05000333/LER-1979-083-03, /03L-0:on 791008,during Normal Operation,Routine Computer Printout of Core Performance Log Indicated That Max Fraction of Limiting Power Density Exceeded 1.000. Reactor Power Immediately Reduced 3%

/03L-0:on 791008,during Normal Operation,Routine Computer Printout of Core Performance Log Indicated That Max Fraction of Limiting Power Density Exceeded 1.000. Reactor Power Immediately Reduced 3%

ML19254F493
Person / Time
Site:	FitzPatrick
Issue date:	11/05/1979
From:	W. Verne Childs POWER AUTHORITY OF THE STATE OF NEW YORK (NEW YORK
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19254F492	List: 05000333/LER-1979-083, Forwards LER 79-083/03L-0 05000333/LER-1979-083-03, /03L-0:on 791008,during Normal Operation,Routine Computer Printout of Core Performance Log Indicated That Max Fraction of Limiting Power Density Exceeded 1.000. Reactor Power Immediately Reduced 3%
References
LER-79-083-03L, LER-79-83-3L, NUDOCS 7911090529
Download: ML19254F493 (2)

LER-1979-083, /03L-0:on 791008,during Normal Operation,Routine Computer Printout of Core Performance Log Indicated That Max Fraction of Limiting Power Density Exceeded 1.000. Reactor Power Immediately Reduced 3%

Event date:
Report date:
3331979083R03 - NRC Website

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7 8 9 10 80 ITITI LN_j@ DESCRIPTION QQ QgQ l NA l lllllll l l l l l y, ISSUED I 4 9 10 68 69 80 E rr,e ChiIds (315) 342-3840 { NAME OF PREPAHER PHON E:

POWER AUTHORITY OF THE STATE OF NEW YORK JAMES A. FITZPATRICK NUCLEAR POWER PLANT DOCKET N0. 50-333 ATTACHMENT TO LER 79-083/03L-0 Page 1 of 1 During normal cperation, operations personnel noted that a routine computer printout of the core performance log indicated that the Maximum Fraction of Limiting Power Density (MFLPD) was 1.014 and 1.016 for two nodes compared to a Technical Specification limit of equal to or less than 1.000. Reactor power was immediately reduced approximately 3% in accordance with the requirements of Technical Specification, Appendix A, Paragraph 4.1.B. This action restored MFLPD to within the limits of Technical Specifications within the time frame allowed and is censidered to be equivalent to operation in a degraded mode. Following the initial power reduction, the control rod pattern was adjusted to reduce local power and power was returned to approximately 100% of rated power three hours later. The event did not represent any significant hazard to the public health and safety. ~'^7 319 e }}