ML20024F209

LER 83-111/03L-0:on 830730,during Performance of Work Order to Correct Malfunction W/Div I Isolation Reset Status lights,amphenol-type Signal Cable Connector in C/R Panel Disconnected.Caused by Personnel error.W/830829 Ltr

ML20024F209
Person / Time
Site:	Grand Gulf
Issue date:	08/29/1983
From:	Cathey D, Dale L MISSISSIPPI POWER & LIGHT CO.
To:	James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
References
AECM-83-0501, AECM-83-501, LER-83-111-03L, LER-83-111-3L, NUDOCS 8309090058
Download: ML20024F209 (2)

Text

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UCENSEE EVENT REPOAT Attachment to AECM-83/0501 Page 1 of 1 CONTROL BLOCK: l l l l l l lptgas peek Go TYPE ALL REQU4IED INFORMATION) j7t_o 8li9l I iJLICEni,EE al alCODE a l al i l@l o t 01 -1UCENSE 1* 15 ol oNUMSER l ol o l ol- l ol o @241 3> UCENSE1111 TYPE JO il i l@l l

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i 7 8  % @G8lof siof ofol 81 DOCKET NuaISSR S EVENT OAM 80 EVENT DESCRIPTIOss At") PR0sAsLE CONSEQUENCES h ITTT) Innei no na omrformance of a work order to correct a malfunction with thel 10131 IDivision I isoliation reset status lichts, an amphenol type signal cablej ~

fconnector in a C/R oanel was disconnected. Unexpectedly, the shutdown j o 4 10151Icoolina and control room fresh air HVAC systems isolated, and SBGT "A" l 0 6 ltrain initiated. This had no affect on the health and safety of the 1 IOITlloublic and did not constitute a threat to plant safety. This is reported l I

1oI8Ilgursuant to T.S.6.9.1.13.c. 80 E CO E SUSC E COIIIPonENT CODE DE SU E 4

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! CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h 1 O IThe cause was personnel error. The impact of the MWO was not realized i 11 111lbefore the fact. An administrative method of preventino this type of I i 2 levent is under consideration at this time. This is an interim report. ]

1983.

@ lAn update report is expected to be submitted by October 31, l I

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7 8 9 to D. E. Cathey puye NAME OF PREPARER

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N9e MISSISSIPPI POWER & LIG A@T COM Helping Build Mississippi ' " ' ' U.

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NUCLEAR pro 0UCDoN DEPARTMENT August 29, 1983 Ag,. g U. S. Nuclear Regulatory Consnission Region II 101 lbrietta St., N.W., Suite 2900 Atlanta, Georgia 30303 Attention: Mr. J. P. O'Reilly, Regional Administrator

SUBJECT:

Grand Gulf Nuclear Station Unit 1 Docket No. 50-416 License No. NPF-13 File 0260/L-835.0 Unexpected Isolation of Shutdown Cooling and Control Room Fresh Air HVAC Systems and Initiation of SBGT "A" LER 83-111/03 L-0 AECM-83/0501 On July 30, 1983, during the performance of a work order, the shutdown cooling and Control Room fresh air systems isolated and the Standby Cas Treatment System "A" train initiated unexpectedly. The event is reported pursuant to Technical Specification 6.9.1.13.c. Attached is LER 83-111/03 L-0 which is an interim report.

Yours truly, 3k g L. F. Dale Manager of Nuclear Services EBS/SHH: sap Attachment cc: Mr. J. B. Richard (v/a)

Mr. R. B. McGehee (w/o)

Mr. T. B. Conner (w/o)

Mr. G. B. Taylor (w/o)

Mr. Richard C. DeYoung, Director (w/a)

Office of Inspection & Enforcement U. S. Nuclear Regulatory Commission Washington, D. C. 20555 Document Control Desk (w/a)

U. S. Nuclear Regulatory Commission Washington, D. C. 20555 opp 1CI AL COIR 1- 1 Member Middle South Utilities System d

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