ML19320D697

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Submits Reply to IE Bulletin 80-08 Re Examination of Containment Liner Penetration Welds.Review of Unit 1 Revealed Two Deficient Welds.Further Response Will Be Sent by 800810
ML19320D697
Person / Time
Site: Prairie Island  Xcel Energy icon.png
Issue date: 07/10/1980
From: Gilberts D
NORTHERN STATES POWER CO.
To: James Keppler
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
References
IEB-80-08, IEB-80-8, NUDOCS 8007220090
Download: ML19320D697 (1)


Text

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NSIB NORTHERN STATES POWER COMPANY MIN N E A PO Ll e. MIN N E 80TA 55409 July 10, 1980 UUL14 89)

Mr. James G. Keppler Director, Region III Office of Inspection and Enforcement U. S. Nuclear Regulatory Commission 799 Roosevelt Road Glen Ellyn, IL 60137

Dear Mr. Keppler:

PRAIRIE ISLAND NUCLEAR GENERATING PLANT Docket Nos. 50-282 and 50-306 In response to IE Bulletin No. 80-08, the following is offered:

A complete review of Unit 1 penetration welds revealed two welds with defi-ciencies. These are butt welds with backing rings which were ultrasonically tested but not radiographed. These welds will be radiographed at the refueling outage scheduled for August 1980.

Review of Unit 2 penetration welds is under way but may not be complete for about three weeks. Review to date of those penetration welds similar to the deficient Unit 1 welds shows that Unit 2 does not have the same deficiencies; and we expect to find no deficiencies in Unit 2.

A further response will be sent by August 10, 1980. The fact that our full response will be delayed was communicated to Mr. Tambling of your office on July 7.

Yours truly, h bv D. E. Gilberts Vice President Power Production cc:

Mr. G. Charnoff Director, Division of Reactor Construction Inspection U. S. Nuclear Regulatory Commission Washington, D. C.

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