ML20071M092
| ML20071M092 | |
| Person / Time | |
|---|---|
| Site: | Fermi  |
| Issue date: | 09/10/1982 |
| From: | Wells D DETROIT EDISON CO. |
| To: | James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| References | |
| 10CFR-050.55E, 10CFR-50.55E, EF2-59391, NUDOCS 8209240251 | |
| Download: ML20071M092 (2) | |
Text
.
d Donald A. Wells thnager QuaMy Assurance Detroit 2000 Se Edison m=cond Avenue Septenber 10, 1982 EF2-59391 Mr. James G. Keppler, Regional Administrator Region III U.S. Nuclear Regulatory Caumission 799 Roosevelt Road Glen Ellyn, Illinois 60137
Subject:
Final Report of 10CFR50.55(e) Item on Water Leak in Drywell Bellows Area (#70)
Dear Mr. Keppler:
This is Detroit Edison's final report on the water leak problem in the drywell bellows area. This problem was originally reporteri to Mr. P.
Pelke of NRC Region III by Detroit Edison's Mr. II.A.. Walker, Supervisor-Construction Quality Assurance, on June 4, 1982.
In performing the backflush prior to reactor pressure vessel (RPV) hydro-static testing, the reactor cavity had been flooded. Smetine later, water was detected running fran around drywell penetrations at lower levels. The water appeared to be leaking through the drywell bellows area between the drywell steel liner and the concrete, and flowing downward until it reached an opening to the outsida.
After incomplete seal welds in the Reactor Well had been located and repaired, the leakage was stopped. When the repairs wre completed, the Reactor Well was filled to continue flushing operations. During observation of the flush-ing operations, no flow was witnessed through the G41 (Fuel Pool Cooling and Cleaning System) drain line, and no leakage was observed through penetrations in the Biological Shield Wall.
The Reactor Well was still filled several days after the repairs. A survey of all areas where leaks had been detected was conducted. All the areas surveyed were dry.
If you have questions concerning this matter, please contact Mr. G.M. Trahey, Assistant Director-Project Quality Assurance.
Very truly yours,
- L e) -
f DAW /DF/cp i
/V B209240251 820910 PDR ADOCK 05000341 s
.-. ~. _,
=
o Mr. James G. I(eppler, Regional Administrator September 1, 1982 Page Two EF2-59391 1
4 cc: Mr. Richard DeYoung, Director Office of Inspection and Enforcement Division of Reactor Inspection Programs Washington, D.C. 20555 Mr. Bru Little, Resident Inspector U.S. Nuclear Regulatory Ccmnission 6450 North Dixie Highway Newport, Michigan 48166 i
f 4
I.
4 i
4 l
i l
t i
4 4
5 1
i i
i l
i
- -.. -... -...,.. -. -.. -, _....,. -. ~ ~ - -.. -. -,. -., -, _. -.. -.
-...,.