ML19058A122
| ML19058A122 | |
| Person / Time | |
|---|---|
| Site: | Erwin |
| Issue date: | 02/20/2019 |
| From: | Freudenberger R BWXT Nuclear Fuel Services |
| To: | Office of Nuclear Material Safety and Safeguards |
| References | |
| 21G-19-0025, ACF-19-0052, GOV-01-55 | |
| Download: ML19058A122 (14) | |
Text
Nuclear Fuel Services, Inc.
Director Office of Nuclear Material Safety & Safeguards U.S. Nuclear Regulatory Commission ATIN: Document Control Desk Washington, DC 20555-0001
Reference:
Docket No.70-143; SNM License 124 21 G-19-0025 GOV-01-55 ACF-19-0052 February 20, 2019
Subject:
Biannual Effluent Monitoring Report July to December 2018
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 July to December 2018. Attachment 2 reports the Radioactivity in Effluent Air for the period July to December 2018. 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 2018.
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 (21G 0025) in any correspondence concerning this letter.
Sincerely, NUCLEAR FUEL SERVICES, INC.
Richard J. Freudenberger Safety & Safeguards Director CJB/pj Attachments
- 1) Report of Radioactivity in Effluent Liquid for the Period July to December 2018
- 2) Report of Radioactivity in Effluent Air for the Period July to December 2018
- 3) Report of Gaseous Effluent Dose and Activity Concentrations for the Maximally Exposed Off-Site Individual for the Release Period July to December 2018 Page 1 of14 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. Leonard Pitts 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. Kevin Ramsey Senior Project Manager Fuel Manufacturing Branch Division of Fuel Cycle Safety, Safeguards, and Environmental Review Office of Nuclear Material Safety and Safeguards U. S. Nuclear Regulatory Commission Two White Flint North 11555 Rockville Pike Rockville, MD 20852-2738 Mr. Omar Lopez 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 of14 21 G-19-0025 GOV-01-55 ACF-19-0052 To Letter Dated February 20, 2019 Report of Radioactivity in Effluent Liquid for the Period July to December 2018 (2 Pages to Follow)
Page3 of14 21 G-19-0025 GOV-01-55 ACF-19-0052
Radioactivity in Effluent Liquid July 1, 2018 to December 31, 2018 Total Activity Error Quantity Quantity Fraction Volume Concentration Estimate LLD Released Released of Location (I)
(µCi/ml)
(µCi/ml)
(µCi/ml) 1 (Ci)
(g)
ECV Banner Spring Down Pu-238 535,730,000 O.OOE+OO l.lOE-10 2.88E-10 O.OOE+OO O.OOE+OO O.OOE+OO Pu-239/240 535,730,000 2.85E-ll l.36E-10 2.SlE-10 l.53E-05 2.46E-04 l.43E-03 Tc-99 535,730,000 O.OOE+OO 3.67E-08 6.47E-08 O.OOE+OO O.OOE+OO O.OOE+OO Th-228 535,730,000 O.OOE+OO l.27E-10 3.lOE-10 O.OOE+OO O.OOE+OO O.OOE+OO Th-230 535,730,000 2.24E-ll l.33E-10 2.72E-10 l.20E-05 5.93E-04 2.24E-04 Th-232 535,730,000 2.42E-ll l.03E-10 l.95E-10 l.29E-05 l.19E+02 8.06E-04 U-233/234 535,730,000 9.56E-10 3.61E-10 3.14E-10 5.12E-04 8.21E-02 3.19E-03 U-235/236 535,730,000 l.09E-10 l.70E-10 2.45E-10 5.82E-05 2.69E+Ol 3.62E-04 U-238 535,730,000 l.52E-10 l.92E-10 2.82E-10 8.16E-05 2.44E+02 5.0&E-04 Total:
6.SlE-03 Sewer Pu-238 44,502,000 O.OOE+OO 8.37E-ll 2.03E-10 O.OOE+OO O.OOE+OO O.OOE+OO Pu-239/240 44,502,000 O.OOE+OO 6.58E-ll l.84E-10 O.OOE+OO O.OOE+OO O.OOE+OO Tc-99 44,502,000 O.OOE+OO 4.03E-08 7.0SE-08 O.OOE+OO O.OOE+OO O.OOE+OO Th-228 44,502,000 O.OOE+OO l.39E-10 3.lOE-10 O.OOE+OO O.OOE+OO O.OOE+OO Th-230 44,502,000 2.35E-ll l.SOE-10 3.07E-10 l.OSE-06 5.l&E-05 2.35E-05 Th-232 44,502,000 7.58E-ll l.43E-10 2.07E-10 3.37E-06 3.09E+Ol 2.53E,04 U-232 44,502,000 0.00E+OO 7.29E-11 l.67E-10 O.OOE+OO O.OOE+OO O.OOE+OO U-233/234 44,502,000 l.26E-08 9.89E-10 l.34E-10 5.60E-04 8.98E-02 4.20E-03 U-235/236 44,502,000 4.41E-10 l.89E-10 I.l&E-10 l.96E-05 9.08E+OO l.47E-04 U-238 44,502,000 l.86E-09 3.83E-10 I.l&E-10 8.30E-05 2.48E+02 6.22E-04 Total:
5.24E-03 West Ditch Pu-238 177,171,000 2.42E-ll l.21E-10 2.38E-10 4.29E-06 2.51E-07 l.21E-03 Pu-239/240 177,171,000 O.OOE+OO l.06E-10 2.SlE-10 O.OOE+OO O.OOE+OO O.OOE+OO Tc-99 177,171,000 O.OOE+OO 3.70E-08 6.SlE-08 O.OOE+OO O.OOE+OO O.OOE+OO Th-228 177,171,000 O.OOE+OO l.36E-10 3.43E-10 O.OOE+OO O.OOE+OO O.OOE+OO Th-230 177,171,000 6.48E-ll l.72E-10 3.32E-10 l.lSE-05 5.69E-04 6.48E-04 Th-232 177,171,000 7.37E-ll l.48E-10 2.54E-10 l.31E-05 l.20E+02 2.46E-03 U-233/234 177,171,000 l.46E-08 l.47E-09 3.l 7E-10 2.S&E-03 4.13E-01 4.&SE-02 U-235/236 177,171,000 6.49E-10 3.54E-10 2.30E-10 l.lSE-04 5.33E+Ol 2.16E-03 U-238 177,171,000 l.68E-09 5.12E-10 2.72E-10 2.97E-04 8.86E+02 5.59E-03 Total:
6.06E-02 WWTF Am-241 3,743,014 2.27E-ll 7.&0E-11 l.31E-10 8.49E-08 2.48E-08 1.13E-03 Cs-137 3,743,014 O.OOE+OO l.20E-09 l.SlE-09 O.OOE+OO O.OOE+OO O.OOE+OO Na-22 3,743,014 O.OOE+OO 7.63E-10 l.36E-09 O.OOE+OO O.OOE+OO O.OOE+OO Np-237 3,743,014 5.64E-ll 2.00E-10 3.89E-10 2.llE-07 3.00E-04 2.82E-03 Pb-212 3,743,014 7.97E-10 3.06E-09 2.68E-09 2.98E-06 2.16E-12 3.98E-04 Pu-238 3,743,014 O.OOE+OO 7.23E-ll l.62E-10 O.OOE+OO O.OOE+OO O.OOE+OO ECV: Effluent Concentration Value from 10-CFR-20, Appendix B.
Note: A value of "0" was substituted for negative analytical results.
Printed: 02/13/2019 NFS-EDMS Page I of2 Page 4 of14
Radioactivity in Effluent Liquid July 1, 2018 to December 31, 2018 Total Activity Volume Concentration Location (1)
(µCi/ml)
WWTF Pu-239/240 3,743,014 O.OOE+OO Pu-241 3,743,014 O.OOE+OO Ra-224 3,743,014 l.09E-08 Tc-99 3,743,014 O.OOE+OO Th-228 3,743,014 O.OOE+OO Th-230 3,743,014 9.40E-11 Th-231 3,743,014 O.OOE+OO Th-232 3,743,014 2.17E-11 U-232 3,743,014 4.81E-12 U-233/234 3,743,014 l.42E-08 U-235/236 3,743,014 6.71E-10 U-238 3,743,014 2.29E-10 ECV: Effluent Concentration Value from 1 O-CFR*20, Appendix B.
Note: A value of no" was substituted for negative analytical results.
Printed: 02/13/2019 Error Quantity Estimate LLD Released
(µCi/ml)
(µCi/ml)
(Ci) 7.31E-ll 1.84E-IO O.OOE+OO l.06E-08 l.86E-08 O.OOE+OO 7.l 7E-09 1.22E-08 4.06E-05 9.lSE-08 1.57E-07 O.OOE+OO l.25E-10 2.84E-IO O.OOE+OO l.78E-10 3.07E-10 3.52E-07 3.80E-08 3.91E-08 O.OOE+OO 1.llE-10 1.95E-10 8.13E-08 8.24E-11 1.79E-10 1.80E-08 9.66E-10 1.33E-10 5.30E-05 2.21E-10 1.00E-10 2.SlE-06 l.29E-10 1.0SE-10 8.58E-07 NFS-EDMS Page 5 of14 Quantity Fraction Released of (g)
ECV 1
0.00E+OO O.OOE+OO O.OOE+OO O.OOE+OO 2.56E-10 5.43E-02 O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO 1.74E-05 9.40E-04 O.OOE+OO O.OOE+OO 7.46E-Ol 7.24E-04 8.41E-10 8.0lE-05 8.49E-03 4.72E-02 l.16E+OO 2.24E-03 2.56E+OO 7.64E-04 Total:
1.llE-01 Page2 of2 To Letter Dated February 20, 2019 Report of Radioactivity in Effluent Air for the Period July to December 2018 (3 Pages to Follow)
Page 6 of14 21 G-19-0025 GOV-01-55 ACF-19-0052
Total Volume Location (m3)
Main Stack 416 Th-230 282,444,540 U-234 282,444,540 U-235 282,444,540 U-238 282,444,540 Stack 185 Bldg. 131 Pu-241 29,073,068 Tc-99 29,073,068 U-234 29,073,068 U-235 29,073,068 Stack 234 Bldg. 234 Am-241 80,697,001 Pu-238 80,697,001 Pu-239/240 80,697,001 Pu-241 80,697,001 Th-228 80,697,001 Th-230 80,697,001 Th-232 80,697,001 U-234 80,697,001 U-238 80,697,001 Stack 327 Bldg. 330 Pu-241 275,937,668 Tc-99 275,937,668 U-234 275,937,668 U-235 275,937,668 Stack 421 Bldg. 100 Pu-241 9,174,415 Tc-99 9,174,415 U-234 9,174,415 U-235 9,174,415 Stack 424 Bldg. 100 Pu-241 8,839,805 Tc-99 8,839,805 U-234 8,839,805 1
Radioactivity in Effluent Air July 1, 2018 to December 31, 2018 Activity Error Quantity Concentration Estimate LLD Released
(µCi/ml)
(µCi/ml)
(µCi/ml)
(Ci) 1059.74 m3/min 17.66 m3/sec 5.SOE-16 l.24E-I6 8.20E-17 l.SSE-07 l.25E-I3 2.82E-14 l.87E-I4 3.54E-05 7.70E-15 l.73E-I5 l.lSE-15 2.I8E-06 3.85E-I5 8.66E-16 5.74E-I6 l.09E-06 109.13 m3/min 1.82 m3tsec O.OOE+OO 8.52E-16 1.7IE-15 O.OOE+OO O.OOE+OO 2.75E-14 5.53E-14 O.OOE+OO 1.32E-I5 7.62E-I5 2.0IE-14 3.83E-08 4.08E-17 2.36E-16 6.22E-I6 1.19E-09 296.51 m3/min 4.94 m3tsec O.OOE+OO l.96E-17 4.72E-I7 O.OOE+OO O.OOE+OO 2.40E-17 5.76E-17 O.OOE+OO O.OOE+OO 8.SIE-17 2.04E-I6 O.OOE+OO O.OOE+OO 3.99E-15 7.86E-I5 O.OOE+OO O.OOE+OO l.3IE-17 3.I4E-17 O.OOE+OO O.OOE+OO l.64E-16 3.93E-I6 O.OOE+OO O.OOE+OO 2.07E-I6 4.98E-I6 O.OOE+OO O.OOE+OO 4.47E-16 l.07E-I5 O.OOE+OO O.OOE+OO 1.3IE-16 3.14E-I6 O.OOE+OO 1035.80 m 3/min 17.26 m3/sec l.20E-I5 4.83E-I6 7.82E-I6 3.30E-07 3.87E-I4 l.56E-14 2.53E-I4 l.07E-05 7.39E-I4 l.02E-14 9.24E-I5 2.04E-05 2.29E-I5 3.14E-I6 2.86E-16 6.3IE-07 34.35 m3/min 0.57 m3tsec 3.18E-I5 1.37E-I5 2.1 IE-15 2.9IE-08 l.03E-13 4.44E-I4 6.82E-I4 9.42E-07 l.90E-13 2.73E-I4 2.30E-I4 l.75E-06 5.89E-I5 8.43E-I6 7.IIE-16 5.4IE-08 33.20 m 3/min 0.55 m3/sec 1.3IE-15 l.03E-I5 l.67E-I5 l.16E-08 4.24E-I4 3.33E-I4 5.40E-I4 3.75E-07 8.78E-I4 l.74E-I4 l.95E-I4 7.76E-07 Quantity Released (g) 7.69E-06 5.68E-03 l.OIE+OO 3.25E+OO Total:
O.OOE+OO O.OOE+OO 6.I4E-06 5.49E-04 Total:
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:
3.20E-09 6.3IE-04 3.27E-03 2.92E-01 Total:
2.83E-I0 5.57E-05 2.80E-04 2.50E-02 Total:
1.13E-I0 2.22E-05 l.24E-04 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 "0" was substituted for negative analytical results.
Printed: 02/13/2019 NFS-EDMS Page 7 of14 Fraction of ECV 1
2.75E-02 2.SIE+OO l.28E-0I 6.42E-02 2.73E+OO O.OOE+OO O.OOE+OO 2.64E-02 6.79E-04 2.70E-02 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 l.SOE-03 4.30E-05 l.48E+OO 3.8IE-02 1.52E+OO 3.97E-03 1.14E-04 3.8IE+OO 9.82E-02 3.91E+OO l.64E-03 4.7IE-05 l.76E+OO Page I of3
Total Volume Location (m3)
Stack 424 Bldg. 100 U-235 8,839,805 Stack 573 Bldg 306-W Pu-241 19,430,134 Tc-99 19,430,134 U-234 19,430,134 U-235 19,430,134 Stack 600 Bldg. 110 Pu-241 81,306,117 Tc-99 81,306,117 U-234 81,306,117 U-235 81,306,117 Stack 615 Bldg. 306-W Pu-241 12,979,289 Tc-99 12,979,289 U-234 12,979,289 U-235 12,979,289 Stack 646 Bldg. 110 Pu-241 10,527,167 Tc-99 10,527,167 U-234 10,527,167 U-235 10,527,167 Stack 701 Bldg. 307 Pu-241 32,012,752 Tc-99 32,012,752 U-234 32,012,752 U-235 32,012,752 Stack 702 Bldg. 307 Pu-241 43,724,673 Tc-99 43,724,673 U-234 43,724,673 U-235 43,724,673 Radioactivity in Effluent Air July 1, 2018 to December 31, 2018 Activity Error Quantity Concentration Estimate LLD Released
(µCi/ml)
(µCi/ml)
(µCi/ml)
(Ci) 33.20 m3/min 0.55 m3tsec 2.71E-15 5.38E-16 6.04E-16 2.40E-08 72.82 m3/min 1.21 m3tsec O.OOE+OO 8.47E-16 l.67E-15 O.OOE+OO O.OOE+OO 2.74E-14 5.41E-14 O.OOE+OO 5.56E-16 7.97E-15 l.96E-14 l.08E-08 l.72E-l 7 2.46E-16 6.08E-16 3.34E-10 304.87 m3/min 5.08 m3tsec 4.33E-15 6.90E-16 l.03E-15 3.52E-07 l.40E-13 2.23E-14 3.33E-14 l.14E-05 l.30E-13 l.24E-14 l.25E-14 l.06E-05 4.03E-15 3.82E-16 3.87E-16 3.28E-07 48.89 m3/min 0.81 m3tsec O.OOE+OO 7.97E-16 l.67E-15 O.OOE+OO O.OOE+OO 2.58E-14 5.39E-14 O.OOE+OO O.OOE+OO 7.46E-15 l.97E-14 O.OOE+OO O.OOE+OO 2.31E-16 6.08E-16 O.OOE+OO 39.45 m3/min 0.66 m3tsec O.OOE+OO 7.99E-16 l.66E-15 O.OOE+OO O.OOE+OO 2.58E-14 5.37E-14 O.OOE+OO O.OOE+OO 6.94E-15 l.95E-14 O.OOE+OO O.OOE+OO 2.lSE-16 6.02E-16 O.OOE+OO 120.08 m3/min 2.00 m3/sec O.OOE+OO 9.06E-16 l.88E-15 O.OOE+OO O.OOE+OO 2.93E-14 6.09E-14 O.OOE+OO O.OOE+OO 7.89E-15 2.22E-14 O.OOE+OO O.OOE+OO 2.44E-16 6.87E-16 O.OOE+OO 164.17 m3/min 2.74 m3tsec O.OOE+OO.
8.14E-16 l.65E-15 O.OOE+OO O.OOE+OO 2.63E-14 5.35E-14 O.OOE+OO 8.75E-15 9.30E-15 l.95E-14 3.83E-07 2.71E-16 2.88E-16 6.04E-16 l.18E-08 Quantity Released (g) l.llE-02 Total:
O.OOE+OO O.OOE+OO l.73E-06 l.SSE-04 Total:
3.41E-09 6.73E-04 l.70E-03 l.52E-Ol Total:
O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO Total:
O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO Total:
O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO Total:
O.OOE+OO O.OOE+OO 6.13E-05 5.48E-03 Total:
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 ~a" was substituted for negative analytical results.
Printed: 02/13/2019 NFS-EDMS Page 8 of14 Fraction of ECV 1
4.52E-02 1.80E+OO O.OOE+OO O.OOE+OO l.llE-02 2.87E-04 1.14E-02 5.41E-03 l.SSE-04 2.61E+OO 6.72E-02 2.68E+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 O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO l.75E-Ol 4.SlE-03 1.80E-01 Page2 of3
Total Volume Location (ma)
Stack 703 Exhaust Room Air Pu-241 217,791,531 Th-228 217,791,531 Th-230 217,791,531 Th-232 217,791,531 U-234 217,791,531 U-235 217,791,531 U-238 217,791,531 Stack 773 Bldg. 440 Pu-241 47,358,776 Th-228 47,358,776 Th-230 47,358,776 Th-232 47,358,776 U-234 47,358,776 U-235 47,358,776 U-238 47,358,776 Stack 774 Bldg. 301 Th-228 87,049,739 Th-230 87,049,739 Th-232 87,049,739 U-234 87,049,739 U-235 87,049,739 U-238 87,049,739 Stack 796 Bldg. 100 Pu-241 5,122,640 Tc-99 5,122,640 U-234 5,122,640 U-235 5,122,640 1
Radioactivity in Effluent Air July 1, 2018 to December 31, 2018 Activity Error Quantity Concentration Estimate LLD Released
(µCi/ml)
(µCi/ml)
(µCi/ml)
(Ci) 817.54 m3/min 13.63 m3/sec O.OOE+OO 2.35E-14 4.92E-14 O.OOE+OO O.OOE+OO 7.08E-16 l.77E-15 O.OOE+OO O.OOE+OO 4.08E-16 1.02E-15 O.OOE+OO O.OOE+OO 5.79E-16 1.45E-15 O.OOE+OO O.OOE+OO 4.43E-15 l.llE-14 O.OOE+OO O.OOE+OO 4.58E-16 l.lSE-15 O.OOE+OO O.OOE+OO 5.58E-16 1.40E-15 O.OOE+OO 177.77 m3/min 2.96 m3/sec O.OOE+OO 3.37E-14 6.97E-14 O.OOE+OO O.OOE+OO l.llE-15 3.53E-15 O.OOE+OO O.OOE+OO 1.43E-15 4.54E-15 O.OOE+OO O.OOE+OO 9.54E-16 3.03E-15 O.OOE+OO O.OOE+OO 2.94E-15 9.34E-15 O.OOE+OO O.OOE+OO 5.17E-16 1.64E-15 O.OOE+OO O.OOE+OO 1.03E-15 3.28E-15 O.OOE+OO 326.68 m3/min 5.44 m3/sec O.OOE+OO 1.66E-16 4.55E-16 O.OOE+OO O.OOE+OO 5.66E-16 l.55E-15 O.OOE+OO O.OOE+OO 3.35E-16 9.19E-16 O.OOE+OO O.OOE+OO 1.SlE-15 4.14E-15 O.OOE+OO O.OOE+OO 9.83E-17 2.69E-16 O.OOE+OO O.OOE+OO 7.12E-16 1.95E-15 O.OOE+OO 19.19 m3/min 0.32 m3/sec 1.81E-16 9.00E-16 1.69E-15 9.29E-10 5.86E-15 2.91E-14 5.45E-14 3.00E-08 O.OOE+OO 7.12E-15 1.98E-14 O.OOE+OO O.OOE+OO 2.20E-16 6.12E-16 O.OOE+OO Quantity Released (g)
O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO Total:
O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO Total:
O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO Total:
9.02E-12 1.78E-06 O.OOE+OO O.OOE+OO Total:
ECV: Effluent Concentration Value from 1 O-CFR-20, Appendix B. Fraction of ECV at the stack ls provided for reference only. Concentrations at oft-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: 02/13/2019 NFS-EDMS Page 9 of14 Fraction of 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 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 2.27E-04 6.SIE-06 O.OOE+O.O O.OOE+OO 2.33E-04 Page 3 of3 To Letter Dated February 20, 2019 21 G-19-0025 GOV-01-55 ACF-19-0052 Report of Gaseous Effluent Dose and Activity Concentrations for the Maximally Exposed Off-Site Individual for the Release Period July to December 2018 (4 Pages to Follow)
Page 10 of 14
21 G-19-0025 GOV-01-55 ACF-19-0052 Report of Potential Gaseous Effluent Dose to the Maximally Exposed Offsite Individual and on the Maximum Radionuclide Concentrations for the Period:
July to December 2018 Introduction During this biannual period, NRG 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 2018. 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 five-year average wind speed and direction frequencies as presented in NFS' 1996 Environmental 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-19-0025 GOV-01-55 ACF-19-0052 Table 1 summarizes the six-month dose to a hypothetical individual at the MEI location, which was determined to be approximately 350 meters North-Northeast from the center of the plant site. The TEDE to the MEI was estimated to be 1.9E-03 mrem for gaseous effluents released during the second half of 2018. The highest organ committed dose equivalent (COE) to the MEI was estimated to be 1.0E-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:
Committed Dose Equivalent (mrem per second half of 2018) 1.3E-04 1.6E-04 4.SE-03 1.3E-04 1.4E-04 2.5E-03 1.5E-04 7.4E-04 1.9E-03 1.7E-03 4.1E-04 1.4E-04 1.3E-04 1.3E-04 6.1E-04 3.2E-04 1.3E-04 1.4E-04 1.3E-04 1.3E-03 1.3E-04 1.3E-04 1.3E-04 8.7E-03 1.0E-02 1.9E-03 mrem 350 meters North-Northeast Page 12 of14
21 G-19-0025 GOV-01-55 ACF-19-0052 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 3.3E-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 *concentratio~, at i
or Beyond th~ Site Boundary Maximum Concentration 10 CFR20,App.B, Ratio of Maximum Nuclide Concentration Location Table 2, Col. 1 Value Concentration'to *.
.' (µCilmL)
Sector Dist. (m),
(tJCilmL) 10 CFR 20 Value'.
- C 99Tc 9.SE-18 NNE 350 9.E-10 l.IE-08 22sTh O.OE+oO NIA NIA 2.E-14 0.0E+oO 230Th l.SE-20 NNE 700 2.E-14 8.SE-07 232Th O.OE+oO NIA NIA 4.E-15 O.OE+oO z34u l.6E-I7 NNE 400 5.E-14 3.2E-04 23su 5.7E-I9 NNE 500 6.E-14 9.5E-06 z3su l.2E-I9 NNE 700 6.E-14 2.lE-06 23sPu O.OE+oO NIA NIA 2.E-14 O.OE+oO z39Pu O.OE+oO NIA NIA 2.E-14 O.OE+oO 241Pu 3.lE-19 NNE 350 8.E-13 3.SE-07 241Am 2.0E-27 NNE 550 2.E-14 9.9E-I4 Sum of Fractions:
3.3E-04 NIA: Not Applicable due to 0.0 max. concentration.
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21 G-19-0025 GOV-01-55 ACF-19-0052 The TEDE to the MEI for gaseous effluents released during 2018 is provided in Table 3.
The results for the 1st half of 2018 were previously reported in Biannual Effluent Monitoring Report January through June 2018 (21 G-18-0098). 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 2018 P,etiod
. Direction Distance TED;E Covere~
(m)
(Di.rem) 2nd Half NNE 350 1.9E-03 1
51 Half NNE 400 2.2E-03 Annual Total 4.lE-03
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