ML19261F058
| ML19261F058 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 06/09/1972 |
| From: | Maccary R US ATOMIC ENERGY COMMISSION (AEC) |
| To: | Tedesco R US ATOMIC ENERGY COMMISSION (AEC) |
| References | |
| AAF-TR-7101, NUDOCS 7910180674 | |
| Download: ML19261F058 (2) | |
Text
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JUN 9 1972 3
Robert L. Tedesco, Assistant Director for Containment Safety, Directorate of Licensing TECENICAL ASSISTANCE REQUEST FOR REVIEW OF TOPICAL REFORT AAF-TR-7101
" DESIGN AND TESTING OF FAN-COOLER FILTER SYSTEMS FOR NUCT.RAR APPLICATIONS" DATZD FEBRUARY 20, 1972 The topical report titled " Design and Testing of Fan-Cooler Filter Systsas for Nuclear Applications" AAF-TR-7101 dated February 20, 1972 sulanitted by American Air Filter Company, Louisville hcs been reviewed and evaluated by the L Hechanical Engineering Branch. Adequate response to the enclosed request for additional information is required before we can complete our evaluation of the saf==4e analysis approach of the filter systems described in the report.
3 y 50-369 R. R. Maccary, Assistant Director for Reactor Safety Directorate of Licensing Flant Name Thrsa Mile Island Licensing Stage Operating License Docket No. 50-289 Requesting Branch: Containment Safety, L Project Leader:
D. D. Reiff Requesced Completion Date: June 20, 1972 Technical Review Branches Involved: Mechanical Engineering Branch Description of Request: Review of techniques used by AAF in seismic design Review Status Need for additional information cc w/ encl S. H. Banauer, DETA J. M. Hendrie, L R. C. DeYoung, L G. C. Ladnas, L D. F. tanSe, t 1486 175 D. D. Reiff, L K. K. Espur, L cc w/o encl Docket File A, Giambusso, L L. Reading File W. G. Mcdonald, L L:MEB Reading File omcE >
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REQUEST FOR ADDITIONAL INFORMATION THREE MILE ISLAND NUCLEAR STATION UNIT 1 DOCKET No. 50-289 1.
If the tens " root-mean-square basis" is used in deucribing the com-bination of modal responses, confirmation that the responses are combined using the square root of the sum of the squares should be provided.
2.
The criteria for combining modal responses (shears, moments, stresses, deflections, and/or accelerations) where modal frequencies r.;e alosely spaced and a response spectrum modal analysis method is vsed shottid be provided.
3.
If static loads equivalent to the peak of the floor spectrum curve are used for the seismic design of components and equipment, the use of peak spectrum values should be justified by demonstrating that the contribution of all significant dynamic modes of response under seismic excitation have been included.
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