ML19337A630

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Interim Deficiency Rept Re Deficient Welds on Weir Wall Liner Plates.All Welds Made W/Incorrect Electrodes Will Be Removed & Replaced by Welds W/Proper Stainless Steel Electrode.Addl Corrective Action May Be Warranted
ML19337A630
Person / Time
Site: Phipps Bend  Tennessee Valley Authority icon.png
Issue date: 09/19/1980
From: Mills L
TENNESSEE VALLEY AUTHORITY
To: James O'Reilly
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
References
10CFR-050.55E, 10CFR-50.55E, NCR-PBNP-135, NUDOCS 8009290355
Download: ML19337A630 (2)


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c TENNESSEE VALLEY AUTHORITY CHATTANOOGA. TENNESSEE 374ot 400 Chestnut Street Tower II September 19, 1980 Mr. James P. O'Reilly, Director Office of Inspection and Enforcement U.S. Nuclear Regulatory Commission Region II - Suite 3100 101 Marietta Street Atlanta, Georgia 30303

Dear Mr. O'Reilly:

PHIPPS BEND NUCLEAR PLANT UNITS 1 AND 2 - REPORTABLE DEFICIENCY -

DEFICIENT WELDS ON WEIR WALL LINER PLATES (NCR PBNP 135)

Initial notification of the subject deficiency was made to NRC-0IE, Region II, Inspector R. W. Wright on August 20, 1980. In compliance with paragraph 50.55(e) of 10 CFR Part 50, enclosed is the first interim report of the subject deficiency. TVA anticipates transmitting the next report on or before November 24, 1980. If you have any questions, please call Jim Domer at FTS 857-2014.

Very truly yours, TENNESSEE VALLEY AUTHORITY

. . Mills, Man ger Nuclear Regulation and Safety Enclosure ec: Mr. Victor Stello, Director Office of Inspection and Enforcement U.S. Nuclear Regulatory Commission Washington, DC 20555 ,

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1 73'o/f 8009290 355 n Equal Opportunity Emptover g e S'l I i

a ENCLOSURE PHIPPS BEND NUCLEAR PLANT UNITS 1 AND 2 DEFICIENT WELDS ON WEIR WALL LINER PLATE 10 CFR PART 50.55(e)

NCR PBNP 135 REPORT NO. 1 (INTERIM)

On August 20, 1980, TVA informed NRC-OIE, Region II, Inspector R. W.

Wright of a potentially reportable condition under 10 CFR Part 50.55(e) regarding deficient welds on the weir wall liner plates.

This structure was fabricated by Stellar Manufacturing Company, Collingswood, New Jersey. This is the first interim report on this condition. TVA anticipates transmitting the next report on or before November 24, 1980.

Description of Deficiency The weir wall liner plates designed for Phipps Bend Nuclear Plant have been shipped to the site. These piates exhibit rejectable welding per the inspection criteria established in section III of the ASME Code. Additionally, some carbon steel angles were welded to the stainless steel liner plates using carbon steel welding electrodes. This is contrary to ASME III Code requirements and C. F. Braun Specification 300-11.

Corrective Action All welds made with the incorrect electrodes will be removed and the welds will be made with the proper stainless steel electrode.

TVA and GE/C. F. Braun are evaluating all other deficient welds to determine what additional enrrective action is required.

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