ML20238C062

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Westinghouse Electric Company, LLC - NRC Semi-Annual Discharge Report (January - June 2020)
ML20238C062
Person / Time
Site: Westinghouse
Issue date: 08/25/2020
From: Ferguson J
Westinghouse
To:
Document Control Desk, Office of Nuclear Material Safety and Safeguards
References
LTR-RAC-20-69
Download: ML20238C062 (21)
v • d • e


Text

e Westinghouse Document Control Desk, Director Office of Nuclear Material Safety and Safeguards U. S. Nuclear Regulatory Commission Washington, DC 20555-0001 cc:

USNRC, Region II 245 Peachtree Center Ave, NE, Suite 1200 Atlanta, Georgia 30303-1257

Subject:

SNM-1107/70-1151 NRC Semi-Annual Discharge Report January - June 2020

Dear Sir:

Page 1 of 2 Westinghouse Electric Company LLC Nuclear Fuel Columbia Fuel Site 5801 Bluff Road Hopkins, South Carolina 29061 USA Direct tel: 803-64 7-1000 Our ref: L TR-RAC-20-69 August25,2020 The following report fulfills regulatory requirements as listed in 10 CFR 40.65 and 10 CFR 70.59, "Effluent Monitoring Reporting Requirements." For the six-month period of January 1, 2020, through June 30, 2020, the following quantities of radionuclides were released to the unrestricted area by the Westinghouse Electric Company's Columbia, South Carolina Nuclear Fuel Plant:

Total Total Regulatory 6-month 6-month Discharge. emissions Parameter Measured Concentration

(µCi)

Concentration Limit Gaseous 182.8 Uranium (analyzed as 7 E -15 µCi/ml*

5 E*14 µCi/ml Qross alpha) 1,683 U-234 Liquid 76 U-235 3 E*08 µCi/ml 3 E*07 µCi/ml Effluent 297 U-238 2,935 Tc-99 4 E*08 µCi/ml 6 E*05 µCi/ml

  • Includes a dispersion factor of 1000 to account for d1lut1on between the release point and the nearest site boundary
  1. Sum of fractions (SOF) equates to less than 1.0.

As shown above, the effluent releases are within the NRC's regulatory limits designed to protect public health and safety.

Gaseous effluent results were obtained from point source gross alpha analysis of stack gas effluent, and the individual radionuclide activity composition is inferred from the calculated average enrichment (85.25% U-234, 3.28% U-235, and 11.48% U-238). Tc-99 is not reported for gaseous effluents as the quantities of Tc-99 detected during benchmark testing of gaseous emissions were below the thresholds that would necessitate reporting.

Liquid effluent values were obtained by analysis of composite proportional samples prior to discharge to the Congaree River and basing the activity on the calculated average enrichment.

All liquid discharges are pumped through a single discharge line to the Congaree River. Liquid effluent composites were analyzed by alpha spectroscopy, and significant quantities of U-236 were not detected using this method. The total liquid effluent volume released to the Congaree River during the first half of 2020 was 7.31E+10 milliliters (ml).

© 2020 Westinghouse Electric Company LLC All Rights Reserved

Page 2 of 2 Our ref: L TR-RAC-20-69 August 25, 2020 Calculated values have been reported for all results, due to variability of minimum detection concentrations (MDC). Negative values are reported as zero.

To meet the requested dosage information outlined in Regulatory Guide 4.16, Section 6.1, L TR-EHS-20-60, "2020 Semi-Annual Assessment of Public Dose due to Liquid and Gaseous Effluents" is attached.

Sincerely, Jeff!il~

Manager, Environment, Health and Safety

Attachment:

L TR-EHS-20-60, "2020 Semi-Annual Assessment of Public Dose due to Liquid and Gaseous Effluents"

Westinghouse Non-Proprietary Class 3 Page 1 of 3 Westinghouse Electric Company Nuclear Fuel Columbia Fuel Site 5801 Bluff Rd Hopkins, South Carolina 29061 USA

© 2020 Westinghouse Electric Company LLC All Rights Reserved To: Cynthia Logsdon, Diana Joyner Date: August 17, 2020 cc: Jeff Ferguson, Elise Malek, Patrick Donnelly, Nancy Parr, Anna Pearson, From: David Wagoner Your ref:

Ext: 1919 Our ref: LTR-EHS-20-60 Fax: 803.695.4158

Subject:

2020 Semi-Annual Assessment of Public Dose due to Liquid and Gaseous Effluents Effluents released from plant operations are monitored to determine the quantities of radionuclides discharged into the environment. The cumulative radioactivity released is summarized semi-annually and annually and input into models developed by the NRC and EPA to estimate the potential dose to the public.

The whole body and organ dose via the following pathways is determined in this assessment:

Dose due to Gaseous Effluents by Direct Inhalation The whole body dose was estimated using EPAs COMPLY Code at level 2 complexity.

The organ dose was estimated by calculating the X/Q factor using the results of the COMPLY analysis for stack #1212 (S1030A), the measured release quantity, and the dose conversion factors from Federal Guidance Report No 11, Limiting Values of Radionuclide Intake and Air concentration Factors for Inhalation, Submersion, and Ingestion (FGR 11).

Dose due to Liquid Effluents by Ingestion of Potable Water Estimated using equations and recommended values in Regulatory Guide 1.109, Doses from Liquid Effluent Pathways (RG 1.109). Dose conversion factors are referenced from FGR 11.

Dose due to Liquid Effluents by Ingestion of Fish Estimated using equations and recommended values in RG 1.109. Dose conversion factors are referenced from FGR 11.

Dose due to Liquid Effluents by Irradiation from Shoreline Deposition Estimated using equations and recommended values in RG 1.109. Dose conversion factors are referenced from Federal Guidance report No 12, External Exposure to Radionuclides in Air, Water, and Soil.

Bounding dose assessments for direct inhalation and for ingestion are performed using conservative assumptions to determine the maximum potential dose to a hypothetical individual member of the public. The inhalation dose is determined for the hypothetical individual standing at the nearest site

Westinghouse Non-Proprietary Class 3 Page 2 of 3 Our ref: LTR-EHS-20-60 August 17, 2020 boundary (595 meters) for six months. The ingestion dose from liquid effluent and external dose from sediment deposition is determined at the point at which the liquid effluent leaves the diffuser in the Congaree River.

The release rates for gaseous effluent are determined by gross alpha measurements performed on daily air samples, one per stack for 47 stacks (Attachment 1). The release rates for liquid effluent are determined by isotopic analysis of composite liquid effluent samples taken monthly (Attachment 3).

Based on these results, the following quantities were released in the 1st half of calendar year 2020:

182.8 µCi of Uranium in gaseous effluent 2,056 µCi of Uranium in liquid effluent 2,935 µCi of Technetium in liquid effluent Using these results and the methods previously mentioned the whole body dose, dose to the bone, and dose to the lung were determined for an individual present at the nearest site boundary. Table 1 provides a summary of the results for each pathway. The gaseous and liquid effluents released during the 1st half of 2020 resulted in a potential whole body dose of 0.08 mrem, 0.66 mrem to the lung, and 0.003 mrem to the bone for an individual present at the nearest site boundary. The estimated whole body dose is well below the 12.5 mrem annual dose limit (1/2 of the 25 mrem annual dose limit) and the 0.5 mrem ALARA goal (1/2 of 1 mrem annual ALARA goal) for a member of the public.

Table 1. 2020 Semi-Annual Dose to the Public from Liquid and Gaseous Effluents Whole Body Dose (mrem/6 months)

Organ Dose - Bone (mrem/6 months)

Organ Dose - Lung (mrem/6 months)

Gaseous Effluents Direct inhalation*

0.08 2.51E-03 0.66 Liquid Effluents Potable Water 2.47E-05 3.61E-04 Aquatic Food (Fish) 1.49E-06 2.08E-05 Shoreline Deposition 9.16E-10 Total (mrem/6 months) 0.08 2.89E-03 0.66

  • Assumes 80 % residence time There were no changes in source material and no release points were added or removed during the 1st half of 2020. The attachments below illustrate the method used to calculate each result listed in Table 1. The annual dose calculation will be completed when the data is available for the entire calendar year.

Westinghouse Non-Proprietary Class 3 Page 3 of 3 Our ref: LTR-EHS-20-60 August 17, 2020 1st Half 2020 Gaseous Effluent Discharges :

Lung/Bone Organ Dose due to Gaseous Effluent :

1st Half 2020 Liquid Effluent Discharges :

Whole Body Dose from Liquid Effluent Pathways - Potable Water :

Dose to the Bone Surface from Liquid Effluent Pathways - Potable Water :

Whole Body Dose from Liquid Effluent Pathways - Aquatic Foods :

Dose to the Bone Surface from Liquid Effluent Pathways - Aquatic Foods :

Whole Body Dose from Liquid Effluent Pathways - Shoreline Deposits :

2020 Isotopic Fractions 0:

Comply Results David Wagoner, CHP Radiation Safety Engineer EH&S Operations Review by: Anna Miller Manager, RSO EH&S Operations 1stHalf2020GaseousEffluentDischarges Sampling Location StackHeight FlowRate GrossAlphaConcentration*

1stHalf(JanJun)

Station Description (m)

(m3/s)

(uCi/mL)

U234 U235 U238 uCiUraniumReleased 1207 METLABEXHAUST 10 0.56 1.92E13 9.05E14 3.48E15 1.22E14 1.67 1239 MAINTWELDEX 11 0.94 1.67E13 1.34E13 5.15E15 1.80E14 2.47 1243 AC8 11 3.78 8.01E14 2.56E13 9.87E15 3.45E14 4.73 1222 CALCCOMBGASLN1 12 0.16 2.03E13 2.82E14 1.08E15 3.80E15 0.52 1223 CALCCOMBGASLN2 12 0.16 1.58E13 2.22E14 8.55E16 2.99E15 0.41 1224 CALCCOMBGASLN3 12 0.16 1.41E13 1.95E14 7.51E16 2.63E15 0.36 1225 CALCCOMBGASLN4 12 0.16 9.85E14 1.36E14 5.21E16 1.83E15 0.25 1226 CALCCOMBGASLN5 12 0.16 2.02E13 2.82E14 1.08E15 3.80E15 0.52 1228 CHEMLABEX#3 12 0.64 1.33E13 2.11E14 8.13E16 2.85E15 0.39 1237 ABFHOODTORITEX 12 1.42 8.58E14 1.03E13 3.96E15 1.39E14 1.90 1241 PELLETLINE6 12 2.78 8.10E14 1.91E13 7.34E15 2.57E14 3.52 1247 HOTOILRMEX 12 3.89 1.50E13 4.94E13 1.90E14 6.65E14 9.11 1201 FURNACEEXLINE1 13 2.78 8.11E14 1.91E13 7.34E15 2.57E14 3.52 1202 FURNACEEXLINE2 13 2.78 8.03E14 1.89E13 7.28E15 2.55E14 3.49 1203 FURNACEEXLINE3 13 2.78 9.64E14 2.27E13 8.74E15 3.06E14 4.19 1204 FURNACEEXLINE4 13 2.78 8.00E14 1.89E13 7.26E15 2.54E14 3.48 1205 FURNACEEXLINE5 13 2.78 8.01E14 1.89E13 7.26E15 2.54E14 3.48 1206 NEWDECONROOM 13 1.64 9.16E14 1.27E13 4.90E15 1.72E14 2.35 1208 INCINERATOREX 13 1.89 2.75E13 4.41E13 1.70E14 5.94E14 8.13 1209 SUPPLINCINEX 13 0.94 1.19E13 9.54E14 3.67E15 1.28E14 1.76 1217 CONVENCLEX4C 13 3.89 1.62E13 5.33E13 2.05E14 7.18E14 9.83 1218 CONVENCLEX4D 13 3.89 1.42E13 0.00E+00 0.00E+00 0.00E+00 0.00 1219 CONVEMERGEX4E 13 3.89 2.16E13 3.36E14 1.29E15 4.53E15 0.62 1221 DECONROOMEX 13 1.42 3.25E13 3.90E13 1.50E14 5.25E14 7.19 1230 DEVLABEX#1 13 0.94 1.57E13 1.26E13 4.84E15 1.69E14 2.32 1231 DEVLABEX#2 13 0.94 2.23E13 1.78E13 6.86E15 2.40E14 3.29 1232 PELLETCOMBINEDEX 13 4.72 8.25E14 3.30E13 1.27E14 4.45E14 6.09 1229 HPLABEX 15 0.58 8.81E14 4.34E14 1.67E15 5.84E15 0.80 1236 MAPCOMBINED 15 2.78 2.45E13 0.00E+00 0.00E+00 0.00E+00 0.00 1240 AC3 15 3.78 8.29E14 2.66E13 1.02E14 3.58E14 4.90 1246 AC4 15 3.89 8.20E14 2.70E13 1.04E14 3.64E14 4.98 1251 WATERGLASSSCRS1190 15 2.36 1.53E13 3.05E13 1.17E14 4.11E14 5.63 1210 CONV1AEX 16 4.17 1.03E13 3.65E13 1.40E14 4.91E14 6.73 1211 CONV1BEX 16 4.17 1.72E13 0.00E+00 0.00E+00 0.00E+00 0.00 1212 S1030A 16 7.56 1.80E13 1.10E12 4.22E14 1.48E13 20.21 1213 S1030B 16 7.56 2.06E13 6.29E14 2.42E15 8.47E15 1.16 1227 CHEMLABEX#2 16 0.58 6.44E13 3.19E13 1.23E14 4.29E14 5.88 1233 SOLVENTEXTNEX 16 3.33 8.13E14 1.97E13 7.57E15 2.65E14 3.63 1234 SOLVENTEXTSEX 16 3.33 2.10E13 8.46E14 3.25E15 1.14E14 1.56 1220 CHEMLABFILTEX 17 5.56 8.56E14 4.03E13 1.55E14 5.43E14 7.44 1242 AC5 17 3.78 8.09E14 2.59E13 9.97E15 3.49E14 4.78 1244 AMMONFUMESCR1008A 17 1.89 8.82E14 1.41E13 5.44E15 1.91E14 2.61 1245 AMMONFUMESCR1008B 17 1.89 1.76E13 0.00E+00 0.00E+00 0.00E+00 0.00 1238 IFBAEXHAUST 18 4.72 8.31E14 3.33E13 1.28E14 4.48E14 6.14 1248 ERBIAFURNACEEX 18 8.17 9.80E14 6.79E13 2.61E14 9.14E14 12.52 1249 ERBIASCRUBBEREX 18 4.33 8.09E14 2.97E13 1.14E14 4.00E14 5.48 1250 ERBIACHANGEROOM 18 1.9 9.39E14 1.51E13 5.82E15 2.04E14 2.79 Total 9.91E12 3.81E13 1.33E12 182.83

  • ConcentrationLLDis8E14uCi/mL ReleaseRate(Ci/s)

Z:\\Groups\\Regulatory\\EH&SOperations\\Environment\\Environment2020\\PES_gaseouseffluent_JanJun2020.xlsx Lung/BoneOrganDoseduetoGaseousEffluents 1st half (Jan-Jun) 2nd half (Jul-Dec)

Total EPA STACK IDENTIFICATION uCi Uranium uCi Uranium uCi released Comply Run Results S-1030A 20.21 N/A 20.21 Dose (mrem/yr) 2.20E-02 use highest release to calculate X/Q used by COMPLY Stack height (m) 16 U-234 U-235 U-238 Dose from comply 0.01100 mrem/6 mo 1.10E-12 4.22E-14 1.48E-13 release quantity 20.21 uCi 2.02E-05 Ci App E table E-5 4000.00 m3/6 mo Effective Dose conversion EPA FGR 11 p150-151 U-234 3.58E-05 Sv/Bq 85.25%

U-235 3.32E-05 Sv/Bq 3.28%

U-238 3.20E-05 Sv/Bq 11.48%

weighted dose conversion 3.53E-05 Sv/Bq conversion factor 3700.00 mrem/pCi= factor* Sv/Bq weighted dose conversion 0.1305 mrem/pCi equations Dose (mrem) = R(a)*3.17e4*Q*(X/Q)*effective Dose conversion see RG1.109-25 Dose (mrem)/(R(a)*3.17e4*Q*effective Dose conversion)=(X/Q) 3.29E-05 X/Q Estimate Lung Dose using X/Q and semi-annual releases for 2020 Estimate Bone Dose using X/Q and semi-annual releases for 2020 App E table E-5 Lung Organ Dose conversion EPA FGR 11 p150-151 U-234 2.98E-04 Sv/Bq 85.25%

1.13E-06 Sv/Bq U-235 2.76E-04 Sv/Bq 3.28%

1.05E-06 Sv/Bq U-238 2.66E-04 Sv/Bq 11.48%

1.01E-06 Sv/Bq weighted dose conversion 2.94E-04 Sv/Bq 1.11E-06 Sv/Bq conversion factor 3700.00 mrem/pCi= factor* Sv/Bq 3700.00 mrem/pCi= factor* Sv/Bq weighted dose conversion 1.0864 mrem/pCi 4.12E-03 mrem/pCi release quantity 182.83 uCi/6 mo 182.83 uCi/6 mo 1.83E-04 Ci/6 mo 1.83E-04 Ci/6 mo Lung

  • 0.66 mrem/6 mo Bone
  • 2.51E-03 mrem/6 mo assume 80% residence Release Rate (Ci/s)

Z:\\Groups\\Regulatory\\EH&SOperations\\Environment\\Environment2020\\PES_gaseouseffluent_JanJun2020.xlsx

2020 Tc-99 Measured Concentrations Sum U & Tc-99 Month Actual kgal/month Actual gal/month U234 pCi/L U235 pCi/L U238 pCi/L Total U pCi/L Tc-99 pCi/L Total U & Tc-99 pCi/L U234 U-235 U-238 Tc-99 U234 pCi/L U235 pCi/L U238 pCi/L Tc-99 pCi/L U234 (uCi)

U-235 (uCi)

U-238 (uCi)

Tc-99 (uCi)

January 3667.702 3,667,702 20.2 1.15 3.34 24.7 0.00 24.7 280.421 15.965 46.367 0.000 1.70 0.469 0.697 25.4 23.600 6.511 9.676 352.609 February 3511.279 3,511,279 24.2 0.888 4.61 29.7 6.89 36.6 321.623 11.802 61.268 91.569 1.89 0.416 0.830 20.6 25.118 5.529 11.031 273.778 March 3273.403 3,273,403 21.3 0.935 4.01 26.2 23.5 49.7 263.903 11.584 49.683 291.161 1.78 0.426 0.777 22.6 22.054 5.278 9.627 280.010 April 2800.576 2,800,576 23.9 0.953 4.10 29.0 71.3 100.3 253.344 10.102 43.461 755.793 1.15 0.257 0.476 3.76 12.190 2.724 5.046 39.857 May 2999.495 2,999,495 22.5 1.05 3.59 27.1 63.2 90.3 255.444 11.921 40.758 717.515 1.61 0.399 0.649 4.96 18.278 4.530 7.368 56.311 June 3050.455 3,050,455 26.7 1.31 4.82 32.8 93.5 126.3 308.277 15.125 55.652 1079.548 1.76 0.441 0.754 4.18 20.321 5.092 8.706 48.262 Total (Jan-Jun) 19302.910 19,302,910 1683.014 76.499 297.188 2935.587 122 30 51 1051 Liters (L) 7.31E+07 Milliliters (ml) 7.31E+10 FIRST HALF LIQUID DISCHARGES Radionuclide Quantity Released (uCi)

U234 1683.0

+/-

122 U235 76.5

+/-

30 U238 297.2

+/-

51 Total U 2056.7 Tc-99 2935.6

+/-

1051 Total (Jan-Jun) 4992.3 - 1st HALF 2020 LIQUID EFFLUENT RADIOACTIVITY DISCHARGES Liquid Effluent Discharges Isotopic Uranium Measured Concentrations Total uCi/month Released (based on monthly GEL discharge samples)

Measurement Uncertainty / Error Uncertainty / Error 6.00E-10 1.05E-09 2056.7 uCi Uranium for 6-month period (all types) 4992.3 uCi Uranium & Tc-99 for 6-month period LLD (uCi/ml)

Error Average Concentration Released (uCi/ml) 6.00E-10 2.30E-08 9.65E-08 6.00E-10 4.07E-09 2.82E-08 6.00E-10 4.02E-08 Z:\\Groups\\Regulatory\\EH&S Operations\\Environment\\Environment 2020\\1st half 2020 Liquid Effluent.xlsx Whole Body Dose from Liquid Effluent Pathways - Potable Water Whole Body-Ingestion 365 liters Usage by adult/6 moU 10CFR20 7.3 x 105 (ml) which is the annual water intake of "Reference Man."

31293 mixing - dilution Dilution at difuser M

Congaree Flow 9388 cubic feet/sec see Nureg-1118 Environmental Assessment for renewam SNM-1107 May 1985 0.3 cubic ft/sec Average discharge F Effluent Flow 3.00E-01 cubic feet/sec effective bone effective bone 2.83E-04 U-234 mRem/pCi D

EPA Limiting Values of Radioanuclide Intake Sv/Bq Sv/Bq mRem/pCimRem/pCi 2.66E-04 U-235 mRem/pCi D

FRG no 11 1988 U-234 7.66E-08 1.13E-06 2.83E-04 4.18E-03 2.55E-04 U-238 mRem/pCi D

Exposure-to-dose conversion factors for ingestion U-235 7.19E-08 1.05E-06 2.66E-04 3.88E-03 1.46E-06 Tc-99 mRem/pCi D

U-238 6.88E-08 1.01E-06 2.55E-04 3.74E-03 Tc-99 3.95E-10 6.04E-11 1.46E-06 2.23E-07 12 hrs transit time t-p reg guide 1.109 table E-15 3.23557E-10 U-234 decay const

1.12404E-13 U-235 decay const

Nuclide T(1/2) yr T(1/2) hr

1.77058E-14 U-238 decay const

URANIUM234 2.45E+05 2.14E+09 3.24E-10 3.71407E-10 Tc-99 decay const

URANIUM235 7.04E+08 6.17E+12 1.12E-13 for comaprison only URANIUM238 4.47E+09 3.91E+13 1.77E-14 0.9999999961 U-234 exp(-t-p)

TC-99 2.13E+05 1.87E+09 3.71E-10 Part 20 table 2 1.0000000000 U-235 exp(-t-p)

Dose Conversion soluble forms 1.0000000000 U-238 exp(-t-p) uCi/ml milliters uCi pCi mRem mRem/pCi 0.9999999955 Tc-99 exp(-t-p)

U-234 3.00E-07 7.30E+05 2.19E-01 2.19E+05 50 2.28E-04 U-235 3.00E-07 7.30E+05 2.19E-01 2.19E+05 50 2.28E-04 Activity Released U-238 3.00E-07 7.30E+05 2.19E-01 2.19E+05 50 2.28E-04 Tc-99 6.00E-05 7.30E+05 4.38E+01 4.38E+07 50 1.14E-06 1.683E-03 U-234 release fraction Ci ICRP 69 Comparison 7.650E-05 U-235 release fraction Ci 2.972E-04 U-238 release fraction Ci Sv/Bq Rem/Bq mRem/pCi 2.936E-03 Tc-99 release fraction Ci adult 5.00E-08 0.005 1.85E-04 check U sum 0.00206 infant 3.70E-07 0.037 1.37E-03 bone-adult 7.90E-07 0.079 2.92E-03 4.77E-07 U-234 release fraction *dose factor*exp(-*tp) 2.04E-08 U-235 release fraction *dose factor*exp(-*tp) 7.57E-08 U-238 release fraction *dose factor*exp(-*tp) 4.29E-09 Tc-99 release fraction *dose factor*exp(-*tp) 5.77E-07 all nuclides sum of nuclides 42.76736 usage 1100*(usage*dilution)/flow 2.47E-05 mRem see regulatory guide 1.109 page 1.109-2 and 1.109-3 for formula and definition of terms.

Z:\\Groups\\Regulatory\\EH&S Operations\\Environment\\Environment 2020\\1st half 2020 Liquid Effluent.xlsx Dose to the Bone Surface from Liquid Effluent Pathways - Potable Water Bone Surface-Ingestion 365 liters Usage by adult/6 m U 10CFR20 7.3 x 105 (ml) which is the annual water intake of "Reference Man."

31293 mixing - dilution Dilution at difuser M

Congaree Flow 9388 cubic feet/sec see Nureg-1118 Environmental Assessment for renewam SNM-1107 May 1985 0.3 cubic ft/sec Average discharge F Effluent Flow 3.00E-01 cubic feet/sec effective bone effective bone 4.18E-03 U-234 mRem/pCi D-bone EPA Limiting Values of Radioanuclide Intake Sv/Bq Sv/Bq mRem/pCi mRem/pCi 3.88E-03 U-235 mRem/pCi D-bone FRG no 11 1988 U-234 7.66E-08 1.13E-06 2.83E-04 4.18E-03 3.74E-03 U-238 mRem/pCi D-bone Exposure-to-dose conversion factors for ingestion U-235 7.19E-08 1.05E-06 2.66E-04 3.88E-03 2.23E-07 Tc-99 mRem/pCi D-bone U-238 6.88E-08 1.01E-06 2.55E-04 3.74E-03 Tc-99 3.95E-10 6.04E-11 1.46E-06 2.23E-07 12 hrs transit time t-p reg guide 1table E-15 3.23557E-10 U-234 decay const

1.12404E-13 U-235 decay const

Nuclide T(1/2) yr T(1/2) hr

1.77058E-14 U-238 decay const

URANIUM234 2.45E+05 2.14E+09 3.24E-10 Part 20 table 2 3.71407E-10 Tc-99 decay const

URANIUM235 7.04E+08 6.17E+12 1.12E-13 Dose Conversion soluble forms URANIUM238 4.47E+09 3.91E+13 1.77E-14 0.9999999961 U-234 exp(-t-p)

TC-99 2.13E+05 1.87E+09 3.71E-10 uCi/ml milliters uCi pCi mRem mRem/pCi 1.0000000000 U-235 exp(-t-p)

U-234 3.00E-07 7.30E+05 2.19E-01 2.19E+05 50 2.28E-04 1.0000000000 U-238 exp(-t-p)

U-235 3.00E-07 7.30E+05 2.19E-01 2.19E+05 50 2.28E-04 0.9999999955 Tc-99 exp(-t-p)

U-238 3.00E-07 7.30E+05 2.19E-01 2.19E+05 50 2.28E-04 Tc-99 6.00E-05 7.30E+05 4.38E+01 4.38E+07 50 1.14E-06 Activity Released ICRP 69 Comparison 1.683E-03 U-234 release fraction Ci Sv/Bq Rem/Bq mRem/pCi 7.650E-05 U-235 release fraction Ci 2.972E-04 U-238 release fraction Ci adult 5.00E-08 0.005 1.85E-04 2.936E-03 Tc-99 release fraction Ci infant 3.70E-07 0.037 1.37E-03 bone-adult 7.90E-07 0.079 2.92E-03 check U sum 0.00206 7.04E-06 U-234 release fraction *dose factor*exp(-*tp) 2.97E-07 U-235 release fraction *dose factor*exp(-*tp) 1.11E-06 U-238 release fraction *dose factor*exp(-*tp) 6.56E-10 Tc-99 release fraction *dose factor*exp(-*tp) 8.45E-06 all nuclides sum of nuclides 42.76736 usage 1100*(usage*dilution)/flow 3.61E-04 mRem see regulatory guide 1.109 page 1.109-2 and 1.109-3 for formula and definition of terms.

Z:\\Groups\\Regulatory\\EH&S Operations\\Environment\\Environment 2020\\1st half 2020 Liquid Effluent.xlsx Whole Body Dose from Liquid Effluent Pathways - Aquatic Foods Whole Body 10.5 Kg Usage by adult/6 m U see regulatory guide 1.109 page 1.109-40 table E-5, Recommended Values for U(ap) 31293 mixing - dilution Dilution at difuser M

Congaree Flow 9388 cubic feet/sec see Nureg-1118 Environmental Assessment for renewam SNM-1107 May 1985 0.3 cubic ft/sec Average discharge F Effluent Flow 3.00E-01 cubic feet/sec effective bone effective bone 2.83E-04 U-234 mRem/pCi D

EPA Limiting Values of Radioanuclide Intake Sv/Bq Sv/Bq mRem/pCi mRem/pCi 2.66E-04 U-235 mRem/pCi D

FRG no 11 1988 U-234 7.66E-08 1.13E-06 2.83E-04 4.18E-03 2.55E-04 U-238 mRem/pCi D

Exposure-to-dose conversion factors for ingestion U-235 7.19E-08 1.05E-06 2.66E-04 3.88E-03 1.46E-06 Tc-99 mRem/pCi D

U-238 6.88E-08 1.01E-06 2.55E-04 3.74E-03 Tc-99 3.95E-10 6.04E-11 1.46E-06 2.23E-07 24 hrs transit time t-p reg guide 1table E-15 3.23557E-10 U-234 decay const

1.12404E-13 U-235 decay const

Nuclide T(1/2) yr T(1/2) hr

1.77058E-14 U-238 decay const

URANIUM234 2.45E+05 2.14E+09 3.24E-10 for comaprison only 3.71407E-10 Tc-99 decay const

URANIUM235 7.04E+08 6.17E+12 1.12E-13 URANIUM238 4.47E+09 3.91E+13 1.77E-14 Part 20 table 2 soluble forms 0.99999999223 U-234 exp(-t-p)

TC-99 2.13E+05 1.87E+09 3.71E-10 Dose Conversion 1.00000000000 U-235 exp(-t-p) uCi/ml milliters uCi pCi mRem mRem/pCi 1.00000000000 U-238 exp(-t-p)

U-234 3.00E-07 7.30E+05 2.19E-01 2.19E+05 50 2.28E-04 0.99999999109 Tc-99 exp(-t-p)

U-235 3.00E-07 7.30E+05 2.19E-01 2.19E+05 50 2.28E-04 U-238 3.00E-07 7.30E+05 2.19E-01 2.19E+05 50 2.28E-04 Activity Released Tc-99 6.00E-05 7.30E+05 4.38E+01 4.38E+07 50 1.14E-06 ICRP 69 Comparison 1.683E-03 U-234 release fraction Ci 7.650E-05 U-235 release fraction Ci Sv/Bq Rem/Bq mRem/pCi 2.972E-04 U-238 release fraction Ci 2.936E-03 Tc-99 release fraction Ci adult 5.00E-08 0.005 1.85E-04 infant 3.70E-07 0.037 1.37E-03 check U sum 0.00206 bone-adult 7.90E-07 0.079 2.92E-03 bioaccumulation factor BNWL-2075 9.54E-07 U-234 release fraction *bioaccumulation factor*dose factor*exp(-*tp) 2 UC-11 4.07E-08 U-235 release fraction *bioaccumulation factor*dose factor*exp(-*tp) 2 Methodology for Calculation of Radiation Doses 1.51E-07 U-238 release fraction *bioaccumulation factor*dose factor*exp(-*tp) 2 in the Environs from Nuclear Fuel 6.44E-08 Tc-99 release fraction *bioaccumulation factor*dose factor*exp(-*tp) 15 Cycle Facilities 1.21E-06 all nuclides sum of nuclides 1.23029 usage 1100*(usage*dilution)/flow 1.49E-06 mRem see regulatory guide 1.109 page 1.109-2 and 1.109-3 for formula and definition of terms.

Z:\\Groups\\Regulatory\\EH&S Operations\\Environment\\Environment 2020\\1st half 2020 Liquid Effluent.xlsx Dose to the Bone Surface from Liquid Effluent Pathways - Aquatic Foods Bone Surface 10.5 Kg Usage by adult/6 mU see regulatory guide 1.109 page 1.109-40 table E-5, Recommended Values for U(ap) 31293 mixing - dilution Dilution at difuser M

Congaree Flow 9388 cubic feet/sec see Nureg-1118 Environmental Assessment for renewam SNM-1107 May 1985 0.3 cubic ft/sec Average discharge F Effluent Flow 3.00E-01 cubic feet/sec effective bone effective bone 4.18E-03 U-234 mRem/pCi D

EPA Limiting Values of Radioanuclide Intake Sv/Bq Sv/Bq mRem/pCimRem/pCi 3.88E-03 U-235 mRem/pCi D

FRG no 11 1988 U-234 7.66E-08 1.13E-06 2.83E-04 4.18E-03 3.74E-03 U-238 mRem/pCi D

Exposure-to-dose conversion factors for ingestion U-235 7.19E-08 1.05E-06 2.66E-04 3.88E-03 2.23E-07 Tc-99 mRem/pCi D

U-238 6.88E-08 1.01E-06 2.55E-04 3.74E-03 Tc-99 3.95E-10 6.04E-11 1.46E-06 2.23E-07 24 hrs transit time t-p reg guide 1.109 table E-15 3.23557E-10 U-234 decay const

1.12404E-13 U-235 decay const

Nuclide T(1/2) yr T(1/2) hr

for comaprison only 1.77058E-14 U-238 decay const

URANIUM234 2.45E+05 2.14E+09 3.24E-10 3.71407E-10 Tc-99 decay const

URANIUM235 7.04E+08 6.17E+12 1.12E-13 Part 20 table 2 soluble forms URANIUM238 4.47E+09 3.91E+13 1.77E-14 Dose Conversion 0.99999999223 U-234 exp(-t-p)

TC-99 2.13E+05 1.87E+09 3.71E-10 uCi/ml milliters uCi pCi mRem mRem/pCi 1.00000000000 U-235 exp(-t-p)

U-234 3.00E-07 7.30E+05 2.19E-01 2.19E+05 50 2.28E-04 1.00000000000 U-238 exp(-t-p)

U-235 3.00E-07 7.30E+05 2.19E-01 2.19E+05 50 2.28E-04 0.99999999109 Tc-99 exp(-t-p)

U-238 3.00E-07 7.30E+05 2.19E-01 2.19E+05 50 2.28E-04 Tc-99 6.00E-05 7.30E+05 4.38E+01 4.38E+07 50 1.14E-06 Activity Released ICRP 69 Comparison 1.683E-03 U-234 release fraCi Sv/Bq Rem/Bq mRem/pCi 7.650E-05 U-235 release fraCi 2.972E-04 U-238 release fraCi adult 5.00E-08 0.005 1.85E-04 2.936E-03 Tc-99 release fraCi infant 3.70E-07 0.037 1.37E-03 bone-adult 7.90E-07 0.079 2.92E-03 check U sum 0.00206 bioaccumulation factor BNWL-2075 1.41E-05 U-234 release fraction *bioaccumulation factor*dose factor*exp(-*tp) 2 UC-11 5.94E-07 U-235 release fraction *bioaccumulation factor*dose factor*exp(-*tp) 2 Methodology for Calculation of Radiation Doses 2.22E-06 U-238 release fraction *bioaccumulation factor*dose factor*exp(-*tp) 2 in the Environs from Nuclear Fuel 9.84E-09 Tc-99 release fraction *bioaccumulation factor*dose factor*exp(-*tp) 15 Cycle Facilities 1.69E-05 all nuclides sum of nuclides 1.23029 usage 1100*(usage*dilution)/flow 2.08E-05 mRem see regulatory guide 1.109 page 1.109-2 and 1.109-3 for formula and definition of terms.

Z:\\Groups\\Regulatory\\EH&S Operations\\Environment\\Environment 2020\\1st half 2020 Liquid Effluent.xlsx Whole Body Dose from Liquid Effluent Pathways - Shoreline Deposits Whole Body 6 hr Usage by adult/6 mo U

see regulatory guide 1.109 page 1.109-40 table E-5, Recommended Values for U(ap) 31293 mixing - dilution Dilution at difuser M

Congaree Flow 9388 cubic feet/sec see Nureg-1118 Environmental Assessment for renewam SNM-1107 May 0.3 cubic ft/sec Average discharge F

Effluent Flow 3.00E-01 cubic feet/sec Sv/s:Bq/m^2 mrem/hr:pCi/m^2 9.86E-12 U-234 mRem*m^2/pCi*hr D

U-234 7.40E-19 9.86E-12 EPA FRG 12 Dose Coeff for exposure to contaminated ground surface 1.97E-09 U-235 mRem*m^2/pCi*hr D

U-235 1.48E-16 1.97E-09 7.34E-12 U-238 mRem*m^2/pCi*hr D

U-238 5.51E-19 7.34E-12 1.04E-12 Tc-99 mRem*m^2/pCi*hr D

Tc-99 7.80E-20 1.04E-12 12 hrs transit time t-p see regulatory guide 1.109 page 1.109-69 table E-15, Recommended Values 131040 hrs xposure time of sedime t-b page 1.109-68 t-i 3.23557E-10 U-234 decay const

Nuclide T(1/2) yr T(1/2) hr

T(1/2) day 1.12404E-13 U-235 decay const

URANIUM234 2.45E+05 2.14E+09 3.24E-10 8.90E+07 1.77058E-14 U-238 decay const

URANIUM235 7.04E+08 6.17E+12 1.12E-13 2.56E+11 3.71407E-10 Tc-99 decay const

URANIUM238 4.47E+09 3.91E+13 1.77E-14 1.63E+12 TC-99 2.13E+05 1.87E+09 3.71E-10 7.75E+07 0.0000423980 U-234 exp(-t-p)*[1-exp(-t-b)]

0.0000000147 U-235 exp(-t-p)*[1-exp(-t-b)]

0.0000000023 U-238 exp(-t-p)*[1-exp(-t-b)]

0.0000486679 Tc-99 exp(-t-p)*[1-exp(-t-b)]

Activity Released 1.683E-03 U-234 release fraction Ci 7.650E-05 U-235 release fraction Ci 2.972E-04 U-238 release fraction Ci 2.936E-03 Tc-99 release fraction Ci check U sum 0.00206 6.26E-11 U-234 release fraction *dose factor*exp(-t-p)*1-exp(-t-b)*t-i 5.69E-10 U-235 release fraction *dose factor*exp(-t-p)*1-exp(-t-b)*t-i 8.23E-12 U-238 release fraction *dose factor*exp(-t-p)*1-exp(-t-b)*t-i 1.15E-11 Tc-99 release fraction *dose factor*exp(-t-p)*1-exp(-t-b)*t-i 6.51E-10 all nuclides sum of nuclides 1.406050 usage 11000*(usage*dilution*shore width factor)/flow 9.16E-10 mRem see regulatory guide 1.109 page 1.109-2 and 1.109-3 for formula and definition of terms.

see regulatory guide 1.109 page 1.109-40 table A-2,Shore width Z:\\Groups\\Regulatory\\EH&S Operations\\Environment\\Environment 2020\\1st half 2020 Liquid Effluent.xlsx 2020 Isotopic Fractions Based on the plant nominal enrichment for 2020 Nuclide Average Specific Activity Weighted wt%

Ci/g Activity Activity U-234 0.04 6.220E-03 2.388E-06 85.25 U-235 4.25 2.160E-06 9.180E-08 3.28 U-238 95.70 3.360E-07 3.216E-07 11.48 Total 100.0 2.802E-06 100.00 Z:\\Groups\\Regulatory\\EH&S Operations\\Environment\\Environment 2020\\1st half 2020 Liquid Effluent.xlsx

COMPLY: V1.6. 8/13/2020 4:43 40 CFR Part 61 National Emission Standards for Hazardous Air Pollutants REPORT ON COMPLIANCE WITH THE CLEAN AIR ACT LIMITS FOR RADIONUCLIDE EMISSIONS FROM THE COMPLY CODE - V1.6.

Prepared by:

WESTINGHOUSE ELECTRIC CO.

COLUMBIA FUEL FABRICATION FACILITY 5801 BLUFF RD. HOPKINS, SC 29061 DAVID WAGONER 803.647.1919 Prepared for:

U.S. Environmental Protection Agency Office of Radiation and Indoor Air Washington, DC 20460 0 - Comply Results

2020 SEMI-ANNUAL DOSE TO THE PUBLIC DUE TO GASEOUS EFFLUENT SCREENING LEVEL 2 DATA ENTERED:

RELEASE RATES FOR STACK 1.

Release Rate Nuclide (curies/SECOND)

U-234 Y 9.050E-14 U-235 Y 3.480E-15 U-238 Y 1.220E-14 RELEASE RATES FOR STACK 2.

Release Rate Nuclide (curies/SECOND)

U-234 Y 3.900E-13 U-235 Y 1.500E-14 U-238 Y 5.260E-14 RELEASE RATES FOR STACK 3.

Release Rate Nuclide (curies/SECOND)

U-234 Y 9.210E-13 U-235 Y 3.540E-14 U-238 Y 1.240E-13 RELEASE RATES FOR STACK 4.

Release Rate Nuclide (curies/SECOND)

U-234 Y 3.240E-12 U-235 Y 1.250E-13 U-238 Y 4.360E-13 RELEASE RATES FOR STACK 5.

Release Rate Nuclide (curies/SECOND)

U-234 Y 8.840E-13 U-235 Y 3.400E-14 U-238 Y 1.190E-13 RELEASE RATES FOR STACK 6.

Release Rate Nuclide (curies/SECOND)

U-234 Y 2.120E-12 U-235 Y 8.170E-14 U-238 Y 2.860E-13 RELEASE RATES FOR STACK 7.

Release Rate Nuclide (curies/SECOND)

U-234 Y 8.040E-13 U-235 Y 3.090E-14 U-238 Y 1.080E-13 RELEASE RATES FOR STACK 8.

Release Rate Nuclide (curies/SECOND)

U-234 Y 1.460E-12 U-235 Y 5.620E-14 U-238 Y 1.970E-13 SITE DATA FOR STACK 1.

Release height 10 meters.

Building height 9 meters.

The source and receptor are not on the same building.

Distance from the source to the receptor is 595 meters.

Building width 137 meters.

SITE DATA FOR STACK 2.

Release height 11 meters.

Building height 9 meters.

The source and receptor are not on the same building.

Distance from the source to the receptor is 595 meters.

Building width 137 meters.

SITE DATA FOR STACK 3.

Release height 12 meters.

Building height 9 meters.

The source and receptor are not on the same building.

Distance from the source to the receptor is 595 meters.

Building width 137 meters.

SITE DATA FOR STACK 4.

Release height 13 meters.

Building height 9 meters.

The source and receptor are not on the same building.

Distance from the source to the receptor is 595 meters.

Building width 137 meters.

SITE DATA FOR STACK 5.

Release height 15 meters.

Building height 9 meters.

The source and receptor are not on the same building.

Distance from the source to the receptor is 595 meters.

Building width 137 meters.

SITE DATA FOR STACK 6.

Release height 16 meters.

Building height 9 meters.

The source and receptor are not on the same building.

Distance from the source to the receptor is 595 meters.

Building width 137 meters.

SITE DATA FOR STACK 7.

Release height 17 meters.

Building height 9 meters.

The source and receptor are not on the same building.

Distance from the source to the receptor is 595 meters.

Building width 137 meters.

SITE DATA FOR STACK 8.

Release height 18 meters.

Building height 9 meters.

The source and receptor are not on the same building.

Distance from the source to the receptor is 595 meters.

Building width 137 meters.

Default mean wind speed used (2.0 m/sec).

NOTES:

Input parameters outside the "normal" range:

Building (width) is unusually WIDE.

Receptor is unusually FAR.

RESULTS:

Effective dose equivalent: 0.2 mrem/yr.

      • Comply at level 2.

This facility is in COMPLIANCE.

It may or may not be EXEMPT from reporting to the EPA.

You may contact your regional EPA office for more information.

                    • END OF COMPLIANCE REPORT **********

COMPLY: V1.6. 8/13/2020 4:33 40 CFR Part 61 National Emission Standards for Hazardous Air Pollutants REPORT ON COMPLIANCE WITH THE CLEAN AIR ACT LIMITS FOR RADIONUCLIDE EMISSIONS FROM THE COMPLY CODE - V1.6.

Prepared by:

WESTINGHOUSE ELECTRIC CO.

COLUMBIA FUEL FABRICATION FACILITY 5801 BLUFF RD. HOPKINS, SC 29061 DAVID WAGONER 803.647.1919 Prepared for:

U.S. Environmental Protection Agency Office of Radiation and Indoor Air Washington, DC 20460

S1030A SCREENING LEVEL 2 DATA ENTERED:

Release Rate Nuclide (curies/SECOND)

U-234 Y 1.100E-12 U-235 Y 4.220E-14 U-238 Y 1.480E-13 Release height 16 meters.

Building height 9 meters.

The source and receptor are not on the same building.

Distance from the source to the receptor is 595 meters.

Building width 137 meters.

Default mean wind speed used (2.0 m/sec).

NOTES:

Input parameters outside the "normal" range:

Building (width) is unusually WIDE.

Receptor is unusually FAR.

RESULTS:

Effective dose equivalent: 2.2E-02 mrem/yr.

      • Comply at level 2.

This facility is in COMPLIANCE.

It may or may not be EXEMPT from reporting to the EPA.

You may contact your regional EPA office for more information.

                    • END OF COMPLIANCE REPORT **********
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