ML20003G239

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Forwards Smud Task 170 - N.I. Calibr Error,Final Rept, Per 810114 Request for Info Re B&W Concerning Accident Induced Neutron Flux Errors
ML20003G239
Person / Time
Site: Rancho Seco
Issue date: 04/20/1981
From: Mattimoe J
SACRAMENTO MUNICIPAL UTILITY DISTRICT
To: Stolz J
Office of Nuclear Reactor Regulation
Shared Package
ML20003G240 List:
References
TAC-43264, NUDOCS 8104280516
Download: ML20003G239 (1)


Text

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esuun SACRAMENTO MUNIC PAL UTILITY DISTRICT C 6201 s street Box 15830, Sacramento Cali'ornia 95813; (916) 452 3211 April 20, 1981 o I th DIRECTOR OF NUCLEAR REACTOR REGULATION

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ATTENTION JOHN F STOLZ CHIEF N

OPERATING REACTORS BRANCH 4 h'7 M # h) y 5 b9xO'4 US NUCLEAR REGULATORY COMMISSION 7

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RANCHO SECO NUCLEAR GENERATING STATION, UNIT N0. 1 NEUTRON FLUX ERRORS Your letter of January 14, 1981 requested information concerning accident induced neutron flux errors as discussed in a letter to the NRC from the Babcock and Wilcox Company dated October 29, 1980. We have authorized an analysis by the Babcock & Wilcox Company and agree with the conclusions that the induced neutron flux measurement error is offset by available safety margins. Based on this analysis, we have determined that the present technical specification limits are adequate and that continued full power operation of Rancho Seco Unit 1 is therefore justified. The report prepared by Babcock and Wilcox, document number 12-112504'., is attached for your information.

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!7 John Mattimoe Assistant General Manager and Chief Engineer Enclosure 00$

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