ML20087L333
| ML20087L333 | |
| Person / Time | |
|---|---|
| Site: | Point Beach  |
| Issue date: | 06/13/1974 |
| From: | Burstein S WISCONSIN ELECTRIC POWER CO. |
| To: | Oleary J US ATOMIC ENERGY COMMISSION (AEC) |
| References | |
| NUDOCS 8403270147 | |
| Download: ML20087L333 (2) | |
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.y 231 WEST MICHIGAN, MILWAUKEE WISCONSIN 53201 June 13, 1974 Mr. John F. O' Leary, Director Directorate of Licensing U. S. Atomic Energy Commission Washington, D. C.
20545
Dear Mr. O' Leary:
DOCKET NO. 50-266 POINT BEACH NUCLEAR PLANT UNIT 1 "A" AND "B" STEAM GENERATOR EDDY CURRENT INSPECTION RESULTS This is to provide you with the result of recent in-spections of the Unit 1 steam generators at our Point Beach Nuclear Plant.
You will recall that this unit recently under-went a scheduled refueling during which an opportunity to test steam generator tubing was provided.
Although immediate re-ports of these rcsult arc not required by provisions of our Technical Specifications, recent experiences with steam genera-tors at other nuclear facilitics and the interest in this re-gard expressed by members of the regulatory staff prompt us to file this report at the present time for your information.
Unit 1 at Point Beach Nuclear Plant was shut down for its second refueling outage on April 4, 1974.
Prior to the planned eddy current testing of steam generator' tubes, a secon-dary-to-primary leak test at 800 psig was conducted on April 18, 1974, and no discernible leakage was found in either steam generator.
The oddy current test program commenced April 20, 1974, and was completed April 27, 1974.
A total of 1204 tubes were inspected in the "A" steam generator and 1016 in the "B" steam generator.
Only two tubes with significant defects were dis-covered.
In the "A" steam generator, a 75% defect from the outer diameter of the tube was measured at position Column 54, Row 29, approximately one inch above the tube plate on the hot leg side.
A secohd tube, this in "B" steam generator, was de-termined to have a 78% defect from the outer diameter of the tube at position Column 50, Row.25, approximately level with the
, ! (f tube plate on the hot leg side.
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