ML20040A213
| ML20040A213 | |
| Person / Time | |
|---|---|
| Site: | Fermi  |
| Issue date: | 12/23/1981 |
| From: | Wells D DETROIT EDISON CO. |
| To: | James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| References | |
| 10CFR-050.55E, 10CFR-50.55E, EF2-55869, NUDOCS 8201200545 | |
| Download: ML20040A213 (2) | |
Text
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(313) 23/ 8000 December 23, 1981 J2'2--55869 l t c.
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Mr. Janes G. Keppler, Director 2
Region III U.S. Nuclear Regulatory Conmiselon
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ip g 799 Roosevelt Road Clen Ellyn, Illinois 60137
Subject:
Interim Report of 10CFR50.55(e) Item on Trhversing 'In-Core i
Probe System (#36)
Dear Mr. Keppler:
This additional interim report on the Transversing In--Core Probe System problem has been prepered to provide you with the current status of this problem.
The item was origin d ly reported to Mr. R. Knop of NRC-Region III by Detroit Edison's Mr. fl.A. Walker, Supervisor Constniction Quality Assur-ance on December 29, 1980.
At that tire, Engineering investigation indicated that the transversing in-core probe instnment tubing is possibly deficient.
This determina-tion was made by Project Design and Field Engineering while doing a design analysis of the thermal moverunts associated with the priant'f containment liner during a loss of coolant accident (IOCA).
The Detroit Edison Engineering Research Departnent mocked up the existing design and performed tests based on the thermal movenent associated with a IOCA.
These tests have been ecupleted and appear to provide a basis for acceptance / verification of the existing design.
A final report on this item should be sent to you on or before Febnlary 15, 1982. If you have questions concerning this matter, please contact Mr. fl. A. Walker, Supervisor-Construction Quality Assurance.
Very truly yours, DAW /IIAW/pn i
i 8201200545 811223 DAN 1 l
PDR ADOCK 05000341 S
PDR Zory
Mr. Jams G. Keppler, Director Decerber 23, 1981 Page Two EF2-55869 cc:
Mr. Victor Stello, Jr., Director Office of Inspection and Enforcement Division of Reactor Inspection Progrmrs U.S. Nuclear Regulatory Comtission Washington, D.C. 20555 Mr. Bruce Little, Resident Insinctor U.S. Nuclear Regulatory Ccanission Resident Insp2ctor's Office 6450 N. Dixie Highway Newport, Michigan 48166