ML20214M213

Responds to 870403 Request Re Iodine Releases,Availability of Records & Measurement of Calculation Methods.Nrc Routinely Inspects Util Effluent Release & Sampling Programs & Semiannual Effluent Repts

ML20214M213
Person / Time
Site:	Pilgrim
Issue date:	05/22/1987
From:	Wessman R Office of Nuclear Reactor Regulation
To:	Perkins J AFFILIATION NOT ASSIGNED
References
NUDOCS 8706010231
Download: ML20214M213 (2)

Text

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Docket No.: 50-293 2 219d Mr. James Perkins Box 141 North Easton, MA 02356

Dear Mr. Perkins:

This is in response to your letter of April 3,1987, regarding airborne effluents from the Pilgrim Nuclear Power Station. In that letter you re-quested information regarding iodine releases, availability of records and measurement and calculation methods.

Iodine treasurements are made on a weekly basis during operation. These measurements were required in the mid-1970's and are also required today.

The licensee's Technical Specifications require that reports of these measurements be maintained for a period of at least five years. They are used as input for the Semi-Annual Radioactive Effluent and Waste Disposal Report.

This Semi-Annual Effluent Report is submitted to the NRC and a copy is placed in the local public document roon in the Plymouth Public Library (11 North Street, Plymouth, MA 02360).

The isotopic release information reported in the Semi-Annual Effluent Report is developed from measurements taken during effluent release. A small portion of the gaseous release stream is diverted and passed through a charcoal filter.

Periodically, this filter is then removed and analyzed. From this analysis, the utility is able to calculate the isotopic quantity of iodine released. There is not a uniform formula which NRC requires all licensees to use in making this calculation, but the licensees determine the iodine release employing formulae that are unique to the facility and the release path, flow rate, charcoal filter size, etc.

The methods used in this calculation have been evaluated by the NRC during the licensing process and found to be acceptable.

The NRC routinely inspects utility effluent release and sampling programs.

Additionally, the NRC reviews the Semi-Annual Effluent Reports.

I trust this letter is responsive to your concerns. Please contact me at (301)492-4937 if you have further questicns.

Sincerely, EO D @ 93

/s (

R. H. Wessman, Senior Project Manager H PDR Project Directorate I-3 Division of Reactor Projects I/II cc: See next page DISTRIBl! TION:

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, IIII Mr. Ralph G. Bird Boston Edison Company Pilgrim Nuclear Power Station cc:

Mr. K. P. Roberts, Station Manager Boston Edison Company M/C Nuclear Boston Edison Company ATTN: Ralph G. Bird RFD #1, Rocky Hill Road Senior Vice President - Nuclear Plynouth, Massachusetts 02360 800 Boylston Street Boston, Massachusetts 02199 Resident Inspector's Office U. S. Nuclear Regulatory Commission Post Office Box 867 Plymouth, Massachusetts 02360 Chairman, Board of Selectmen 11 Lincoln Street Plymouth, Massachusetts 02360 Office of the Commissioner Massachusetts Department of Environmental Quality Engineering One Winter Street Boston, Massachusetts 02108 Office of the Attorney General 1 Ashburton Place 19th Floor Boston, Massachusetts 02108 Mr. Robert M. Hallisey, Director Radiation Control Program Massachusetts Department of Public Health 150 Tremont Street, 2nd Floor Boston, Massachusetts 02111 Regional Administrator, Region I U. S. Nuclear Regulatory Commission 631 Park Avenue King of Prussia, Pennsylvania 19406 Mr. James D. Keyes Boston Edison Company 25 Braintree Hill Office Park Braintree, Massachusetts 02184 I