05000220/LER-1980-011-04, /04L-0:on 800623,recorder Review Showed Condenser Inlet/Circulating Water Discharge Delta Temp Had Exceeded Tech Spec Limit on 800620-23.Station Load Reduced,Recorder Scale Expanded & Tech Spec Change Initiated

/04L-0:on 800623,recorder Review Showed Condenser Inlet/Circulating Water Discharge Delta Temp Had Exceeded Tech Spec Limit on 800620-23.Station Load Reduced,Recorder Scale Expanded & Tech Spec Change Initiated

ML18037A276
Person / Time
Site:	Nine Mile Point
Issue date:	07/22/1980
From:	Harrison P NIAGARA MOHAWK POWER CORP.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML17053B797	List: 05000220/LER-1980-011, Forwards LER 80-011/04L-0 05000220/LER-1980-011-04, /04L-0:on 800623,recorder Review Showed Condenser Inlet/Circulating Water Discharge Delta Temp Had Exceeded Tech Spec Limit on 800620-23.Station Load Reduced,Recorder Scale Expanded & Tech Spec Change Initiated ML18037A276
References
LER-80-011-04L, LER-80-11-4L, NUDOCS 8007290600
Download: ML18037A276 (4)

LER-1980-011, /04L-0:on 800623,recorder Review Showed Condenser Inlet/Circulating Water Discharge Delta Temp Had Exceeded Tech Spec Limit on 800620-23.Station Load Reduced,Recorder Scale Expanded & Tech Spec Change Initiated

Event date:
Report date:
2201980011R04 - NRC Website

text

NRC FORM 366

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U. S. NUCI.EAR REGULATORY COMMISSION

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8 CON'T

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QB 60 61 DOCKET NUMBER 68 69 EVENT DATE 74 ", 75

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EVENT DESCRIPTION AND PROBABL.E CONSEQUENCES ~10 During normal o'ration su ervisor review of recorder indications re-vealed that 'the condenser inlet/circulating water dischar e delta tern exceeded the 31.2 F Tech Spec limit for more than 8 hrs. in a.24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> period on days of 6/20-23/80.

Since the delta temp was a maximum of 32OF

~os during the entire Period, there was no significant environmental effect.

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Shift operations personnel evaluation. of te'm erature chart recorder at times in question did not consider the delta tern indication as bein in violation. However upon supervisory review of the recorder indications it was determined that the Tech Spec limit was being exceeded, and an immediate station load reduction was 7

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In addition the chart 80 METHOD OF DISCOVERY 45 46 45 80 80 80 80 PHONE:

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DISCOVERY DESCRIPTION Q2 Su'ervisor Review LOCATIONOF RELEASE Q N A

ATTACHMENT LER 80-11

Cause

Descri tion and Corrective Actions (Continued) recorder scale is being expanded to increase accuracy of the recorder, and a technical specification change has been submitted to increase the allowable delta temp to 35 F.

ATTACHMENT LER 80-11

Cause

Descri tion and Corrective Actions (Continued) recorder scale is being expanded to increase accuracy of the recorder, and a technical specification change has been submitted to increase the allowable delta temp to 35 F.