ML20004F464
| ML20004F464 | |
| Person / Time | |
|---|---|
| Site: | Fermi  |
| Issue date: | 06/16/1981 |
| From: | Colbert W DETROIT EDISON CO. |
| To: | Tedesco R Office of Nuclear Reactor Regulation |
| References | |
| EF2-53698, NUDOCS 8106180395 | |
| Download: ML20004F464 (2) | |
Text
{{#Wiki_filter:.. .w. 2000 Se%rd Ave 9ue Detr% M cNgan 48226 9 13) 237-8000 I June 16, 1981 EF2-53698 Mr. Robert L. Tedesco Assistant Director for Licensing Division of Licensing U.S. Nuclear Regulatory Commission Washington, E.C. 20555
Reference:
1. Enrico Fermi Atomic Power Plant, Unit 2 NRC Docket No. 50-541 2. Edison Letter EF2-53475, " Fermi 2 Containment Long Term Program - Plant Unique Analysis
- Schedule, "W. F. Colbert to R. L. Tedesco, dated June 8, 1981 Subj ect:
Fermi 2 Torus ibdification Program - Torus Attached Piping
Dear Mr. Tedesco:
The reconciliation of the piping attached to the torus requires consideration for the structural response of the suppression chamber due to the pool hydrodynamic loading conditions. The predicted response of the suppression chamber shell for each of the loads and loading combinations is an essential input to the piping analysis. { Edison is proceeding with a maximum effort to characterize the suppression chamber response, in accordance with the Long Term Program (LTP) criteria (Reference 2), so as to allow the_ piping ^ ' ~ ~ ~ i analysis to proceed at the earliest date possible. i In view of the scope of the program required to completely recon-cile the torus attached piping, the piogram schedule will extend beyond the Fermi 2 November 1982 fuel load date. However, Detroit Edison will perform a scoping analysis of selected torus attached piping systems,in sufficient detail to establish that safety margins of acceptablu magnitude exist,in order to allow interim plant oper-ation. This analysis will be submitted for NRC staff review no later than August 1, 1982. Also, Edison commits to have ell torus attached piping modifications, which are based on the LTP-PUA, installed prior to returning to power af ter the first refueling ( cycle. i \\ C) l 8106180 3'/5 f l l - =
.l # itemo t9: Mr. Rob:rt L.Teda':co Pcga 2 June 16,1981 Sincerely, [ I-W. F. Colbert Technical Director Enrico Femri 2 DFL/sim 4 e d ' =}}