ML22073A003
| ML22073A003 | |
| Person / Time | |
|---|---|
| Site: | Erwin |
| Issue date: | 02/21/2022 |
| From: | Knowles T BWXT Nuclear Fuel Services, Nuclear Fuel Services |
| To: | Document Control Desk, Office of Nuclear Material Safety and Safeguards |
| References | |
| 21 G-22-0022, ACF-22-0041, GOV-01-55 | |
| Download: ML22073A003 (14) | |
Text
Nuclear Fuel Services, Inc.
Certified Mail 21 G-22-0022 Return Receipt Requested GOV-01-55 ACF-22-0041 February 21, 2022 Director Office of Nuclear Material Safety & Safeguards U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555-0001
Reference:
Docket No.70-143; SNM License 124
Subject:
Biannual Effluent Monitoring Report July to December 2021
Dear Director:
I I
I In accordance with the requirements set forth in 10 CFR Part 70.59, Nuclear Fuel Services, Inc. (NFS), submits the attached reports. Attachment 1 reports the Radioactivity in Effluent Liquid for the period July to December 2021. Attachment 2 reports the Radioactivity in Effluent Air for the period July to December 2021. Attachment 3 summarizes an evaluation of the dose and air activity concentrations for the maximally exposed offsite individual due to gaseous effluents during the period July to December 2021.
If you or your staff have any questions, require additional information, or wish to discuss this, please contact me or Mr. R. Jason Faddis, Environmental Safety Unit Manager, at (423) 735-5438. Please reference our unique document identification number (21 G 0022) in any correspondence concerning this letter.
Sincerely, NUCLEAR FUEL SERVICES, INC.
Tim Knowles
~FJtg CJB/las Safety & Safeguards Director /VA/55 zo Attachments ;vtvf55
- 1) Report of Radioactivity in Effluent Liquid for the Period July to December 2021
- 2) Report of Radioactivity in Effluent Air for the Period July to December 2021
- 3) Report of Gaseous Effluent Dose and Activity Concentrations for the Maximally Exposed Off-Site Individual for the Release Period July to December 2021 1205 Banner Hill Rd, Erwin, TN 37650 Page 1 of 14 Pe o p le S tr o n g t: +1.423.743.9141 f: +1.423.743.0140 www.nuclearfuelservices.com INNOVATION DRIVEN }
21G-22-0022 GOV-01-55 ACF-22-0041 Copy:
Mr. Joel Rivera-Ortiz Senior Fuel Facility Inspector U. S. Nuclear Regulatory Commission Region II 245 Peachtree Center Ave., NE Suite 1200 Atlanta, GA 30303-1257 Regional Administrator U. S. Nuclear Regulatory Commission Region II 245 Peachtree Center Ave., NE Suite 1200 Atlanta, GA 30303-1257 Mr. James Downs Senior Project Manager Division of Fuel Management Office of Nuclear Material Safety and Safeguards U.S. Nuclear Regulatory Commission Two White Flint North 11555 Rockville Pike Rockville, MD 20852-2738 Dr. Robert Williams Chief, Projects Branch 1 U.S. Nuclear Regulatory Commission
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Region II 245 Peachtree Center Ave., NE Suite 1200 Atlanta, GA 30303-1257 Mr. Larry Harris Senior Resident Inspector U. S. Nuclear Regulatory Commission Page 2 of 14
21 G-22-0022 GOV-01-55 ACF-22-0041 Attachment 1 To Letter Dated February 21, 2022 Report of Radioactivity in Effluent Liquid for the Period July to December 2021 (2 Pages to Follow)
Page 3 of 14
21 G-22-0022 GOV-01-55 ACF-22-0041 Radioactivity in Effluent Liquid July 1, 2021 to December 31, 2021 Total Activity Error Quantity Quantity Fraction Volume Concentration Estimate LLD Released Released of 1
Location (I) (µCi/ml) (µCi/ml) (µCi/ml) (Ci) (g) ECV Banner Spring Down Pu-238 424,680,000 O.OOE+OO 9.47E-l l 2.33E-10 O.OOE+OO O.OOE+OO O.OOE+OO Pu-239/240 424,680,000 O.OOE+oO l.lSE-10 2.56E-10 O.OOE+OO O.OOE+OO O.OOE+OO Tc-99 424,680,000 O.OOE+OO 3.66E-08 6.46E-08 O.OOE+OO O.OOE+OO O.OOE+OO Th-228 424,680,000 O.OOE+OO l.38E-10 3.13E-10 O.OOE+OO O.OOE+OO O.OOE+OO Th-230 424,680,000 l.93E-10 2.04E-10 3.22E-10 8.22E-05 4.07E-03 1.93E-03 Th-232 424,680,000 O.OOE+OO l.02E-10 2.22E-10 O.OOE+OO O.OOE+OO O.OOE+OO U-233/234 424,680,000 2.79E-10 2.42E-10 3.33E-10 l.19E-04 l.90E-02 9.31E-04 U-235/236 424,680,000 3.61E-ll l.37E-10 2.35E-10 l.53E-05 7.09E+OO 1.20E-04 U-238 424,680,000 7.13E-ll 1.62E-10 2.SOE-10 3.03E-05 9.04E+Ol 2.38E-04 Total: 3.22E-03 Sewer Pu-238 22,595,000 l.09E-ll l.67E-10 3.SOE-10 2.47E-07 l.44E-08 5.46E-05 Pu-239/240 22,595,000 O.OOE+OO l.33E-10 3.70E-IO O.OOE+OO O.OOE+OO O.OOE+OO Tc-99 22,595,000 2.0IE-11 3.73E-08 6.SIE-08 4.54E-07 2.68E-05 3.35E-08 Th-228 22,595,000 O.OOE+OO l.67E-10 4.25E-10 O.OOE+OO O.OOE+OO O.OOE+OO Th-230 22,595,000 3.0SE-11 2.0SE-10 4.23E-10 6.95E-07 3.44E-05 3.0SE-05 Th-232 22,595,000 O.OOE+OO l.lSE-10 2.70E-10 O.OOE+OO O.OOE+OO O.OOE+OO U-232 22,595,000 O.OOE+OO 1.42E-10 3.29E-10 O.OOE+OO O.OOE+OO O.OOE+OO U-233/234 22,595,000 8.16E-09 8.91E-10 2.07E-10 l.84E-04 2.95E-02 2.72E-03 U-235/236 22,595,000 3.43E-10 l.95E-IO 1.52E-10 7.76E-06 3.59E+OO 1.14E-04 U-238 22,595,000 l.OSE-09 3.27E-10 l.74E-IO 2.37E-05 7.0SE+Ol 3.SOE-04 Total: 3.27E-03 West Ditch Pu-238 132,492,000 O.OOE+OO 1.13E-10 2.61E-10 O.OOE+OO 0.00E+OO O.OOE+OO Pu-239/240 132,492,000 4.27E-13 l.21E-10 2.73E-10 5.66E-08 9.IOE-07 2.14E-05 Tc-99 132,492,000 O.OOE+OO 3.60E-08 6.33E-08 O.OOE+OO O.OOE+OO O.OOE+OO Th-228 132,492,000 O.OOE+OO l.lSE-10 2.35E-10 O.OOE+OO O.OOE+OO O.OOE+OO Th-230 132,492,000 l.31E-10 1.54E-10 2.48E-10 l.74E-05 8.62E-04 1.3 IE-03 Th-232 132,492,000 l.17E-l 1 7.49E-l l I.SOE-IO l.SSE-06 1.42E+Ol 3.89E-04 *- -
U-233/234 132,492,000 l.25E-08 l.25E-09 3.25E-10 l.66E-03 2.66E-Ol 4.17E-02 'I U-235/236 132,492,000 4.13E-10 2.60E-10 l.89E-10 5.47E-05 2.53E+Ol l.38E-03 U-238 132,492,000 1.24E-09 4.09E-10 2.69E-10 l.64E-04 4.90E+02 4.13E-03 Total: 4.89E-02 WWTF Am-241 3,372,750 4.29E-l l l.44E-10 2.60E-10 l.45E-07 4.22E-08 2.ISE-03 Cs-137 3,372,750 4.12E-10 l.OSE-09 l.74E-09 l.39E-06 l.59E-08 4.12E-04 Na-22 3,372,750 O.OOE+OO 9.48E-IO l.68E-09 O.OOE+OO O.OOE+OO O.OOE+OO Np-237 3,372,750 O.OOE+OO 2.03E-10 4.36E-10 O.OOE+OO 0.00E+OO O.OOE+OO Pb-212 3,372,750 O.OOE+OO 3.37E-09 3.30E-09 O.OOE+OO 0.00E+OO O.OOE+OO Pu-238 3,372,750 O.OOE+OO 5.86E-ll 1.40E-IO O.OOE+OO 0.00E+OO O.OOE+OO ECV: Effluent Concentration Value from 10-CFR-20, Appendix B.
Note: A value of no* was substituted for negative analytical results.
Printed: 02/10/2022 NFS-EDMS Page I of2 Page 4 of 14
21G-22-0022 GOV-01-55 ACF-22-0041 Radioactivity in Effluent Liquid July 1, 2021 to December 31, 2021 Total Activity Error Quantity Quantity Fraction Volume Concentration Estimate LLD Released Released of 1
Location (I) (µCi/ml) (µCi/ml) (µCi/ml) (Ci) (g) ECV WWTF Pu-239/240 3,372,7SO 9.89E-12 6.SIE-11 l.38E-10 3.33E-08 S.36E-07 4.94E-04 Pu-241 3,372,7SO l.43E-09 9.48E-09 l.63E-08 4.83E-06 4.69E-08 l.43E-03 Ra-224 3,372,7SO l.60E-08 9.SSE-09 l.72E-08 S.39E-OS 3.39E-10 8.00E-02 Tc-99 3,372,7SO O.OOE+OO l.21E-07 2.0SE-07 O.OOE+OO O.OOE+OO O.OOE+OO Th-228 3,372,7SO O.OOE+OO 1.0SE-10 2.6SE-10 O.OOE+OO O.OOE+OO O.OOE+OO Th-230 3,372,7SO 1.31E-!O !.73E-IO 2.98E-10 4.42E-07 2.19E-OS 1.3 IE-03 Th-231 3,372,7SO O.OOE+OO 3.4SE-08 4.09E-08 O.OOE+OO O.OOE+OO O.OOE+OO Th-232 3,372,7SO 7.44E-12 8.71E-ll l.82E-10 2.SIE-08 2.30E-Ol 2.48E-04 U-232 3,372,7SO O.OOE+OO 1.19E-10 2.SSE-10 O.OOE+OO O.OOE+OO O.OOE+OO U-233/234 3,372,7SO 4.S9E-09 S.97E-10 l.62E-10 I.SSE-OS 2.48E-03 ! .53E-02 U-23S/236 3,372,7SO 2.49E-!O I.SOE-IO l.27E-10 8.39E-07 3.88E-01 8.29E-04 U-238 3,372,7SO 7. IOE-11 9:34E-ll l.36E-10 2.39E-07 7.14E-01 2.37E-04 Total: 1.02E-0l ECV: Effluent Concentration Value from 1O*CFR-20, Appendix B.
Note: A value of "O" was substituted for negative analytical results.
Printed: 02/10/2022 NFS-EDMS Page 2 of2 Page 5 of 14
21 G-22-0022
- .J GOV-01-55 ACF-22-0041 Attachment 2 To Letter Dated February 21, 2022 Report of Radioactivity in Effluent Air for the Period July to December 2021 (3 Pages to Follow)
Page 6 of 14
21G-22-0022 GOV-01-55 ACF-22-0041 Radioactivity in Effluent Air July 1, 2021 to December 31, 2021 Total Activity Error Quantity Quantity Fraction Volume Concentration Estimate LLD Released Released of 1
Location (m3) (µCi/ml) (µCi/ml) (µCi/ml) (Ci) (g) ECV Main Stack 416 3 1067.53 m /min 17.79 m3/sec Th-228 282,843,006 7.06E-16 1.46E-16 8.28E-17 2.00E-07 2.44E-10 3.53E-02 Th-230 282,843,006 7.06E-16 l.46E-16 8.28E-17 2.00E-07 9.88E-06 3.53E-02 Th-232 282,843,006 5.29E-16 l.09E-16 6.21E-17 l.SOE-07 1.37E+OO l.32E-01 U-234 282,843,006 l.66E-!3 3.44E-14 l.95E-14 4.71E-05 7.54E-03 3.33E+OO U-235 282,843,006 6.35E-15 1.31E-15 7.46E-16 1.80E-06 8.32E-01 1.06E-01 U-238 282,843,006 l.76E-15 3.64E-16 2.07E-16 4.99E-07 1.49E+OO 2.94E-02 Total: 3.67E+00 Stack 185 Bldg. 131 3 3 109.81 m /min 1.83 m /sec Pu-241 29,095,985 3. ISE-16 8.56E-16 1.56E-15 9.16E-09 8.89E-ll 3.93E-04 Tc-99 29,095,985 1.02E-14 2.77E-!4 5.0SE-14 2.96E-07 1.75E-05 1.13E-05 U-234 29,095,985 1.82E-15 7.89E-15 1.87E-14 5.30E-08 8.49E-06 3.64E-02 U-235 29,095,985 5.63E-17 2.44E-16 5.78E-16 l.64E-09 7.58E-04 9.38E-04 Total: 3.77E-02 Stack 234 Bldg. 234 3 348.95 m /min 5.82 m3/sec Am-241 91,452,434 2.35E-17 2.38E-17 4.42E-17 2.14E-09 6.25E-IO 1.17E-03 Pu-238 91,452,434 2.87E-17 2.91E-17 5.41E-17 2.62E-09 l.53E-10 l.43E-03 Pu-239/240 91,452,434 1.02E-16 1.03E-16 1.92E-16 9.29E-09 l.49E-07 5.0SE-03 Pu-241 91,452,434 l.lSE-15 4.06E-15 7.20E-15 l.OSE-07 1.02E-09 1.43E-03 Th-228 91,452,434 l.56E-17 l.59E-17 2.95E-17 l.43E-09 l.75E-12 7.82E-04 Th-230 91,452,434 l.95E-16 l.99E-16 3.69E-16 l.79E-08 8.85E-07 9.77E-03 Th-232 91,452,434 2.48E-!6 2.SIE-16 4.67E-16 2.26E-08 2.0SE-01 6.19E-02 U-234 91,452,434 5.34E-16 5.43E-16 l.OIE-15 4.88E-08 7.83E-06 l.07E-02 U-238 91,452,434 1.56E-16 1.59E-!6 2.95E-16 1.43E-08 4.27E-02 2.61E-03 Total: 9.48E-02 3
Stack 327 Bldg. 330 988.82 m /min 16.48 m3/sec Pu-241 26 I ,998,9 I 4 2.12E-15 4.87E-16 7. l 7E-16 5.54E-07 5.38E-09 2.65E-03 Tc-99 261,998,914 6.84E-14 l.57E-14 2.32E-14 l.79E-05 1.06E-03 7.60E-05 U-234 261,998,914 8.25E-14 l.OSE-14 8.65E-15 2.16E-05 3.46E-03 l.65E+OO \
U-235 261,998,914 2.SSE-15 3.35E-16 2.68E-16 6.68E-07 3.09E-01 4.25E-02 '
Total: 1.69E+00 ""
3 Stack 421 Bldg. 100 30.53 m /min 0.51 m3/sec Pu-241 8,064,811 3.72E-15 1.42E-15 2.14E-15 3.00E-08 2.92E-10 4.65E-03 Tc-99 8,064,811 l.20E-13 4.58E-14 6.92E-14 9.71E-07 5.75E-05 1.34E-04 U-234 8,064,811 2.08E-14 l.57E-14 2.38E-14 l.67E-07 2.68E-05 4. ISE-01 U-235 8,064,811 6.42E-16 4.86E-16 7.37E-16 5.ISE-09 2.40E-03 l.07E-02 Total: 4.31E-01 3
Stack 424 Bldg. 100 32.99 m /min 0.55 m3/sec Pu-241 8,739,291 l.49E-15 l.03E-15 l.57E-15 l.30E-08 l.26E-10 l.86E-03 Tc-99 8,739,291 4.81E-14 3.34E-14 5.07E-14 4.20E-07 2.49E-05 5.34E-05 ECV: Effluent Concentration Value from 10-CFR-20, Appendix B. Fraction of ECVat the stack is provided for reference only. Concentrations at off-site locations are significantly less than those reported here (al stack) due to the atmospheric dispersion that occurs before the effluent exits the site.
Note: A value of "0" was substituted for negative analytical results.
Printed: 02/10/2022 NFS-EDMS Page I of3 Page 7 of 14
21 G-22-0022 GOV-01-55 ACF-22-0041 Radioactivity in Effluent Air July 1, 2021 to December 31, 2021 Total Activity Error Quantity Quantity Fraction Volume Concentration Estimate LLD Released Released of 1
Location (m3) (µCi/ml) (µCi/ml) (µCi/ml) (Ci) (g) ECV 3
Stack 424 Bldg. 100 32.99 m /min 0.55 m3tsec U-234 8,739,291 3.l lE-14 l.46E-14 l.88E-14 2.72E-07 4.36E-05 6.23E-01 U-235 8,739,291 9.63E-16 4.5\E-16 5.82E-16 8.42E-09 3.90E-03 l.60E-02 Total: 6.41E-01 3 3 Stack 573 Bldg 306-W 116.43 m /min 1.94 m /sec Pu-241 30,745,099 1.17E-16 7.56E-16 I.46E-15 3.61E-09 3.50E-l 1 1.47E-04 Tc-99 30,745,099 3.79E-15 2.44E-14 4.71E-14 1.17E-07 6.90E-06 4.21E-06 U-234 30,745,099 0.00E+00 6.29E-15 1.75E-14 0.00E+00 0.00E+00 0.00E+00 U-235 30,745,099 0.00E+00 l.95E-16 5.42E-16 0.00E+00 0.00E+00 0.00E+00 Total: I.5IE-04 3 3 Stack 600 Bldg. 110 315.14 m /min 5.25 m /sec Pu-241 83,502,204 1.97E-15 6.l 7E-16 9.69E-16 l.64E-07 l.59E-09 2.46E-03 Tc-99 83,502;204 6.36E-14 l.99E-14 3.13E-14 5.3 IE-06 3.14E-04 7.06E-05 U-234 83,502,204 6.50E-14 9.60E-15 l.22E-14 5.43E-06 8.70E-04 1.30E+00 U-235 83,502,204 2.0IE-15 2.97E-16 3.77E-16 l.68E-07 7.77E-02 3.35E-02 Total: I.34E+00 3 3 Stack 615 Bldg. 306-W 48.99 m /min 0.82 m /sec Pu-241 12,979,900 2.33E-16 8.38E-16 l.55E-15 3.03E-09 2.94E-ll 2.91E-04 Tc-99 12,979,900 7.54E-15 2.7\E-14 5.02E-14 9.78E-08 5.79E-06 8.37E-06 U-234 12,979,900 l.09E-16 7.27E-15 l.86E-14 l.42E-09 2.27E-07 2.18E-03 U-235 12,979,900 3.38E-18 2.25E-16 5.74E-16 4.38E-1 l 2.03E-05 5.63E-05 Total: 2.54E-03 Stack 646 Bldg. 110 36.64 mo/min 0.61 m3tsec Pu-241 9,709,685 2.86E-16 8.42E-16 l.56E-15 2.78E-09 2.70E-11 3.58E-04 Tc-99 9,709,685 9.26E-15 2.72E-14 5.03E-14 8.99E-08 5.32E-06 l.03E-05 U-234 9,709,685 1.22E-16 7.17E-15 1.87E-14 1.19E-09 1.90E-07 2.45E-03 U-235 9,709,685 3.78E-18 2.22E-16 5.77E-16 3.67E-l 1 1.70E-05 6.30E-05 Total: 2.88E-03 3
Stack 701 Bldg. 307 124.57 m /min 2.08 m3tsec Pu-241 32,963,206 l.81E-16 9.38E-16 l.77E-15 5.97E-09 5.80E-ll 2.27E-04 "
Tc-99 32,963,206 5.86E-15 3.03E-14 5.71E-14 l.93E-07 l.14E-05 6.SIE-06 U-234 32,963,206 l.94E-15 9.20E-15 2.12E-14 6.38E-08 1.02E-05 3.87E-02 U-235 32,963,206 5.99E-17 2.84E-16 6.57E-16 l.97E-09 9.14E-04 9.98E-04 Total: 4.00E-02 3
Stack 702 Bldg. 307 156.93 m /min 2.62 m3tsec Pu-241 41,592,442 I.79E-16 8.25E-16 l.5SE-15 7.44E-09 7.22E-11 2.23E-04 Tc-99 41,592,442 5.78E-15 2.67E-14 5.0lE-14 2.40E-07 l.42E-05 6.42E-06 U-234 41,592,442 4.83E-15 8.99E-15 l.87E-14 2.0IE-07 3.22E-05 9.65E-02 ECV; Effluent Concentration Value from 1O-CFR-20, Appendix B. Fraction of ECV at the stack is provided for reference only. Concentrations at off-site locations are slgnlflcantly less than those reported here (at stack) due to the atmospheric dispersion that occurs before !he effluent exits the site.
Note: A value of *a~ was substituted for negative analytical resulls.
Printed: 02/10/2022 NFS-EDMS Page 2 of3 Page 8 of 14
21 G-22-0022 GOV-01-55 ACF-22-0041 Radioactivity in Effluent Air July 1~ 2021 to December 31, 2021 Total Activity Er,ror Quantity Quantity Fraction Volume Concentration Estimate LLD Released
- Released of 1
Location (ma) (µCi/ml) (µCi/ml) (µCi/ml) (Ci) (g) ECV Stack 702 Bldg. 307 156.93 m3/min 2.62 m3tsec U-235 41,592,442 1.49E-16 2.78E-16 5.77E-16 6.21E-09 2.87E-03 2.49E-03 Total: 9.92E-02 Stack 703 Exhaust Room Air 769.55 m3/min 12.83 m3tsec i>u-241 203,922,953 4.99E-15 2.44E-14 4.62E-14 1.02E-06 9.89E-09 6.24E-03 Th-228 203,922,953 6.95E-17 6.98E-16 1.7IE-15 1.42E-08 1.73E-11 3.48E-03 Th-230 203,922,953 4.00E-17 4.02E-16 9.82E-16 8.16E-09 4.04E-07 2.00E-03 Th-232 203,922,953 5.69E-17 5.71E-16 1.40E-15 1.16E-08 1.06E-Ol l.42E-02 U-234 203,922,953 4.35E-16 4.37E-15 1.07E-14 8.88E-08 1.42E-05 8.7JE-03 U-235 203,922,953 4.49E-l 7 4.5IE-16 1.!0E-15 9. I 7E-09 4.24E-03 7.49E-04 U-238 203,922,953 5.48E-17 5.SOE-16 l.34E-15 l.12E-08 3.33E-02 9.13E-04 Total: 3.63E-02 3
Stack 773 Bldg. 440 163.42 m /min 2.72 m3tsec Pu-241 43,298,847 3.55E-15 3.43E-14 6.55E-14 1.54E-07 1.49E-09 4.44E-03 Th-228 43,298,847 O.OOE+OO 1.24E-15 3.38E-15 O.OOE+OO O.OOE+OO O.OOE+OO Th-230 43,298,847 O.OOE+OO 1.60E-15 4.34E-15 O.OOE+OO O.OOE+OO O.OOE+OO Th-232 43,298,847 O.OOE+OO 1.07E-I 5 2.90E-15 O.OOE+OO O.OOE+OO O.OOE+OO U-234 43,298,847 O.OOE+OO 3.29E-15 8.93E-15 O.OOE+OO O.OOE+OO O.OOE+OO U-235 43,298,847 O.OOE+OO 5.77E-16 l.57E-15 O.OOE+OO O.OOE+OO O.OOE+OO U-238 43,298,847 O.OOE+OO 1.15E-15 3.14E-15 O.OOE+OO O.OOE+OO O.OOE+OO Total: 4.44E-03 3
Stack 774 Bldg. 301 309.42 m /min 5.16 m3tsec Th-228 82,002,372 O.OOE+OO 1.82E-16 4.42E-16 O.OOE+OO O.OOE+OO O.OOE+OO Th-230 82,002,372 O.OOE+OO 6.21E-16 l.5JE-15 O.OOE+OO O.OOE+OO O.OOE+OO Th-232 82,002,372 O.OOE+OO 3.68E-16 8.93E-16 O.OOE+OO O.OOE+OO O.OOE+OO U-234 82,002,372 O.OOE+OO 1.66E-15 4.03E-15 O.OOE+OO O.OOE+OO O.OOE+OO U-235 82,002,372 O.OOE+OO 1.0SE-16 2.62E-16 O.OOE+OO O.OOE+OO O.OOE+OO U-238 82,002,372 O.OOE+OO 7.SIE-16 l.90E-15 O.OOE+OO O.OOE+OO O.OOE+OO
\
Total: 0.00E+00 ',
3 3 Stack 796 Bldg. 100 18.37 m /min 0.31 m /sec Pu-241 4,869,461 8.41E-16 9.27E-16 l.5SE-15 4.!0E-09 3.98E-11 l.05E-03 Tc-99 4,869,461 2.72E-14 3.00E-14 5.02E-14 l.32E-07 7.84E-06 3.02E-05 U-234 4,869,461 2.24E-16 7.20E-15 l.86E-14 1.09E-09 1.75E-07 4.49E-03 U-235 4,869,461 6.94E-18 2.23E-16 5.76E-16 3.38E-11 1.56E-05 l.16E-04 Total: 5.69E-03 ECV: Effluent Concentration Value from 10-CFR-20, Appendix B. Fraction of ECV at the stack is provided for reference only. Concentrations at off-site locations are significantly less than those reported here (at stack) due to the atmospheric dispersion that occurs before the effluent exits the site.
Note: A value of "O" was substituted for negative analytical results.
Printed: 02/10/2022 NFS-EDMS Page 3 of3 Page 9 of 14
21 G-22-0022 GOV-01-55 ACF-22-0041 Attachment 3 To Letter Dated February 21, 2022 Report of Gaseous Effluent Dose and Activity Concentrations for the Maximally Exposed Off-Site Individual for the Release Period July to December 2021 (4 Pages to Follow)
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21 G-22-0022 GOV-01-55 ACF-22-0041 Report of Potential Gaseous Effluent Dose to the Maximally Exposed Offsite Individual and on the Maximum Radionuclide Concentrations for the Period:
July to December 2021 Introduction During this biannual period, NRC License SNM-124, Section 9.1.1.3, required NFS to assess the total effective dose equivalent (TEDE) to the maximally exposed offsite receptor and the maximum radioactive air concentrations at the site boundary attributable to NFS' air effluents. The required biannual assessment has been completed and the details of the assessment are provided in the subsequent sections.
Summary of Methods In accordance with SNM-124, Section 9.1.1.4, and internal procedure NFS-HS-A-27, the U.S. Department of Energy's CAP88-PC computer program was used to estimate off-site doses and activity concentrations for gaseous effluents. NFS operated sixteen (16) radiological stacks during the second half of 2021. Based on effluent types and.
stack physical characteristics, releases from these stacks were grouped into effective stacks for modeling purposes. To accommodate the co-location limitation of the model, the effective stacks were taken to be at the approximate center of the plant site. The distance to the site boundary (nearest model receptor distance) was conservatively taken to be 150 meters for all sectors.
Meteorological data was based on the average wind speed and direction frequencies from the onsite meteorological tower covering the time period for this report.
Atmospheric stability class D (neutral atmosphere) was used for all releases (default value recommended by the U.S. Environmental Protection Agency in "User's Guide for COMPLY"). The most conservative inhalation class was assumed for each radionuclide released. A particle size (activity median aerodynamic diameter or AMAD) of 1.0 micron was assumed for modeling purposes since no information on actual particle sizes exists.
Because CAP88-PC models releases over an entire year, the six-month source term (i.e., total curies of each radionuclide released over the period, given in Attachment 2) was annualized (i.e., transformed into a 12-month release) so that airborne activity concentrations would not be under-estimated during the release period.
Summary of Results Doses are reported in Table 1 below and are derived from the CAP88-PC "Synopsis Report." These doses are at the location of the maximally exposed (off-site) individual (MEI). The results include an adjustment (using the normalization factor mentioned above) to convert the "annualized" doses back to those doses that were actually received in the six-month release period. Activity concentrations reported in Table 2 come directly from the CAP88-PC "Concentration Tables" report; no adjustments are needed for these concentrations. The CAP88-PC output reports are available for Page 11 of 14
21 G-22-0022 GOV-01-55 ACF-22-0041 review at NFS.
Table 1 summarizes the six-month dose to a hypothetical individual at the MEI location, which was determined to be approximately 550 meters North-Northeast from the center of the plant site. The TEDE to the MEI was estimated to be 3. 7E-03 mrem for gaseous effluents released during the second half of 2021. The highest organ committed dose equivalent (COE) to the MEI was estimated to be 1.9E-02 mrem to the lungs. These MEI doses are well below the Environmental Radiological Monitoring Program action levels and applicable regulatory limits/ALARA constraints.
Table 1. Organ Doses and Total Effective Dose Equivalent at the MEI Location Organ Committed Dose Equivalent (mrem per second half of 2021)
Adrenals 2.6E-04 Urinary Bladder Wall 3.0E-04 Bone Surface 1.0E-02 Brain 2.6E-04 Breasts 2.7E-04 Stomach Wall 4.6E-03 Small Intestine 2.9E-04 Upper Large Intestine Wall 1.4E-03 Lower Large Intestine Wall 3.5E-03 Kidneys 3.2E-03 Liver 8.7E-04 Muscle 2.7E-04 Ovaries 2.7E-04 Pancreas 2.6E-04 Red Bone Marrow 1.3E-03 Skin 5.4E-04 Spleen 2.6E-04 Testes 2.9E-04 Thymus 2.6E-04 Thyroid 2.4E-03 Gall Bladder Wall 2.6E-04 Heart Wall 2.6E-04 Uterus 2.6E-04 Extra-thoracic 1.7E-02 Lungs 1.9E-02 Total Effective Dose Equivalent 3.7E-03 mrem Location of MEI: 550 meters North-Northeast Page 12 of 14
218-22-0022 GOV-01-55 ACF-22-0041 Table 2 summarizes the maximum radioactive air concentrations at or beyond the site boundary, as determined by CAP88-PC, for the radionuclides released. The total sum of fractions was estimated to be 6.3E-04 and indicates that exposures to the offsite public from gaseous effluents were much less than 1% of the 10 CFR 20, Appendix B, Table 2, Col. 1 values for all offsite receptors including the site boundary. It is noted that the location of the maximum airborne concentration for a given radionuclide does not necessarily correspond to the MEI location. This is due primarily to the fact that the maximum concentrations for individual nuclides can vary due to differences in values input into the dispersion model for each of the effective stacks - such inputs include stack height, stack diameter, flow rate, and total radionuclide activities released per stack. Another reason for the disparity is the fact that the MEI dose includes both inhalation and ingestion pathways.
Table 2. Maximum Predicted Airborne Concentrations at or Beyond the Site Boundary Maximum Predicted Airborne Concentrations at or Beyond the Site Boundary Maximum Concentration 10 CFR 20, App. B, Ratio of Maximum Nuclide Concentration location Table 2, Col. 1 Value Concentration to
(µCi/ mL) Sector Dist (m) (I.ICi/mL) IO CFR 20 Value 99Tc l.9E-17 NNE 450 9.E-10 2.JE-08 22sTh 230Th 232Th
- 6.0E-20 6.9E-20 NNE NNE 750 700 2.E-14 2.E-14 3.0E-06 3.4E-06 6.2E-20 NNE 600 4.E-15 l .6E-05
- 234 u NNE 600
- 5.E-14 5.9E-04 2.9E-17
- 23su 9.9E-19 NNE 600 6.E-14 l .6E-05 23su l.4E-19 NNE 750 6.E-14 2.4E-06
- 23s Pu 4.7E-21 NNE 300 2.E-14 2.4E-07 239Pu l.7E-20 NNE 300 2.E-14 8.4E-07 24'Pu l.5E-l 8 NNE 450
-- 8.E-13 l.9E-06 z4 1Am 3.9E-21 NNE 300 2.E-14 \.9E-07 Sum of Fractions: 6.3E--04 Page 13 of 14
21 G-22-0022 GOV-01-55 ACF-22-0041 The TEDE to the MEI for gaseous effluents released during 2021 is provided in Table 3.
The results for the 1st half of 2021 were previously reported in Biannual Effluent Monitoring Report January to June 2021 (21G-21-0103). The annual dose is well below the Environmental Radiological Monitoring Program action levels and applicable regulatory limits/ALARA constraints.
Table 3. Annual Dose to the MEI for Gaseous Effluents Released During 2021 Period Distance TEDE Direction Covered (m) (mrem) 2nd Half NNE 550 3.7E-03 1st Half NNE 550 3.2E-03 Annual Total 6.9E-03 Page 14 of 14