ML18065A200
| ML18065A200 | |
| Person / Time | |
|---|---|
| Site: | 07000036 |
| Issue date: | 03/01/2018 |
| From: | Evers W Westinghouse |
| To: | Document Control Desk, Office of Nuclear Material Safety and Safeguards, NRC/RGN-III |
| References | |
| HEM-18-9 | |
| Download: ML18065A200 (8) | |
Text
Westinghouse Non-Proprietary Class 3 (8) Westinghouse ATTN: Document Control Desk Director, Office of Nuclear Material Safety & Safeguards U.S. Nuclear Regulatory Commission Washington, DC 20555-0001 U.S. Nuclear Regulatory Commission, Region III 2443 Warrenville Road, Suite 210 Lisle, IL 60532-4352 Westinghouse Electric Company LLC Hematite Decommissioning Project 3300 State Road P Festus, MO 63028 USA Direct tel: 314-810-3336 E-mail: everswc@westinghouse.com Our ref: HEM-18-9 Date: March 1, 2018
Subject:
Westinghouse Hematite Decommissioning Project: Effluent Monitoring Report for the Period July 1, 201 7, through December 31, 2017 (License No. SNM-00033, Docket No. 70-36)
Reference:
10 CFR 70.59, "Effluent monitoring reporting requirements"
Dear Sirs:
In accordance with 10 CFR 70.59, this letter transmits the semi-annual effluent monitoring report for Hematite Decommissioning Project (Hematite), License Number SNM-00033. The report, provided as an attachment to this letter, covers the period July 1, 2017, through December 31, 2017.
If you have any questions concerning this letter or the attached report, please contact W. Clark Evers, Project Radiation Safety Officer, at (314) 810-3336, or Ken Pallagi, Licensing Manager, at (314) 810-3353.
Sincerely, tr),~
W. Clark Evers, CHP Radiation Safety Officer Hematite Decommissioning Project :
Hematite Decommissioning Project Effluent Monitoring Report for the Period July 1, 2017, through December 31, 2017 cc:
V. Kelmeckis, Westinghouse J. Smith, NRC/DUWP/MDP M. Kunowski, NRC Region III/DNMS/MCID B. Moore, MDNR
© 2018 Westinghouse Electric Company LLC All Rights Reserved to HEM-18-9 March 1, 2018 ATTACHMENT 1 Hematite Decommissioning Project Effluent Monitoring Report for the Period July 1, 2017, through December 31, 2017
HEM-18-9 March 1, 2018 Page 1 of 6 Hematite Decommissioning Project Effluent Monitoring Report I.
Introduction Pursuant to 10 CFR 70.59, this report summarizes the results of radiological effluent monitoring at the Hematite Decommissioning Project (HDP) for the period from July 1, 2017, through December 31, 2017. This report includes the information specified in 10 CFR 70.59, which states in part:
The report must specify the quantity of each of the principal radionuclides released to unrestricted areas in liquid and gaseous effluents during the previous six months of operation, and such other information as the Commission may require to estimate maximum potential annual radiation doses to the public resulting from effluent releases. If quantities of radioactive materials released during the reporting periods are significantly above the licensee's design objectives previously reviewed as part of the licensing action, the report must cover this specifically.
IL Effluent Monitoring Report A.
Liquid Effluents The quantity of radioactivity released to unrestricted areas in liquid effluents during this time period is summarized in Table 1 below.
As indicated in Table 1, quantities of radioactive materials released during the reporting period are significantly below the control limits specified by the Hematite Decommissioning Project License Number SNM-00033.
Only Outfall #002 (WS-19) had recorded flow during the monitoring period. Based on the isotopic activity measurements, the maximum percentage of the annual effluent limit for this outfall location was 1 %. This data confirms that the maximum potential radiation dose to the public resulting from liquid effluent releases during the reporting period is below the limits of 10 CFR 20.1301.
HEM-18-9 March 1, 2018 Page 2 of 6 Total Nuclide1 Volume (L)
Gross Alpha 3.40E+07 Gross Beta 3.40E+07 U-234 3.40E+07 U-235 3.40E+07 U-238 3.40E+07 Th-232 3.40E+07 Ra-226 3.40E+07 Ra-228 3.40E+07 Pb-210 3.40E+07 Tc-99 3.40E+07 Th-228 3.40E+07 Th-231 3.40E+07 Th-234 3.40E+07 Table 1 Notes Table 1 Liquid Effluent Monitoring Summary Data Reporting Period July - December 2017 Average Analytical Activity Uncertainty Quantity Concentration Estimate LLD2 Released (uCi/ml)
(uCi/ml)
(uCi/ml)
(Ci)
Site Dam (Outfall #002) 4.25E-09 2.29E-09 2.77E-09 l.45E-04 5.42E-09 l.44E-09 l.51E-09 l.84E-04 8.3 lE-10 2.00E-10 l.02E-10 2.83E-05
- 4. l 7E-l 1 5.98E-ll 1.0lE-10 l.42E-06 2.18E-10 9.90E-ll 7.40E-l l 7.41E-06 7.39E-11 9.02E-ll l.24E-10 2.51E-06 9.0lE-11 6.43E-l 1 8.71E-11 3.06E-06 2.91E-10 2.85E-10 4.61E-10 9.90E-06 O.OOE+OO l.25E-09 2.12E-09 O.OOE+OO O.OOE+OO l.14E-09 2.0lE-09 O.OOE+OO 7.39E-l l 9.02E-l 1 l.24E-10 2.51E-06 4.l 7E-11 5.98E-l l l.OlE-10 1.42E-06 2.18E-10 9.90E-l l 7.40E-l l 7.41E-06 Total Uncertainty Estimate3. Fraction of (Ci)
Limit5 2.27E-05 NIA l.59E-05 NIA 9.13E-05 0.00 3.07E-06 0.00 1.09E-05 0.00 8.60E-05 0.00 2.54E-06 0.00 2.83E-05 0.00 l.43E-06 0.00 7.42E-06 0.00 8.60E-05 0.00 3.07E-06 0.00 l.09E-05 0.00 Total Fraction of the Limit 0.01 WTS Dischar e Outfall #003a No Discharge South Culvert (Outfall #005)
No Flow Soil Laydown Area (Outfall #006)
No Flow Note 1: Th-228, Th-231, and Th-234 are assumed to be in equilibrium with Th-232, U-235, and U-238, respectively.
Note 2: The lower level of detection (LLD) was calculated by averaging the LLD for all samples.
Note 3: The total uncertainty includes the cumulative uncertainties from the analytical and the volumetric measurements.
Note 4: Average nuclide activity as a fraction of the 10 CFR 20 Appendix B Table 2 Effluent Concentration.
Note 5: Negative values are reported as zero.
HEM-18-9 March 1, 2018 Page 3 of 6 B.
Gaseous (Airborne) Effluents Eight stationary environmental air samplers are located along the site boundary.
The data obtained from the samplers are used to measure the air effluents, to determine the annual average concentration from air effluents, and to demonstrate that an individual member of the public likely to receive the highest dose would not be expected to receive a total effective dose equivalent in excess of 10 mrem per year from air effluents. One stationary environmental air sampler is also located at an offsite location to measure background. Due to on-site counting equipment issues the stationary environmental air samplers, for the weeks beginning in Dec. 11th, and Dec. 18th of 2018, were not able to be analyzed for gross alpha and beta activity, however these samples were still included in the composite samples sent to the offsite laboratory for isotopic analysis, so the sample results for the monitoring period are still considered representative. All air sample results obtained during the monitoring period represented a small fraction of the air effluent limits. The results are presented in Table 2.
Anal te1 Alpha Beta Pb-210 Ra-226 Ra-228 Tc-99 Th-228 Th-231 Th-232 Th-234 U-234 U-235 U-238 Alpha Beta Pb-210 Ra-226 Ra-228 Tc-99 Th-228 Th-231 Th-232 Th-234 U-234 U-235 U-238 Activity Concentration2 Ci/mL Table 2 Analytical Uncertainty Estimate Ci/mL Air Sample-1 1.BE-15 1.?E-15 2.?E-14 4.?E-15 2.9E-17 6.4E-17 2.9E-17 6.4E-17 2.6E-18 9.4E-18 O.OE+OO 7.4E-16 2.6E-18 9.4E-18 4.2E-19 7.9E-18 2.6E-18 9.4E-18 5.6E-18 1.0E-17 5.?E-18 1.3E-17 4.2E-19 7.9E-18 5.6E-18 1.0E-17 ram Summary Data LLD3 Ci/mL 2.2E-15 4.6E-15 1.2E-16 1.2E-16 2.2E-17 1.4E-15 2.2E-17 2.3E-17 2.2E-17 2.0E-17 2.SE-17 2.3E-17 2.0E-17 Fraction ofthe Limit4 N/A N/A 4.BE-05 3.2E-05 1.3E-06 O.OE+OO 1.3E-04 4.?E-11 4.3E-04 2.BE-08 1.1 E-04 7.0E-06 9.3E-05 Total Fraction of the Limit 8.SE-04 Air Sample-2 6.3E-16 1.6E-15 2.1E-15 N/A 1.9E-14 4.4E-15 4.6E-15 N/A 1.4E-17 5.?E-17 1.1 E-16 2.4E-05 1.4E-17 5.?E-17 1.1E-16 1.6E-05 O.OE+OO 5.1 E-18 2.4E-17 O.OE+OO O.OE+OO 7.BE-16 1.4E-15 O.OE+OO O.OE+OO 5.1E-18 2.4E-17 O.OE+OO 1.SE-18 6.1E-18 1.6E-17 1.?E-10 O.OE+OO 5.1E-18 2.4E-17 O.OE+OO 9.SE-18 1.3E-17 1.BE-17 4.BE-08 1.1E-17 1.4E-17 2.2E-17 2.1 E-04 1.SE-18 6.1E-18 1.6E-17 2.6E-05 9.SE-18 1.3E-17 1.BE-17 1.6E-04 Total Fraction of the Limit 4.4E-04
HEM-18-9 March 1, 2018 Page 4 of 6 Table 2 Air Effluent and Environmental Monitorin2 Pro2ram Summary Data (Cont.)
Analytical Activity Uncertainty Concentration2 Estimate LLD3 Fraction of Analvte1 (uCi/mL)
(uCi/mL)
(uCi/mL) the Limit4 Air Sample-3 Alpha 6.2E-16 1.6E-15 2.2E-15 N/A Beta 2.3E-14 4.6E-15 4.6E-15 N/A Pb-210 1.2E-17 5.2E-17 1.1E-16 2.0E-05 Ra-226 1.2E-17 5.2E-17 1.1E-16 1.3E-05 Ra-228 4.4E-18 9.2E-18 1.9E-17 2.2E-06 Tc-99 O.OE+OO 7.7E-16 1.5E-15 O.OE+OO Th-228 4.4E-18 9.2E-18 1.9E-17 2.2E-04 Th-231 O.OE+OO 3.2E-18 2.0E-17 O.OE+OO Th-232 4.4E-18 9.2E-18 1.9E-17 7.3E-04 Th-234 1.2E-17 1.2E-17 1.BE-17 5.9E-08 U-234 1.4E-17 1.5E-17 2.3E-17 2.9E-04 U-235 O.OE+OO 3.2E-18 2.0E-17 O.OE+OO U-238 1.2E-17 1.2E-17 1.BE-17 2.0E-04 Total Fraction of the Limit 1.5E-03 Air Sample-4 Alpha 7.BE-16 1.6E-15 2.1E-15 N/A Beta 2.1 E-14 4.5E-15 4.6E-15 N/A Pb-210 2.7E-17 6.3E-17 1.2E-16 4.5E-05 Ra-226 2.7E-17 6.3E-17 1.2E-16 3.0E-05 Ra-228 5.1 E-18 8.7E-18 1.3E-17 2.6E-06 Tc-99 O.OE+OO 7.1E-16 1.4E-15 O.OE+OO Th-228 5.1 E-18 8.7E-18 1.3E-17 2.6E-04 Th-231 8.7E-18 1.6E-17 2.7E-17 9.6E-10 Th-232 5.1 E-18 8.7E-18 1.3E-17 8.6E-04 Th-234 9.5E-18 1.2E-17 1.9E-17 4.7E-08 U-234 1.6E-17 1.6E-17 2.1 E-17 3.2E-04 U-235 8.7E-18 1.6E-17 2.7E-17 1.4E-04 U-238 9.5E-18 1.2E-17 1.9E-17 1.6E-04 Total Fraction of the Limit 1.8E-03 Air Sample-5 (back!!round)5 Alpha 5.9E-16 1.6E-15 2.1E-15 N/A Beta 1.9E-14 4.4E-15 4.6E-15 N/A Pb-210 4.4E-17 6.6E-17 1.1E-16 7.4E-05 Ra-226 4.4E-17 6.6E-17 1.1 E-16 4.9E-05 Ra-228 3.9E-18 1.0E-17 2.3E-17 1.9E-06 Tc-99 O.OE+OO 7.2E-16 1.4E-15 O.OE+OO Th-228 3.9E-18 1.0E-17 2.3E-17 1.9E-04 Th-231 O.OE+OO 3.9E-18 2.0E-17 O.OE+OO Th-232 3.9E-18 1.0E-17 2.3E-17 6.5E-04 Th-234 1.3E-17 1.3E-17 1.6E-17 6.4E-08 U-234 1.7E-17 1.5E-17 1.7E-17 3.5E-04 U-235 O.OE+OO 3.9E-18 2.0E-17 O.OE+OO U-238 1.3E-17 1.3E-17 1.6E-17 2.1E-04 Total Fraction of the Limit 1.5E-03
HEM-18-9 March 1, 2018 Page 5 of 6 Table 2 Air Effluent and Environmental Monitorin Data Cont.)
Anal e1 Alpha Beta Pb-210 Ra-226 Ra-228 Tc-99 Th-228 Th-231 Th-232 Th-234 U-234 U-235 U-238 Alpha Beta Pb-210 Ra-226 Ra-228 Tc-99 Th-228 Th-231 Th-232 Th-234 U-234 U-235 U-238 Alpha Beta Pb-210 Ra-226 Ra-228 Tc-99 Th-228 Th-231 Th-232 Th-234 U-234 U-235 U-238 Activity Concentration2 Ci/mL Analytical Uncertainty Estimate Ci/mL Air Sample-6 6.?E-16 1.6E-15 1.8E-14 4.4E-15 3.1 E-17 5.SE-17 3.1 E-17 5.SE-17 1.2E-17 1.SE-17 O.OE+OO 7.2E-16 1.2E-17 1.SE-17 5.2E-18 1.1 E-17 1.2E-17 1.SE-17 6.2E-18 1.0E-17 1.8E-17 1.6E-17 5.2E-18 1.1E-17 6.2E-18 1.0E-17 LLD3 Ci/mL 2.1E-15 4.6E-15 9.9E-17 9.9E-17 2.2E-17 1.3E-15 2.2E-17 2.0E-17 2.2E-17 1.4E-17 2.0E-17 2.0E-17 1.4E-17 Fraction of the Limit4 N/A N/A 5.1E-05 3.4E-05 6.0E-06 O.OE+OO 6.0E-04 5.8E-10 2.0E-03 3.1E-08 3.SE-04 8.?E-05 1.0E-04 Total Fraction of the Limit 3.2E-03 Air Sample-7 6.1 E-16 1.6E-15 2.1E-15 N/A 1.9E-14 4.4E-15 4.6E-15 N/A 1.3E-17 5.SE-17 1.1E-16 2.1E-05 1.3E-17 5.SE-17 1.1E-16 1.4E-05 2.0E-18 8.?E-18 2.0E-17 1.0E-06 O.OE+OO 7.6E-16 1.4E-15 O.OE+OO 2.0E-18 8.?E-18 2.0E-17 1.0E-04 O.OE+OO 2.BE-18 2.2E-17 O.OE+OO 2.0E-18 8.?E-18 2.0E-17 3.4E-04 1.2E-17 1.3E-17 1.?E-17 5.9E-08 1.4E-17 1.?E-17 2.?E-17 2.?E-04 O.OE+OO 2.8E-18 2.2E-17 O.OE+OO 1.2E-17 1.3E-17 1.?E-17 2.0E-04 Total Fraction of the Limit 9.SE-04 Air Sample-8 4.9E-16 1.6E-15 2.1E-15 N/A 1.9E-14 4.4E-15 4.6E-15 N/A 7.3E-17 6.?E-17 1.1E-16 1.2E-04 7.3E-17 6.?E-17 1.1E-16 8.2E-05 8.1E-18 1.2E-17 1.8E-17 4.0E-06 O.OE+OO 7.8E-16 1.4E-15 O.OE+OO 8.1E-18 1.2E-17 1.8E-17 4.0E-04 O.OE+OO 4.9E-18 1.9E-17 O.OE+OO 8.1E-18 1.2E-17 1.8E-17 1.3E-03 O.OE+OO 7.9E-18 2.2E-17 O.OE+OO 1.9E-17 1.6E-17 1.SE-17 3.8E-04 O.OE+OO 4.9E-18 1.9E-17 O.OE+OO O.OE+OO 7.9E-18 2.2E-17 O.OE+OO Total Fraction of the Limit 2.3E-03
HEM-18-9 March 1, 2018 Page 6 of 6 Table 2 Air Effluent and Environmental Monitorin2 Pro2ram Summary Data (Cont.)
Analytical Activity Uncertainty Concentration2 Estimate LLD3 Fraction of Analyte1
(µCi/mL)
(µCi/mL)
(µCi/mL) the Limit4 Air Sample-9 Alpha 1.8E-15 1.7E-15 2.1E-15 N/A Beta 1.8E-14 4.4E-15 4.6E-15 N/A Pb-210 1.7E-17 5.2E-17 1.0E-16 2.9E-05 Ra-226 1.7E-17 5.2E-17 1.0E-16 1.9E-05 Ra-228 8.5E-18 1.2E-17 1.8E-17 4.2E-06 Tc-99 O.OE+OO 7.2E-16 1.4E-15 O.OE+OO Th-228 8.5E-18 1.2E-17 1.8E-17 4.2E-04 Th-231 1.7E-18 7.4E-18 2.0E-17 1.9E-10 Th-232 8.5E-18 1.2E-17 1.8E-17 1.4E-03 Th-234 9.1E-18 1.1E-17 1.2E-17 4.6E-08 U-234 7.2E-18 1.0E-17 1.7E-17 1.4E-04 U-235 1.7E-18 7.4E-18 2.0E-17 2.8E-05 U-238 9.1E-18 1.1E-17 1.2E-17 1.5E-04 Total Fraction of the Limit 2.2E-03 Note 1: Th-228 and Ra-228 were assumed to be in equilibrium with Th-232. Pb-210 was assumed to be in equilibrium with Ra-226. Th-231 was assumed to be in equilibrium with U-235. Th-234 was assumed to be in equilibrium with U-238.
Note 2: Average sample results are reported at each fixed location during the monitoring period Note 3: The LLD was calculated by averaging the LLD for all samples.
Note 4: Consistent with the guidance provided in Regulatory Guide 4.20, the average environmental sample result demonstrates that an individual member of the public did not receive a TEDE in excess of 10 mrem as the result is less than 20% of the values in 10 CFR 20 Appendix B Table 2 Column 1.
Note 5: Air sample-5 is located at an offsite location to assess background concentrations.
Note 6: Negative values are reported as zero.
III.
Conclusion The effluent monitoring results summarized above confirm that quantities of radioactive materials released from Hematite in liquid and air effluents during the reporting period are significantly below License limits for liquid and gaseous effluents. Thus, the maximum potential radiation dose to the public resulting from liquid and air effluent releases during the reporting period is well below the limits of 10 CFR 20.1301 and 10 CFR 20.1101 ( d).
The Hematite Decommissioning Project has submitted to the NRC the "Application for Termination of License No. SNM-00033" {MLI 7355A043} as such Westinghouse has notified the NRC that the Westinghouse Hematite environmental monitoring program has been terminated as of December 31, 2017. Therefore this report will be the final effluent monitoring report for License SNM-00033.