ML20023D433

LER 83-046/03L-0:on 830412,monthly Functional Surveillance for Div I Chlorine Detection Sys Not Performed by 830410. Caused by Personnel Error

ML20023D433
Person / Time
Site:	Grand Gulf
Issue date:	05/12/1983
From:	Rohrer M MISSISSIPPI POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML20023D425	List: ML20023D424 ML20023D433
References
LER-83-046-03L, LER-83-46-3L, NUDOCS 8305200493
Download: ML20023D433 (2)

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NRC FORM 366 U. S. SIWCLEAA CEGULATO8tY COSASIS$ lee LICENSEE EVENT REPORT Attachment to AECM-83/0277 Page 1 Of 2 COP TROL BLOCK: l 1

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? 60 61 DOCKET NuteER W W EVENT DATE 74 75 REPORT DATE 80 EVENT DESCRIPTION AND PROSABLE CCWSEQUENCES h

, M lun April 12. 1993. it was dimenvered that the mnnthlv functipnal l 10 l 3 I isurveillance f or the "A" Division I chlorine detenction system had not l 10141 lbeen omrf ormed by its late date of Aoril io. 1983. T. S. 3. 3. 7. 9 re oui raal lOlsiIthat two chlorine detection systems be coerable at all times. Action 1 0 6 l(a) for T.S.3.3.7.9 was antered. This a/ ant had no affnet on the health!

O 7 land safptv of the oublic and did not constitute a throat to olant I 10181 lsaf etv. The event is beina reoarted oursuant to T.S.6.9.1.13.b. I 7 89 80 ,

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44 47 CAUSE DESCRIPTION ANDCORRECTIVE ACTIONS h ltl0llThe cause was due to personnel error. The surv. was scheduled ta be runl i i [pri or to 4-10. but due to personnel error. was rescheduled. A MWO for i i 2 lDiv. II instr. was being worked at the time and the I&C surv. schedulers 1 i 3 l thought that the funct. retest for it would also include a funct. on DiW i 4 l!. This did not occur, therefore, the late date was exceeded. I 7 8 9 80 S ANS %FCwtA OTHER STATUS dis O RY D4SCOVEPY DESCPHPTions Q [8_j@ lololol@l IK l @ Surveillance Scheduler l ACTavity CO TENT AMOUNT OF ACTivtTV LOCAT60N OF RE LE ASE 7

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Attachmint to AECM-63/0277

Page 2 of.2 SUPPLEMENTARY INFORMATION TO LER 83-046/03 L-0 Mississippi Power & Light Company Grand Gulf Nuclear Station - Unit 1 Docket No. 50-416 Technical Specification Involved: 3.3.7.8 Reported Under Technical Specification: 6.9.1.13.b Event Narrative:

On April 12, 1983, the surveillance schedulers realized that the monthly functional test for the Division 1 Chlorine Detection System had exceeded its late date of April 10, 1983. The cause was attributed to personnel error. 'A maintenance work order on the Division II Chlorine Detection System was being worked at the time that the Division I surveillance was due, and the I&C surveillance schedulers thought that the functional retest for this work would include a functional retest on the Division I detectors. This was incorrect and it was realized upon completion of the work. At this time, the surveillance was overdue and was immediately rescheduled. This is an isolated case and recurrence is considered unlikely. The schedulers caught their own mistake, therefore, we feel further instruction is not required. This is a final report.

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