ML19347B309
| ML19347B309 | |
| Person / Time | |
|---|---|
| Site: | Farley  |
| Issue date: | 10/06/1980 |
| From: | Clayton F ALABAMA POWER CO. |
| To: | Schwencer A Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 8010140346 | |
| Download: ML19347B309 (2) | |
Text
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Alaisma Power Company 600 N:rth 18tn Street Post Office Box 2641 Birmingham. Alabama 35291 i
Telephone 205 250-1000 j
m F. L CLAYTON, JR.
Senior Vice President Alabama Power October 6, 1980 me souvem estre nstem Docket No. 50-364 Direccor of Nuclear Reactor Regulation U. S. Nuclear Regulatory Commission Washington, D.C.
20555 Attention:
Mr. A. Schwencer RE: Joseph M. Farley Nuclear Plant - Unit No. 2 Seismic Oualification Review i
Gentlemen:
Enclosed is the additional information requested by the Seismic Qualification Review Team regarding the emergency air compre.ssors.
Should you have any questions, please advise.
Yours Iery t M
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F. L. Clayton, Jr.
FLCJr/RWS:aw
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Enclosure cc:
Mr. R. A. Thomas Mr. C. F. Trowbridge Mr. L. L. Kintner, W/ Enclosure Mr. W. H. Bradford, W/ Enclosure
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8010140Mb h,
I i
I ENCLOSURE 1
Emergency Air Compressors:
Seismic c:alification of the emergency air compressors was based on the test performed for the same compressors supplied for Calvert Cliffs; therefore, the Test Response Spectra (TRS) was designed to envelope the Calvert Cliffs seismic responae spectra. The Clavert Cliffs TRS also envelopes the Farley vertical response spectra, but since the Farley horizontal peak response frequency is somewhat higher than that of Calvert Cliffs, the IRS does not completely envelope the horizontal Farley response curves. However, the l
peak acceleration developed by the TRS is 5 g's (1/2% damping) whereas the greatest acceleration of the Farley horizontal response spectra is 2.5 g's 4
(1/2% damping OBE, North-South direction).
In addition, the compressor was operated before, during and after the test.
A throttle valve was opened on the outlet of the compressor so that it would continuously create compressed air during the seismic tests. The compressor caintained a constant 100 psi air pressure during all cest runs and no malfunctions occurred.
Based on the above and the fact that the compressors are not required to function during a seismic event, we believe the emergency air compressors are adequately qualified to withstand any postulated seismic event at Farley-Unit 2 and still perform their intended function.
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