ML19320C047
| ML19320C047 | |
| Person / Time | |
|---|---|
| Site: | Sequoyah  |
| Issue date: | 07/08/1980 |
| From: | Mills L TENNESSEE VALLEY AUTHORITY |
| To: | Schwencer A Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 8007150692 | |
| Download: ML19320C047 (2) | |
Text
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f &~c 400 Chestnut Street Tower II July 8, 1980 Director of Nuclear Reactor Regulation Attention:
Mr. A. Schwencer, Chief Licensing Oranch No. 2 Division of Licensing U.S. Nuclear Regulatory Commission Washington, DC 20555
Dear Mr. Schwencer:
In the Matter o; he f.pplication of
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Docket Ncs.
50-327 Tennessee Valley Authority
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50-328 In response to your letter to H. G. Parris dated June 23, 1980, we make the following recom.nendations regarding the Sequoyah Suclear Plant steam generators.
1.
Steam Generator insnection Ports TVA has previously reviewed the subject of inspection ports thoroughly and has taken the option to design and test a camera device for remote inspection of tube supports in lieu of additior.al ports. The camera inspection device will be inserted through the existing hand-holes located between the tubesheet and lower support plate in line with the tube lane.
Should the device prove unsuccessful or inadequate, TVA remains prepared to install the required inspection ports before startup, after the first refueling. The results of the inspection device should be available by March 1.1981.
2.
Row 1 Steam Generator Tubes TVA recognizes the potential for cracking in row 1, small bend radius tubes in the Sequoyah generators. We are prepared to commit to preforming whatever is necessary to comply with Westinghouse Electric
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Director of Nuclear Reactor Regulation July 8, 1980 Corporation's recommendations which result from tests being performed at the Trojan Nuclear Plant; however, any modifications which are committed to will follow our position of maintaining a maximum active tube surface margin.
If you have any questions, please get in touch with D. L. Lambert at extension 857-2581.
Very truly yours, TENNESSEE VALLEY AUTHORITY sy'
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I-L. M. Mills, Manager Nuclear Regulation and Safety