ML20077B884

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RO 369/83-19:on 830413,fuel Pool Ventilation Sys VF Carbon Filter Sample Failed to Meet Penetration Criteria of Methyl Iodide of Less than 1%.Original Test Results Incorrect. Incident Not Reportable
ML20077B884
Person / Time
Site: McGuire Duke Energy icon.png
Issue date: 07/13/1983
From: Tucker H
DUKE POWER CO.
To: James O'Reilly
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
References
RO-369-83-19, NUDOCS 8307250475
Download: ML20077B884 (1)


Text

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CHARLOTTE, N.C.

k42 HALH. TUCKER TEL.EPHONE (704) 373-4531 vue esammewv 83 JllLJgy g.1 Mr. James P. O'Reilly, Regional Administrator U. S. Nuclear Regulatory Commission Region II 101 Marietta Street NW, Suite 2900 Atlanta, Georgia 30303 Re: McGuire Nuclear Station Docket No. 50-369 LER/RO-369/83-19

Dear Mr. O'Reilly:

On April 13, 1983, analysis of a representative fuel pool ventilation system (VF) carbon filter sample per T.S. 4.9.11.2(b) indicated the sample failed to meet the penetration criteria of methyl iodide of less than 1 percent. The VF system was subsequently declared inoperable per T.S. 3.9.11, and reportable occurrence report R0-369/83-19 detailing this event was submitted on May 12, 1983 at which time it was indicated that a followup report would be submitted when results of a third analysis were received and final corrective actions determined.

The original test results (6.54%) were subsequently proven to be incorrect when two additional laboratory tests, performed by independent vendors, showed the carbon to perform acceptably (0.56% and 0.20%). The VF system was therefore functionally operable, and this incident is not reportable (the reportable occurrence report should be voided). The VF system was reclassified as operable on May 9, 1983, and a new contract order for carbon analysis is being established with a vendor from whom reliable service and results have been received.

Very truly yours, f B. Y d g g

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Hal B. Tucker PBN:jfw cc: Document Control Desk Records Center U. S. Nuclear Regulatory Commission Institute of Nuclear Power Operations Washington, D. C.

20553 1100 Circle 75 Parkway, Suite 1500 Atlanta, Georgia 30339 Mr. U. T. Orders NRC Resident Inspector McGuire Nuclear Station OPMCrn76p]is l

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