ML17252B424

LER 76-030-00 for Dresden Unit 2 Regarding a Laboratory Analysis Discovery of the a SBGT Train Iodine Removal Efficiency to Be 94.46 + or - .03 Percent Which Is Below the Permissible Limit

ML17252B424
Person / Time
Site:	Dresden
Issue date:	05/20/1976
From:	Stephenson B Commonwealth Edison Co
To:	James Keppler NRC/RGN-III
References
BBS Ltr, #396-76, LER 74-023-00 LER 76-030-00
Download: ML17252B424 (3)

Text

Commonwe ~ Edison Dresden NuclearWer Station R.R. #1 Morris, llllnols 60450 Telephone 815/942*2920

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BBS Ltr, /1396..,.76 May 20, 1976 Mr, James G, Keppler, Regional Director Directorate of Regulatory Operations - Region III U, S, Nuclear Regulatory Commission 799 Roosevelt Road Glen Ellyn, Illinois 60137 Enclosed please find Reportable Occurrence number 50-237/1976-30.

• This report is being submitted to your office in accordance with the Dresden Nuclear Power Station Technical Specifications, Section 6.6.B.

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,-Q'-B*. B. Stephenson

• ( Station Superintendent Dresden Nuclear Power Station Enclosure I

cc: Director of Inspection & Enfor~ement D~rector of Management Information & Program Control FU.e/NR.C

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EVENT DESCRIPTION (Continued)

• to replace the filter media in the "A" SBGT system train.

CAUSE DESCRIPTION (Continued) operating time.

In view of current testing standards, the requisite iodine removal efficiency would be only 90% for the conditions used for this test. A pending Tech. Spec. revision will permit acceptance of a 90% removal efficiency.