ML20132E403

Discusses Suspect Bolting at Plant,Per Bulletin 92-004. Total Scope of Boltingissue Has Not Been Completely Identified,Although Suspect Bolts Have Been Found in Listed Components

ML20132E403
Person / Time
Site:	LaSalle
Issue date:	12/11/1996
From:	Subalusky W COMMONWEALTH EDISON CO.
To:	Beach A NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
References
IEB-92-004, IEB-92-4, NUDOCS 9612230274
Download: ML20132E403 (2)

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December 11,1996 Mr. A. B. Beach United States Nuclear Regulatory Commission Regional Administrator - Region ill 801 Warrenville Road Lisle, Illinois 60532

Subject:

Suspect Bolting at LaSalle County Station

Reference:

ENS Notification, December 10,1996 We submitted a courtesy (voluntary) ENS notification on December 10,1996, regarding suspect bolting at LaSalle Station.

Although we have not yet identified any inoperable equipment, we made j

this call because of the possible widespread impact of finding suspect i

bolting at LaSalle. We have found suspect fasteners, as described in DOE bulletin number 92-4 dated August 1992, in both our warehouse and installed in the plant.

The total scope of the botting issue has not been completely identified, although suspect bolts have been found in the following components:

Diesel Generators Non-Pressure Boundary bolting on various air Operated Valves Conduit Supports in the DC electrical system Switchgear panel bolting Several pressure switch and transmitter mounting bolts We have performed initial testing on approximately 70 bolts and no  !

inoperable equipment has been identified.

We have notified the Resident inspectors of this issue and will keep them informed of our progress as we continue our investigation.

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If there are any questions or comments conceming this letter, please refer them to me at (815) 357-6761, extension 3600.

Respectfully,

'{Q% . _ ~

W. T. Subalus Site Vice Presi ~ ent i I

LaSalle County Station -

cc: M. P. Huber, NRC Senior Resident inspector - LaSalle C. H. Mathews, IDNS Resident inspector - LaSalle D. M. Skay, Project Manager - NRR - LaSalle F. Niziolek, Office of Nuclear Facility Safety - IDNS D D - Licensing (Hardcopy: Electronic: )

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