05000316/LER-1981-031-03, /03L-0:on 810711,during Startup,Average Temp Decreased Below Tech Spec Requirement.Caused by Using Excessive Feed Rate Which Created Larger Heat Sink & Lower Temp for Rcs.Feed Rate Reduced.Control Rods Withdrawn

/03L-0:on 810711,during Startup,Average Temp Decreased Below Tech Spec Requirement.Caused by Using Excessive Feed Rate Which Created Larger Heat Sink & Lower Temp for Rcs.Feed Rate Reduced.Control Rods Withdrawn

ML20010C230
Person / Time
Site:	Cook
Issue date:	08/10/1981
From:	Draper D INDIANA MICHIGAN POWER CO. (FORMERLY INDIANA & MICHIG
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML20010C229	List: 05000316/LER-1981-031, Forwards LER 81-031/03L-0 05000316/LER-1981-031-03, /03L-0:on 810711,during Startup,Average Temp Decreased Below Tech Spec Requirement.Caused by Using Excessive Feed Rate Which Created Larger Heat Sink & Lower Temp for Rcs.Feed Rate Reduced.Control Rods Withdrawn
References
LER-81-031-03L, LER-81-31-3L, NUDOCS 8108190266
Download: ML20010C230 (2)

LER-1981-031, /03L-0:on 810711,during Startup,Average Temp Decreased Below Tech Spec Requirement.Caused by Using Excessive Feed Rate Which Created Larger Heat Sink & Lower Temp for Rcs.Feed Rate Reduced.Control Rods Withdrawn

Event date:
Report date:
3161981031R03 - NRC Website

text

U. S. NUCLE AR REGULATORY COMMISSION NRC FORP.) 366 (7'7 7 )

LICENSEE EVENT REPORT CONTRCL RLOCK: I l

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f.,0 61 DOCK ET NUYBE R 6H b'J EVENT DATE 74 75 REPORT DATE 80 EVENT DESCRIPilON AND PROBABLE CONSEQUENCES h

!o I2 I l DURING A STARTUP WITH THE REACTOR CRITICAL, TAVG DECREASED BELOW 541 DEGREES. THIS ISI Io i3i l CONTRARY TO T.S. 3.1.1.5.

TAVG WAS INCREASED AB0VE 541 WITHIN APPR0XIMATELY 1 MIN.

l lo i4i l PREVIOUS SIMILAR EVENTS INCLUDE 315/80-18, 316/78-10, 316/78-092, 316/78-053, AND l

ro i s i i 316/78-032. NO PROBABLE CONSEQUENCES RESULTED FR0fi THIS EVENT.

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l i i il l TEMPERATURE DECREASE BUT THIS DID NOT PREVENT REACHING THE T.S. MINIftUM. ALL LICENSEDI ii ;.,1 OPERATORS WILL BE REQUIRED TO REVIEU THIS REPORT TO MAKE THEM AWARE OF THE CAUSE-l 8'

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