ML20125A477

Informs That Addl Info Needed in Order to Continue Review of NEDO-20846 Concerning ATWS Submittal.Applicant Should Submit Description of Mods & Schedule for Implementation

ML20125A477
Person / Time
Site:	Monticello
Issue date:	08/01/1975
From:	Stello V Office of Nuclear Reactor Regulation
To:	Goller K Office of Nuclear Reactor Regulation
Shared Package
ML20125A480	List: ML20125A477 ML20125A483
References
NUDOCS 9212080361
Download: ML20125A477 (2)

Text

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e@@KET FILE AUG 01 1915 NRR READING FILE V. STELLO l

j P, FLING Docket No. 50-263 l

Karl R. Coller, Assistant Director for Operating heactors, 2 RL j

REVIEW OF NEDO-20846, MONTICELLO ATWS SUBMITTAL Report

Title:

HEDO-20846, " Anticipated Transients Without Scram Study for the Monticello Generating Plant" Docket No.

50-263 5

l Originating Branch and Project Manager:

ORB-2, B. Buckley Technical Review Branch Involved: Reactor Systems Branch Description of Review: First Round Questions Review Status: Awaiting Information In order that we may continue our review of the subject topical, l

additional information is requested. However, tbs analysis sub-mitted included the effects of several plant modifications even i

though with the letter of April 1,1975, the applicant has not agreed to implement these changes. In the last sentence of I

this letter NSP stated, "...we do not believe backfitting of j

Monticello is presently warranted." However, the staff witnese

~

stated at the Monticello hearing on May 7, 1975 (page 1141 j

through 1143 of the hearing transcript), .. based on the infor-mation available to the staff today, we believe that-the conse-quences of an ATWS.. event at the Monticello facility is such that given the probability of occurrence of this event at this facility, steps should be taken to relieve the probability or the consequences of this event," and " Clearly the last sentence in the letter of i

April 1,1975 does not agree with the present Regulatory staff position that backfitting is required. For the Nonticello facility, in my opinion." Therefore, the applicant should submit a description i

of these modifications and'a schedule for. implementation.

l Ep5UMAY 4

i Tietor Sh!!o l

Victor Stello, Jr., Assistant Director i

for Reactor Safety Division of Technical Review

Enclosure:

eb0 Concerns on NED0-20846 4

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