ML20262H065
| ML20262H065 | |
| Person / Time | |
|---|---|
| Site: | Erwin |
| Issue date: | 08/20/2020 |
| From: | Freudenberger R Nuclear Fuel Services |
| To: | Document Control Desk, Office of Nuclear Material Safety and Safeguards |
| References | |
| 21G-20-0084, ACF-20-0220, GOV-01-55 | |
| Download: ML20262H065 (13) | |
Text
-*
BW_
Nuclear Fuel Services, Inc.
21 G-20-0084 GOV-01-55 ACF-20-0220 August 20, 2020 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 January to June 2020
Dear Sir:
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 January to June 2020. Attachment 2 reports the Radioactivity in Effluent Air for the period January fo June 2020. 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 January to June 2020.
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 0084) in any correspondence concerning this letter.
CJB/pj Attachments Sincerely, NUCLEAR FUEL SERVICES, INC.
7CLJ /~-v--
Richard J. Freudenberger Safety & Safeguards Director
- 1) Report of Radioactivity in Effluent Liquid for the Period January to June 2020
- 2) Report of Radioactivity in Effluent Air for the Period January to June 2020
- 3) Report of G'aseous Effluent Dose and Activity Concentrations for the Maximally Exposed Off-Site Individual for the Release Period January to June 2020 Page 1 of 13 1205 Banner Hill Rd, Erwin, TN 37650 t: +1.423.743.9141 f: + 1.423.743.0140 www.nuclearfuelservices.com People Strong INNOVATION DRIVEN >
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 Technical Program 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 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 of13 21 G-20-0084 GOV-01-55 ACF-20-0220 To Letter Dated August 20, 2020 Report of Radioactivity in Effluent Liquid for the Period January to June 2020 (2 Pages to Follow)
Page 3 ofl3 21 G-20-0084 GOV-01-55 ACF-20-0220
21 G-20-0084 GOV-01-55 Radioactivity in Effluent Liquid ACF-20-0220 January 1, 2020 to June 30, 2020 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-238 537,955,000 4.73E-12 l.35E-10 2.92E-10 2.SSE-06 l.49E-07 2.37E-04 Pu-239/240 537,955,000 O.OOE+OO l.37E-10 3.34E-10 O.OOE+OO O.OOE+OO O.OOE+OO Tc-99 537,955,000 O.OOE+OO 4.0SE-08 7.34E-08 O.OOE+OO O.OOE+OO O.OOE+OO Th-228 537,955,000 O.OOE+OO l.43E-10 3.16E-IO O.OOE+OO O.OOE+OO O.OOE+OO Th-230 537,955,000
- 3. IOE-11 l.SIE-10 3.07E-10 l.67E-05 8.25E-04 3.IOE-04 Th-232 537,955,000 8.82E-13 9.69E-11 2.12E-10 4.74E-07 4.35E+OO 2.94E-05 U-233/234 537,955,000 6.54E-10 3.0IE-10 2.86E-10 3.52E-04 5.64E-02 2.ISE-03 U-235/236 537,955,000 l.24E-10 l.36E-10 1.55E-IO 6.67E-05 3.09E+Ol 4.14E-04 U-238 537,955,000 l.28E-10 1.59E-10 2.IOE-10 6.87E-05 2.05E+02 4.25E-04 Total:
3.60E-03 Sewer Pu-238 35,961,000 O.OOE+OO 8.19E-11 1.84E-10 O.OOE+OO O.OOE+OO O.OOE+OO Pu-239/240 35,961,000 O.OOE+OO 8.87E-11 2.17E-10 O.OOE+OO O.OOE+OO O.OOE+OO Tc-99 35,961,000 O.OOE+OO 4.27E-08 7.49E-08 O.OOE+OO O.OOE+OO O.OOE+OO Th-228 35,961,000 l.77E-11 l.98E-10 3.88E-10 6.38E-07 7.79E-10 8.87E-06 Th-230 35,961,000 l.49E-11 l.79E-IO 3.84E-10 5.37E-07 2.66E-05 1.49E-05 Th-232 35,961,000 8.73E-12 l.31E-10 2.SIE-10 3.14E-07 2.88E+OO 2.91E-05 U-232 35,961,000 O.OOE+OO l.19E-10 2.84E-10 O.OOE+OO O.OOE+OO O.OOE+OO U-233/234 35,961,000 1.69E-08 l.29E-09 2.37E-10 6.0SE-04 9.74E-02 5.63E-03 U-235/236 35,961,000 6.33E-10 2.61E-10 1.64E-10 2.28E-05 l.OSE+Ol 2.IIE-04 U-238 35,961,000 2.ISE-09 4.69E-10 1.79E-10 7.84E-05 2.34E+02 7.26E-04 Total:
6.62E-03 West Ditch Pu-238 199,567,000 l.34E-12 l.18E-10 2.52E-10 2.67E-07 l.56E-08 6.68E-05 Pu-239/240 199,567,000 3.29E-12 l.13E-10 2.52E-10 6.57E-07 l.06E-05
!.65E-04 Tc-99 199,567,000 O.OOE+OO 4.ISE-08 7.33E-08 O.OOE+OO O.OOE+OO O.OOE+OO Th-228 199,567,000 O.OOE+OO 1.41E-10 3.30E-10 O.OOE+OO O.OOE+OO O.OOE+OO Th-230 199,567,000 4.20E-l I l.59E-10 3.22E-IO 8.38E-06 4.ISE-04 4.20E-04 Th-232 199,567,000 l.62E-11 l.lSE-10 2.35E-10 3.23E-06 2.96E+Ol 5.39E-04 U-233/234 199,567,000 1.64E-08 l.48E-09 3.09E-IO 3.28E-03 5.25E-Ol 5.47E-02 U-235/236 199,567,000 6.12E-10 3.37E-10 2.52E-10 l.22E-04 5.66E+Ol 2.04E-03 U-238 199,567,000 l.69E-09 4.86E-10 2.36E-IO 3.37E-04 l.OIE+03 5.63E-03 Total:
6.36E-02 WWTF Am-241 4,320,076 2.21E-11 6.89E-ll 1.26E-10 9.55E-08 2.78E-08
- 1. llE-03 Cs-137 4,320,076 2.99E-10 1.12E-09 1.43E-09 1.29E-06 l.49E-08 2.99E-04 Na-22 4,320,076 2.78E-l l 8.l lE-10 1.47E-09 1.20E-07 1.92E-11 4.63E-06 Np-237 4,320,076 O.OOE+OO 1.41E-10 3.38E-IO O.OOE+OO O.OOE+OO O.OOE+OO Pb-212 4,320,076 9.24E-10 3.23E-09 2.85E-09 3.99E-06 2.89E-12 4.62E-04 Pu-238 4,320,076 1.84E-11 7.46E-l 1 1.47E-IO 7.94E-08 4.64E-09 9.19E-04 ECV: Effluent Concentration Value from 10-CFR-20, Appendix B.
Note: A value of *a* was substituted for negative analytlcal results.
Printed: 08/13/2020 NFS-EDMS Page I of2 Page 4 of 13
Radioactivity in Effluent Liquid January 1, 2020 to June 30, 2020 Total Activity Volume Concentration Location (I)
(µCi/ml)
WWTF Pu-239/240 4,320,076 3.00E-11 Pu-241 4,320,076 0.00E+00 Ra-224 4,320,076 1.13E-08 Tc-99 4,320,076 0.00E+00 Th-228 4,320,076 5.75E-12 Th-230 4,320,076 1.04E-10 Th-231 4,320,076 0.00E+00 Th-232 4,320,076 2.90E-ll U-232 4,320,076 0.00E+00 U-233/234 4,320,076 2.19E-08 U-235/236 4,320,076 8.66E-10 U-238 4,320,076 1.66E-10 ECV: Effluent Concentration Value from 10-CFR-20, Appendix B.
Note: A value of "O" was substituted for negative analytical results.
Printed: 08/13/2020 Error Quantity Estimate LLD Released
(µCi/ml)
(µCi/ml)
(Ci) 7.30E-11 l.32E-10 l.30E-07 9.89E-09 l.71E-08 0.00E+00 6.09E-09 l.07E-08 4.89E-05 1.55E-07 2.68E-07 0.00E+00 l.50E-10 3.35E-10 2.48E-08 l.97E-10 3.39E-10 4.SIE-07 4.09E-08 4.26E-08 0.00E+00 1.15E-10 2.25E-10 l.25E-07 9.69E-11 2.13E-10 0.00E+00 1.24E-09 l.36E-10 9.45E-05 2.55E-10 l.41E-10 3.74E-06 1.23E-I0 l.32E-10 7.ISE-07 NFS-EDMS Page 5 of 13 21 G-20-0084 GOV-01-55 ACF-20-0220 Quantity Fraction Released of (g)
ECV 1
2.0SE-06 1.S0E-03 0.00E+00 0.00E+00 3.0?E-10 5.66E-02 0.00E+00 0.00E+00 3.03E-ll 2.88E-05 2.23E-05 l.04E-03 0.00E+00 0.00E+00 1.15E+00 9.66E-04 0.00E+00 0.00E+00 l.51E-02 7.29E-02 l.73E+00 2.89E-03 2.14E+00 5.54E-04 Total:
1.39E-01 Page 2 of2 To Letter Dated August 20, 2020 Report of Radioactivity in Effluent Air for the Period January to June 2020 (3 Pages to Follow)
Page 6 ofl3 21 G-20-0084 GOV-01-55 ACF-20-0220
Total Volume Location (m3)
Main Stack 416 Th-228 274,011,560 Th-230 274,011,560 U-234 274,011,560 U-235 274,011,560 U-238 274,011,560 Stack 185 Bldg. 131 Pu-241 28,248,980 Tc-99 28,248,980 U-234 28,248,980 U-235 28,248,980 Stack 234 Bldg. 234 Am-241 78,949,575 Pu-238 78,949,575 Pu-239/240 78,949,575 Pu-241 78,949,575 Th-228 78,949,575 Th-230 78,949,575 Th-232 78,949,575 U-234 78,949,575 U-238 78,949,575 Stack 327 Bldg. 330 Pu-241 274,568,278 Tc-99 274,568,278 U-234 274,568,278 U-235 274,568,278 Stack 421 Bldg. 100 Pu-241 9,046,540 Tc-99 9,046,540 U-234 9,046,540 U-235 9,046,540 Stack 424 Bldg. 100 Pu-241 8,705,161 Tc-99 8,705,161 U-234 8,705,161 Radioactivity in Effluent Air January 1, 2020 to June 30, 2020 Activity Error Quantity Concentration Estimate LLD Released
(µCi/ml)
(µCi/ml)
(µCi/ml)
(Ci) 1045.53 m3/min 17.43 m3/sec 5.94E-!6 l.18E-16 6.39E-17 l.63E-07 7.92E-!6 l.57E-16 8.52E-17 2.17E-07 l.87E-13 3.71E-14 2.0IE-14 5.12E-05 7.52E-15 1.49E-15 8.IOE-16 2.06E-06 2.ISE-15 4.32E-16 2.34E-16 5.97E-07 107.79 m3/min 1.80 m3/sec O.OOE+OO 8.75E-16 1.74E-15 O.OOE+OO O.OOE+OO 2.83E-14 5.63E-14 O.OOE+OO O.OOE+OO 7.47E-15 2.IOE-14 O.OOE+OO O.OOE+OO 2.3 IE-16 6.48E-16 O.OOE+OO 300.20 m3/min 5.00 m3/sec 3.0IE-17 2.70E-17 4.SIE-17 2.38E-09 3.68E-17 3.30E-l 7 5.88E-17 2.91E-09 l.31E-16 l.17E-16 2.0SE-16 l.03E-08 O.OOE+OO 4.24E-15 7.86E-15 O.OOE+OO 2.0IE-17 l.80E-17 3.20E-17 l.59E-09 2.SIE-16 2.25E-16 4.0IE-16 l.98E-08 3.ISE-16 2.85E-16 5.07E-16 2.SIE-08 6.87E-16 6.16E-16 l.09E-15 5.42E-08 2.0IE-16 l.80E-16 3.20E-16 l.59E-08 1047.68 m3/min 17.46 m3/sec l.20E-15 4.77E-16 7.44E-16 3.29E-07 3.88E-14 1.54E-14 2.41E-14 1.07E-05 8.41E-14 1.IOE-14 9.24E-15 2.31E-05 2.60E-15 3.39E-16 2.86E-16 7.14E-07 34.52 m3/min 0.58 m3/sec 4.35E-15 l.47E-15 2.ISE-15 3.94E-08 l.41E-13 4.74E-14 6.97E-14 1.27E-06 l.07E-13 2.60E-14 2.44E-14 9.71E-07 3.32E-15 8.06E-16 7.56E-16 3.00E-08 33.22 m3/min 0.55 m3/sec 4.74E-16 9.75E-16 1.74E-15 4.12E-09 l.53E-14 3.ISE-14 5.61E-14 1.33E-07 7.45E-15 l.17E-14 2.09E-14 6.49E-08 21 G-20-0084 GOV-01-55 ACF-20-0220 Quantity Fraction Released of (g)
ECV 1
l.99E-10 2.97E-02 l.07E-05 3.96E-02 8.21E-03 3.74E+OO 9.54E-01 l.25E-01 l.78E+OO 3.63E-02 Total:
3.97E+00 O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO Total:
0.00E+00 6.94E-10 1.51E-03 1.70E-10 l.84E-03 1.66E-07 6.53E-03 O.OOE+OO O.OOE+OO 1.94E-12 l.OOE-03 9.82E-07 l.26E-02 2.31E-01 7.96E-02 8.69E-06 1.37E-02 4.74E-02 3.35E-03 Total:
l.20E-0l 3.20E-09 l.SOE-03 6.30E-04 4.31E-05 3.70E-03 l.68E+OO 3.31E-01 4.33E-02 Total:
I.73E+00 3.82E-10 5.44E-03 7.54E-05 1.56E-04 l.56E-04 2.15E+OO 1.39E-02 5.53E-02 Total:
2.21E+00 4.00E-11 5.92E-04 7.89E-06 l.70E-05 l.04E-05 l.49E-01 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 slgnificantly 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: 08/13/2020 NFS-EDMS Page I of3 Page 7 of13
Total Volume Location (m3)
Stack 424 Bldg. 100 U-235 8,705,161 Stack 573 Bldg 306-W Pu-241 20,685,513 Tc-99 20,685,513 U-234 20,685,513 U-235 20,685,513 Stack 600 Bldg. 110 Pu-241 80,661,893 Tc-99 80,661,893 U-234 80,661,893 U-235 80,661,893 Stack 615 Bldg. 306-W Pu-241 13,703,801 Tc-99 13,703,801 U-234 13,703,801 U-235 13,703,801 Stack 646 Bldg. 110 Pu-241 11,688,516 Tc-99 11,688,516 U-234 11,688,516 U-235 11,688,516 Stack 701 Bldg. 307 Pu-241 30,004,235 Tc-99 30,004,235 U-234 30,004,235 U-235 30,004,235 Stack 702 Bldg. 307 Pu-241 42,620,411 Tc-99 42,620,411 U-234 42,620,411 U-235 42,620,411 Radioactivity in Effluent Air January 1, 2020 to June 30, 2020 Activity Error Quantity Concentration Estimate LLD Released
(µCi/ml)
(µCi/ml)
(µCi/ml)
(Ci) 33.22 m3/min 0.55 m3/sec 2.30E-16 3.61E-16 6.47E-16 2.0IE-09 79.07 m3/min 1.32 m3/sec O.OOE+OO 7.90E-16 l.62E-15 O.OOE+OO O.OOE+OO 2.SSE-14 5.24E-14 O.OOE+OO O.OOE+OO 6.32E-15 l.99E-14 O.OOE+OO O.OOE+OO l.95E-16 6.ISE-16 O.OOE+OO 307.78 m3/min 5.13 m3/sec 4.65E-16 5.59E-16 l.02E-15 3.75E-08 l.SOE-14 l.81E-14 3.28E-14 l.21E-06 2.73E-14 8.26E-15 1.30E-14 2.20E-06 8.44E-16 2.55E-16 4.03E-16 6.SIE-08 52.29 m3/min 0.87 m3/sec O.OOE+OO 8.35E-16 l.74E-15 O.OOE+OO O.OOE+OO 2.70E-14 5.62E-14 O.OOE+OO O.OOE+OO 6.60E-15 2.09E-14 O.OOE+OO O.OOE+OO 2.04E-16 6.47E-16 O.OOE+OO 44.60 m3/min 0.74 m3/sec O.OOE+OO 8.65E-16 l.75E-15 O.OOE+OO O.OOE+OO 2.SOE-14 5.65E-14 O.OOE+OO O.OOE+OO 7.0JE-15 2.IOE-14 O.OOE+OO O.OOE+OO 2.l 7E-16 6.SJE-16 O.OOE+OO 114.49 m3/min 1.91 m3/sec O.OOE+OO 9.63E-16 l.98E-15 O.OOE+OO O.OOE+OO 3.12E-14 6.42E-14 O.OOE+OO 4.96E-15 l.OIE-14 2.39E-14 l.49E-07 l.53E-16 3.12E-16 7.39E-16 4.60E-09 162.62 m3/min 2.71 m3/sec O.OOE+OO 8.32E-16 l.74E-15 O.OOE+OO O.OOE+OO 2.69E-14 5.62E-14 O.OOE+OO O.OOE+OO 7.73E-15 2.09E-14 O.OOE+OO O.OOE+OO 2.39E-16 6.47E-16 O.OOE+OO 21 G-20-0084 GOV-01-55 ACF-20-0220 Quantity Fraction Released of (g)
ECV 1
9.29E-04 3.84E-03 Total:
l.53E-0l O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO Total:
0.00E+00 3.64E-10 5.SIE-04 7.17E-05 l.67E-05 3.53E-04 5.46E-01 3.ISE-02 l.41E-02 Total:
5.60E-0l O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO Total:
0.00E+00 O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO Total:
0.00E+00 O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO 2.38E-05 9.92E-02 2.13E-03 2.56E-03 Total:
l.02E-0l O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO Total:
0.00E+00 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 locatlons are slgnlflcantly 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: 08/13/2020 NFS-EDMS Page 2 of3 Page 8 of 13
Total Volume Location (m3)
Stsck 703 Exhaust Room Air Pu-241 207,642,767 Th-228 207,642,767 Th-230 207,642,767 Th-232 207,642,767 U-234 207,642,767 U-235 207,642,767 U-238 207,642,767 Stack 773 Bldg. 440 Pu-241 46,958,190 Th-228 46,958,190 Th-230 46,958,190 Th-232 46,958,190 U-234 46,958,190 U-235 46,958,190 U-238 46,958,190 Stack 774 Bldg. 301 Th-228 84,483,852 Th-230 84,483,852 Th-232 84,483,852 U-234 84,483,852 U-235 84,483,852 U-238 84,483,852 Stack 796 Bldg. 100 Pu-241 5,068,734 Tc-99 5,068,734 U-234 5,068,734 U-235 5,068,734
\\
Radfoadivity in Effluent Air January 19 2020 to Jmne 30, 2020 Activity Error Quantity Concentration Estimate LLD Released
(µCi/ml)
(µCi/ml)
(µCi/ml)
(Ci) 792.29 m3/min 13.20 m3/sec O.OOE+OO 2.44E-14 5.15E-14 O.OOE+OO O.OOE+OO 7.28E-16 l.90E-15 O.OOE+OO O.OOE+OO 4.19E-16 l.09E-15 O.OOE+OO O.OOE+OO 5.96E-16 l.55E-15 O.OOE+OO O.OOE+OO 4.56E-15 l.19E-14 O.OOE+OO O.OOE+OO 4.71E-16 l.23E-15 O.OOE+OO O.OOE+OO 5.74E-16 l.49E-15 O.OOE+OO 178.56 m3/min 2.98 m3/sec O.OOE+OO 3.37E-14 6.95E-14 O.OOE+OO O.OOE+OO l.19E-15 3.60E-15 O.OOE+OO O.OOE+OO l.53E-15 4.63E-15 O.OOE+OO O.OOE+OO l.02E-15 3.09E-15 O.OOE+OO O.OOE+OO 3.15E-15 9.52E-15 O.OOE+OO O.OOE+OO 5.53E-16 l.67E-15 O.OOE+OO O.OOE+OO 1.l lE-15 3.35E-15 O.OOE+OO 322.36 m3/min 5.37 m3tsec O.OOE+OO l.59E-16 4.56E-16 O.OOE+OO O.OOE+OO 5.42E-16 l.55E-15 O.OOE+OO O.OOE+OO 3.21E-16 9.21E-16 O.OOE+OO O.OOE+OO l.45E-15 4.15E-15 O.OOE+OO O.OOE+OO 9.42E-17 2.70E-16 O.OOE+OO O.OOE+OO 6.82E-16 1.95E-15 O.OOE+OO 19.34 m3/min 0.32 m3tsec 7.45E-17 9.09E-16 1.74E-15 3.78E-10 2.41E-15 2.94E-14 5.62E-14 1.22E-08 O.OOE+OO 7.07E-15 2.09E-14 O.OOE+OO O.OOE+OO 2.19E-16 6.47E-16 O.OOE+OO 21 G-20-0084 GOV-01-55 ACF-20-0220 Quantity Fraction Released of (g)
ECV 1
O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO Total:
0.00E+00 O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO Total:
0.00E+00 O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO Total:
0.00E+00 3.67E-12 9.31E-05 7.23E-07 2.68E-06 O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO Total:
9.58E-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 (at stack) due to the atmospheric dispersion that occurs before the effluent exits the site.
Note: A value of *o* was substituted for negative analytlcal results.
Printed: 08/13/2020 NFS-EDMS Page 3 of3 Page 9 of13
To Letter Dated August 20, 2020 21 G-20-0084 GOV-01-55 ACF-20-0220 Report of Gaseous Effluent Dose and Activity Concentrations for the Maximally Exposed Off-Site Individual for the Release Period January to June 2020 (3 Pages to Follow)
Page 10 ofl3
21 G-20-0084 GOV-01-55 ACF-20-0220 Report of Potential Gaseous Effluent Dose to the Maximally Exposed Offsite Individual and on the Maximum Radionuclide Concentrations for the Period:
January to June 2020 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 first half of 2020. 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 on-site 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 review at NFS.
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21 G-20-0084 GOV-01-55 ACF-20-0220 Table 1 summarizes the six-month dose to a hypothetical individual at the MEI location, which was determined to be approximately 500 meters Northeast from the center of the plant site. The TEDE to the MEI was estimated to be 2.6E-03 mrem for gaseous effluents released during the first of 2020. The highest organ committed dose equivalent (COE) to the MEI was estimated to be 1.5E-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 Adrenals Urinary Bladder Wall Bone Surface Brain Breasts Stomach Wall Small Intestine Upper Large Intestine Wall Lower Large Intestine Wall Kidneys Liver Muscle Ovaries Pancreas Red Bone Marrow Skin Spleen Testes Thymus Thyroid Gall Bladder Wall Heart Wall Uterus Extra-thoracic Lungs Total Effective Dose Equivalent Location of MEI:
Page 12 ofl3 Committed Dose Equivalent (mrem per first half of 2020) 1.7E-04 1.9E-04 7.?E-03 1.?E-04 1.8E-04 2.0E-03 2.0E-04 7.2E-04 1.?E-03 2.5E-03 6.2E-04 1.8E-04 1.8E-04 1.7E-04 9.6E-04 3.9E-04 1.?E-04 1.9E-04 1.7E-04 1.1 E-03 1.?E-04 1.?E-04 1.?E-04 1.3E-02 1.5E-02 2.6E-03 mrem 500 meters Northeast
'I :II 21 G-20-0084 GOV-01-55 ACF-20-0220 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 5.1 E-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 Be~ond the Site Boundary 10 CFR 20, Ratio of Maximum Concentration Maximum Nuclide Concentration Location App. B, Table Concentration (1,1Ci/ml) 2, Col. 1 Value to 10 CFR 20 Sector Dist. (m)
(1,1Ci/ml)
Value ggTc 8.4E-18 NE 400 9.E-10 9.3E-09 22sTh 3.4E-20 NE 700 2.E-14 1.7E-06 230Th 5.6E-20 NE 650 2.E-14 2.8E-06 232Th 4.5E-20 NE 200 4.E-15 1.1 E-05 234LJ 2.4E-17 NE 550 5.E-14 4.7E-04 235LJ 8.1 E-19 NE 550 6.E-14 1.4E-05 23BLJ 1.3E-19 NE 700 6.E-14 2.2E-06 23Bpu 5.3E-21 NE 200 2.E-14 2.6E-07 239pu 1.9E-20 NE 200 2.E-14 9.4E-07 241Pu 2.6E-19 NE 400 8.E-13 3.2E-07 241Am 4.3E-21 NE 200 2.E-14 2.2E-07 Sum of Fractions:
5.1E-04 Page 13 ofl3
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