ML20062L013

Requests That Open Items Re NRC Audit of safety-related Structures Be Incorporated Into FSAR Review & SER Preparation.Proposed Items:External Pressure Analysis, Penetration Structural Integrity & Floor Response Spectra

ML20062L013
Person / Time
Site:	Midland
Issue date:	11/26/1980
From:	Jackie Cook CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.)
To:	Tedesco R Office of Nuclear Reactor Regulation
Shared Package
ML20062L011	List: ML20062L013
References
10109, NUDOCS 8101120250
Download: ML20062L013 (2)

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(O~T ConsunlefS PotYer James W Cook Company

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and conumasa Geneemt offices: 1945 West Pernall Road, Jackson, Ms 40201 e (517) 788 0453 November 26, 1980 Robert L Tedesco Assistant Director for Licensing Division of Licensing US Nuclear Regulatoy Commission Washington, DC 20555 MIDLAND PROJECT NRC REVIEW OF SEISMIC AND STRUCTURAL DESIGN CALCULATIONS FILE: 0460.2 UFI: 73*60 SERIAL: 10109 We have reviewed the NRC questions and guidelines preparatory to an NRC sf aff audit of major Midland safety-related structures which were provided to us with the NRC's correspondence of July 7, 1980.

We note that this " audit" has been structured as a very comprehensive review of the Midland safety grade structures which will require considerable preparation and resources by both the NRC and applicant. We recommend, the re fo re , that this effort be considered an integral part of the FSAR review and safety evaluation report preparations. We believe this approach will meet NRC staff management concerns on the efficient utilization of resources and assist in the timely completion of the licensing review process. We request the NRC staff to work with us to make this activity serve this dual purpose.

We suggest as a starting point that the following NRC open items could be integrated into this NRC review and resolved: '

o CSB 4 External Contair& ment Pressure Analysis (NRC Questions 022.29, 022.46/FSAR Section 6.2) o MEB (M) 1 Containment Liner and Penetration Structural Integrity (FSAR Table 3.8-36) o SEB 2 Adequacy of Containment Using ACI 359 Loads (NRC Questions 130.22, 130.17) o SEB 3 Adequacy of Category I Structures to ACI 318 Code *

(NRC Questions 130.23, 130.16) i o SEB 4 Floor Response Spectra "

(NRC Questions 130.24, 130.18/FSAR Section 3.7) oc1180-0092a100 8101120 2.50

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! We invite the staff to add or delete open issues to be targeted for resolution as part of the structural review.the above list which could As requested by the NRC's correspondence, we plan to prepare a comprehensive NRC team's review. written response to all questions and to have backup data availab '

Backup data will include such items as appropriate drawings, and typical calculations. sections of the FSAR, portions of the civil /

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Guideline questions were reviewed and categorized, and a preliminary estimate i was made of the engineering manhours required to prepare for and undergo the audit envisioned in the the NRC letter. '3ased on present estimates it is i anticipated prepare for and thatundergo approximately the audit.12,000 cagineering manhours will be required to 3

work is consistent with that of other licensees which the NRC has reviwed Our 1980.schedule of this ef fort indicates that we will be ready af ter April 1 ,

week ofWe April reconunend, 6 throughtherefore, April that the audit should be scheduled for the  !

i 10, 1981, beginning at 9:00 am on April 6.

We can accommodate the need for access to available design information and the need for an open meeting by holding this meeting in the first floor conference room in Bechtel Power Corporation's Ann Arbor engineering offices. As the details of these arrangements. requested we will work through the NRC Lic u

] JWC/RLT/cr l

CC Ll!Cu rtis RJCook, Midland Resident Inspector DFJudd i

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