ML18066A587
| ML18066A587 | |
| Person / Time | |
|---|---|
| Site: | Erwin |
| Issue date: | 02/16/2018 |
| From: | Freudenberger R Nuclear Fuel Services |
| To: | Document Control Desk, Office of Nuclear Material Safety and Safeguards |
| References | |
| 21G-18-0027, ACF-18-0038, GOV-01-55 | |
| Download: ML18066A587 (14) | |
Text
--
TM NUCLEAR FUEL SERVICES, INC.
a BWX Technologies, Inc. company 1205 banner hill road erwin, tn 37650 phone 423.743.9141 www.nuclearfuelservices.com 21 G-18-0027 GOV-01-55 ACF-18-0038 February 16, 2018 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
Subject:
Biannual Effluent Monitoring Report July to December 2017
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 2017. Attachment 2 reports the Radioactivity in Effluent Air for the period July to December 2017. 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 2017.
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 0027) in any correspondence concerning this letter.
Sincerely, NUCLEAR FUEL SERVICES, INC.
Richard J. Freudenberger Safety & Safeguards Director t:rtf-8
- J;v/ S 5 l-D CJB/pj Attachments
- 1) Report of Radioactivity in Effluent Liquid for the Period July to December 2017
- 2) Report of Radioactivity in Effluent Air for the Period July to December 2017
- 3) Report of Gaseous Effluent Dose and Activity Concentrations for the Maximally Exposed Off-Site Individual for the Release Period July to December 2017 Page 1 of14 nuclear fuel services, inc.
- a BWX Technologies, Inc. company I
- J;v(5S
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 Ms. Leira Cuadrado 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 of 14 21 G-18-0027 GOV-01-55 ACF-18-0038 To Letter Dated February 16, 2018 Report of Radioactivity in Effluent Liquid for the Period July to December 2017 (2 Pages to Follow)
Page 3 ofl4 21 G-18-0027 GOV-01-55 ACF-18-0038
21 G-18-0027 GOV-01-55 ACF-18-0038 Radioactivity in Effluent Liquid July 1, 2017 to December 31, 2017 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-238 426,241,000 5.SOE-11 l.13E-10 2.14E-IO 2.47E-05 l.45E-06 2.90E-03 Pu-239/240 426,241,000 O.OOE+OO l.OlE-10 2.57E-10 O.OOE+OO O.OOE+OO O.OOE+OO Tc-99 426,241,000 2.69E-09 2.99E-08 5.19E-08 l.lSE-03 6.79E-02 4.49E-05 Th-228 426,241,000 2.04E-11 l.16E-10 2.36E-10 8.70E-06 l.06E-08 1.02E-04 Th-230 426,241,000 1.39E-IO 1.73E-10 2.73E-10 5.92E-05 2.93E-03 I.39E-03 Th-232 426,241,000 J.19E-11 9.86E-11 I.67E-10 1.36E-05 l.25E+02 I.06E-03 U-233/234 426,241,000 4.62E-IO 2.89E-10 2.73E-10 l.97E-04 3.16E-02 l.54E-03 U-235/236 426,241,000 l.25E-10 l.SSE-10 2.41E-10 5.34E-05 2.47E+Ol 4.1 SE-04 U-238 426,241,000 l.OSE-10 l.64E-10 2.61E-10 4.47E-05 1.34E+02 3.50E-04 Total:
7.81E-03 Sewer Pu-238 23,501,679 2.4IE-12 7.29E-ll 1.58E-10 5.66E-08 3.3 IE-09 1.20E-05 Pu-239/240 23,501,679 O.OOE+OO 8.30E-11 l.86E-10 O.OOE+OO O.OOE+OO O.OOE+OO Tc-99 23,501,679 5.35E-09 3.04E-08 5.25E-08 l.26E-04 7.44E-03 8.92E-06 Th-228 23,501,679 l.37E-l l 1.36E-10 2.88E-10 3.22E-07 3.93E-10 6.SSE-06 Th-230 23,501,679 l.OSE-10 2.06E-10 3.SSE-10 2.54E-06 l.26E-04 l.OSE-04 Th-232 23,501,679 1.SSE-11 l.06E-l 0 I. 77E-l 0 3.64E-07 3.34E+OO
- 5. l 7E-05 U-232 23,501,679 O.OOE+OO l.07E-10 2.30E-10 O.OOE+OO O.OOE+OO O.OOE+OO U-233/234 23,501,679 6.28E-09 7.42E-10 1.57E-10 l.48E-04 2.36E-02 2.09E-03 U-235/236 23,501,679 2.21E-10 1.SIE-10 l.39E-IO 5.19E-06 2.40E+OO 7.37E-05 U-238 23,501,679 9.59E-10 2.96E-10 l.44E-10 2.25E-05 6.73E+Ol 3.20E-04 Total:
2.67E-03 West Ditch Pu-238 118,638,000 O.OOE+OO 1.28E-10 3.07E-10 O.OOE+OO O.OOE+OO O.OOE+OO Pu-239/240 118,638,000 2.76E-12 l.57E-10 3.43E-10.
3.27E-07 5.26E-06 l.38E-04 Tc-99 118,638,000 O.OOE+OO
- 3. IOE-08 5.42E-08 O.OOE+OO O.OOE+OO O.OOE+OO Th-228 118,638,000 l.40E-l l l.16E-IO 2.44E-10 l.66E-06 2.02E-09 6.99E-05 Th-230 118,638,000 l.66E-1 l l.64E-10 3.52E-10 l.97E-06 9.76E-05 l.66E-04 Th-232 118,638,000 O.OOE+OO 8.86E-ll l.91E-10 O.OOE+OO O.OOE+OO O.OOE+OO U-233/234 118,638,000 l.4IE-08 l.4IE-09 2.46E-10 l.67E-03 2.68E-Ol 4.70E-02 U-235/236 118,638,000 8.46E-10 3.94E-10 2.28E-10 l.OOE-04 4.65E+Ol 2.82E-03 U-238 118,638,000 l.SSE-09 4.75E-10 2.33E-10 l.87E-04 5.59E+02 5.26E-03 Total:
5.SSE-02 WWTF Am-241 3,565,706 l.65E-l 1 7.68E-l 1 l.23E-l 0 5.87E-08 l.71E-08 8.23E-04 Cs-137 3,565,706 1.65E-10 8.32E-10 1.41E-09 5.89E-07 6.77E-09 l.65E-04 Na-22 3,565,706 O.OOE+OO 9.92E-10 l.49E-09 O.OOE+OO O.OOE+OO O.OOE+OO Np-237 3,565,706 l.OSE-11 2.12E-10 4.36E-10 3.SSE-08 5.46E-05 5.39E-04 Pb-212 3,565,706 l.27E-09 3.30E-09 2.73E-09 4.52E-06 3.27E-12 6.33E-04 Pu-238-3,565,706 O.OOE+OO 6.SSE-11 1.49E-l 0 O.OOE+OO O.OOE+OO O.OOE+OO ECV: Effluent Concentration Value from 1 O-CFR-20, Appendix B.
Note: A value of ~a" was substituted for negative analytical results.
Printed: 02/15/2018 NFS-EDMS Page I of2 Page 4 of 14
l Radioactivity in Effluent Liquid July 1, 2017 to December 31, 2017 Total Activity Volume Concentration Location (1)
(µCi/ml)
WWTF Pu-239/240 3,565,706 3.12E-ll Pu-241 3,565,706 O.OOE+OO Ra-224 3,565,706 7.62E-09 Tc-99 3,565,706 3.12E-09 Th-228 3,565,706 O.OOE+OO Th-230 3,565,706 3.02E-l l Th-231 3,565,706 6.07E-09 Th-232 3,565,706 l.87E-12 U-232 3,565,706 O.OOE+OO U-233/234 3,565,706 I.57E-08 U-235/236 3,565,706 9.26E-IO U-238 3,565,706 2.96E-IO ECV: Effluent Concentration Value from 10-CFR-20, Appendix B.
Note: A value of *o" was substituted for negative analytical results.
Printed: 02/15/2018 Error Quantity Estimate LLD Released
(µCi/ml)
(µCi/ml)
(Ci) 7.80E-ll l.39E-10 l.l lE-07 1.13E-08 l.98E-08 O.OOE+OO 3.29E-09 5.95E-09 2.72E-05 1.44E-07 2.47E-07 l.l lE-05 l.37E-10 3.39E-IO O.OOE+OO I.SSE-JO 3.SSE-10 l.OSE-07 3.73E-08 3.75E-08 2.16E-05 l.lSE-10 2.62E-10 6.67E-09 8.74E-l l 2.23E-IO O.OOE+OO l.14E-09 l.13E-10 5.61E-05 2.SOE-10 l.lOE-10 3.30E-06 l.66E-IO l.40E-10 l.06E-06 NFS-EDMS Page 5 of14 21 G-18-0027 GOV-01-55 ACF-18-0038 Quantity Fraction Released of (g)
ECV 1
l.79E-06 l.56E-03 O.OOE+OO O.OOE+OO l.71E-IO 3.81E-02 6.58E-04 5.20E-05 O.OOE+OO O.OOE+OO 5.34E-06 3.02E-04 4.07E-l l 1.21E-04 6.12E-02 6.23E-05 O.OOE+OO O.OOE+OO 9.00E-03 5.25E-02 l.53E+OO 3.09E-03 3.ISE+OO 9.87E-04 Total:
9.89E-02 Page 2 of2
. Atta.chment 2 To Letter Dated February 16, 2018 Report of Radioactivity in Effluent Air for the Period July to December 2017 (3 Pages to Follow)
Page 6 of 14 21 G-18-0027 GOV-01-55 ACF-18-0038
Total Volume Location (m3)
Main Stack 416 Th-230 283,054,308 U-234 283,054,308 U-235 283,054,308 U-238 283,054,308 Stack 185 Bldg. 131 Pu-241 26,620,132 Tc-99 26,620,132 U-234 26,620,132 U-235 26,620,132 Stack 234 Bldg. 234 Arn-241 79,164,955 Pu-238 79,164,955 Pu-239/240 79,164,955 Pu-241 79,164,955 Th-228 79,164,955 Th-230 79,164,955 Th-232 79,164,955 U-234 79,164,955 U-238 79,164,955 Stack 327 Bldg. 330 Pu-241 267,968,640 Tc-99 267,968,640 U-234 267,968,640 U-235 267,968,640 Stack 421 Bldg. 100 Pu-241 9,573,696 Tc-99 9,573,696 U-234 9,573,696 U-235 9,573,696 Stack 424 Bldg. 100 Pu-241 9,164,221 Tc-99 9,164,221 U-234 9,164,221 Radioactivity im Effluent Air July 1, 2017 to December 31, 2017 Activity Error Quantity Concentration Estimate LLD Released
(µCi/ml)
(µCi/ml)
(µCi/ml)
(Ci) 1079.74 m3/min 18.00 m 3/sec 7.lSE-16 l.49E-16 8.91E-l 7 2.03E-07 1.64E-13 3.39E-14 2.03E-14 4:63E-05 1.0IE-14 2.0SE-15 l.25E-15 2.85E-06 5.03E-15 l.04E-15 6.24E-16 l.42E-06 101.57 m3/min 1.69 m3/sec O.OOE+OO 8.28E-16 l.68E-15 O.OOE+OO O.OOE+OO 2.68E-14 5.45E-14 O.OOE+OO O.OOE+OO 8.0SE-15 2.0IE-14 O.OOE+OO O.OOE+OO 2.SOE-16 6.21E-16 O.OOE+OO 300.41 m3/min 5.01 m3/sec O.OOE+OO 2.13E-l 7 4.74E-17 O.OOE+OO O.OOE+OO 2.60E-l 7 5.79E-17 O.OOE+OO O.OOE+OO 9.21E-l 7 2.0SE-16 O.OOE+OO O.OOE+OO 4.0IE-15 7.85E-15 O.OOE+OO O.OOE+OO 1.42E-l 7 3.16E-17 O.OOE+OO O.OOE+OO 1.77E-16 3.95E-16 O.OOE+OO O.OOE+OO 2.24E-16 5.00E-16 O.OOE+OO O.OOE+OO 4.84E-16 l.OSE-15 O.OOE+OO O.OOE+OO l.42E-16 3.16E-16 0.00E+OO 1022.35 m3/min 17.04 m3/sec LSIE-15 5.09E-16 7.SIE-16 4.SSE-07 5.SSE-14 l.65E-14 2.43E-14 l.57E-05 8.71E-14 l.13E-14 8.84E-l 5 2.33E-05 2.69E-15 3.SiE-16 2.73E-16 7.22E-07 36.31 m3/min 0.61 m3/sec 2.88E-15 l.SSE-15 2.31E-15 2.76E-08 9.31E-14 5.l lE-14 7.48E-14 8.91E-07 l.82E-13 3.46E-14 2.65E-14 1.74E-06 5.63E-l 5 l.07E-l 5 8.19E-16 5.39E-08 34.81 m3/min 0.58 m3/sec l.12E-15 l.03E-15 l.69E-15 l.03E-08 3.63E-14 3.34E-14 5.46E-14 3.33E-07 6.58E-14 l.83E-14 2.02E-14 6.03E-07 21G-18-0027 GOV-01-55 ACF-18-0038 Quantity Fraction Released of (g)
ECV 1
l.OIE-05 3.59E-02 7.43E-03 3.27E+OO l.32E+OO l.68E-Ol 4.25E+OO 8.38E-02 Total:
3.56E+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:
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 Total:
O.OOE+OO 4.70E-09 2.26E-03 9.27E-04 6.SOE-05 3.74E-03 l.74E+OO 3.34E-Ol 4.49E-02 Total:
l.79E+OO 2.68E-10 3.60E-03 5.27E-05 l.03E-04 2.SOE-04 3.64E+OO 2.SOE-02 9.39E-02 Total:
3.74E+OO 9.99E-l l l.40E-03 l.97E-05 4.03E-05 9.66E-05 l.32E+OO ECV: Effluent Concentration Value from 1 O-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: 02/15/2018 NFS-EDMS Page I of3 Page 7 of14
Total Volume Location (ml)
Stack 424 Bldg. 100 U-235 9,164,221 Stack 573 Bldg 306-W Pu-241 20,858,690 Tc-99 20,858,690 U-234 20,858,690 U-235 20,858,690 Stack 600 Bldg. 110 Pu-241 78,604,282 Tc-99 78,604,282 U-234 78,604,282 U-235 78,604,282 Stack 615 Bldg. 306-W Pu-241 10,265,669 Tc-99 10,265,669 U-234 10,265,669 U-235 10,265,669 Stack 646 Bldg. 110 Pu-241 10,462,700 Tc-99 10,462,700 U-234 10,462,700 U-235 10,462,700 Stack 701 Bldg. 307 Pu-241 30,224,712 Tc-99 30,224,712 U-234 30,224,712 U-235 30,224,712 Stack 702 Bldg. 307 Pu-241 44,120,407 Tc-99 44,120,407 U-234 44,120,407 U-235 44,120,407 Radioactivity in Effluent Air July 1, 2017 to December 31, 2017 Activity Error Quantity Concentration Estimate LLD Released
(µCi/ml)
(µCi/ml)
(µCi/ml)
(Ci) 34.81 m3/min 0.58 m3/sec 2.03E-l 5 5.65E-16 6.24E-16 l.86E-08 79.55 m3/min 1.33 m3/sec O.OOE+OO 7.65E-16 l.SIE-15 O.OOE+OO O.OOE+OO 2.47E-14 4.88E-14 O.OOE+OO 3.57E-15 7.69E-15 l.83E-14 7.46E-08 l.l lE-16 2.38E-16 5.65E-16 2.31E-09 299.91 m3/min 5.00 m3/sec 2.75E-l 5 6.58E-16 l.OIE-15 2.16E-07 8.90E-14 2.13E-14 3.27E-14 6.99E-06 9.69E-14 l.13E-14 l.25E-14 7.62E-06 3.00E-15 3.48E-16 3.88E-16 2.36E-07 39.13 m3/min 0.65 m3/sec O.OOE+OO 8.28E-16 l.69E-15 O.OOE+OO O.OOE+OO 2.68E-14 5.47E-14 O.OOE+OO 2.99E-15 9.60E-15 2.02E-14 3.07E-08 9.24E-17 2.97E-16 6.25E-16 9.49E-10 40.01 m3/min 0.67 m3/sec O.OOE+OO 9.41E-16 l.93E-15 O.OOE+OO O.OOE+OO 3.04E-14 6.22E-14 O.OOE+OO O.OOE+OO 7.60E-l 5 2.28E-14 O.OOE+OO O.OOE+OO 2.35E-16 7.06E-16 O.OOE+OO 115.48 m3/min 1.92 m3/sec O.OOE+OO 9.36E-16 1.94E-15 O.OOE+OO O.OOE+OO 3.03E-14 6.28E-14 O.OOE+OO 8.14E-15 l.OIE-14 2.30E-14 2.46E-07 2.52E-16 3.12E-16 7.IOE-16 7.61E-09 168.35 m3/min 2.81 m3/sec O.OOE+OO 8.56E-16 l.71E-15 O.OOE+OO O.OOE+OO 2.77E-14 5.52E-14 O.OOE+OO 8.73E-15 l.06E-14 2.02E-14 3.85E-07 2.70E-16 3.27E-16 6.25E-16 l.19E-08 21 G-18-0027 GOV-01-55 ACF-18-0038 Quantity Fraction Released of (g)
ECV 1
8.63E-03 3.39E-02 Total:
l.35E+OO O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO l.20E-05 7.ISE-02 l.07E-03 l.84E-03 Total:
7.33E-02 2.IOE-09 3.44E-03 4.14E-04 9.88E-05 l.22E-03 l.94E+OO l.09E-Ol 5.00E-02 Total:
l.99E+OO O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO 4.92E-06 5.98E-02 4.39E-04 l.54E-03 Total:
6.13E-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 Total:
O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO
.. 3.94E-05 l.63E-Ol 3.52E-03 4.19E-03 Total:
l.67E-01 O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO
- 6. l 7E-05 l.75E-Ol 5.52E-03 4.SOE-03 Total:
l.79E-Ol ECV; Effluent Concentration Value from 10-CFR-20, Appendix B. Fraction of ECV at the stack is provided far reference only. Concentrations at off-site locat!ons 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 "On was substituted for negative analytical results.
Printed: 02/15/2018 NFS-EDMS Page 2 of3 Page 8 of14
Total Volume Location (m3)
Stack 703 Exhaust Room Air Pu-241 201,970,137 Th-228 201,970,137 Th-230 201,970,137 Th-232 201,970,137 U-234 201,970,137 U-235 201,970,137 U-238 201,970,137 Stack 773 Bldg. 440 Pu-241 48,564,857 Th-228 48,564,857 Th-230.
48,564,857 Th-232 48,564,857 U-234 48,564,857 U-235 48,564,857 U-238 48,564,857 Stack 774 Bldg. 301 Th-228 87,697,837 Th-230 87,697,837 Th-232 87,697,837 U-234 87,697,837 U-235 87,697,837 U-238 87,697,837 Stack 796 Bldg. 100 Pu-241 5,499,332 Tc-99 5,499,332 U-234 5,499,332 U-235 5,499,332 1
Radioactivity in Effluent Air July 1, 2017 to December 31, 2017 Activity Error Quantity Concentration Estimate LLD Released
(µCi/ml)
(µCi/ml)
(µCi/ml)
(Ci) 770.64 m3/min I 2.84 m 3/sec O.OOE+OO 2.46E-14 5.IOE-14 O.OOE+OO 1.03E-16 7.65E-16 1.85E-15 2.07E-08 5.91E-17 4.41E-16 1.07E-15 l.19E-08 8.40E-17 6.26E-16 1.52E-15 1.70E-08 6.43E-16 4.79E-15 l.16E-14 l.30E-07 6.64E-17 4.95E-16 L20E-15 l.34E-08 8.09E-17 6.03E-16 1.46E-15 l.63E-08 185.31 m3/min 3.09 m3tsec O.OOE+OO 3.36E-14 7.12E-14 O.OOE+OO O.OOE+OO 1.20E-15 3.65E-15 O.OOE+OO O.OOE+OO 1.55E-15 4.69E-15 O.OOE+OO O.OOE+OO 1.03E-15 3.13E-15 O.OOE+OO O.OOE+OO 3.ISE-15 9.65E-15 O.OOE+OO O.OOE+OO 5.59E-16 1.70E-15 O.OOE+OO O.OOE+OO 1.12E-15 3.39E-15 O.OOE+OO 334.68 m3/min 5.58 m3tsec l.02E-l 6 2.31E-16 4.53E-16 8.95E-09 3.48E-16 7.86E-16 l.55E-l 5 3.0SE-08 2.06E-16 4.66E-16 9.16E-16 1.SIE-08 9.28E-16 2.IOE-15 4.13E-15 8.14E-08 6.04E-17 1.36E-16 2.68E-16 5.29E-09 4.37E-16 9.88E-16 1.94E-15 3.83E-08 20.93 m3/min 0.35 m3tsec 2.0SE-16 9.02E-16 1.69E-15 l.13E-09 6.64E-15 2.92E-14 5.46E-14 3.65E-08 O.OOE+OO 6.99E-15 2.0IE-14 O.OOE+OO O.OOE+OO 2.16E-16 6.21E-16 O.OOE+OO 21 G-18-0027 GOV-01-55 ACF-18-0038 Quantity Fraction Released of (g)
ECV 1
O.OOE+OO O.OOE+OO 2.53E-11 5.13E-03 5.91E-07 2.96E-03 1.56E-01
- 2. IOE-02 2.0SE-05 l.29E-02 6.21E-03 1.11 E-03 4.88E-02 1.35E-03 Total:
4.44E-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 O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO Total:
O.OOE+OO l.09E-l l
- 5. IOE-03 1.5 IE-06 l.74E-02 1.66E-O I
- 5. !SE-02 1.30E-05 1.86E-02 2.45E-03 1.0 I E-03 1.14E-01 7.29E-03 Total:
1.0IE-01 l.lOE-11 2.57E-04 2.16E-06 7.37E-06 O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO Total:
2.64E-04 ECV: Effluent Concentration Value from 1 O-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: 02/15/2018 NFS-EDMS Page 3 of3 Page 9 of14 To Letter Dated February 16, 2018 21 G-18-0027 GOV-01-55 ACF-18-0038 Report of Gaseous Effluent Dose and Activity Concentrations for the Maximally Exposed Off-Site Individual for the Release Period July to December 2017 (4 Pages to Follow)
Page 10 of 14
--1 I
21 G-18-0027 GOV-01-55 ACF-18-0038 Report of Potential Gaseous Effluent Dose to the Maximally Exposed Offsite Individual and on the Maximum Radionuclide Concentrations for the Period:
July to December 2017 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 2017. 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.
I 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.
Page 11 of14
21 G-18-0027 GOV-01-55 ACF-18-0038 Table 1 summarizes the six-month dose to a hypothetical individual at the MEI location, which was determined to be approximately 400 meters North-Northeast from the center of the plant site. The TEDE to the MEI was estimated to be 2.0E-03 mrem for gaseous effluents released during the second half of 2017. The highest organ committed dose equivalent (COE) to the MEI was estimated to be 1.1 E-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 2017) 1.4E-04 1.6E-04 5.2E-03 1.4E-04 1.4E-04 2.4E-03 1.6E-04 7.3E-04 1.BE-03 1.BE-03 4.4E-04 1.4E-04 1.4E-04 1.4E-04 6.?E-04 3.9E-04
.1.4E-04 1.SE-04 1.4E-04 1.2E-03 1.4E-04 1.4E-04 1.4E:04 9.2E-03 1.1 E-02 2.0E-03 mrem 400 meters North-Northeast Page.12 of14
21 G-18-0027 GOV-01-55 ACF-18-0038 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 3.5E-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 Boun~*ary *
. Maxill\\Upl Concentration.
10 CFR 20, App. B, Ratio of Maximum Nuclide Concentration Location Ta~le 2, Col. t Value ** Concentrationto *
(fJCi/mL)
Secto~
. Dist. (m)
(µCi/mL) 10 CFR 20Value 99Tc 9.9E-18 NNE 350 9.E-10
. 1.lE-08 228Th 8.4E-21 NNE 450 2.E-14 4.2E-07 230Th 3.2E-20 NNE 650 2.E-14 1.6E-06 231Th 1.0E-21 NNE 950 9.E-09 l.lE-13 232Th 9.lE-21 NNE 450.
4.E-15 2.3E-06 234u 1.7E-17 NNE 450 5.E-14 3.3E-04 2350 6.3E-19 NNE 550 6.E-14 1.lE-05 2380 1.7E-19 NNE 700 6.E-14 2.9E-06 241Pu 3.lE-19 NNE 350 8.E-13 3.8E-07 241Am 2.0E-27 NNE 550 2.E-14 l.OE-13 Sum of Fractions:
3.SE-04 Page 13 of 14
21 G-18-0027 GOV-01-55 ACF-18-0038 The TEDE to the MEI for gaseous effluents released during 2017 is provided in Table 3.
The results for the 1st half of 2017 were previously reported in Biannual Effluent Monitoring Report January through June 2017 (21G-17-0208). 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 2017 Period Direction Distance TEDE Covered (m)
(mrem) 2nct Half NNE 400 2.0E-03 1"1 Half NNE 400 l.9E-03 Annual Total 3.9E-03 Page 14 of 14