ML20009G088

LER 81-031/03L-0:on 810508,while in Mode 5,control Room Received High Groundwater Alarm.Caused by Localized Temporary High Groundwater Level at 0.25 Ft Above Slab Elevation.Level Checked & Alarm Cleared

ML20009G088
Person / Time
Site:	McGuire
Issue date:	06/07/1981
From:	Ouellette R DUKE POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML20009G084	List: ML20009G088
References
LER-81-081-03L, LER-81-81-3L, NUDOCS 8108030316
Download: ML20009G088 (1)

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NIC FORM 364 U.S. PtUCLEAR RECULATORY COMMIS530M tr.m LICENSEE EVENT REPORT EXHIBIT A CoNTRot StoCic: LI i

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68 69 24 I . 80 el coCggTNuuggR (VENT QATE 73 REPOR T OATE 80 EVENT CE!CRIPTION AND PROS ASLE CONSECUENCES h 1 o 121 l While in Mode 5 the Control Room received a high groimawater ninrm. The I t o 121 I level was found to be 0.25 feet above the slab elevation. This level re- I ITT- I I ni,4rna incronana 2,,run411nnco r, n r mockn4cn1 snnc4r4cn,-4nn 4_7_in_h nna 42 1 1 o 151 I reoortable oer Technical Soecification 6.9.1.13(b). The health and safety _J Io Is l I of the oublic were not affected. 1 ITITI I I t o le i i I CCE E su C E COMPCNENT CCCE SUSCOCE $ Of t.c_pJ.

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33 .o 41 42 43 44 CAUSE CESCRIPTICH ANO CCAREC"f1VE ACDCNS h li l o l I The cause of the alarm was a localized temporary high groundwater level. I li t il i The level was checked and within one hour the alarm cleared. I LLUJl I iiisi i i i I A sPowtM CTwin STATUS. RY C Q O!$COV $ av QESCMtPTION IIIII [_xj@ l nl n l nl@l 7 5 t Mode s I LAJ@l onerator observation I 12 13 e4 44 eq to agtgAsg3 op ortgAsg AMouMT CP ACTIVITY LOCATICN or matgAsg MA  ! MA 7 . 9 to te as de 5*1 8tm3CNNEL IIPCSumt3 NuweER TYPE CESCmiPTICN -

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NAME OF PREPAAER R. W. ouellette ,Neu g: (704) 373-7530 j 8108030316 810605 PDR ADOCK 05000369 S PDR -