ML24057A274

GE-Hitachi Nuclear Energy Americas, LLC, 2023 GEH Morris Operation Annual Effluent Report

ML24057A274
Person / Time
Site:	07200001
Issue date:	02/26/2024
From:	Mcfadden A GE-Hitachi Nuclear Energy Americas
To:	Office of Nuclear Material Safety and Safeguards, NRC/RGN-III, Document Control Desk
References
M240036
Download: ML24057A274 (1)

Text

GE Hitachi Nuclear Energy

• HITACHI GEH Morris Operation 7555 East Collins Rd Morris, IL 60450

M240036

February 26, 2024

ATTN: Document Control Desk Director, Division of Fuel Management Office of Nuclear Material Safety and Safeguards U.S. Nuclear Regulatory Commission Washington, DC 20555-0001

Regional Administrator U.S. Nuclear Regulatory Commission, Region Ill 2443 Warrenville Road, Ste 210 Lisle, IL 60532-4352

Subject:

2023 GEH Morris Operation Annual Effluent Report

References:

1) NRC License SNM-2500, Docket 72-01

2) NRC Regulation 1 0CFR72.44

Dear Sir or Madam,

In accordance with 1 0CFR72.44(d)(3) and SNM-2500 license condition 8.2.1, this report documents an estimate of quantities of principal radionuclides released to the environment by the GE-Hitachi Morris Operation in 2023. This report also provides an estimate of the maximum potential dose to the public resulting from GE-Hitachi Morris Operation effluents for 2023.

Particulate and gaseous radionuclides above minimum detectable levels were used in calculations. Particulates present on the stack monitor filters were C-14, Cm-242, NP-237, Ni-63, Sr-89, Pu-239 & 240. Gaseous radionuclides evaluated were H-3 and Kr-85. The quantity of tritium released was calculated by multiplying basin water evaporative losses, by the average tritium levels in the fuel basins. The amount of Kr-85 released was calculated by multiplying the concentration found in samples taken directly over the basin water, by the airflow through the basin area.

COMPLY V1.7.1 (the EPA software program) was used to calculate the Committed Effective Dose Equivalent from the release of principle radionuclides. The quantities released and the estimated dose to the public is shown in the following table:

Nuclide Activity Discharged (Ci/Yr)

C-14 5.778E-6 Sr-89 3.654E-7 Pu-239 & 240 9.187E-8 Cm-242 7.052E-8 Np-237 1.418E-7 Ni-63 1.166E-6 H-3 7. 135E-3 Kr-85 1.088E-0 U.S. NRC 2023 GEH Morris Operation Annual Effluent Report M240036 February 26, 2024 Page 2 of2

Committed Effective Dose Equivalent: 4.0 E-6 mRem/year

There are no liquid effluents from the site. Surface and groundwater water tritium levels were below minimum detectable levels and are conservatively reported as the minimum detectable level.

The maximum potential Committed Effective Dose Equivalent to the public that could occur from surface water was calculated to be 7.5 E-3 mRem - based on a person consuming water all year from the Sanitary Lagoons (MDA of 164 pCi/I H-3).

The maximum potential Committed Effective Dose Equivalent to the public that could occur from groundwater was calculated to be 7.8 E-3 mRem - based on a person consuming water all year from any of the following wells: DM-1, 2, 3, 4, 5, 6, 7, and 8 (MDA of 170 pCi/1 H-3).

Measurement of direct radiation at the GE-Hitachi Morris Operation owner control boundary is accomplished using TLDs prepared and processed by a NVLAP certified laboratory using direct measurement techniques. The calculated maximum potential Deep Dose Equivalent to the public that could occur from direct radiation at the boundary of the owner-controlled area was calculated to be 0.164 mRem assuming the maximum time spent at the boundary is 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> per year.

The maximum potential radiation dose to the public, for 2023, would result from the sum of the stack effluent releases, the dose from drinking surface water from the Sanitary Lagoons,

ground water from monitoring wells DM-1, 2, 3, 4, 5, 6, 7, and 8, and from direct radiation at the owner-controlled boundary. The maximum potential Total Effective Dose Equivalent (TEDE) to the public estimated from these sources for 2023 is: 0.179 mRem.

Sincerely,

.,ll,///~/V"~~ a~i6 t>~ /4 u /

Plant Manager

Commitments: None

Cc : K. Banovac, USNRC DFM D. Sargis, USNRC RIil PM 24-005