ML20011A688

LER 81-014/01T-0:on 810928,while in Cold Shutdown Condition W/Crd Sys Off to Support Plant Testing,Problems Were Encountered in Maintaining Vessel Level.Caused by Personnel Error & Incomplete Closure of Feedwater Stop Valve

ML20011A688
Person / Time
Site:	Peach Bottom
Issue date:	10/13/1981
From:	Cooney M PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20011A684	List: ML20011A683 ML20011A688
References
LER-81-014-01T, LER-81-14-1T, NUDOCS 8110290288
Download: ML20011A688 (1)

Text

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Unit 3 LICENSEE EVENT REPORT Report No. 3-81-1h/1T-0 CONTROL BLOCK: l l l l l 1 (PLE ASE PZtNT OR TYPE ALL REQUIRED INFORMATION)

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/ 8 60 61 DOCKET NUMBER 68 69 EVENT DATE #4 REPORT DATE EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h Ioi2l l While in cold condition with CRD system off to support plant testing, 1 Io l3 l l problems were encountered in maintaining vessel level. Level recovery l 1o j4l l was obtained by cracking a feedwater inlet valve. After closure, leakage l l

lo isi i through valve caused level to increase above main steam lines. Loss of l l

1o is 1 I this vent path caused reactor pressurization. Level decreased by dumping i I

gI water to torus which resulted in level .1$ feet above max Tech Spec l l

l o la i i limit. Primary containment was not required during this period. [

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42 l43Al@ l44Wl 013101@ 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h IiIoll Event caused by operator error and incomplete closure of feedwater stop l li i1 l l valve. A tight shut off was obtained on feedwater valve. Reactor head I l

li i2I I vents were opened, depressurizing the reactor to atmosphere and torus ]

,il3l l water level was brought within Tech Spec limits. I t i l41 l l f 8 9 80 ST S  % POWER OTHER STATUS IS O RY DISCOVERY DESCRIPTION 1 l 5 l [_Hj@ l 0 l 0 l 0 l@l Gold Shutdown l [A,j@l Operator Observation l ACTIVITY CO TENT RELEASED OF RELEASE AMOUNT OF ACTIVITY i OCATtON OF RELE ASE

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