ML20090A661

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Forwards Updated Technical Evaluation of Electrical, Instrumentation & Control Design Aspects of Proposed License Amend for Single-Loop Operation of Monticello Nuclear Generating Plant, Replacing 791114 SER Encl
ML20090A661
Person / Time
Site: 05000000, Monticello
Issue date: 06/09/1980
From: Satterfield R
Office of Nuclear Reactor Regulation
To: Ippolito T
Office of Nuclear Reactor Regulation
Shared Package
ML17139C189 List:
References
FOIA-84-105 NUDOCS 8006240863
Download: ML20090A661 (1)


Text

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ga ercy;m'o UNITED STATES E

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NUCLEAR REGULATORY COMMISSION r

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JUN 9 1980

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r MEMORANDUM FOR:

T. A. Ippolito, Chief Operating Reactors Branch No. 2 Division of Licensing a

FROM:

R. M. Satterfield, Chief Instrumentation & Control Systems Branch

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Division of Systems Integration

SUBJECT:

UPDATED ENCLOSURE TO OUR SER FOR MONTICELLO NUCLEAR 5

GENERATING PLANT, UNIT 1, DATE NOVEMBER 14, 1979 7

I The Safety Evaluation Report on Monticello, Unit 1 for N-1 Loop Operation dated

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November 14, 1979 enclosed a technical evaluation by Lawrence Livermore Laboratory /EG&G (Consultant). The consultant has modified the conclusion

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section of his technical evaluation.

The changes are editorial to emphasize E

that plant specific analysis of ECCS in the single-loop mode of operation, not

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yet completed by the licensee, will require additional review of the nstru-mentation system.

Our evaluation of November 14, 1979, addressed this concern.

The April 1980 jssue of the consultant's technical evaluation is herewith attached as a replacement for the enclosure to our SER of November 14, 1979 L

for Monticello Unit 1.

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<L da R. M. Satte field, Chief Instrumentation & Control Systems Branch Division of Systems Integration cc: j,Meyern m-

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Contact:

J. Burdoin, x29434

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2-f pa aso UNITED STATES J

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8 SEP 10192 Docket Nos.: 50-263 MEMORANDUM FOR:

Gus C. Lainas, Assistant Director for Operating Reactors, Division of Licensing FROM:

Themis P. Speis, Assistant Director fur Reactor Safety Division of Systems Integration

SUBJECT:

SAFETY EVALUATION OF MONTICELLO NUCLEAR GENERATING PLANT SINGLE LOOP OPERATION Plant Name:

Monticello Nuclear Generating Plant Docket Numbers:

50-263 NSSS Supplier:

General Electric Responsible Branch:

- ORB-2 Project Manager:

H. Nicolaras Review Status:

Complete Enclosed is the Safety Evaluation Report to permit Monticello Laclear Generating Plant to operate on a single loop with power limited to 50%.

This completes one action under multiplant item E-04 (TAC #48646)

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e Themis P. Spels, Assistant Director for Reactor Safety Division of Systems Integration

Enclosure:

As stated cc:

R. Mattson R. Capra L. Phillips T. Marsh G. Schwenk G. Mazetis Richard Clark

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n D. B. Vassallo CONTACT $ G. Thomas X29445 l f.

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