ML20273A337

Nc State University - Reply to a Notice of Violation; 50-120/2020-201-01. Supplemental Data for 2015 Annual Operating Report Enclosed

ML20273A337
Person / Time
Site:	North Carolina State University
Issue date:	09/25/2020
From:	Hawari A North Carolina State University
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
IR 2020201-01
Download: ML20273A337 (2)

Text

Nuclear Reactor Program Campus Box 7909 Department of Nuclear Engineering 2500 Stinson Drive www.ne.ncsu.edu/nrp Raleigh, NC 27695-7909 919.515.7294 (voice) 919.513.1276 (fax)

September 25, 2020 US Nuclear Regulatory Commission Document Control Desk Washington, DC 20555

SUBJECT:

REPLY TO A NOTICE OF VIOLATION; 50-120/2020-201-01 LICENSE NO. R-120 DOCKET NO. 50-297 Enclosed please find supplemental data for the 2015 Annual Operating Report. This data is being provided as stated in our letter dated August 31, 2020 in response to Notice of Violation 50-120/2020-201-01.

If you have any questions regarding the above information, please contact Scott Lassell at 919-515-3347 (salassel@ncsu.edu).

I declare under penalty of perjury that the forgoing is true and correct. Executed on 25 September 2020.

Sincerely, Ayman I. Hawari, Ph.D.

Director, Nuclear Reactor Program

Enclosures:

Supplement to 2015 Annual Operating Report

Supplemental Data for 2015 Annual Operating Report, Section 6.7.4.f Liquid Waste iv. Releases to Unrestricted Areas An unaccounted loss of water from the reactor coolant system (RCS) occurred during the reporting period (calendar year). The RCS water loss is measured every work day and occurred at variable rates over the year. RCS water was not observed in surface locations or storm sewer locations outside the reactor building. Therefore, the unaccounted RCS water was assumed to be continuously released to grounds beneath the surface on the reactor site at the measured RCS loss rates over the year.

The average annual concentrations of radioactive material in the RCS water did not exceed values given in 10 CFR Part 20 Appendix B Table 2 Column 2 for liquid effluents. Therefore, no additional dilution was needed. Detected radionuclides were tritium and activation products associated with reactor operation. No fission products were detected. No tritium or activation products were detected in environmental samples (refer to Section 6.7.4.i).

RCS water activity and volume assumed to be released to unrestricted areas is shown below:

Total Tritium Volume Period Ci Ci Liters 01 JAN - 31 MAR 2015 1,157 1,155 7,085 1 APR - 30 JUN 2015 1,318 1,316 9,477 1 JUL - 30 SEP 2015 1,876 1,871 13,759 1 OCT - 31 DEC 2015 1,506 1,501 15,378 CALENDAR YEAR 2015 5,857 5,843 45,699 9a