ML20010G307

Ro:Ie Bulletin 80-11 Analysis Determined That Listed Walls Would Be Overstressed During Seismic Event

ML20010G307
Person / Time
Site:	Davis Besse
Issue date:	08/31/1981
From:	Murray T TOLEDO EDISON CO.
To:	Mcgregor L NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML20010G297	List: ML20010G296 ML20010G303 ML20010G307
References
IEB-80-11, NUDOCS 8109150568
Download: ML20010G307 (1)

Text

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L. ) TOLEDO

'.ca EDISON TELEC0PY August 31, 1981 TO: U. S. Nuclear Regulatory Commission y

Office of Inspection and Enforcement Region III Attention: Mr. Leonard McGregor Reportable Finding Per '"echnical Specification 6.9.1.8.i The analysis of concrete masonry block walls required by NRC IE Bulletin 80-11 determined that during a seismic event, the wall to floor connection for wall 1068 and the top connection of walls 3016 and 3036 could become overstressed.

Additionally, wall 3026 which is edge supported by walls 3016 and 3036 could be affected 11 ws'.is 3016 and 3026 became unstable.

Wall 1068 is r shield wall separating Radioactive Equipment Storage Room #106 from Sampling Hood Room #106A, Elevation 545. Walls 3016, 3026, and 3036 separate passage 322 from Switch Room 324 Elevation 585. Under normal plant operating con-ditions, the wall connections have stresses within allowable limits.

This design is less conservative than assumed in the FSAR and is being reported under Technical Specification 6.9.1.8.i.

Luis Reyes, NRC Resident Inspector, was notified at 1430 hours0.0166 days <br />0.397 hours <br />0.00236 weeks <br />5.44115e-4 months <br /> on August 31, 1981.

D Terry D. Murray TELECOPY h eceived Station Superintendent Verified Receipt: [j no Davis-Besse Nuclear Power Station Date b /~ 6 #

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8109150568 810901 PDR ADOCK 05000346 PDR S EDISON PLAZA 300 MADISON AVENUE TOLEDO. OHIO 43552 inc outtuu tuiduN GOMPANY

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