ML20148G273

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Forwards Three Tables Which Correct Error in Counting Efficiency Determination,Resulting in under-estimating Actual Concentration & Activity of Tritium Released to Sanitary Sewer
ML20148G273
Person / Time
Site: North Carolina State University
Issue date: 05/27/1997
From: Perez P
North Carolina State University, RALEIGH, NC
To:
NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
Shared Package
ML20148G278 List:
References
NUDOCS 9706050255
Download: ML20148G273 (1)


Text

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[ North Carolina State University i -

Nuclear Reactor Prograrn l Departinent of Nuclear Engineering l Box 7909 Raleigh. NC 27895-7909 (919) 515-2321 27 May 1997 FAX (919) 515-5115 g .

U.S. Nuclear Regulatory Commission ,

Attn: Document Control Desk l Washington, DC 20555

Subject:

Corrections to Facility's Annual reports l Docket No. : 50-297 License No. : R-120

Reference:

Letter, P.B. Perez, NCSU, to USNRC Region ll Administrator, Notification of a Reportable Eventin Accordance with the NCSU PULSTAR Reactor's Technical

> Specifications Reporting Requirements, dated 2 May 1997

Dear Sir or Madam:

North Carolina State University notified the United States Nuclear Regulatory Commission on 2 May 1997 of a reportable event regarding liquid effluent levels. An error in the counting efficiency determination resulted in under-estimating the actual concentration and activity of tritium released to the sanitary sewer. However, the corrected tritium concentrations in all cases remain below: (1) 10 CFR 20 Appendix B, Table 3 sanitary sewer discharge concentration limit by a factor of 100, and (2) 10 CFR 20.2001 annual total activity release limit by a factor of over 1000. l l

The efficiency error affected item 6.7.5.f.1 in the previous three annual reports. Corrective

. actions to this event included correcting the affected annual reports. The attached three l tables on the following page summarize the corrected data. The previously reported numbers are provided as a reference in the shaded cells.

Please feel free to contact me at (919) 515-4602 or Mr. Gerald Wicks, Reactor Health Physicist at (919) 515-4601 if you have any questions or comments.

Sincerely yours, 97060$0255 970527 '

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I DR ADOCK 05000297 1 PDR - Pedro B. Perez, Associate Director, NRP Mr. Alexander Adams, Jr., USNRC g ,J g ,

Mr. Craig Bassett, USNRC  !

Mr. Gerald Wicks, CHP, NCSU i Dr. Charles W. Mayo, NCSU ,

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Attachment:

As stated North Carolina State University is a land-grant university and a constituent institution of The University of North Carolina.

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