ML19210A756

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Forwards Safety Evaluation Approving Change in Cycle 4 from 130 to 280 Effective Full Power Days.W/O Encl
ML19210A756
Person / Time
Site: Crane Constellation icon.png
Issue date: 09/01/1978
From: Check P
Office of Nuclear Reactor Regulation
To: Reid R
Office of Nuclear Reactor Regulation
References
NUDOCS 7910310569
Download: ML19210A756 (1)


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Docket No.:

50-239 PEOPxtDUM FOR: Robert W. Reid, Chief. Operating Reactors Branch f4, DC

FROM:

Paul S. Check, Chief, Reactor Safety Branch, DDR

SUBJECT:

EVALUATION OF THREE MILE ISLAND UMIT 1 FOR CYCLE 4 OPERATIO*:

BEYOND 130 EFPD (Tt.CS f7755)

PLM T NAME: Three Mile Island Unit No.1 DOCKET NO.: 50-289 RESPONSIBLE BRANCH MD PROJECT MANAGER: ORS-4, G. Zwetzig REVIEW BRANCH:

Reactor Safety REVIEW STATUS: Complete Attached is the Reactor Safety Branch's safety evaluation report for extending the approval of Cycle 4 of THI-1 from 130 EFPD to 280 EFPD. Our review addressed the nuclear, themal-hydraulic and fuel system characteristics together with the abnomal transient and postulated accident consequences for a Cycle 4 maximum energy output of 280 EFPS. We have detemined that the safety nargins for this cycle length are adequate with respect to current NRC regulations and standards and that Cycle 4 operation, basdd on the propoced Technical Spedification changes is acceptable.

Paul S. Check, Chief Reactor Safety Branch Division of Operating Reactors

Enclosure:

As stated jfg}} cc: Y. Stello F. Codf:aan D. Eisenhut C. Berlinger W. Russell S. Meiss B. Grimes S. Rubin K. Kniel S'I # J 702 4 3,, g., O

Contact:

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