ML19350A210

Part 21 Rept U-27 Re Loose Bushings in Bergen-Patterson Sway Struts,Initially Reported 810130.Generic Rept Will Be Submitted by Snupps on Behalf of Util & Union Electric Co. Final Rept Will Be Issued by 810601

ML19350A210
Person / Time
Site:	Callaway
Issue date:	03/02/1981
From:	Bryan J UNION ELECTRIC CO.
To:	James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
References
REF-PT21-81-371-000 10CFR-050.55E, 10CFR-50.55E, PT21-81-371, PT21-81-371-000, U-27, ULNRC-419, NUDOCS 8103130040
Download: ML19350A210 (2)

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Mr. James G. Keppler, Director US Nuclear Regulatory Commission Region III 799 Roosevelt Road Glen Ellyn, IL 60137 ULNRC- 419

Dear Mr. Keppler:

INTERIM 10CFR50. 55 (e) /10CFR21 Report No. U-27 CALLAWAY PLANT C'JTT .

On January 30, 1981, Mr. H. Wescott of Region III was given verbal notification of a significant deficiency regarding loose bushings in Bergen-Paterson sway struts. Of the eleven (11) '

loose bushings found, there was a potential for five (5) of these bushings to become completely disengaged from the sway strut paddle end. A similar problem involving Corner & Lada Co. has already been reported under 10CFR50.55(e) criteria because of the potential to overstress a piping system if the bushings were to beccme ecmpletely disengaged during a seismic event. We are ad-vised thar recent inspections at the Wolf Creek site have identified

• similar difficulties with some of the Bergen-Paterson furnished sway struts at that site. These inspecticn findings were also reported to the NRC as a potential significant deficiency dnder 10CFR50.55(e) criteria by Kansas Gas & Electric.

Further investigations are being undertaken in conjunction with Kansas Gas and Electric to determine the cause of this diffi-culty and to develop a meaningful plan of corrective action. Ap-plicabiliry to sway struts furnished to Callaway Site by ITT-Grinnell is also being considered. Inasmuch as these problems are common to both SNUPPS Sites, a generic report involving the Bergen-Paterson units will be' submitted by SNUPPS on behalf of both Kansas Gas &

Electric Company and Union Electric Company. We anticipate a final report being issued to the NRC on or before June 1, 1981.

ferf)trulyyours,

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Iohn K. Bryan (

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RWD/lli cc: J. Konklin,; Region III B. H. Grier, Region I .

Victor Stello, Jr., Director I&EA ' ,

W. A. Hansen, NRC Resident Inspection, Callaway Plant Missouri Public' Service Commission j .....--