ML20071B336
| ML20071B336 | |
| Person / Time | |
|---|---|
| Site: | Midland |
| Issue date: | 02/16/1983 |
| From: | Jackie Cook CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.) |
| To: | Harold Denton Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML20071B337 | List: |
| References | |
| 21047, NUDOCS 8302280169 | |
| Download: ML20071B336 (2) | |
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@ Consumers Power James W Cook Vice Presedent - hojects,' Engineering and Construction General officas: 1945 West Parnell Road, Jackson, M149201 e (517) 78&O453 February 16, 1983 Harold R Denton, Director Office of Nuclear Reactor Regulation US Nuclear Regulatory Commission Washington, DC 20555 MIDLAND NUCLEAR C0 GENERATION PIANT MIDLAND DOCKET NOS 50-329, 50-330 SEISMIC MARGIN REVIEW REPORT FILE:
B3.7.1 SERIAL: 21047 ENCLOSURE: VOLUME VI-B0 RATED WATER STORAGE TANK AND FOUNDATION (25 COPIES)
REFERENCE:
LETTER FROM J W COOK TO H R DENTON, SERIAL 21010 DATED FEBRUARY 4, 1983 As an attachment to our letter, Serial 21010, dated February 4, 1983, we submitted.the criteria for the Seismic' Margin Review, Volume I, for the Staff's review and it was subsequently discussed in a meeting on February 8, 1983 in Bethesda. The firm of Structural Mechanics Associates (SMA) of Newport Beach, CA, under the direction of Dr R P Kennedy was entrusted the task of performing the Seismic Margin Review per the criteria in Volume I.
Volume VI, dealing with the evaluation of the seismic margins on the borated water. storage tank and its foundation, are submitted for the Staff's review as an attachment to this letter.
Volume VI of the Seismic Margin Review report titled, " Borated Water Storage Tank and Foundation" describes in detail the method of analysis and the resultir.g seismic margins. The method of analysis used and the resulting seismic margins have been presented by Dr R P Kennedy earlier in both the ASLB hearings -for seismic issues in Midland on December 14, 1981 and in the ACRS subcommittee meeting in Midland on May 20, 1982. The margin evaluation for this structure demonstrates that in all cases, the conservatively established margins are greater than 1.43 with respect to code allowables.
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' CC RJCook, Midland Resident Inspector RHernan, US NRC (3)
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