ML19345G162

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Ro:During Routine Bimonthly Setpoint Check,Two of Four Overpower Trip Setpoints Found 1% Over 109%.Setpoints Readjusted to Approx 108%
ML19345G162
Person / Time
Site: Haddam Neck File:Connecticut Yankee Atomic Power Co icon.png
Issue date: 05/24/1974
From: Hartley F
CONNECTICUT YANKEE ATOMIC POWER CO.
To: James O'Reilly
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
CYH-2665, NUDOCS 8103090071
Download: ML19345G162 (1)


Text

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CONNECTICUT Y A N K EE ATO MIC POWER COMPANY Jf 5\\ 'n \\ ~ '.7 HADDAM NECK PLANT RR 41. DOX 127E. EAST HAMPTON, CONN. o6424 N%W]

May 24, 1974 CYH-2665

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f-n c ftgnh Mr. James P. O'Reilly, Director e

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Region I Directorate of Regulatory Operations js/

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U. S. Atomic Energy Commission M

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631 Park Avenue King of Prussia, Pennsylvania 19406 Dear Mr. O'Reilly; As defined by Technical Specifications for Connecticut Yankee Atomic Power Station, Section 5.3, the following information concerning drift of protective instrumentation trip settings is hereby reported.

During a routine bi-monthly nuclear instrumentation over power tr'n set point check, two of four overpower trip set points were found 1% over the required 109%. The two set points were re-adjusted to approximately 108%.

A final report will be submitted within ten days.

Very truly yours, B/J gF.W.Hartley men Plant Superintenden MAY 29 IW4 N.

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REGULATORY DOCKET FILE COPY g.7g f /630900~7 l

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