ML20010G126

Submits Description of Iodine Analysis Method,Per NRC Request Re in-plant Iodine Instrumentation Under Accident Conditions.Requests Info Be Incorporated Into OL Application

ML20010G126
Person / Time
Site:	Callaway
Issue date:	09/10/1981
From:	Bryan J UNION ELECTRIC CO.
To:	Harold Denton Office of Nuclear Reactor Regulation
References
ULNRC-504, NUDOCS 8109150362
Download: ML20010G126 (3)

Text

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ll UNION ELECTRIC COMPANY Sp } 4 1901 GRATIOT STREET 'ee ST. Louis. Missouns

'2- .ap September 10, 1981 / =^ uaa

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Mr. Harold R. Denton Director of Nuclear Reactor Regulation U. S. Nuc3aar Regulatory Commission Washingtcn, D.C. 20555

Dear Mr. Denton:

ULNRC- 504 DOCKET NUMBEFS 50-483 AND 50-486 CALLAWAY '!LANT , UNITS 1 & 2 FINAL SAFEfY ANALYSIS REPORT In response to an NRC staff request concernins inplant iodine instrumentation under accident conditions, the following dec ribes our method of iodine analysis.

During accident conditions, charcoal cartridges removed from air samplers will be taken to the Hat Lab and purged with air or nitrogen to remove noble gases. Purging will be done under an appropriate ventilation hood. Cartridges will then be taken to the Counting Room for isotopic analysis using a HPGe detector, MCA and process computer to accurately determine the radiciodine concentrations. If, due to the accident conditions, the normal counting room is unavailable or unaccessible, an alternative counting room in the EOF providing a background low enough to determine radiciodine concentrations in a reasonable period of time will be used.

Depending upon the conditions at the time of sampling, the sample media may be charcoal or silver zeolite cartt?'Jes, or charcoal or silver zeolite--impregnated filter paper. The appropriate sample media will be determined on the bacis of the l sampling environment, and the efficiency of the media for collection of radiohalogens, particulates and noble gases.

Procedures will be developed based on specific equipment types / brands purchased by Union Electric. A training program will be developed and include the review of procedures and demonstration of methods by personnel responsible for air sample collection, preparation and counting / analysis to assure proficiency in determining radioiodine concentrations during accident and post-accident conditions.

This information is hereby incorporated into the Callaway Application.

le truly ours, Mb b. C :

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ryan NGS/afg

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STATE OF MISSOURI )

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CITY OF ST. LOUIS )

Robert J. Schukai, c f lawful age, being first duly sworn upon oath says that he is General Manager-Engineering (Nuclear) for Union Electric Company; that he has read the foregoing document and

knows the content thereof; that he has executed the same for and on

. behalf of said company with full power and authority to do so; and i

that the facts therein stated are true and correct to the best of his knowledge, information and belief.

By \

R~ober J.

Schukai

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Genera anager-Engineering Nuclear SUBSCRIBED and sworn to before me this /8Mday of ., 1981 y

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BARDARA J. PFAFF NOTARY PUSLIC, STATE OF MISSOURI MY COMMISSION EXPIRES APRIL 22.1985 ST. LOU:S COUNTY 5

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cc: Glenn L. Koester Vice President Operations Kansas Gas & Electric P.O. Box 208 Wichita, Kansas 67201 John E. Arthur Chief Engineer Rochester Gas & Electric Company 89 East Avenue Rochester, New York 14649 r

A. V. Dienhart Vice President Plant Engineering and Construction Northern States Power 414 Nicollet Mall Minneapolis, Minnesota 55401 Donald T. McPhee Vice President Kancas City Power and Light Company 1330 Baltimore Avenue Kansas City, Missouri 64141 l l Gerald Charnoff, Esq.

Shaw, Pittman, Potts & Trowbridge 1800 M. Street, N.W.

Washington, D.C. 20036 Nicholas A. Petrick Executive Director SNUPPS 5 Choke Cherry Road Rockville, Maryland 20850 W. Hansen Callaway Resident Office U.S. Nuclear Regulatory Commission RR#1 Steedman, Missouri 65077 i

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