ML19319B333

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Responds to AEC 700603 Request to Determine Probable Max Water Level Based on Probable Max Meterological Event Coincident W/High Lake Level.Results Show Max Lake Level of 583.7 Ft Above Mean Sea Level
ML19319B333
Person / Time
Site: Davis Besse 
Issue date: 07/24/1970
From: Sampson G
TOLEDO EDISON CO.
To: Price H
US ATOMIC ENERGY COMMISSION (AEC)
References
NUDOCS 8001150826
Download: ML19319B333 (1)


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Dear Mr. Price:

A letter from Dr. Peter A. Morris dated June 3,1970, requested that the probable

=aximum vatec level at the Davis-Besse site be determined based on a probable maximum meteorological event coincident with high lake level. The parameters of the maximum =eteorological event were given in the June 3,1970 letter.

This analysis has been ec=pleted and was reviewed with your staff on July 17, 1970. The results of this analysis show that a maximum lake level at the site of 583.7 feet above MSL could be expected and that waves of li=ited height could be expected in the station area under these conditions.

The station is protected from the effects of this leke level by having all grade openings at elevation 585.0 above MSL and vill be protected from the wave effects by means of a dike breakvater located on the north and east sides of the station area built up to an elevation of 591.0 feet above MSL. This vill provide pro-tection to all =ain building structures to per=it safe shutdown should this become ne:essary during a probable maximu= vater level period.

Calculations have been made to deter =ine the probable =aximum flood from the Toussaint River and these calculations show that a maximum water level at the station area resulting from this flood, would not exceed elevation 560.0 feet above MSL, which is 3.7 feet lover than the probable maxi =us water level of Lake Erie. This flood would have no adverse affect on operation of the Davis-Besse Station.

A more detailed discussion of these analyses and manner of station protection vill be given ir. a forthcoming a=end=ent to the PSAR.

Yours ve./ tru2y,

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