05000366/LER-1979-031-08, /08L-0 on 790725:while Placing Reactor Bldg Chillers in Parallel for Test of 72% Steady State Power, Volumetric Average Drywell Temp Exceeded 135 F.Cause Not Stated.Temp Reduced within 2-h.Tech Specs Changed

/08L-0 on 790725:while Placing Reactor Bldg Chillers in Parallel for Test of 72% Steady State Power, Volumetric Average Drywell Temp Exceeded 135 F.Cause Not Stated.Temp Reduced within 2-h.Tech Specs Changed

ML19242C770
Person / Time
Site:	Hatch
Issue date:	08/03/1979
From:	Coggin C GEORGIA POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19242C765	List: 05000366/LER-1979-031-08, /08L-0 on 790725:while Placing Reactor Bldg Chillers in Parallel for Test of 72% Steady State Power, Volumetric Average Drywell Temp Exceeded 135 F.Cause Not Stated.Temp Reduced within 2-h.Tech Specs Changed 05000366/LER-1979-081, Forwards LER 79-081/08L-0
References
LER-79-031-08L, LER-79-31-8L, NUDOCS 7908130345
Download: ML19242C770 (2)

LER-1979-031, /08L-0 on 790725:while Placing Reactor Bldg Chillers in Parallel for Test of 72% Steady State Power, Volumetric Average Drywell Temp Exceeded 135 F.Cause Not Stated.Temp Reduced within 2-h.Tech Specs Changed

Event date:
Report date:
3661979031R08 - NRC Website

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40 41 42 43 44 47 CAUSE DCSCmPTION AND CCRRECTIVE ACTIONS h liin i The drywell temocr$t'ure was reduced belcw 1350F within 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> by returning the

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,,, l Uithin 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> of the deviation, the drywell temperature was reduced below 1350F i - l while both chillers were operating during the special test.

A safety evaluation wasg l perforced ar.d the Tech Spec limit has been changed,

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Georgia Power Company Plant E. I. !!atch Baxley, Georgia 31513 Cause Description and Corrective Actionsfrom 1350F to 1450F until permanent modificationsican be made.

The unit is now at full power and the temperatures have stabilized well below the new T.S. limit.

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