ML19345F360

Forwards Addl Info Re Allowable Accelerations for Valves 1E12-F092A & 1E12-F041A,per NRC Request.Telcon W/Nrc on 810205 Resolved Concern Re Allowables Used to Evaluate Vessel Nozzles W/O Need for Supplemental Submittal

ML19345F360
Person / Time
Site:	LaSalle
Issue date:	02/12/1981
From:	Delgeorge L COMMONWEALTH EDISON CO.
To:	Youngblood B Office of Nuclear Reactor Regulation
References
LOD-81-40-17, NUDOCS 8102170339
Download: ML19345F360 (2)

Text

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. Commonwealth Edison Ona First Nctionti PI za Chic *oo. Illinois Address Reply to: Post Office Box 767 Chicago, Illiness 60690 February 12, 1961 Mr. B. J. Youngblood, Chief Licensing Branch 1 Division of Licensing U.S. Nuclear Regulatory Commission Washington, D. C. 20555

Subject:

LaSalle County Station Units 1 and 2 Supplerrental Information Concerning NRC Confirmatory Piping Analysis (RH-04)

NRC Docket Nos. 50-373/374 LOD 81-40-17

Dear Mr. Youngblood:

In response to a request from the Mechanical Engineering Branch regarding the NRC Staff's confirmatory analysis of piping subsystem RH-04, additional information on the allowable accelerations for valves lE12-F092A and lE12-F041A are attached.

Another related discussion regarding the allowables used to evaluate vessel nozzles was discussed with MEB in a telecon on February 5, 1981 and resolved the Staff's concern without the need for a supplemental submittal.

In the event you have any further questions in this regard, please direct them to this office.

Very trul yours, L. O. DelGeorge Nuclear Licensing Administrator Attachment cc: NRC Resident Inspector-LSCS

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