was initially reported on August 24, 1979, in a telephone ca1.1 from Mr. H.A. Walker, of Detroit Edison's Quality Assurance Department, to Mr. R.C. Knop of NRC-Region III. At that time, it was determined that Pri-mary Containment Penetration X-17 was damaged.
Further investigation re-vealed that sixteen (16) Type I penetration assemblies, which were manufac-tured by Tube Turns, had been installed in a misaligned condition.
An engineering evaluation of the problem with the sixteen (16) assemblies has been completed and changes have been made to penetration X-17.
The assembly manufacturer, Tube Turns, has determined that the as-installed displacements should not reduce the bellows life below that which was re-quiced by the Design Specification for all Type I assemblies. The vendor's evaluation of the misalignment is contained in Report No. 71143-1, Revision 1, which is available for review at the Site.
In addition, each bellows has been sucessfully leak tested in accordance with vendor procedures. Therefore, all Type I penetration assemblies vill remain in their present locations, and further corrective action is not required.
If you have any questions regarding this matter, please contact Mr. H.A.
Walker, Supervisor - Construction Quality Assurance, s
Jincerely, W.J. Fahrner, Manager WJF/ HAW /lav O/7 cc:
Mr. Victor Stello, Jr., Director Office of Inspection and Enforcement g
Division of Reactor Inspection Programs j
U.S. Nuclear Regulatory Commission i
Washington D.C.
20555 R
Mr. Bruce Little, Resident Inspector Office of Inspection and Enforcement U.S. Nuclear Regulatory Commission Enrico Fermi 2 Construction Site Newport, Michigan 48166 3007'I40 Mb
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