ML17037B562

Letter Requesting Additional Data Concerning Laboratory Radioiodine Decontamination Test

ML17037B562
Person / Time
Site:	Nine Mile Point
Issue date:	04/06/1976
From:	Goller K Office of Nuclear Reactor Regulation
To:	Rhode G Niagara Mohawk Power Corp
References
Download: ML17037B562 (6)

Text

Docket No. 50-220 Niagara l<ohawk Power Corporation ATTN: Nr. Gerald K. Rhode Vice President - Engineering 300 Erie Boulevard Hest Syracuse, New York 13202 Gentlemen:

RE: Nine Nile Point Your Tcchnical Specifications include surveillance requirements and limiting conditions for operation for engineered safety feature atmosphere cleanup systems. One of the specifications requires a radioactive methyl iodide contamination test to be performed periodically on the activated oharcoal in these systems. The purpose of these tests is to verify that the charcoal has not degraded unduly due to the effects of aging, weathering, and poisoning. Me contacted you and requested that you review your specifications against sample specifications which we sent you and propose changes to your specifications if appropriate. This sample specification would, in accord with our current requirements, require these tests to be performed every 720 hours0.00833 days <br />0.2 hours <br />0.00119 weeks <br />2.7396e-4 months <br />.

Limited information available to us indicates that an extension of this test interval beyond 720 hours0.00833 days <br />0.2 hours <br />0.00119 weeks <br />2.7396e-4 months <br /> may be Justifiable. He would like to obtain additional data which will allow us to evaluate adsorber performance with time to determine if of 720 hours0.00833 days <br />0.2 hours <br />0.00119 weeks <br />2.7396e-4 months <br /> can be extended. Therefore, we would like to obtain the testing frequency the data from the tests you and other reactor operators have performed. The following information for each laboratory radio-iodine decontamination test is needed:

1. The date the sample of charcoal was obtained, and the method under which it was obtained (e.g., canister and grain thief).

2. The time interval the charcoal had been installed in the system, and the approximate number of hours the appropr1ate ESF system had been 1n oper ation with the tested charcoal

3. The laboratory that performed the radioact1ve test.

4. The test agent (i.e., elemental iodine or methyl iodide).

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5. The test conditions (e.g., temperature, relative humidity, inlet concentration and duration of tes0). Test results should indicate whether RDT H16-1T procedures were followed.

6. The removal efficiency obtained, and the experimental error (if known).

7. Any unusual operating conditions or other information you may consider useful.

Xt would bo helpful if you could provide 1976. Thank you for your cooperation.

this information by June 1, Sincerely, DXSTRXBUTION:

NRC PDR Local PDR Docket Kar 1 R. Goller, Assistant Director ORB Rdg for Oper ating Reactors KRGoller Division of Operating Reactors TJCarter OELD OlGE (7}

GLear TVerdery JGuibert CParrish Deisenhut TBAbernathy JRBuchanan ACRS (16}

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X~ Niagara Mohawk Power Corporation 2 CC:

Arvin E. Upton, Esquire LeBoeuf, Lamb, Leiby 5 hfacRao 1757 N Street, N. N.

l(ashington, D. C. 20036 Anthony Z. Roisman, Esquire Roisman, Kessler and Cashdan 1712 N Street, N. 14.

Washington, D. C. 20036 Dr. i<illiam Seymour, Staff Coordinator New York State Atomic Energy Council New York State Department of Commerce 99 ii'ashington Street Albany, New York 12207 Oswego City Library 120 E. Second Street Oswego,. New York 13126 her. Robert P. Jones, Supervisor.

Town of Scriba R. D, A'4 Oswego, New York 13126

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