ML20155E600

Informs That Info in Several Important Review Areas Re Mark III Containment Will Not Be Available for Review on Basis to Meet Blue Book Schedule of 730907.Based on Listed Info Util Informed of Listed Items

ML20155E600
Person / Time
Site:	Grand Gulf, 05000000
Issue date:	09/04/1973
From:	Tedesco R US ATOMIC ENERGY COMMISSION (AEC)
To:	Hendrie J US ATOMIC ENERGY COMMISSION (AEC)
Shared Package
ML20155E140	List: ML20155E133 ML20155E182 ML20155E227 ML20155E338 ML20155E354 ML20155E367 ML20155E405 ML20155E430 ML20155E447 ML20155E473 ML20155E503 ML20155E550 ML20155E557 ML20155E565 ML20155E578 ML20155E600 ML20155E714 ML20155E728 ML20155E753 ML20155E770 ML20155E794 ML20155E948 ML20155E967 ML20155E986 ML20155F001 ML20155F053 ML20155F176 ML20155F191 ML20155F203 ML20155F217 ML20155F228 ML20155F252 ML20155F279 ML20155F302 ML20155F332 ML20155F378 ML20155F477 ML20155F485 ML20155F516 ML20155F534 ML20155F545 ML20155F560 ML20155F589 ML20155G308
References
FOIA-88-91 NUDOCS 8806160161
Download: ML20155E600 (2)

Text

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, [  %,_. UNITED STATES

• 1 ATOMIC ENERGY COMMISSION

• '* WASHINGTON, D.C. 20545

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%ne g September 4,1973 Note to J. M. Hendrie, Deputy Director for Technical Review, L GRAND GULF PROJECT - MARK III CONTAINMENT Recent discussions concerning the Mark III review on the. Grand Gulf proj ect have . indicated . that .informatiortin .severaL impor tant _.. ___ .___.

review areas will not be available for our review on a basis to meet the Blue Book schedule. In this regard, the applicant has informed us that:

1. The containment pressure response profiles and containment design pressure currently documented in the PSAR are out of -

date due to a revision in GE's Mark III analytical model.

2. The subcompartment differential pressure analyses currently provided in the PSAR are out of date as Bechtel has not finalized the design (volume and vent area) of these

. compartments. Design criteria have not been provided.

3. We learned in our meeting in San Jose on June 26-27, 1973, that G'E has not completed its analyses of the effects of pipe breaks inside containment but outside the drywell.

The applicant stated that these analyses are still not complete.

The project manager informed us (9/4/73) that the applicant has indicated that Item 1 would be submitted on September 18, 1973, and Item 2 (relating to design criteria), and Item 3 would be submitted on September 28, 1973. No schedule, however, was available for the submittal of subcompartment design information as to sizing. ,

We believe that the above items are integral to our review of the Grand Gulf Mark III containment functional design. The Blue Book schedule indicates Milestone No.12 on September 7,1973, which will require that we formulate positions in the above review areas without sufficient information. Since Grand Gulf is the first l

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'. J. M. Hendrie - 2-Mark III containment design under review and since we believe. tha* 1 the above items are critical to the design, we. believe. that a j schedule slippage is warranted. We, therefore., recommend that  ;

Milestone No. 12 be slipped to October 19, 1973, due to applicant delay, to allow time for this information to be submitted and reviewed prior to our formulation of positions. l S ?h CD

_ _ . _ - . _ . _ . -- .- RobertT. Tedesco,-' Assistant Director for Containment Safety Directorate of Licensing cc: G. Lainas R. Cudlin b

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