ML20004D266

Forwards Vol 7 of Equipment Qualification Post-Audit Documentation Impedance Test Rept

ML20004D266
Person / Time
Site:	LaSalle
Issue date:	06/04/1981
From:	Delgeorge L COMMONWEALTH EDISON CO.
To:	Schwencer A Office of Nuclear Reactor Regulation
Shared Package
ML20004D267	List: ML20004D266 ML20004D272
References
NUDOCS 8106090090
Download: ML20004D266 (1)

Text

Commonwealth Edison Oro First National Plaza. Chiergo. Illinois Address Reply to: Post Othee Box 767 Chicago, Illinois 60690 June 4, 1981 n~

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Mr. A. Schwencer M u.s. maan iewton Licensing Branch 2

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U.S. Nuclear Regulatory Commission

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Subject:

LaSalle County Station Units 1 and 2 Supplemental Response Regarcing Seismic Qualification Review (Volume 7)

Impedance Test Report NRC Docket Nos. 50-373/374 Reference (1):

L. 0. DelGeorge letter to A.

Schwencer dated May 1, 1981.

Dear Mr. Schwencer:

Attachea is Volume 7 of the LaSalle County Nuclear Station Equipment Qualification Post-Audit Documentation - Impedance Test Report.

This submittal fulfills the commitment documented in Reference (1) to provide an evaluation of the adequacy of the aynamic modeling (SQRT) of LaSalle County Equipment through comparison with impedance test results.

Seventeen (17) items are addressed for which comparisons with the test results demonstrated design acequacy.

Design changes are being completed for two items (E22-F012 and E22-F023) based on earlier analyses, now verified by the impeaance testing.

These latter two items have also been included in this report for completeness.

Qualification of the as-modified aesign is now in progress, the results of which will be reported in the final SQRT Report to be submitted.

A copy of the attachea report was provided to Mr. K.

Singh of EG&G on June 2, 1981.

Therefore, three (3) copies are being provided to your office with no further transmittal to your consultant.

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

Completion of the LaSalle County SQRT program remains on the schedule defined in Reference (1).

Very truly yours

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L. O. DelGeorge Nuclear Licensing Aaministrator cc:

NRC Resident Inspector - LSCS (w/o attach.

1m THIS DOCUMENT CONTAINS 2108N

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SARGENT &

LUNDY INTER OFFICE MEMORANDUM J.

Sinnappan - 30 x6773 Date May 29, 1981 From Project No. 4266-00/4267-00/6093-00 Dept./Div. Mechanical / Engineering Mechanics spec. so.

File No.

EMD-030469 Page No.

1 Of 1 Client CECO Stn.

LaSalle County Unit 1&2 Subject Impedance Test Report - Part of Post Audit Documentation Vol. 7 (Safety-Related)

To:

J.

B. Gouvas - 31 (1/6)

D. C. Haan

- 21 (1/1)

CC:

M.

M. Hassaballa - 30 (1/1)

R.

Humphreys

- 18 (1/1)

EEB/AEM/JS

- 30 (1/1)

EMD File

- 30 (1/1)

Attached is the Impedance Test Report on selected safety-related equipment for transmittal to NRC.

This closes out one item from the SER open issues.

We are sending six copies to J.

B. Gouvas for distribution to CECO and NRC.

If you have any questions, please call me.

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