RA-19-0130, Submittal of Annual Radioactive Effluent Release Report 2018

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Submittal of Annual Radioactive Effluent Release Report 2018
ML19119A097
Person / Time
Site: Brunswick  Duke Energy icon.png
Issue date: 04/25/2019
From: Pierce J
Duke Energy Progress
To:
Document Control Desk, Office of Nuclear Reactor Regulation
References
RA-19-0130
Download: ML19119A097 (58)
v • d • e


Text

Brunswick Nuclear Plant ef_~ DUKE P.O. Box 10429

~ ENERGY Southport, NC 28461 APR 2 5 2019 10 CFR 50.36a Serial: RA-19-0130 U.S. Nuclear Regulatory Commission ATIN: Document Control Desk Washington, DC 20555-0001

Subject:

Brunswick Steam Electric Plant, Unit Nos. 1 and 2 Renewed Facility Operating License Nos. DPR-71 and DPR-62 Docket Nos. 50-325 and 50-324 Annual Radioactive Effluent Release Report - 2018 Ladies and Gentlemen:

In accordance with 10 CFR 50.36a and Technical Specification (TS) 5.6.3 for the Brunswick Steam Electric Plant (BSEP), Unit Nos. 1 and 2, Duke Energy Progress, LLC, is submitting the enclosed Radioactive Effluent Release Report for 2018. This report covers the period from January 1, 2018, through December 31, 2018.

TS 5.5.1, "Offsite Dose Calculation Manual (ODCM)," requires changes to the ODCM be submitted as part of, or concurrent with, the Radioactive Effluent Release Report. The ODCM was not revised during this report period.

No regulatory commitments are contained in this submittal. Please refer any questions regarding this submittal to Mr. Stephen Yodersmith, Brunswick Regulatory Affairs, at (910) 832-2568.

Sincer y, ~

Jerry Pierce Manager - Nuclear Support Services Brunswick Steam Electric Plant SBY/sby

Enclosure:

Annual Radioactive Effluent Release Report - 2018

U.S. Nuclear Regulatory Commission Page 2 of 2 cc (with enclosure):

U.S. Nuclear Regulatory Commission, Region II ATTN: Ms. Catherine Haney, Regional Administrator 245 Peachtree Center Ave, NE, Suite 1200 Atlanta, GA 30303-1257 U.S. Nuclear Regulatory Commission ATTN: Mr. Gale Smith, NRC Senior Resident Inspector 8470 River Road Southport, NC 28461-8869 U.S. Nuclear Regulatory Commission ATTN: Mr. Dennis J. Galvin 11555 Rockville Pike Rockville, MD 20852-2738 Chair - North Carolina Utilities Commission (Electronic Copy Only) 4325 Mail Service Center Raleigh, NC 27699-4300 swatson@ncuc.net Mr. W. Lee Cox, III, Section Chief (Electronic Copy Only)

Radiation Protection Section North Carolina Department of Health and Human Services 1645 Mail Service Center Raleigh, NC 27699-1645 lee.cox@dhhs.nc.gov Mr. Patrick D. Cox (Electronic Copy Only)

Environmental Program North Carolina Department of Health and Human Services 1645 Mail Service Center Raleigh, NC 27699 patrick.cox@dhhs.nc.gov

RA-19-0130 Enclosure Annual Radioactive Effluent Release Report - 2018

Brunswick Steam Electric Plant Units 1 and 2 Annual Radioactive Effluent Release Report January 1, 2018 through December 31, 2018 Dockets 50-325 and 50-324

Introduction The Annual Radioactive Effluent Release Report is pursuant to Brunswick Steam Electric Plant Technical Specification 5.6.3 and ODCM Specification 7.4.2. The below listed attachments to this report provide the required information. In addition, if a revision to the ODCM has occurred during the report period, it is included pursuant to Brunswick Steam Electric Plant Technical Specification 5.5.1.

Attachment 1 Summary of Gaseous and Liquid Effluents Attachment 2 Supplemental Information Attachment 3 Solid Radioactive Waste Disposal Attachment 4 Meteorological Data Attachment 5 Unplanned Offsite Releases Attachment 6 Assessment of Radiation Dose from Radioactive Effluents to Members of the Public Attachment 7 Information to Support the NEI Ground Water Protection Initiative Attachment 8 Inoperable Equipment Attachment 9 Summary of Changes to the Offsite Dose Calculation Manual Attachment 10 Summary of Changes to the Process Control Program Attachment 11 Summary of Major Modifications to the Radioactive Waste Treatment Systems Attachment 12 Errata to a Previous Year's ARERR

Attachment 1 Summary of Gaseous and Liquid Effluents Brunswick Steam Electric Plant Units 1 & 2 Period 1/1/2018 - 12/31/2018 ATTACHMENT 1 Summary of Gaseous and Liquid Effluents This attachment includes a summary of the quantities of radioactive liquid and gaseous effluents as outlined in Regulatory Guide 1.21, Appendix B.

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Attachment 1 Summary of Gaseous and Liquid Effluents Brunswick Steam Electric Plant Units 1 & 2 Period 1/1/2018 - 12/31/2018 Gaseous Effluents - Summation of All Releases Units Qtr 1 Qtr 2 Qtr 3 Qtr 4 Year A. Fission and Activation Gases

1. Total Release Ci 7.34E+01 5.42E+01 8.77E+01 2.36E+02 4.51E+02
2. Avg. Release Rate µCi/sec 9.43E+00 6.90E+00 1.10E+01 2.97E+01 1.43E+01 B. Iodine-131
1. Total Release Ci 3.82E-03 1.92E-03 2.61E-03 2.93E-03 1.13E-02
2. Avg. Release Rate µCi/sec 4.91E-04 2.44E-04 3.28E-04 3.68E-04 3.58E-04 C. Particulates Half-Life 8 days
1. Total Release Ci 2.17E-04 3.28E-04 5.39E-04 3.88E-04 1.47E-03
2. Avg. Release Rate µCi/sec 2.79E-05 4.17E-05 6.78E-05 4.89E-05 4.66E-05 D. Tritium
1. Total Release Ci 4.75E+01 3.41E+01 4.02E+01 4.03E+01 1.62E+02
2. Avg. Release Rate µCi/sec 6.11E+00 4.34E+00 5.06E+00 5.07E+00 5.15E+00 E. Carbon-14
1. Total Release Ci 4.56E+00 5.35E+00 5.31E+00 5.62E+00 2.08E+01
2. Avg. Release Rate µCi/sec 5.86E-01 6.81E-01 6.68E-01 7.06E-01 6.60E-01 F. Gross Alpha
1. Total Release Ci 2.45E-08 0.00E+00 0.00E+00 0.00E+00 2.45E-08 Page 1-2

Attachment 1 Summary of Gaseous and Liquid Effluents Brunswick Steam Electric Plant Units 1 & 2 Period 1/1/2018 - 12/31/2018 Gaseous Effluents - Elevated Releases - Continuous Mode Units Qtr 1 Qtr 2 Qtr 3 Qtr 4 Year A. Fission and Activation Gases Ar-41 Ci 0.00E+00 0.00E+00 0.00E+00 1.07E+00 1.07E+00 Kr-85m Ci 5.02E+00 9.89E+00 6.90E+00 1.78E+01 3.96E+01 Kr-85 Ci 5.16E+00 0.00E+00 0.00E+00 0.00E+00 5.16E+00 Kr-87 Ci 1.50E+00 4.15E-01 3.39E-01 2.22E+01 2.45E+01 Kr-88 Ci 2.21E+00 5.99E-01 6.38E-01 3.37E+01 3.71E+01 Xe-133m Ci 3.87E-02 0.00E+00 0.00E+00 0.00E+00 3.87E-02 Xe-133 Ci 2.14E+01 1.62E+01 1.52E+01 1.59E+01 6.87E+01 Xe-135m Ci 7.47E+00 2.67E+00 6.78E+00 1.44E+01 3.13E+01 Xe-135 Ci 6.91E+00 9.02E+00 1.81E+01 8.47E+01 1.19E+02 Xe-138 Ci 1.27E+01 1.31E+01 3.81E+01 4.52E+01 1.09E+02 Total for Period Ci 6.24E+01 5.19E+01 8.60E+01 2.35E+02 4.35E+02 B. Iodines I-131 Ci 2.67E-03 1.59E-03 2.19E-03 2.37E-03 8.82E-03 I-133 Ci 4.33E-03 9.40E-03 1.07E-02 1.20E-02 3.64E-02 I-135 Ci 4.08E-03 1.12E-02 1.21E-02 1.29E-02 4.03E-02 Total for Period Ci 1.11E-02 2.22E-02 2.50E-02 2.73E-02 8.56E-02 C. Particulates Half-Life 8 days Co-60 Ci 1.54E-06 3.65E-06 9.61E-06 2.08E-05 3.56E-05 Sr-89 Ci 1.45E-07 2.04E-05 1.02E-04 4.34E-05 1.66E-04 Ba-140 Ci 8.22E-06 3.52E-05 7.88E-05 7.17E-05 1.94E-04 La-140 Ci 2.14E-05 6.56E-05 1.45E-04 1.21E-04 3.53E-04 Total for Period Ci 3.13E-05 1.25E-04 3.35E-04 2.57E-04 7.48E-04 D. Tritium H-3 Ci 1.43E+01 1.42E+01 2.04E+01 1.63E+01 6.52E+01 E. Carbon-14 C-14 Ci 1.82E+00 2.14E+00 2.12E+00 2.25E+00 8.33E+00 F. Gross Alpha Total for Period Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Page 1-3

Attachment 1 Summary of Gaseous and Liquid Effluents Brunswick Steam Electric Plant Units 1 & 2 Period 1/1/2018 - 12/31/2018 Gaseous Effluents - Elevated Releases - Batch Mode

  • Units Qtr 1 Qtr 2 Qtr 3 Qtr 4 Year A. Fission and Activation Gases N/A Ci - - - - -

Total for Period Ci - - - - -

B. Iodines N/A Ci - - - - -

Total for Period Ci - - - - -

C. Particulates Half-Life 8 days N/A Ci - - - - -

Total for Period Ci - - - - -

D. Tritium N/A Ci - - - - -

E. Carbon-14 N/A Ci - - - - -

F. Gross Alpha Total for Period Ci - - - - -

  • Brunswick Steam Electric Plant Units 1 and 2 do not have batch elevated releases.

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Attachment 1 Summary of Gaseous and Liquid Effluents Brunswick Steam Electric Plant Units 1 & 2 Period 1/1/2018 - 12/31/2018 Gaseous Effluents - Ground Releases - Continuous Mode Units Qtr 1 Qtr 2 Qtr 3 Qtr 4 Year A. Fission and Activation Gases Kr-85m Ci 0.00E+00 6.23E-02 3.22E-02 7.66E-03 1.02E-01 Kr-87 Ci 0.00E+00 0.00E+00 0.00E+00 3.92E-02 3.92E-02 Xe-133 Ci 7.51E+00 8.54E-01 0.00E+00 0.00E+00 8.36E+00 Xe-135 Ci 3.43E+00 1.44E+00 1.68E+00 1.10E+00 7.65E+00 Total for Period Ci 1.09E+01 2.36E+00 1.71E+00 1.15E+00 1.61E+01 B. Iodines I-131 Ci 2.82E-04 2.69E-06 2.28E-05 4.82E-06 3.12E-04 I-133 Ci 1.44E-04 1.38E-05 3.69E-05 0.00E+00 1.95E-04 I-135 Ci 6.03E-05 2.19E-05 5.73E-04 0.00E+00 6.55E-04 Total for Period Ci 4.87E-04 3.84E-05 6.32E-04 4.82E-06 1.16E-03 C. Particulates Half-Life 8 days None Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Total for Period Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 D. Tritium H-3 Ci 2.33E+01 1.27E+01 1.04E+01 1.14E+01 5.78E+01 E. Carbon-14 C-14 Ci 9.12E-01 1.07E+00 1.06E+00 1.12E+00 4.16E+00 F. Gross Alpha Total for Period Ci 2.45E-08 0.00E+00 0.00E+00 0.00E+00 2.45E-08 Page 1-5

Attachment 1 Summary of Gaseous and Liquid Effluents Brunswick Steam Electric Plant Units 1 & 2 Period 1/1/2018 - 12/31/2018 Gaseous Effluents - Ground Releases - Batch Mode

  • Units Qtr 1 Qtr 2 Qtr 3 Qtr 4 Year A. Fission and Activation Gases N/A Ci - - - - -

Total for Period Ci - - - - -

B. Iodines N/A Ci - - - - -

Total for Period Ci - - - - -

C. Particulates Half-Life 8 days N/A Ci - - - - -

Total for Period Ci - - - - -

D. Tritium N/A Ci - - - - -

E. Carbon-14 N/A Ci - - - - -

F. Gross Alpha Total for Period Ci - - - - -

  • Brunswick Steam Electric Plant Units 1 and 2 do not have batch ground releases.

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Attachment 1 Summary of Gaseous and Liquid Effluents Brunswick Steam Electric Plant Units 1 & 2 Period 1/1/2018 - 12/31/2018 Gaseous Effluents - Mixed-Mode Releases - Continuous Mode Units Qtr 1 Qtr 2 Qtr 3 Qtr 4 Year A. Fission and Activation Gases None Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Total for Period Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 B. Iodines I-131 Ci 8.67E-04 3.28E-04 3.94E-04 5.53E-04 2.14E-03 I-133 Ci 9.73E-04 2.48E-03 3.36E-03 4.47E-03 1.13E-02 I-135 Ci 0.00E+00 3.04E-03 5.82E-03 7.35E-03 1.62E-02 Total for Period Ci 1.84E-03 5.85E-03 9.57E-03 1.24E-02 2.97E-02 C. Particulates Half-Life 8 days Cr-51 Ci 9.97E-06 2.61E-05 1.57E-05 0.00E+00 5.18E-05 Mn-54 Ci 6.35E-06 8.21E-06 1.73E-05 6.89E-06 3.88E-05 Co-57 Ci 1.34E-06 0.00E+00 0.00E+00 0.00E+00 1.34E-06 Co-58 Ci 4.41E-05 6.03E-05 3.36E-05 2.28E-05 1.61E-04 Co-60 Ci 1.24E-04 1.08E-04 1.37E-04 8.66E-05 4.56E-04 La-140 Ci 0.00E+00 0.00E+00 0.00E+00 1.54E-05 1.54E-05 Total for Period Ci 1.85E-04 2.03E-04 2.03E-04 1.32E-04 7.23E-04 D. Tritium H-3 Ci 9.93E+00 7.18E+00 9.40E+00 1.26E+01 3.91E+01 E. Carbon-14 C-14 Ci 1.82E+00 2.14E+00 2.12E+00 2.25E+00 8.33E+00 F. Gross Alpha Total for Period Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Page 1-7

Attachment 1 Summary of Gaseous and Liquid Effluents Brunswick Steam Electric Plant Units 1 & 2 Period 1/1/2018 - 12/31/2018 Gaseous Effluents - Mixed-Mode Releases - Batch Mode

  • Units Qtr 1 Qtr 2 Qtr 3 Qtr 4 Year A. Fission and Activation Gases N/A Ci - - - - -

Total for Period Ci - - - - -

B. Iodines N/A Ci - - - - -

Total for Period Ci - - - - -

C. Particulates Half-Life 8 days N/A Ci - - - - -

Total for Period Ci - - - - -

D. Tritium N/A Ci - - - - -

E. Carbon-14 N/A Ci - - - - -

F. Gross Alpha Total for Period Ci - - - - -

  • Brunswick Steam Electric Plant Units 1 and 2 do not have batch mixed-mode releases.

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Attachment 1 Summary of Gaseous and Liquid Effluents Brunswick Steam Electric Plant Units 1 & 2 Period 1/1/2018 - 12/31/2018 Liquid Effluents - Summation of All Releases - Discharge Canal Units Qtr 1 Qtr 2 Qtr 3 Qtr 4 Year A. Fission and Activation Products *

1. Total Release Ci 1.40E-03 1.09E-03 1.20E-03 2.24E-03 5.93E-03
2. Avg. Diluted Conc. µCi/ml 3.71E-12 2.23E-12 2.39E-12 4.76E-12 3.27E-12 B. Tritium
1. Total Release Ci 3.37E+01 4.24E+01 3.13E+01 4.00E+01 1.47E+02
2. Avg. Diluted Conc. µCi/ml 8.91E-08 8.65E-08 6.24E-08 8.51E-08 8.08E-08 C. Dissolved & Entrained Gases
1. Total Release Ci 6.13E-04 1.03E-03 3.93E-02 2.84E-02 6.93E-02
2. Avg. Diluted Conc. µCi/ml 1.62E-12 2.10E-12 7.84E-11 6.04E-11 3.56E-11 D. Gross Alpha
1. Total Release Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 E. Volume of Liquid Waste
1. Batch Releases liters 2.01E+06 3.28E+06 3.02E+06 3.00E+06 1.13E+07
2. Continuous Releases liters 9.52E+07 1.19E+08 3.26E+08 2.00E+08 7.40E+08 F. Volume of Dilution Water
1. All Releases liters 3.78E+11 4.90E+11 5.01E+11 4.70E+11 1.84E+12 Excludes tritium, dissolved and entrained noble gases, and gross alpha.

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Attachment 1 Summary of Gaseous and Liquid Effluents Brunswick Steam Electric Plant Units 1 & 2 Period 1/1/2018 - 12/31/2018 Liquid Effluents - Summation of All Releases - Marsh Area Units Qtr 1 Qtr 2 Qtr 3 Qtr 4 Year A. Fission and Activation Products *

1. Total Release Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00
2. Avg. Diluted Conc. µCi/ml 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 B. Tritium
1. Total Release Ci 2.93E-02 1.14E-02 0.00E+00 2.11E-02 6.18E-02
2. Avg. Diluted Conc. µCi/ml 5.84E-07 2.24E-07 0.00E+00 4.11E-07 3.05E-07 C. Dissolved & Entrained Gases
1. Total Release Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00
2. Avg. Diluted Conc. µCi/ml 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 D. Gross Alpha
1. Total Release Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00
2. Avg. Diluted Conc. µCi/ml 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 E. Volume of Liquid Waste
1. Batch Releases liters 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00
2. Continuous Releases liters 5.02E+07 5.07E+07 5.13E+07 5.13E+07 2.04E+08 F. Volume of Dilution Water
1. All Releases liters 5.02E+07 5.07E+07 5.13E+07 5.13E+07 2.04E+08 Excludes tritium, dissolved and entrained noble gases, and gross alpha.

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Attachment 1 Summary of Gaseous and Liquid Effluents Brunswick Steam Electric Plant Units 1 & 2 Period 1/1/2018 - 12/31/2018 Liquid Effluents - Continuous Mode - Discharge Canal Units Qtr 1 Qtr 2 Qtr 3 Qtr 4 Year A. Fission and Activation Products None Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Total for Period Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 B. Tritium H-3 Ci 6.74E-03 7.08E-03 6.26E-03 3.86E-03 2.39E-02 C. Dissolved & Entrained Gases None Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Total for Period Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 D. Gross Alpha Total for Period Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Page 1-11

Attachment 1 Summary of Gaseous and Liquid Effluents Brunswick Steam Electric Plant Units 1 & 2 Period 1/1/2018 - 12/31/2018 Liquid Effluents - Continuous Mode - Marsh Area Units Qtr 1 Qtr 2 Qtr 3 Qtr 4 Year A. Fission and Activation Products None Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Total for Period Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 B. Tritium H-3 Ci 2.93E-02 1.14E-02 0.00E+00 2.11E-02 6.18E-02 C. Dissolved & Entrained Gases None Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Total for Period Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 D. Gross Alpha Total for Period Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Page 1-12

Attachment 1 Summary of Gaseous and Liquid Effluents Brunswick Steam Electric Plant Units 1 & 2 Period 1/1/2018 - 12/31/2018 Liquid Effluents - Batch Mode - Discharge Canal Units Qtr 1 Qtr 2 Qtr 3 Qtr 4 Year A. Fission and Activation Products Mn-54 Ci 7.22E-05 0.00E+00 0.00E+00 0.00E+00 7.22E-05 Co-58 Ci 4.32E-05 0.00E+00 0.00E+00 0.00E+00 4.32E-05 Co-60 Ci 2.39E-04 5.94E-05 2.70E-05 1.74E-05 3.43E-04 Zn-65 Ci 1.43E-05 0.00E+00 0.00E+00 0.00E+00 1.43E-05 Sb-124 Ci 2.80E-05 5.85E-05 0.00E+00 0.00E+00 8.65E-05 Sb-125 Ci 6.78E-06 4.11E-05 0.00E+00 0.00E+00 4.79E-05 I-131 Ci 7.94E-04 3.57E-04 4.54E-04 8.13E-04 2.42E-03 I-132 Ci 0.00E+00 0.00E+00 1.34E-06 1.71E-06 3.05E-06 I-133 Ci 1.48E-04 5.41E-04 6.67E-04 1.24E-03 2.60E-03 I-134 Ci 1.15E-05 0.00E+00 0.00E+00 0.00E+00 1.15E-05 I-135 Ci 0.00E+00 2.21E-05 4.66E-05 1.60E-04 2.29E-04 Cs-134 Ci 1.10E-05 0.00E+00 0.00E+00 0.00E+00 1.10E-05 Cs-137 Ci 3.36E-05 1.34E-05 2.16E-06 9.38E-07 5.01E-05 Total for Period Ci 1.40E-03 1.09E-03 1.20E-03 2.24E-03 5.93E-03 B. Tritium H-3 Ci 3.37E+01 4.24E+01 3.13E+01 4.00E+01 1.47E+02 C. Dissolved & Entrained Gases Xe-133 Ci 1.04E-04 2.32E-04 3.74E-04 2.19E-04 9.29E-04 Xe-135m Ci 0.00E+00 3.90E-06 2.54E-06 2.08E-05 2.72E-05 Xe-135 Ci 5.09E-04 7.91E-04 3.89E-02 2.82E-02 6.84E-02 Total for Period Ci 6.13E-04 1.03E-03 3.93E-02 2.84E-02 6.93E-02 D. Gross Alpha Total for Period Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Page 1-13

Attachment 1 Summary of Gaseous and Liquid Effluents Brunswick Steam Electric Plant Units 1 & 2 Period 1/1/2018 - 12/31/2018 Liquid Effluents - Batch Mode - Marsh Area Units Qtr 1 Qtr 2 Qtr 3 Qtr 4 Year A. Fission and Activation Products None Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Total for Period Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 B. Tritium H-3 Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 C. Dissolved & Entrained Gases None Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Total for Period Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 D. Gross Alpha Total for Period Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Page 1-14

Attachment 2 Supplemental Information Brunswick Steam Electric Plant Units 1 & 2 Period 1/1/2018 - 12/31/2018 ATTACHMENT 2 Supplemental Information This attachment includes supplemental information to the gaseous and liquid effluents report.

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Attachment 2 Supplemental Information Brunswick Steam Electric Plant Units 1 & 2 Period 1/1/2018 - 12/31/2018 I. Regulatory Limits - Per Unit A. Noble Gases - Air Dose

1. Calendar Quarter Gamma Dose =5 mRAD
2. Calendar Quarter Beta Dose = 10 mRAD
3. Calendar Year Gamma Dose = 10 mRAD
4. Calendar Year Beta Dose = 20 mRAD B. Liquid Effluents - Dose
1. Calendar Quarter Total Body Dose = 1.5 mREM
2. Calendar Quarter Organ Dose =5 mREM
3. Calendar Year Total Body Dose =3 mREM
4. Calendar Year Organ Dose = 10 mREM C. Gaseous Effluents - Iodine-131 & 133, Tritium, and Particulates with Half-lives > 8 days
1. Calendar Quarter Organ Dose = 7.5 mREM
2. Calendar Year Organ Dose = 15 mREM II. Maximum Permissible Effluent Concentrations A. Gaseous Effluents
1. Information found in Offsite Dose Calculation Manual B. Liquid Effluents
1. Information found in 10 CFR Part 20, Appendix B, Table 2, Column 2 III. Average Energy (not applicable)

IV. Measurements and Approximations of Total Radioactivity Analyses of specific radionuclides in selected or composited samples as described in the ODCM are used to determine the radionuclide composition of the effluent. A summary description of the method used for estimating overall errors associated with radioactivity measurements is provided as part of this attachment.

V. Batch Releases A. Liquid Effluents Jan - Jun Jul - Dec

1. Total Number of Batch Releases = 90 102
2. Total Time (min) for Batch Releases = 2.57E+05 4.33E+05
3. Maximum Time (min) for a Batch Release = 5.17E+04 6.88E+04
4. Average Time (min) for Batch Releases = 2.85E+03 4.25E+03
5. Minimum Time (min) for a Batch Release = 1.40E+01 1.10E+01
6. Average Dilution Water Flow During = 7.52E+05 7.62E+05 Release (gpm)

B. Gaseous Effluents Jan - Jun Jul - Dec

1. Total Number of Batch Releases = N/A N/A
2. Total Time (min) for Batch Releases = N/A N/A
3. Maximum Time (min) for a Batch Release = N/A N/A
4. Average Time (min) for Batch Releases = N/A N/A
5. Minimum Time (min) for a Batch Release = N/A N/A VI. Abnormal Releases See Attachment 5, Unplanned Offsite Releases.

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Attachment 2 Supplemental Information Brunswick Steam Electric Plant Units 1 & 2 Period 1/1/2018 - 12/31/2018 Carbon-14 In Regulatory Guide 1.21, Revision 2, Measuring, Evaluating, and Reporting Radioactive Material in Liquid and Gaseous Effluents and Solid Waste, the NRC recommends U.S. nuclear power plants evaluate whether C-14 is a "principal radionuclide" in gaseous effluents, and if so, report the amount of C-14 released. Improvements over the years in effluent management practices and fuel performance have resulted in a decrease in gaseous radionuclide (non-C-14) concentrations, and a change in the distribution of gaseous radionuclides released to the environment. As a result, many sites show C-14 has become a "principal radionuclide" for the gaseous effluent pathway, as defined in Regulatory Guide 1.21, Rev. 2. Although committed to Regulatory Guide 1.21, Rev. 1, the Brunswick Steam Electric Plant 2018 ARERR contains estimates of C-14 radioactivity released in 2018, and estimates of public dose resulting from the C-14 effluent.

Because the dose contribution of C-14 from liquid radioactive waste is much less than that contributed by gaseous radioactive waste, evaluation of C-14 in liquid radioactive waste is not required (Ref. Reg. Guide 1.21, Rev. 2). The quantity of gaseous C-14 released to the environment can be estimated by use of a C-14 source term scaling factor based on power generation (Ref. Reg. Guide 1.21, Rev. 2). The Brunswick Steam Electric Plant Updated Final Safety Analysis Report (UFSAR) states the C-14 release rate from a BWR is approximately 9.5 Ci/yr per unit assuming 80%

plant capacity factor, or 292 Effective Full Power Days (EFPD). Since Brunswick Steam Electric Plant has two reactors, the total release rate would be 19.0 Ci/yr. Using actual EFPD for Unit 1 and Unit 2, the total C-14 release rate was 2.08E+01 Ci/yr.

Public dose estimates from airborne C-14 are performed using dose models in Regulatory Guide 1.109. The dose models and assumptions used are documented in the Brunswick Steam Electric Plant ODCM 3.3.3, Carbon-14. The estimated C-14 dose impact on the maximum organ dose from airborne effluents released from Brunswick Steam Electric Plant in 2018 is well below the 10CFR50, Appendix I, ALARA design objective (i.e., 15 mrem/yr per unit).

Based on the 2018 Land Use Census, the critical receptor is located in the south sector at 1.0 miles with a garden.

There are no meat or milk pathways within 5 miles. Regulatory Guide 1.109 methodology was used to determine the dose to this critical receptor. The bone dose for 2018 was 4.07E+00 mrem and the total body dose was 8.14E-01 mrem.

Units Year

1. C-14 Activity Released Ci 2.08E+01
2. C-14 Total Body Dose mREM 8.14E-01
3. C-14 Organ Dose mREM 4.07E+00 Receptor Location 1.0 miles S Critical Age CHILD Critical Organ BONE Page 2-3

Attachment 2 Supplemental Information Brunswick Steam Electric Plant Units 1 & 2 Period 1/1/2018 - 12/31/2018 Discussion of liquid release from the BSEP Sewage Treatment Plant In accordance with the Brunswick Steam Electric Plant (BSEP) National Pollutant Discharge Elimination System (NPDES) Permit Number NC0007064 the decant from the BSEP Sewage Treatment Plant is released to Outfall Number 004. Outfall Number 004 discharges to the discharge canal which is a designated release point. The BSEP sewage decant is monitored continuously with a composite sampler for gamma and tritium analysis. On December 11, 2013 the monthly effluent sample contained tritium, there was no detectable gamma activity. Condition Report (CR) 651320 was generated and daily sampling was initiated for effluent accountability. Inputs to the system were sampled and it was discovered that tritiated groundwater is leaking into the Number 6 lift station. The source of tritium is from pre-existing groundwater contamination in the general area surrounding the Number 6 lift station. Regulatory Affairs confirmed this was not reportable per NEI 07-07 groundwater reporting. Approximately 1.46E+06 gallons containing 2.39E-02 curies of tritium was released in 2018 to the discharge canal.

Discussion of liquid releases from the Storm Drain Collector Basin (SDCB)

During periods of heavy rain, the contents of the SDCB may be released to the discharge canal in accordance with regulatory requirements to protect plant personnel and equipment. The SDCB was released directly to the discharge canal on 30 occasions in 2018 due to heavy rains. Approximately 1.01E+07 gallons containing 3.49 E-01 curies of tritium were released. There was no detectable gamma radioactivity.

Discussion of liquid releases from the Storm Drain Stabilization Facility (SDSF)

The SDSF collects rainwater, water from miscellaneous low volume drains on plant site, water from the Groundwater Extraction System, and water from the Unit 1 CST Remediation Facility. Treatment consists of filtration and evaporation. When sufficient water has accumulated in the pond it is released into the intake canal where it is drawn into the plant circulating and service water system and eventually released into the discharge canal. There were 10 SDSF releases in 2018. Approximately 1.10 E+08 gallons containing 3.71 E+00 curies of tritium were released from the SDSF. There was no detectable gamma radioactivity.

Discussion of water evaporation from the Storm Drain Stabilization Pond (SDSP)

It was calculated that 7.94E+06 cubic feet of tritiated water vapor was released via evaporation from the SDSP in 2018. This yields 7.33E-01 curies of tritium released to the atmosphere as a ground release. The nearest resident to the pond is in the northwest sector at approximately 0.3 miles. The maximum exposed individuals at that location received a calculated dose of 2.24E-04 mrem via the inhalation pathway in 2018. Only inhalation dose was determined because the exposed individuals do not have a garden and also do not have any milk or meat animals at this location.

Discussion of water evaporation from the Storm Drain Stabilization Facility (SDSF)

It was calculated that 6.34E+05 cubic feet of tritiated water vapor was released via evaporation from the SDSF in 2018. This yields 1.62E-01 curies of tritium released to the atmosphere as a ground release. The nearest resident to the pond is in the north northwest sector at approximately 0.5 miles. The maximum exposed individuals at that location received a calculated dose of 1.04E-04 mrem via the inhalation pathway in 2018. Only inhalation dose was determined because the exposed individuals do not have a garden and also do not have any milk or meat animals at this location.

Page 2-4

Attachment 2 Supplemental Information Brunswick Steam Electric Plant Units 1 & 2 Period 1/1/2018 - 12/31/2018 Discussion of liquid releases from the Marsh to Nancys Creek Samples are routinely analyzed from the marsh areas that drain into Nancys Creek during falling tides. The marsh areas are all on company owned property. The marsh land is under the influence of high and low tides and releases to Nancys Creek, which is offsite. This constitutes a release point for evaluation. The sampling program consists of monthly sampling and analysis at eight locations. All gamma analyses performed in 2018 were less than the Lower Limit of Detection (LLD). Some tritium analyses were greater than the LLD. The average tritium concentration each month, two high tides per day, the area of the marsh at high tide, the days in the month, and a conservative factor of 2 were used to calculate the amount of tritium released each month. In 2018, it was calculated that 5.38E+07 gallons were released to Nancys Creek containing 6.17E-02 curies of tritium. This yielded a Total Body dose of 7.50E-04 mrem to an adult from eating fish and invertebrate (shrimp, crabs, etc.).

Discussion of liquid releases from the Storm Drain Stabilization Pond (SDSP)

The SDSP collects rainwater as its only input source. Treatment from this location consists of sedimentation, evaporation, and transpiration. When sufficient water has accumulated in the pond, it is released into the intake canal where it is drawn into the circulating and service water system and eventually released into the discharge canal.

There were 5 SDSP releases in 2018. Approximately 7.41E+07 gallons were released in 2018 containing 0.00E+00 curies of tritium. There was no detectable gamma radioactivity.

Page 2-5

Attachment 2 Supplemental Information Brunswick Steam Electric Plant Units 1 & 2 Period 1/1/2018 - 12/31/2018 Overall Estimate of Error for Effluent Radioactivity Release Reported The estimated percentage of overall error for Gaseous effluent release data at Brunswick Steam Electric Plant is listed below. These values were derived by taking the square root of the sum of the squares of the discrete individual estimates of error.

1. Fission and Activation Gases = +/- 25%
2. Particulates and Iodine = +/- 25%
3. Tritium = +/- 15%

The estimated percentage of overall error for Liquid effluent release data at Brunswick Steam Electric Plant is listed below. These values were derived by taking the square root of the sum of the squares of the discrete individual estimates of error.

1. Fission and Activation Products and = +/- 17%

Dissolved and Entrained Noble Gases

2. Tritium = +/- 23%
3. Gross Alpha = +/- 32%

Overall Estimate of Error for Solid Waste Radioactivity Reported The estimated percentage of overall error for Solid Waste data at Brunswick Steam Electric Plant has been determined to be +/- 10%.

Page 2-6

Attachment 2 Supplemental Information Brunswick Steam Electric Plant Units 1 & 2 Period 1/1/2018 - 12/31/2018 Summary of Changes in Land Use Census Affecting Effluent Dose Calculations The 2018 Land Use Census was performed June 11 & 12, 2018. The results were certified and made available for use on June 16, 2018. The following are changes to residences, gardens, and milk animals from the previous year.

Residences No changes to nearest residence in each sector.

Gardens The garden in the N sector during 2017 was not present and was replaced by a garden at 1.1 miles in 2018.

The garden in the SSW sector at 1.7 miles was replaced by a garden at 1.9 miles.

The garden in the WSW sector at 1.3 miles was replaced by a garden 1.2 mile.

The garden in the NNW sector at 0.8 miles was replaced by a garden 0.9 mile.

Milk Animals No milk animal was present within 5 miles in each sector.

Environmental Monitoring Locations No changes to environmental monitoring locations in each sector.

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Attachment 3 Solid Radioactive Waste Disposal Brunswick Steam Electric Plant Units 1 & 2 Period 1/1/2018 - 12/31/2018 ATTACHMENT 3 Solid Radioactive Waste Disposal This attachment includes a summary of the solid waste shipped off-site for burial and/or disposal, including:

Container volume Total Curie content Principal Radionuclides Source/Type of waste Solidification agent or absorbent Type of shipping container Number of shipments Other relevant information as necessary Page 3-1

Attachment 3 Solid Radioactive Waste Disposal Brunswick Steam Electric Plant Units 1 & 2 Period 1/1/2018 - 12/31/2018 Burial Total Type of Number of Number of Waste Container Solidification Volume Activity Waste Shipped Shipments Containers Class Type Agent (m3) (Curies)

1. Waste from Liquid Systems
a. Spent Resins, Filters, Type A 13 22 A N/A 51.0 9.69E+02 Sludges (dewatered) GDP
b. Spent Resins, Filters, 1 1 B Type B N/A 2.32 1.63E+01 Sludges (dewatered)
c. Solidified (cement) Acids, Oily None - - - - - -

Water

2. Dry Solid Waste
a. Dry Active Waste (compacted Type A 22 37 A N/A 998 5.66E+00

& non-compacted) GDP

b. Irradiated Components 3 3 C Type B N/A 4.74 3.16E+04
c. Other Waste (oil/sludge) None - - - - - -
3. Total Solid Waste 39 63 - - - 1.06E+03 3.26E+04 NOTE: Total Activity determined by estimate. Solid Waste listed above shipped for processing to various waste processing services or directly shipped to licensed disposal facility.

Page 3-2

Attachment 3 Solid Radioactive Waste Disposal Brunswick Steam Electric Plant Units 1 & 2 Period 1/1/2018 - 12/31/2018 Type of Waste Shipped Radionuclide % Abundance

1. Waste from Liquid Systems
a. Spent Resins, Filters, Sludges Fe-55 1.96E+01%

(dewatered) Mn-54 3.54E+00%

Co-60 5.23E+01%

Ni-63 1.63E+01%

Class A & B combined Zn-65 2.34E+00%

Cs-137 3.68E+00%

b. Solidified (cement) Acids, Oily Water N/A N/A
2. Dry Solid Waste
a. Dry Active Waste (compacted & non- Cr-51 1.05E+00%

compacted) Fe-55 3.39E+01%

Mn-54 4.03E+00%

Co-60 5.35E+01%

Ni-63 3.55E+00%

Zn-65 1.14E+00%

b. Irradiated Components Fe-55 6.70E+01%

Co-60 2.22E+01%

Ni-63 4.41E+00%

Mn-54 2.71E+00%

Ta-182 3.51E+00%

c. Other Waste (oil/sludge) N/A N/A Page 3-3

Attachment 4 Meteorological Data Brunswick Steam Electric Plant Units 1 & 2 Period 1/1/2018 - 12/31/2018 ATTACHMENT 4 Meteorological Data This attachment includes a summary of meteorological joint frequency distributions of wind speed, wind direction, and atmospheric stability (hours of occurrence).

Page 4-1

Attachment 4 Meteorological Data Brunswick Steam Electric Plant Units 1 & 2 Period 1/1/2018 - 12/31/2018 Ground Releases Wind Hours of Occurrence Stability Speed Sector Class (mph) N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW 0.76-3.50 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3.51-7.50 10 3 5 7 14 14 16 9 9 3 12 10 4 2 1 9 7.51-12.50 9 2 2 10 13 15 6 3 4 11 80 29 1 1 0 6 A

12.51-18.50 0 0 0 0 0 1 1 0 0 2 16 7 0 0 0 0 18.51-25.00 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 25+ 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.76-3.50 2 0 3 0 0 1 0 0 1 1 1 1 2 5 4 0 3.51-7.50 15 9 7 20 16 12 20 11 7 8 17 19 5 5 9 9 7.51-12.50 8 9 9 21 22 7 10 5 8 29 78 40 0 3 5 7 B

12.51-18.50 2 1 3 3 2 0 0 0 1 9 30 10 0 0 1 2 18.51-25.00 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 25+ 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.76-3.50 4 2 3 5 1 1 4 0 1 4 4 4 5 7 5 7 3.51-7.50 12 8 13 21 18 22 14 22 14 17 39 23 8 11 10 12 7.51-12.50 8 21 13 29 19 9 4 4 7 30 82 36 0 0 9 8 C

12.51-18.50 0 1 1 0 2 0 0 0 1 4 26 5 0 0 0 1 18.51-25.00 0 0 0 0 0 0 0 0 0 0 2 0 0 0 0 0 25+ 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.76-3.50 26 24 26 21 11 13 17 11 10 11 26 30 23 37 24 17 3.51-7.50 106 145 141 88 65 48 41 70 96 97 279 231 51 33 60 61 7.51-12.50 53 84 47 57 34 17 16 25 33 103 304 158 5 11 25 58 D

12.51-18.50 7 3 4 4 0 1 4 9 6 20 63 30 2 0 3 5 18.51-25.00 1 0 0 0 0 0 1 0 1 0 4 2 0 0 0 0 25+ 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Page 4-2

Attachment 4 Meteorological Data Brunswick Steam Electric Plant Units 1 & 2 Period 1/1/2018 - 12/31/2018 Ground Releases Wind Hours of Occurrence Stability Speed Sector Class (mph) N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW 0.76-3.50 95 83 56 52 46 44 41 40 54 33 60 96 91 73 54 55 3.51-7.50 75 75 40 50 35 40 27 36 77 58 149 118 18 20 32 35 7.51-12.50 1 4 1 3 5 5 4 16 25 59 71 37 1 2 3 4 E

12.51-18.50 0 0 0 0 0 0 4 4 9 10 11 5 0 2 2 4 18.51-25.00 1 0 0 0 0 0 2 1 4 0 0 0 0 1 4 1 25+ 0 0 0 0 0 0 0 0 5 3 0 0 0 1 2 0 0.76-3.50 147 71 32 19 16 10 14 10 4 9 23 37 44 40 43 84 3.51-7.50 8 7 4 9 7 4 3 3 12 5 10 15 2 1 2 4 7.51-12.50 0 0 0 0 0 0 0 1 2 1 0 1 0 0 0 0 F

12.51-18.50 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 18.51-25.00 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 25+ 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.76-3.50 100 24 12 8 6 7 2 4 4 4 9 25 32 36 92 167 3.51-7.50 4 0 1 0 0 0 0 0 1 0 0 1 1 0 0 0 7.51-12.50 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 G

12.51-18.50 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 18.51-25.00 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 25+ 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Page 4-3

Attachment 4 Meteorological Data Brunswick Steam Electric Plant Units 1 & 2 Period 1/1/2018 - 12/31/2018 Elevated Releases Wind Hours of Occurrence Stability Speed Sector Class (mph) N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW 0.76-3.50 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3.51-7.50 1 1 0 1 1 0 2 0 1 1 0 1 0 0 0 0 7.51-12.50 3 1 3 11 30 13 15 11 5 7 29 8 3 3 3 6 A

12.51-18.50 10 2 4 13 9 3 1 0 1 23 74 7 0 4 7 2 18.51-25.00 1 0 1 1 0 1 0 0 2 6 10 2 0 0 1 0 25+ 0 0 0 0 0 0 0 0 0 0 2 0 0 0 0 1 0.76-3.50 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3.51-7.50 1 1 0 1 3 4 6 5 2 0 4 2 3 5 2 4 7.51-12.50 7 4 12 20 18 10 20 10 9 13 31 22 5 6 4 5 B

12.51-18.50 12 8 13 21 10 3 4 1 6 35 67 15 1 6 8 6 18.51-25.00 5 3 5 5 3 0 1 0 2 19 20 3 0 2 2 2 25+ 2 0 0 1 0 0 0 0 1 0 2 2 0 0 1 1 0.76-3.50 0 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0 3.51-7.50 7 4 3 9 7 9 8 5 3 4 12 11 6 2 2 5 7.51-12.50 7 6 7 22 13 12 13 15 14 31 38 27 6 10 6 6 C

12.51-18.50 14 11 21 24 13 2 3 1 10 32 51 21 2 6 14 8 18.51-25.00 1 5 4 6 1 2 4 1 1 13 19 6 0 1 2 7 25+ 0 0 1 0 0 0 0 0 1 0 5 0 0 0 1 1 0.76-3.50 5 3 2 3 1 3 0 1 1 0 1 2 1 0 1 0 3.51-7.50 13 20 16 19 9 20 12 22 20 16 16 26 24 12 12 10 7.51-12.50 36 61 55 48 46 29 13 37 40 102 98 128 27 27 27 27 D

12.51-18.50 97 126 103 75 34 13 12 29 58 199 283 154 20 38 30 33 18.51-25.00 39 37 53 39 10 14 23 17 21 59 129 47 4 26 40 36 25+ 7 1 11 7 1 14 16 6 11 14 36 18 1 1 13 10 Page 4-4

Attachment 4 Meteorological Data Brunswick Steam Electric Plant Units 1 & 2 Period 1/1/2018 - 12/31/2018 Elevated Releases Wind Hours of Occurrence Stability Speed Sector Class (mph) N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW 0.76-3.50 0 1 2 1 1 1 2 0 1 1 1 1 1 0 2 1 3.51-7.50 9 9 12 6 9 6 7 10 18 20 9 27 16 4 7 6 7.51-12.50 10 32 36 36 50 57 33 30 47 62 71 110 68 26 16 11 E

12.51-18.50 50 105 65 62 36 30 15 15 48 56 107 82 25 41 32 19 18.51-25.00 9 9 7 10 7 19 14 20 37 60 63 41 0 27 32 21 25+ 0 0 0 1 2 8 9 17 28 39 30 8 0 6 9 4 0.76-3.50 1 2 1 0 0 1 2 1 1 0 2 1 4 1 1 1 3.51-7.50 9 5 12 10 4 17 7 21 6 18 21 15 10 9 9 4 7.51-12.50 9 13 18 17 23 22 9 9 12 9 14 17 30 13 7 11 F

12.51-18.50 11 37 22 14 23 7 1 4 10 18 8 29 9 14 12 11 18.51-25.00 6 8 7 6 2 8 2 1 8 3 4 7 0 13 8 5 25+ 0 0 0 0 0 3 4 2 3 0 0 0 0 0 0 0 0.76-3.50 3 1 3 1 0 1 2 0 1 2 0 0 3 2 0 0 3.51-7.50 4 4 4 8 12 10 10 11 9 13 7 16 16 9 3 15 7.51-12.50 18 10 8 15 29 14 5 7 7 8 9 22 14 7 12 11 G

12.51-18.50 11 25 25 25 9 1 5 5 2 10 13 9 3 5 12 17 18.51-25.00 8 8 14 1 0 0 0 0 2 0 0 0 0 12 7 4 25+ 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 Page 4-5

Attachment 5 Unplanned Offsite Releases Brunswick Steam Electric Plant Units 1 & 2 Period 1/1/2018 - 12/31/2018 ATTACHMENT 5 Unplanned Offsite Releases This attachment includes a summary of the unplanned offsite releases of gaseous and liquid radioactive effluents.

Page 5-1

Attachment 5 Unplanned Offsite Releases Brunswick Steam Electric Plant Units 1 & 2 Period 1/1/2018 - 12/31/2018 Brunswick Steam Electric Plant did not experience any unplanned offsite gaseous or liquid effluent releases in 2018.

Page 5-2

Attachment 6 Assessment of Radiation Dose from Radioactive Effluents to Members of the Public Brunswick Steam Electric Plant Units 1 & 2 Period 1/1/2018 - 12/31/2018 ATTACHMENT 6 Assessment of Radiation Dose from Radioactive Effluents to Members of the Public (includes fuel cycle dose calculation results)

This attachment includes an assessment of radiation doses to the maximum exposed member of the public due to radioactive liquid and gaseous effluents released from the site for each calendar quarter for the calendar year of the report as well as the total dose for the calendar year.

This attachment also includes an assessment of radiation doses to the maximum exposed member of the public from all uranium fuel cycle sources within 8 km of the site for the calendar year of this report to show conformance with 40 CFR Part 190.

Methods for calculating the dose contribution from liquid and gaseous effluents are given in the Offsite Dose Calculation Manual (ODCM).

Page 6-1

Attachment 6 Assessment of Radiation Dose from Radioactive Effluents to Members of the Public Brunswick Steam Electric Plant Units 1 & 2 Period 1/1/2018 - 12/31/2018 Gaseous Effluents Dose Summary Units Qtr 1 Qtr 2 Qtr 3 Qtr 4 Year A. Noble Gases

1. Maximum Beta Air mRAD 3.25E-03 1.00E-03 1.07E-03 1.42E-03 6.75E-03 (a) Limit mRAD 2.00E+01 2.00E+01 2.00E+01 2.00E+01 4.00E+01 (b) % of Limit 1.63E-02 5.00E-03 5.33E-03 7.12E-03 1.69E-02
2. Maximum Gamma Air mRAD 2.63E-03 1.33E-03 2.43E-03 5.96E-03 1.24E-02 (a) Limit mRAD 1.00E+01 1.00E+01 1.00E+01 1.00E+01 2.00E+01 (b) % of Limit 2.63E-02 1.33E-02 2.43E-02 5.96E-02 6.18E-02 Receptor Location 0.7 miles ENE B. Iodine, H-3, & Particulates
1. Maximum Organ Dose mREM 3.62E-02 1.68E-02 2.22E-02 2.58E-02 1.01E-01 (a) Limit mREM 1.50E+01 1.50E+01 1.50E+01 1.50E+01 3.00E+01 (b) % of Limit 2.42E-01 1.12E-01 1.48E-01 1.72E-01 3.37E-01 Receptor Location 4.75 miles NE Critical Age INFANT Critical Organ THYROID Page 6-2

Attachment 6 Assessment of Radiation Dose from Radioactive Effluents to Members of the Public Brunswick Steam Electric Plant Units 1 & 2 Period 1/1/2018 - 12/31/2018 Liquid Effluents Dose Summary Units Qtr 1 Qtr 2 Qtr 3 Qtr 4 Year A. Batch & Continuous Mode

1. Maximum Organ Dose mREM 4.90E-05 6.22E-05 6.44E-05 3.56E-04 5.32E-04 (a) Limit mREM 1.00E+01 1.00E+01 1.00E+01 1.00E+01 2.00E+01 (b) % of Limit 4.90E-04 6.22E-04 6.44E-04 3.56E-03 2.66E-03
2. Maximum Total Body Dose mREM 1.38E-05 2.37E-05 1.58E-05 6.70E-05 1.20E-04 (a) Limit mREM 3.00E+00 3.00E+00 3.00E+00 3.00E+00 6.00E+00 (b) % of Limit 4.59E-04 7.91E-04 5.26E-04 2.23E-03 2.00E-03 Critical Age ADULT Critical Organ THYROID Page 6-3

Attachment 6 Assessment of Radiation Dose from Radioactive Effluents to Members of the Public Brunswick Steam Electric Plant Units 1 & 2 Period 1/1/2018 - 12/31/2018 40 CFR Part 190 Uranium Fuel Cycle Dose Calculation Results In accordance with the requirements of 40 CFR Part 190, the annual dose commitment to any member of the general public shall be calculated to assure that doses are limited to 25 millirems to the total body or any organ with the exception of the thyroid which is limited to 75 millirems. The fuel cycle dose assessment for Brunswick Steam Electric Plant includes liquid and gaseous effluent dose contributions from Brunswick Steam Electric Plant and direct and air-scatter dose from the onsite ISFSI and Turbine Buildings. No other uranium fuel cycle facility contributes significantly to the maximum exposed individual. Also included is dose from Carbon-14, evaporation of tritium from both the SDSP and SDSF, and marsh releases containing tritium to Nancys Creek (Ref. Attachment 2, Supplemental Information, of this report for further information). The combined dose to a maximum exposed individual from effluent releases and direct and air-scatter dose is below 40 CFR Part 190 limits as shown by the following summary.

Note: The 40 CFR Part 190 effluent dose analysis to the maximum exposed individual from liquid and gas releases does not include the dose from noble gases (i.e., total body and skin) due to the low significance compared to other dose pathways.

40 CFR Part 190 Effluent Dose Summary A. Gaseous Effluent Dose D. SDSP Evaporation H-3 Dose

1. Location 4.75 mi. NE 1. Location 0.30 mi. NW
2. Critical Age INFANT 2. Critical Age TEEN
3. Critical Organ THYROID 3. Critical Organ N/A
4. Organ Dose (mREM) 1.01E-01 4. Organ Dose (mREM) 2.24E-04
5. Total Body Dose (mREM) 2.99E-03 5. Total Body Dose (mREM) 2.24E-04 B. Liquid Effluent Dose E. SDSF Evaporation H-3 Dose
1. Location 0.10 mi. SW 1. Location 0.50 mi. NNW
2. Critical Age ADULT 2. Critical Age TEEN
3. Critical Organ THYROID 3. Critical Organ N/A
4. Organ Dose (mREM) 5.32E-04 4. Organ Dose (mREM) 1.04E-04
5. Total Body Dose (mREM) 1.20E-04 5. Total Body Dose (mREM) 1.04E-04 C. Carbon-14 Dose F. Nancys Creek Marsh H-3 Dose
1. Location 1.00 mi. S 1. Location Nancy's Creek
2. Critical Age CHILD 2. Critical Age ADULT
3. Critical Organ BONE 3. Critical Organ N/A
4. Organ Dose (mREM) 4.07E+00 4. Organ Dose (mREM) 7.50E-04
5. Total Body Dose (mREM) 8.14E-01 5. Total Body Dose (mREM) 7.50E-04 Page 6-4

Attachment 6 Assessment of Radiation Dose from Radioactive Effluents to Members of the Public Brunswick Steam Electric Plant Units 1 & 2 Period 1/1/2018 - 12/31/2018 Direct and air-scatter radiation dose contributions from the onsite ISFSI and Turbine Buildings are shown in plant operating manual 0PLP-36, 10 CFR 72.212 Report, revision 6. The maximum dose rate to the nearest real individual from the ISFSI and Turbine Buildings is conservatively calculated to be less than 14.8 mrem/yr. The below excerpt from plant operating manual 0PLP-36, 10 CFR 72.212 Report, revision 4, Attachment 1, is provided to document the method used to calculate the dose from the onsite ISFSI and Turbine Buildings as less than 14.8 mrem/yr to the nearest real individual.

5.2.2 Dose from Normal Operations and Anticipated Occurrences

5. The real dose contribution from direct radiation sources during plant operations at BSEP it taken at 14.8 mrem/year.

Dose contributions from Carbon-14 in gaseous effluents have been determined from ODCM 3.3.3, Carbon-14. The maximum dose rate to the nearest real individual from the release of Carbon-14 in gaseous effluents is conservatively calculated to be less than 4.07E+00 mrem/yr based on 2.08E+01 Curies released in 2018 (Ref. Attachment 2, Supplemental Information, of this report).

Dose contributions from evaporation of the Storm Drain Stabilization Pond (SDSP) have been determined from ODCM 3.3.2, I-131, I-133, Particulates, and Tritium, equation 3.2-19. The maximum dose rate to the nearest real individual from evaporation of tritium in the SDSP is conservatively calculated to be less than 2.24E-04 mrem/yr based on 7.33E-01 Curies released in 2018 (Ref. Attachment 2, Supplemental Information, of this report).

Dose contributions from evaporation of the Storm Drain Stabilization Facility (SDSF) have been determined from ODCM 3.3.2, I-131, I-133, Particulates, and Tritium, equation 3.2-19. The maximum dose rate to the nearest real individual from evaporation of tritium in the SDSF is conservatively calculated to be less than 1.04E-04 mrem/yr based on 1.62E-01 Curies released in 2018 (Ref. Attachment 2, Supplemental Information, of this report).

Dose contributions from marsh releases to Nancys Creek from ODCM 2.1.5, Marsh Releases. The maximum dose rate to the nearest real individual from marsh releases to Nancys Creek is conservatively calculated to be less than 7.50E-04 mrem/yr based on 6.17E-02 Curies released in 2018 (Ref. Attachment 2, Supplemental Information, of this report).

Total dose from liquid and gaseous effluents from Brunswick Steam Electric Plant and the additional pathways mentioned above is conservatively estimated to be less than 20 mrem/yr for total body and organ. It is recognized summing dose for different organs and age groups is not entirely accurate. However, the sum of the organ and age specific doses will always be less than the sum of the maximums of each. Therefore, summing the maximum values of each provides the most conservative value to ensure compliance with 40 CFR 190. The dose from all pathways related to operation of Brunswick Steam Electric Plant meets the 40 CFR Part 190 requirements of an annual dose commitment to any member of the general public of less than 25 mrem total body or any organ and 75 mrem to the thyroid.

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Attachment 7 Information to Support the NEI Ground Water Protection Initiative Brunswick Steam Electric Plant Units 1 & 2 Period 1/1/2018 - 12/31/2018 ATTACHMENT 7 Information to Support the NEI Ground Water Protection Initiative This attachment includes a summary of voluntary reports made in accordance with the NEI Ground Water Protection Initiative and a summary of ground water well sample data.

Page 7-1

Attachment 7 Information to Support the NEI Ground Water Protection Initiative Brunswick Steam Electric Plant Units 1 & 2 Period 1/1/2018 - 12/31/2018 The Brunswick Steam Electric Plant groundwater sampling and analysis program is a significant surveillance program.

Wells are installed around the Storm Drain Stabilization Pond (SDSP), in the Protected Area (PA), and throughout the Owner Controlled Area (OCA). The wells listed in the ODCM are collected as part of the Radiological Environmental Monitoring Program (REMP) and reported in the Annual Radiological Environmental Operating Report (AREOR). The monitoring wells not described in the ODCM are listed below. The list consists of shallow and intermediate wells in different locations around the OCA and PA. They are used to evaluate groundwater movement and for remediation of the Unit 1 Condensate Storage Tank (CST) leak and the SDSP.

Unit 1 CST Groundwater Wells - The investigation into groundwater impacts resulting from the December 2010 Unit 1 Condensate Storage Tank line leak resulted in the installation of numerous monitoring/recovery wells. Two of these wells (U1CSTREM-07BCH and U1CSTREM-09BCH) are installed in the Castle Hayne aquifer (greater than 70' below ground surface) to investigate and monitor potential impacts to the aquifer. Ten of these wells (U1CSTREM-05, U1CSTREM-02B, U1CSTREM-08/GWM-17, U1CSTREM-09B, U1CSTREM-15/GWM-15, U1CSTREM-21B, U1CSTREM-22B, U1CSTREM-27B, MW-01B, and MWPA-111B/GWM-01) are installed in the dense sand unit (45' -

70' below ground surface) to investigate and monitor impacts to this flow zone comprised of native material beneath the plant excavation backfill. Three of these dense sand wells are currently being used as recovery wells as part of the groundwater remediation effort (GWM-01, GWM-15, GWM-17). Twenty-four of these wells (U1CSTREM-02C/GWM-01, U1CSTREM-09C, U1CSTREM-10/GWM-04, U1CSTREM-11, U1CSTREM-12, U1CSTREM-13/GWM-13, U1CSTREM-14/GWM-15, U1CSTREM-16/GWM-16, U1CSTREM-18/GWM-18, U1CSTREM-19/GWM-19, U1CSTREM-21C, U1CSTREM-22C/GWM-07, U1CSTREM-23/GWM-11, U1CSTREM-24/GWM-22, U1CSTREM-25/GWM-21, U1CSTREM-26/GWM-06, U1CSTREM-27C/GWM-05, U1CSTREM-28/GWM-03, U1CSTREM-29/GWM-02, U1CSTREM-30/GWM-08, U1CSTREM-31/GWM-09, U1CSTREM-32, U1CSTREM-33/GWM-10, and MWPA-112C/GWM-12) are installed in the plant excavation backfill (up to 45' below ground surface) to investigate and monitor impacts to this flow zone where the leak occurred. Fifteen of these wells are currently used as recovery wells as part of the groundwater remediation effort.

Wells are typically sampled quarterly or semi-annually. Ground water samples are regularly analyzed for tritium and all wells are analyzed for gamma emitters. No gamma emitters, other than naturally occurring radionuclides, were identified in well samples during 2018.

Results from sampling during 2018 are shown in the table below.

No events meeting the criteria for voluntary notification per NEI 07-07, Industry Ground Water Protection Initiative, occurred at Brunswick Steam Electric Plant in 2018.

Key to below table.

Not scheduled to be sampled, not sampled due to insufficient NS -

volume in well, or well inaccessible during outage.

Ci/l - picocuries per liter.

< LLD - less than lower limit of detection, typically 250 Ci/l.

the Environmental Protection Agency drinking water standard for 20,000 Ci/l -

tritium. This standard applies only to water used for drinking.

the 10 CFR Part 20, Appendix B, Table 2, Column 2, Effluent 1,000,000 Ci/l -

Concentration Limit for tritium.

Page 7-2

Attachment 7 Information to Support the NEI Ground Water Protection Initiative Brunswick Steam Electric Plant Units 1 & 2 Period 1/1/2018 - 12/31/2018 Brunswick Shallow Wells for Plant Site Number of Number of Average H-3 Minimum H-3 Maximum H-3 Depth of Positive H-3 Well Name Samples in Activity Activity Activity Well Samples in 2018 (pCi/L) (pCi/L) (pCi/L) (ft) 2018 ESS2C 5 5 5.39E+03 1.51E+03 7.72E+03 27 ESS3C 2 2 4.01E+02 3.37E+02 4.65E+02 14 ESS12C 1 1 3.96E+02 3.96E+02 3.96E+02 15 ESS13C 1 0 < LLD < LLD < LLD 25 ESS16 5 5 4.48E+03 1.22E+03 1.67E+04 27 ESS17C 4 4 6.45E+03 5.71E+03 7.34E+03 26 ESS18C 4 2 5.09E+02 4.14E+02 6.03E+02 20 ESS19C 2 2 8.57E+04 7.92E+04 9.21E+04 20 ESS20C 4 4 5.48E+03 4.04E+03 7.48E+03 20 ESS21C 1 1 1.93E+02 1.93E+02 1.93E+02 20 ESS22C 1 0 < LLD < LLD < LLD 20 ESS23C 2 2 3.77E+04 1.22E+04 6.31E+04 23 ESS24C 4 4 2.81E+03 2.65E+02 4.84E+03 18 ESS25C 1 0 < LLD < LLD < LLD 22 ESS26C 2 2 7.94E+03 7.92E+03 7.95E+03 15 ESS27C 2 2 7.78E+04 6.30E+04 9.25E+04 16 ESS28C 2 2 2.62E+02 2.23E+02 3.00E+02 23 ESS29C 2 0 < LLD < LLD < LLD 28 ESS30C 2 1 4.51E+02 4.51E+02 4.51E+02 15 ESS31C 2 0 < LLD < LLD < LLD 15 ESS38C 1 1 2.11E+02 2.11E+02 2.11E+02 15 ESS39C 1 1 2.08E+02 2.08E+02 2.08E+02 20 ESS40C 1 0 < LLD < LLD < LLD 30 ESS41C 1 0 < LLD < LLD < LLD 27 ESS42C 1 0 < LLD < LLD < LLD 30 ESS44C 1 0 < LLD < LLD < LLD 15 ESS45C 1 0 < LLD < LLD < LLD 21 ESS46C 1 0 < LLD < LLD < LLD 18 ESS48C 1 0 < LLD < LLD < LLD 18 ESS49C 1 0 < LLD < LLD < LLD 19 ESS50C 1 0 < LLD < LLD < LLD 22 ESS51C 1 0 < LLD < LLD < LLD 22 ESS54C 1 0 < LLD < LLD < LLD 24 ESS55C 1 0 < LLD < LLD < LLD 38 ESS56C 1 0 < LLD < LLD < LLD 32 ESS58C 1 0 < LLD < LLD < LLD 18 Page 7-3

Attachment 7 Information to Support the NEI Ground Water Protection Initiative Brunswick Steam Electric Plant Units 1 & 2 Period 1/1/2018 - 12/31/2018 Brunswick Shallow Wells for Plant Site - continued Number of Number of Average H-3 Minimum H-3 Maximum H-3 Depth of Positive H-3 Well Name Samples in Activity Activity Activity Well Samples in 2018 (pCi/L) (pCi/L) (pCi/L) (ft) 2018 ESS59C 1 0 < LLD < LLD < LLD 18 ESS60C 1 0 < LLD < LLD < LLD 19 ESS67C 2 0 < LLD < LLD < LLD 25 ESS68C 1 0 < LLD < LLD < LLD 19 ESS69C 1 0 < LLD < LLD < LLD 30 ESS70C 1 0 < LLD < LLD < LLD 18 ESS71C 1 0 < LLD < LLD < LLD 19 ESS72C 2 0 < LLD < LLD < LLD 18 ESS73C 1 0 < LLD < LLD < LLD 15 ESS74C 1 0 < LLD < LLD < LLD 25 ESS201C 4 4 8.63E+03 5.06E+03 1.25E+04 19 ESS202C 4 4 2.15E+04 4.84E+03 3.93E+04 19 ESS203C 4 4 1.69E+03 1.36E+03 1.88E+03 19 ESSSTAB 2 2 8.27E+02 7.54E+02 8.99E+02 31 ESSNC4A 2 2 1.08E+04 8.23E+03 1.34E+04 17 MW2 2 1 3.13E+02 3.13E+02 3.13E+02 24 MW3 2 2 3.54E+02 3.48E+02 3.60E+02 26 MWPA100C 2 2 3.17E+02 2.94E+02 3.40E+02 30 MWPA101C 2 2 5.12E+02 4.26E+02 5.97E+02 29 MWPA102C 2 2 3.17E+02 2.66E+02 3.68E+02 30 MWPA103C 2 0 < LLD < LLD < LLD 30 MWPA104C 4 4 2.47E+03 1.87E+03 3.00E+03 29 MWPA105C 2 2 7.93E+02 6.86E+02 8.99E+02 30 MWPA106C 2 2 4.41E+02 4.04E+02 4.77E+02 29 MWPA107C 4 4 1.78E+03 1.44E+03 2.30E+03 29 MWPA108C 4 4 5.81E+02 4.91E+02 7.05E+02 29 MWPA109C 2 2 1.53E+03 1.37E+03 1.68E+03 29 MWPA110C 4 4 1.09E+03 6.74E+02 2.08E+03 29 MWPA113C 2 2 1.79E+03 1.78E+03 1.79E+03 25 MWPA114C 4 4 2.94E+03 2.34E+03 3.44E+03 30 MWPA115C 4 4 3.31E+03 2.75E+03 3.95E+03 34 MWPA116C 2 1 2.30E+02 2.30E+02 2.30E+02 30 MWPA117C 2 2 6.94E+02 6.15E+02 7.73E+02 30 MWPA118C 2 2 6.62E+02 6.22E+02 7.02E+02 30 Page 7-4

Attachment 7 Information to Support the NEI Ground Water Protection Initiative Brunswick Steam Electric Plant Units 1 & 2 Period 1/1/2018 - 12/31/2018 Brunswick Intermediate Wells for Plant Site Number Number of Average H-3 Minimum H-3 Maximum H-3 Depth of of Positive H-3 Well Name Activity Activity Activity Well Samples Samples in (pCi/L) (pCi/L) (pCi/L) (ft) in 2018 2018 ESS2B 1 0 < LLD < LLD < LLD 58 ESS3B 1 0 < LLD < LLD < LLD 52 ESS18B 4 4 4.90E+02 4.09E+02 5.88E+02 63 ESS19B 4 4 1.92E+04 1.53E+03 3.90E+04 42 ESS20B 4 0 < LLD < LLD < LLD 43 ESS22B 4 4 3.18E+03 2.77E+03 3.40E+03 76 ESS38B 1 0 < LLD < LLD < LLD 55 ESS39B 1 0 < LLD < LLD < LLD 55 ESS51B 1 0 < LLD < LLD < LLD 45 ESS52B 1 0 < LLD < LLD < LLD 51 ESS53B 1 0 < LLD < LLD < LLD 76 MWPA104B 4 4 4.14E+03 3.78E+03 4.47E+03 59 MWPA107B 4 4 6.56E+03 4.72E+03 8.52E+03 60 Page 7-5

Attachment 7 Information to Support the NEI Ground Water Protection Initiative Brunswick Steam Electric Plant Units 1 & 2 Period 1/1/2018 - 12/31/2018 Brunswick Unit 1 CST Groundwater Wells Number of Number of Average H-3 Minimum H-3 Maximum H-3 Positive H-3 Depth of Well Well Name Samples in Activity Activity Activity Samples in (ft) 2018 (pCi/L) (pCi/L) (pCi/L) 2018 GWM-01 41 41 2889 1557 3547 61 GWM-02 41 41 17691 13977 21881 45 GMW-06 0 - - - - 45 GWM-08 43 43 2662 1082 4229 45 GWM-09 39 38 1044 <LLD 3288 46 GWM-10 32 32 4091 1386 12889 45 GWM-11 43 43 3449 1698 4914 45 GWM-12 43 43 4560 281 22895 33 GMW-13 43 42 25181 <LLD 39631 44 GWM-14 44 44 37650 717 85887 44 GMW-15 43 43 8087 1161 11740 59 GWM-16 42 42 96420 4418 141647 40 GMW-17 43 43 2674 297 7593 68 GWM-18 40 40 148773 5798 376615 29 GMW-19 43 42 14711 <LLD 25078 40 GMW-20 43 41 9714 LLD 28190 45 GMW-21 42 42 16662 10693 23859 45 GWM-22 43 43 13905 8538 19487 29 MW-1 11 9 553 <LLD 670 24 MW-1B 11 19 707 LLD 1143 45 U1CSTREM-02B 11 1 279 LLD 279 68 U1CSTREM-05B 11 1 385 LLD 385 65 U1CSTREM-07BCH 11 11 1329 790 1710 85 U1CSTREM-09B 11 11 2114 1161 3959 68 U1CSTREM-09BCH 11 11 4054 1419 6138 85 U1CSTREM-09C 11 11 5191 2307 8709 45 U1CSTREM-10C 11 8 390 LLD 606 45 U1CSTREM-11C 11 4 327 LLD 393 40 U1CSTREM-12C 10 4 321 LLD 296 34 U1CSTREM-21B 12 12 1668 825 3654 69 U1CSTREM-21C 12 12 4995 2133 9146 45 U1CSTREM-22B 11 0 <LLD LLD <LLD 69 U1CSTREM-27B 11 1 274 LLD 274 68 U1CSTREM-27C 11 10 589 262 886 45 U1CSTREM-28C 12 12 12593 585 31668 45 U1CSTREM-32C 11 11 1163 937 1513 45 Page 7-6

Attachment 8 Inoperable Equipment Brunswick Steam Electric Plant Units 1 & 2 Period 1/1/2018 - 12/31/2018 ATTACHMENT 8 Inoperable Equipment This attachment includes an explanation of inoperable instruments related to effluent monitoring in excess of allowed time defined by licensing bases and an explanation of liquid hold-up tanks exceeding 10 Curies total activity (excluding tritium and dissolved or entrained noble gases).

Page 8-1

Attachment 8 Inoperable Equipment Brunswick Steam Electric Plant Units 1 & 2 Period 1/1/2018 - 12/31/2018 Brunswick Steam Electric Plant experienced one (1) instance of inoperable equipment relevant to effluent monitoring in excess of ODCM Specification 7.3.0 limits during 2018.

ODCM # from Completion Title Description Table 7.3.2-1 Time Main Stack Flow Transmitter (2-VA-FIQ-5902) failed and replacement parts are obsolete.

Main Stack Monitoring On 10/19/18 maintenance 1 System - Effluent Flow 30 Days installed a repaired card to Rate Measurement Device restore the system back to service. EC 414165 is tracking replacement of Main Stack flow transmitter and probes.

Brunswick Steam Electric Plant experienced no Liquid Hold-Up Tank exceeding the 10 Curie limit of ODCMS 7.3.6 during 2018.

Page 8-2

Attachment 9 Summary of Changes to the Offsite Dose Calculation Manual Brunswick Steam Electric Plant Units 1 & 2 Period 1/1/2018 - 12/31/2018 ATTACHMENT 9 Summary of Changes to the Offsite Dose Calculation Manual This attachment includes a summary of changes to the ODCM and Radiological Effluent Controls.

Page 9-1

Attachment 9 Summary of Changes to the Offsite Dose Calculation Manual Brunswick Steam Electric Plant Units 1 & 2 Period 1/1/2018 - 12/31/2018 ODCM Revision 38 The Brunswick Steam Electric Plant ODCM was not revised in 2018. The most recent revision is 38.

Page 9-2

Attachment 10 Summary of Changes to the Process Control Program Brunswick Steam Electric Plant Units 1 & 2 Period 1/1/2018 - 12/31/2018 ATTACHMENT 10 Summary of Changes to the Process Control Program This attachment includes a summary of changes to the PCP.

Page 10-1

Attachment 10 Summary of Changes to the Process Control Program Brunswick Steam Electric Plant Units 1 & 2 Period 1/1/2018 - 12/31/2018 The Brunswick Steam Electric Plant PCP was not revised in 2018. The most recent revision is 5.

Page 10-2

Attachment 11 Summary of Major Modifications to the Radioactive Waste Treatment Systems Brunswick Steam Electric Plant Units 1 & 2 Period 1/1/2018 - 12/31/2018 ATTACHMENT 11 Summary of Major Modifications to the Radioactive Waste Treatment Systems This attachment includes a description of major modifications to the radioactive waste treatment systems that are anticipated to affect effluent releases.

Page 11-1

Attachment 11 Summary of Major Modifications to the Radioactive Waste Treatment Systems Brunswick Steam Electric Plant Units 1 & 2 Period 1/1/2018 - 12/31/2018 No major modifications to Brunswick Steam Electric Plant liquid, gaseous, solid, or mobile radioactive waste treatment systems occurred in 2018.

Page 11-2

Attachment 12 Errata to a Previous Year's ARERR Brunswick Steam Electric Plant Units 1 & 2 Period 1/1/2018 - 12/31/2018 ATTACHMENT 12 Errata to a Previous Year's ARERR This attachment includes any amended pages from a previous year's ARERR.

Page 12-1

Attachment 12 Errata to a Previous Year's ARERR Brunswick Steam Electric Plant Units 1 & 2 Period 1/1/2018 - 12/31/2018 The following contains amended pages to the Brunswick Steam Electric Plant 2017 ARERR. Amended pages are identified with Amendment # on page. Specific changes are identified with change bars in the right margin.

The Brunswick Steam Electric Plant 2017 ARERR Amendment #1 requires the following change from Attachment 3 Page 3-2:

Brunswick Steam Electric Plant 2017 ARERR as submitted:

3. Total Solid Waste 59 76 - - - 1.53E+03 2.58E+04 Brunswick Steam Electric Plant 2017 ARERR Amendment #1 as revised:
3. Total Solid Waste 59 76 - - - 1.57E+03 2.58E+04 Page 12-2

Attachment 12 Errata to a Previous Year's ARERR Brunswick Steam Electric Plant Units 1 & 2 Period 1/1/2018 - 12/31/2018 Attachment 3 Solid Radioactive Waste Disposal Brunswick Steam Electric Plant Units 1 & 2 Period 1/1/2017 - 12/31/2017 Burial Total Type of Number of Number of Waste Container Solidification Volume Activity Waste Shipped Shipments Containers Class Type Agent (m3) (Curies)

3. Waste from Liquid Systems
a. Spent Resins, Filters, Type A 13 13 A N/A 60.7 8.24E+01 Sludges (dewatered) GDP
b. Spent Resins, Filters, 2 2 B Type B N/A 4.53 2.67E+02 Sludges (dewatered
c. Solidified (cement) Acids, Oily None - - - - - -

Water

4. Dry Solid Waste
a. Dry Active Waste (compacted Type A 34 51 A N/A 1400 2.74E+00

& non-compacted) GDP

b. Irradiated Components 2 2 C Type B N/A 3.16 2.54E+04 Type A
c. Other Waste (oil/sludge) 8 8 A N/A 98.9 4.62E-01 GDP
5. Total Solid Waste 59 76 - - - 1.57E+03 2.58E+04 NOTE: Total Activity determined by estimate. Solid Waste listed above shipped for processing to various waste processing services or directly shipped to licensed disposal facility.

Page 3-2 Brunswick Steam Electric Plant 2017 ARERR Amendment #1 Page 12-3

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