ML20005A048

Forwards LER 81-064/03L-0

ML20005A048
Person / Time
Site:	McGuire
Issue date:	05/21/1981
From:	Parker W DUKE POWER CO.
To:	James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML20005A049	List: ML20005A048 ML20005A050
References
NUDOCS 8106290295
Download: ML20005A048 (3)

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1. iC F Pe t t' O f s.T f tbt***0= g; Ae ga TC4 s u.- naoover0= May 21, 1981 27 2-*c e s Mr. James P. O'Peilly, Director U.S. Nuclear Regulatory Commission Region II .

101 Marietta Street, Suite 3100 Atlanta, Georgia 30303 Re: McGuire Nuclear Station Unit 1 Docket No. 50-369

Dear Mr. O'Reilly:

Please t'ind attached Reportable Occurrence Report R0-369/81-64. This report concerns the wrong semi-daily surveillance items checklists being conducted on two successive shifts. This incident was considered to be of no signi-ficance with respect to the health and safety of the public.

Very truly yours, k'(  % 0 6-rfet/ '

Milliam O. Parker, Jr.

R_WO:pw Attachment ec: Director Mr. Bill Lavallee Office of Management & Program Analysis Nuclear Safety Analysis Center U.S. Nuclear Regulatory Commission Post Office Box 10412 Wuhington, D. C. 20555 Palo Alto, CA 94303 Ms. M. J. Graham Resident Inspector - NRC 41 I W, McGuire Nuclear Station c o

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McGUIRE NUCLEAR STATION INCIDENT REPORT Report Number: 81-64 Report Date: May 12, 1981 Occurrence Date: April 21, 1981 Facility: McGuire Unit 1, Cornelius, N. C.

Identification of Occurrence: The wrong semi-daily surveillance items check-lists were run on two successive shifts.

Conditions Prior to Occurrence: Mode 3, Hot Standby Description of Occurrence: The wrong semi-daily surveillance items checklists were run on two successive shifts. At 1700 hours0.0197 days <br />0.472 hours <br />0.00281 weeks <br />6.4685e-4 months <br /> on April 21, 1981, the check-list for Mode 4 surveillances was run instead of the checklist for Mode 3. At 0600 hours0.00694 days <br />0.167 hours <br />9.920635e-4 weeks <br />2.283e-4 months <br /> on April 22, 1981, the checklist for Mode i surveillance was run instead of the checklist for Mode 3. This was reportable pursuant to Technical Specification 6.9.1.13c.

Apparent-Cause of Occurrence: Personnel inadvertently used the wrong en-closures to run the semi-daily surveillance items periodic test.

Analysis of Occurrence: A periodic Test, Semi-Daily Surveillance Items, is used te verify the operability of various instrumentation and/or systems in the plant. It is performed twice daily; once be. tween 0500 and 0800 hours0.00926 days <br />0.222 hours <br />0.00132 weeks <br />3.044e-4 months <br /> and once between 1700 and 2000 hours0.0231 days <br />0.556 hours <br />0.00331 weeks <br />7.61e-4 months <br />. The periodic test consists of six enclosures; one checklist for each mode of operation. At 1700 hours0.0197 days <br />0.472 hours <br />0.00281 weeks <br />6.4685e-4 months <br /> on April 21, 1981, cae checklist for Mode 4 surveillance was run instead of -

the checklist for Mode 3. After the checklist was completed, it was approved by the Shift Su9ervisor.

At 0600 hours0.00694 days <br />0.167 hours <br />9.920635e-4 weeks <br />2.283e-4 months <br /> on April 22, 1981, the checklist for Mode i surveillances was run instead of the checklist for Mode 3. After the checklist was completed, it was approved by the Shift Supervisor.

At approximately 1215 hours0.0141 days <br />0.338 hours <br />0.00201 weeks <br />4.623075e-4 months <br /> on April 22, a review of the semi-daily surveil-lance items checklists (1700 hours0.0197 days <br />0.472 hours <br />0.00281 weeks <br />6.4685e-4 months <br /> on April 21 and 0600 hours0.00694 days <br />0.167 hours <br />9.920635e-4 weeks <br />2.283e-4 months <br /> on April 22) .

was done and it was discovered that the wrong checklista had been run. The l Shif t Supervisor on duty was informed of the mistake and the correct check-list for Mode 3 was performed satisfactorily at 1350 hours0.0156 days <br />0.375 hours <br />0.00223 weeks <br />5.13675e-4 months <br />. The normal schedule was resumed at 1915 hours0.0222 days <br />0.532 hours <br />0.00317 weeks <br />7.286575e-4 months <br /> when the checklist for Mode 3 was run satisfactorily.

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• . 5 Report Number 81-64 Page 2 Safety Analysis: Even though the wrong semi-daily surveillance items check-lists were run, the surveillance items which were missed were being monitored regularly by the Control Room Operators since they are operating parameters.

- Thus, safe plant operation and the health and safety of the public were not affected. If the reactor had been at power, safety would not have been compromised since the missed pararecers were monitored regularly by Control Room personnel. In addition, the correct checklist for Mbde 3 was run at 1350 hours0.0156 days <br />0.375 hours <br />0.00223 weeks <br />5.13675e-4 months <br /> on April 22 and all parameters were satisfactory.

Corrective Action: The correct checklist for Mode 3, Semi-Daily Surveil-lance Items, was completed at 1350 hours0.0156 days <br />0.375 hours <br />0.00223 weeks <br />5.13675e-4 months <br /> on April 22, 1981. A meeting was held on April 24 in which all the Shif t Supervisors were cautioned about thoroughly reviewing paperwork before they approved it.

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