ML22117A228
| ML22117A228 | |
| Person / Time | |
|---|---|
| Site: | Summer  |
| Issue date: | 04/27/2022 |
| From: | Haselden R Dominion Energy South Carolina |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| 22-136 | |
| Download: ML22117A228 (64) | |
Text
V.C. Summer Nuclear Station ~ Dominion Bradha m Blvd & Hwy 215, Jenkinsville, SC 29065 Mailing Address: ~ Energy P.O. Box 88, Jen kinsville, SC 29065 April 27, 2022 Dominion Energy.com
ATTN: Document Control Desk Serial No.22-136 U. S. Nuclear Regulatory Commission LIC/TS/R0 Washington, D. C. 20555-001 Docket No. 50-395 License No. NPF-12
DOMINION ENERGY SOUTH CAROLINA, INC. (DESC)
VIRGIL C. SUMMER NUCLEAR STATION UNIT 1 DOCKET NO. 50-395 OPERATING LICENSE NO. NPF-12 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT
Enclosed is the DESC Annual Radioactive Effluent Release Report as required by 10 CFR 50.36a, Section 6.9.1.8 of the Virgil C. Summer Nuclear Station Technical Specifications, and Section 1.6.2.1 of the Offsite Dose Calculation Manual. This submittal covers the period of January 1 through December 31, 2021.
If there are any questions, please call Ms. Tracey Stewart at (803) 931-5663.
Sincerely,
Robin R. Haselden Director, Nuclear Station Safety and Licensing V. C. Summer Nuclear Station
Commitments contained in this letter: None
Enclosure:
Annual Radioactive Effluent Release Report Enclosure A: Meteorological Data Joint Frequency Distribution Tables
cc: w/o Enclosures unless noted G. J. Lindamood - Santee Cooper L. Dudes - NRC Region II G. Miller - NRC Project Manager NRC Resident Inspector (w/Enclosures)
ANI (w/Enclosures)
Anu Nair - SCDHEC - Bureau of Environmental Health Services (w/Enclosures)
~ Dominion pr Energy
ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT VIRGIL C. SUMMER NUCLEAR STATION
FOR THE OPERA TING PERIOD JANUARY 1, 2021 - DECEMBER 31, 2021
Health Physic
--~~?,
~ othyRiley, §uperintendent Todd Ellison, Manager Health Physics Technical Services Radiation Protection and Chemistry ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT
JANUARY - DECEMBER 2021
VIRGIL C. SUMMER NUCLEAR STATION
Introduction
This report is being submitted as a summary of quantities of radioactive liquid and gaseous effluents and solid waste released from the Virgil C. Summer Nuclear Station. This report is submitted in fulfillment of the requirements in the V. C. Summer Nuclear Station Operating License Technical Specifications Section 6.9.1.8, Offsite Dose Calculation Manual (ODCM) Section1.6.2 and 1 0CFR50.36(a) and follows the reporting details specified in USN RC Regulatory Guide 1.21 <1>.
Summary information of radioactive gaseous and liquid effluents is presented along with a summary of radioactive waste disposal as well as an evaluation of the radiological impact on man due to operation of the Virgil C. Summer Nuclear Station. Supplemental information including release limits also required by USNRC Regulatory Guide 1.21 is provided as Appendix A.
A. Supplemental Information
Regulatory limits for doses, dose rate and effluent concentration limits presented in Supplemental Information are from the Virgil C. Summer Nuclear Station ODCM and 40 CFR 190. Average energy ( E ) is not applicable to the method for determining release rate limits for fission and activation gaseous effluents, therefore, it has been omitted. A compilation of required supplemental information is provided in Appendix A.
B. Gaseous Effluents
Gaseous effluents released from ground level are summarized in Tables 1 and 2. An elevated release pathway does not exist at Virgil C. Summer Nuclear Station. Cumulative doses are discussed in Section E.
The error for both liquid and gaseous release totals is estimated as twenty percent for radioactive radionuclides sampled and released in effluent pathways. Error was derived using root sum of squares methodology considering known sources of error including calibration of detectors and flow measurement equipment, sample preparation, and analysis counting error.
C. Liquid Effluents
Liquid effluents are summarized in Tables 3 and 4. Estimated total errors are expressed as in Section B above.
ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT
JANUARY - DECEMBER 2021
VIRGIL C. SUMMER NUCLEAR STATION
D. Solid Waste Shipments
Solid waste shipments are summarized in Table 5. Curie content of radioactive waste packages is determined by dose rates and/or gamma spectroscopy analysis of samples.
The total error for each type of curie content determination is conservatively estimated to be the sum of a 15% systematic error and a 20% photon response error for the detector used.
E. Radiological Impact on Man
Dose to the maximum exposed individual in the unrestricted area was calculated using measured plant gaseous effluents and meteorological data in accordance with the Offsite Dose Calculation Manual. The source term involved O Waste Gas Decay Tank (WGDT) releases, 3.41 days of 6-inch Reactor Building purge releases, 12.55 days of 36-inch Reactor Building purge releases and a continuous 12-month Main Plant vent release.
Doses are summarized in Table 6. The total gaseous activities released are presented in Tables 1 and 2. The highest quarterly air doses at the station boundary resulting from the release of noble gases were 4.07E-04 mrad for gamma during the fourth quarter and 2.35E-04 mrad for beta during the fourth quarter. The maximum quarterly organ dose attributed to the releases, excluding Carbon-14, was 5.57E-04 mrem. Cumulative annual dose was 4.97E-04 mrad, 2.68E-04 mrad and 7.43E-04 mrem for gamma, beta, and organ dose, respectively. Discussion of the impact of Carbon-14 is included in Section K.
Measured plant liquid effluent data was used to calculate estimates of doses to individuals in accordance with the Offsite Dose Calculation Manual. The source term consisted of the isotopic contents of 224 Waste Monitor Tank batch releases, 38 Condensate Backwash Receiver Tank batch releases, 3 NaOH Sump batch releases, 7.49 days of Steam Generator Slowdown release and a continuous Turbine Building Sump release.
Doses are summarized in Table 6 and total liquid radioactivity released is described in Tables 3 and 4. The highest quarterly total body dose to the maximum exposed individual resulting from the release of radioactive liquid was 3.06E-03 mrem during the second quarter. The highest organ dose was 3.06E-03 mrem to the Liver for the second quarter.
Cumulative annual doses for the hypothetical maximum exposed individual were 7.89E-03 mrem for the total body and 7.91 E-3 mrem for the GI-LLI, the maximum annual organ.
The GI-LLI was the maximum exposed organ for the first, third and fourth quarter and the Liver was the maximum exposed organ for the second quarter.
Dose rates and concentrations were below station limits as specified in Supplemental Information,Section II A, B, and C during all the effluent releases.
ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT
JANUARY - DECEMBER 2021
VIRGIL C. SUMMER NUCLEAR STATION
Radiation exposure total dose to members of the public is limited by 40CFR 190 and 10CFR72.104 to less than 25 mrem to the total body and all organs except the thyroid which is limited to 75 mrem. This dose limit applies to effluents as well as Independent Spent Fuel Storage Installation (ISFSI). Radiation exposure within the site boundary was assessed through calculation of gamma and beta air dose at 0.25 miles of the gaseous effluent release point and direct measurement of exposure using thermoluminescent dosimeters. Onsite air dose for this reporting period was 1.62E-03 mrad gamma and
- 8. 73E-04 mrad beta, well below levels that can be distinguished above background. Quarterly thermoluminescent dosimetry (TLD) data from four onsite monitoring locations within 0.2 miles of the Reactor Building and eight locations at the site boundary were analyzed. Results from 2021 do not show a significant increase in dose rates above 2020 levels or historic operational average.
Radiation doses from radioactive effluents to workers at the Fairfield Hydro Station for this reporting period were calculated to be 2.35E-05 and 1.27E-05 mrad for gamma and beta, respectively.
Radiation doses from radioactive effluents to workers at the New Nuclear Site for this reporting period were calculated to be 2.02E-04 and 1.09E-04 mrad for gamma and beta, respectively.
The impact of Independent Spent Fuel Storage Installation (ISFSI) operation, located within the VCSNS Protected Area, which began cask storage on March 26, 2016, was assessed using six TLD locations monitoring the perimeter of the ISFSI site. The TLD locations were monitored for three quarters prior to fuel storage and continued to be monitored through 2021 during which fuel storage casks were stored. Analysis of monitoring results show a statistically significant increase in ISFSI perimeter dose as a result of fuel storage. The highest location shows an increase of 7.3 mrem/calendar quarter compared to pre-operation. Although the applicable limit for a member of the public applies to a real individual, a conservative analysis was used to demonstrate compliance with 40CFR 190 and 10CFR72.104 by assuming an individual is located at the perimeter of the ISFSI Protected Area for 2000 hours0.0231 days <br />0.556 hours <br />0.00331 weeks <br />7.61e-4 months <br /> per year. In this case, the hypothetical individual would have received 6.6 mrem.
Based on review of gaseous effluent dose calculations, analysis of onsite TLD monitoring including ISFSI perimeter monitoring, it can be concluded that total dose to any member of the public does not exceed the dose limits of 40CFR190 and 10CFR72.104.
Radiation doses from nearby uranium fuel cycle sources were not assessed. The ODCM, Sections 1.3.1 and B/1.3 establish a five (5) mile limit beyond which doses from nearby plants are insignificant. There are no uranium fuel cycle plants within a five (5) mile radius of Virgil C. Summer Nuclear Station.
ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT
JANUARY - DECEMBER 2021
VIRGIL C. SUMMER NUCLEAR STATION
F. Abnormal Releases
None
G. Meteorology
The meteorological data for 2021 was collected and analyzed. An annual meteorological summary report of joint frequency distributions of wind direction and speed by atmospheric stability class for each quarter is included as Enclosure A.
The wind direction and wind speed data used were acquired from the 10-meter level of the primary monitoring tower. Stability was determined by the primary differential temperature (61 to 10 meter).
The combined annual data recovery for wind direction, wind speed and stability was
- 98. 70%. Primary variable recovery rates were as follows: wind direction (10 m) - 98.70%, wind speed (10 m) - 98.70%, and differential temperature (61 - 10 m) - 98.70%.
H. Offsite Dose Calculation Manual
The Virgil C. Summer Nuclear Station ODCM was not revised in 2021.
I. Offsite Dose Calculation Manual Reportable Incidents
The Turbine Building Sump Effluent Line Radiation Monitor RM-L8 required by ODCM Control 1.1.1.1 was out of service from February 2, 2021 at 1145 and presently remains out of service. The out of service condition was the result of spurious high rad alarms on the monitor. Significant troubleshooting efforts on the system was performed. The ratemeter, detector and pre-amp were replaced and tested, but the monitor would still spike. A replacement radiation monitor unit is currently in the procurement process. Compensatory actions are being implemented during this time period in accordance with the requirements of the ODCM.
The Condensate Backwash Receiver Tank Radiation Monitor RM-L 11 required by ODCM Control 1.1.1.1 was out of service from April 27, 2021 at 0915 to September 20, 2021 at 08:30. The out of service condition was the result of intermittent high rad alarms. The system was restored by replacing the old power supply with a newer style power supply. No effluent releases were made during the out of service period.
ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT
JANUARY - DECEMBER 2021
VIRGIL C. SUMMER NUCLEAR STATION
Steam Generator Slowdown Header Flow Transmitter IFI04705 was out of service from June 10, 2021 at 1244 to September 13, 2021 at 0824.The cam drive motor was replaced, and new fuses were installed to the integrator circuit. All indications were verified normal upon restoration. An alternate calibrated computer point was used to obtain flow data for Steam Generator effluent during this period.
J. Major Changes to Radioactive Waste Treatment Systems
During 2021, there were no major changes to the Radioactive Waste Treatment System.
K. Carbon-14 Gaseous Effluents
Carbon-14 production and release estimates were calculated using EPRI Report 1021106<2>, "Estimation of Carbon-14 in Nuclear Plant Gaseous Effluents". This calculation uses active core coolant mass, average neutron flux by energy and reactor coolant nitrogen concentrations to determine Carbon-14 generation based upon an effective full power year. The estimated generation for VC Summer Nuclear station for 2021 was 8.24 curies.
Public dose estimates were performed using Regulatory Guide 1.109 <3>
methodology. Carbon dioxide is assumed to make up 20% of the Carbon-14 gaseous emissions from the station based upon available references and on-site testing. Carbon-14 is the highest dose contributor of all radionuclides released in gaseous effluents. Annual dose resulting from Carbon-14 releases in gaseous effluents is estimated to be 1.46E-01 mrem total body and 7.32E-01 mrem to the maximum organ (bone).
L. Errata/Correction to Previous ARERR
Total lodine-131 reported in Table 1 for gaseous effluents in the annual report for 2020 included both lodine-131 and lodine-132 instead of only lodine-131. A corrected Table 1 is included as Enclosure B.
ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT
JANUARY - DECEMBER 2021
VIRGIL C. SUMMER NUCLEAR STATION
References
- 1. Regulatory Guide 1.21, "Measuring, Evaluating, and Reporting Radioactivity in Solid Wastes and Releases of Radioactive Materials in Liquid and Gaseous Effluents From Light Water Cooled Nuclear Power Plants", Revision 1,US Nuclear Regulatory Commission, Washington D.C., 1974.
Electric Power Research Institute, Palo Alto, CA, 2010.
- 3. Regulatory Guide 1.109, "Calculation of Annual Doses to Man from Routine Releases of
'Reactor effluents for the Purpose of Demonstrating compliance with 10 CFR50, Appendix I",
US Nuclear Regulatory Commission, Washington D.C., 1976.
APPENDIX A
ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT
JANUARY - DECEMBER 2021
VIRGIL C. SUMMER NUCLEAR STATION
SUPPLEMENTAL INFORMATION
I. Regulatory Dose Limits:
A Fission and Activation Gases:
The air dose to an individual due to noble gases released in gaseous effluents shall be limited to less than or equal to 5 mrad for gamma radiation and 10 mrad for beta radiation during any calendar quarter and 10 mrad for gamma radiation and 20 mrad for beta radiation during any calendar year (ODCM, Section 1.2.3.1 ).
B. Iodines, Particulates (half-lives > 8 days) and Tritium:
The dose to an individual from radioiodine, tritium and radioactive materials in particulate form with half-lives greater than 8 days in gaseous effluents shall be limited to less than or equal to 7.5 mrem to any organ during any calendar quarter and 15 mrem to any organ during any calendar year (ODCM, Section 1.2.4.1 ).
C. Liquid Effluents:
The dose or dose commitment to an individual from radioactive materials in liquid effluents released shall be limited to less than or equal to 1.5 mrem to the total body and 5 mrem to any organ during any calendar quarter and 3 mrem to the total body and 10 mrem to any organ during any calendar year (ODCM, Section 1.1.3.1 ).
D. All Sources:
The annual dose equivalent shall not exceed 25 mrem to the whole body, 75 mrem to the thyroid and 25 mrem to any other organ (40 CFR 190).
II. Dose Rate and Effluent Concentration Limits:
A. Fission and Activation Gases
The dose rate in unrestricted areas due to radioactive materials released in gaseous effluents shall be limited to less than or equal to 500 mrem/year to the total body and less than or equal to 3000 mrem/yearto the skin (ODCM, Section 1.2.2.1).
APPENDIX A
ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT
JANUARY - DECEMBER 2021
VIRGIL C. SUMMER NUCLEAR STATION
B. Iodines, Particulates (half-lives> 8 days) and Tritium:
The dose rate in unrestricted areas due to radioactive materials in effluents shall be limited to less than or equal to 1500 mrem/year to any organ (ODCM, Section 1.2.2.1 ).
C. Liquid Effluents:
The concentration of radioactive materials released from the site shall be limited to 10 times the concentrations specified in 10 CFR 20, Appendix B, Table 2, Column 2 for radionuclides other than dissolved or entrained noble gases. For dissolved or entrained noble gases, the concentration shall be limited to 2E-04 µCi/ml total activity (ODCM, Section 1.1.2.1).
Ill. Average Energy:
Not Applicable
IV. Measurements and Approximations of Total Radioactivity:
A. Fission and activation gases: Gamma spectrometry (HPGe)
B. Iodines: Gamma spectrometry (HPGe)
C. Particulates: Gamma spectrometry (HPGe), beta proportional counting, alpha proportional counting
D. Tritium: Liquid scintillation
E. Liquid effluents: Gamma spectrometry (HPGe), liquid scintillation (H-3), beta proportional counting, alpha proportional counting.
APPENDIX A
ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT
JANUARY - DECEMBER 2021
VIRGIL C. SUMMER NUCLEAR STATION
V. Batch Releases:
A Gaseous:
- 1. Number of batch releases: 0
- 2. Total time period for batch releases: 0 min
- 3. Maximum time period for a batch release: 0 min
- 4. Average time period for a batch release: 0 min
- 5. Minimum time period for a batch release: 0 min
B. Liquid:
- 1. Number of batch releases:
37 For first quarter, 2021 41 For second quarter, 2021 73 For third quarter, 2021 114 For fourth quarter, 2021
- 2. Total time period for batch releases:
2.81 E+03 min. for first quarter, 2021 3.08E+03 min. for second quarter, 2021 5.35E+03 min. for third quarter, 2021 7.53E+03 min. for fourth quarter 2021
- 3. Maximum time period for a batch release:
8.30E+01 min. for second quarter, 2021 1.04E+02 min. for second quarter, 2021 8.50E+01 min. for third quarter, 2021 9.50E+01 min. for fourth quarter, 2021 APPENDIX A
ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT
JANUARY - DECEMBER 2021
VIRGIL C. SUMMER NUCLEAR STATION
- 4. Average time period for batch releases:
7.58E+01 min. for first quarter, 2021 7.51E+01 min. for second quarter, 2021 7.33E+01 min. for third quarter, 2021 6.61E+01 min. for fourth quarter, 2021
- 5. Minimum time period for a batch release:
7.00E+01 min. for first quarter, 2021 2.00E+00 min. for second quarter, 2021 1.20E+01 min. for third quarter, 2021 1.00E+00 min. for fourth quarter, 2021
- 6. Average stream flow during periods of release of effluent into a flowing stream:
4.16E+06 gpm for first quarter, 2021 4.80E+06 gpm for second quarter, 2021 5.96E+06 gpm for third quarter, 2021 5.39E+06 gpm for fourth quarter, 2021
VI. Abnormal Releases:
A Gaseous:
- 1. Number of releases: 0
- 2. Total activity released: 0
B. Liquid:
- 1. Number of releases: 0
- 2. Total activity released: 0 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT JANUARY - DECEMBER 2021 Virgil C. Summer Nuclear Station
TABLE 1
Gaseous Effluents-Summation of All Releases
Type of Effluent Units Qtr 1 Qtr2 Qtr3 Qtr4 Error,%
A. Fission & Activation Gases
- 1. Total Release Curies 5.56E-02 6.24E-04 0.00E+00 4.22E-01 2.00E+01
- 2. Average Release Rate for Period µCi/sec 7.15E-03 7.94E-05 0.00E+00 5.31E-02
- 3. Percent of Applicable Limit % 1.78E-03 1.81E-05 0.00E+00 8.14E-03
B. Iodines
- 1. Total lodine-131 Curies 0.00E+00 0.00E+00 0.00E+00 0.00E-00 2.50E+01
- 2. Average Release Rate for Period µCi/sec 0.00E+00 0.00E+00 0.00E+00 0.00E-00
- 3. Percent of Applicable Limit % 0.00E+00 0.00E+00 0.00E+00 0.00E-00
C. Particulates
- 1. Total Particulates (Half-lives> 8 days) Curies 1.04E-05 0.00E+00 0.00E+00 0.00E+00 2.50E+01
- 2. Average Release Rate for Period µCi/sec 1.34E-06 0.00E+00 0.00E+00 0.00E+00
- 3. Percent of Applicable Limit % 0.00E+00 0.00E+00 0.00E+00 0.00E+00
- 4. Gross Alpha Activity Curies 0.00E+00 0.00E+00 0.00E+00 0.00E+00 00E+00
D. Tritium
- 1. Total Release Curies 3.24E-01 2.09E-03 0.00E+00 9.77E-01 2.00E+01
- 2. Average Release Rate for Period µCi/sec 4.17E-02 2.66E-04 0.00E+00 1.23E-01
- 3. Percent of Applicable Limit % 2.46E-03 1.59E-05 0.00E+00 7.42E-03
E. Carbon-14
- 1. Total Release Curies 2.03E+00 2.05E+00 2.0BE+00 2.0BE+00 N/A
- 2. Average Release Rate for Period µCi/sec 2.61E-01 2.61E-01 2.61E-01 2.61E-01 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT JANUARY - DECEMBER 2021 Virgil C. Summer Nuclear Station
TABLE2
Gaseous Effluents-Ground Level Releases
Continuous Mode Batch Mode
Nuclides Released Units Qtr 1 Qtr2 Qtr3 Qtr4 Qtr 1 Qtr2 Qtr3 Qtr4
- 1. Fission and Activation Gases Ar-41 Curies 4.72E-02 4.79E-04 0.00E+00 1.66E-01 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Xe-133 Curies 6.56E-03 1.23E-04 0.00E+00 8.30E-09 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Xe-135 Curies 1.85E-03 2.24E-05 0.00E+00 2.56E-01 0.00E+00 0.00E+00 0.00E+00 0.00E+00
Total for Period Curies 5.56E-02 6.24E-04 0.00E+00 4.22E-01 0.00E+00 0.00E+00 0.00E+00 0.00E+00
- 2. Iodines 1-132 Curies 0.00E+00 0.00E+00 0.00E+00 1.38E-06 0.00E+00 0.00E+00 0.00E+00 0.00E+00
Total for Period Curies 0.00E+00 0.00E+00 0.00E+O0 1.38E-06 0.00E+00 0.00E+00 0.00E+00 0.00E+00
- 3. Particulates As-76 Curies 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Be-7 Curies 1.04E-05 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Br-82 Curies 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00
Total for Period Curies 1.04E-05 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00
- 4. Tritium
H-3 Curies 3.24E-01 2.09E-03 0.00E+00 9.77E-01 0.00E+00 0.00E+00 0.00E+00 0.00E+00 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT JANUARY - DECEMBER 2021 Virgil C. Summer Nuclear Station
TABLE3
Liquid Effluents-Summation of All Releases
Type of Effluent Units Qtr 1 Qtr2 Qtr3 Qtr4 Error,%
A. Fission & Activation Products
- 1. Total Release (not including Tritium, Curies 4.87E-05 3.40E-04 1.06E-03 3.94E-04 2.00E+01 Gases, and Alpha)
- 2. Average Diluted Concentration During µCi/ml 1.03E-12 5.61E-12 8.09E-12 3.02E-12 Period
- 3. Percent of Applicable Limit % 9.73E-04 6.81E-03 2.11E-02 7.SSE-03
B. Tritium
- 1. Total Release Curies 2.40E+02 3.03E+02 2.06E+02 5.15E+01 2.00E+01
- 2. Average Diluted Concentration During µCi/ml 5.07E-06 5.00E-06 1.58E-06 3.94E-07 Period
- 3. Percent of Applicable Limit % 5.07E-01 5.00E-01 1.58E-01 3.94E-02
C. Dissolved and Entrained Gases
- 1. Total Release Curies 6.SSE-07 2.29E-03 5.01E-04 2.79E-04 2.00E+01
- 2. Average Diluted Concentration During µCi/ses 1.45E-14 3.78E-11 3.84E-12 2.14E-12 Period
- 3. Percent of Applicable Limit % 7.27E-09 1.89E-05 1.92E-06 1.07E-06
D. Gross Al[!ha Radioactivirt
- 1. Total Release Curies 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00
E. Waste Volume Released (Pre-Dilution) Liters 1.01E+07 1.15E+07 1.10E+07 7.06E+07 3.00E+00
F. Volume of Dilution Water Used Liters 4.73E+10 6.07E+10 1.31E+11 1.30E+11 4.30E+00 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT JANUARY - DECEMBER 2021 Virgil C. Summer Nuclear Station
TABLE4
Liquid Effluents
Continuous Mode Batch Mode Nuclides Released Units Qtr 1 Qtr2 Qtr3 Qtr4 Qtr 1 Qtr2 Qtr3 Qtr4
Ar-41 Curies 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 1.S0E-04 2.0SE-06 1.88E-06
Co-58 Curies 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 9.73E-05
Co-60 Curies 0.00E+00 0.00E+00 0.00E+00 0.00E+00 4.81E-05 3.34E-05 2.90E-04 2.50E-04
Cr-51 Curies 0.00E+00 0.00E+00 0.00E+00 O.00E+00 0.00E+00 0.00E+00 0.00E+00 7.31E-06
Cs-137 Curies 0.00E+00 0.00E+00 0.00E+00 0.00E+00 5.36E-07 4.28E-08 0.00E+00 2.67E-08
H-3 Curies 4.45E-03 0.00E+00 0.00E+00 0.00E+00 2.40E+02 3.03E+02 2.06E+02 5.15E+01
Kr-85M Curies 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 6.15E-06 0.00E+00 0.00E+00
Kr-88 Curies 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 4.88E-06 0.00E+00 0.00E+00
Mn-54 Curies 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 1.55E-05 1.16E-05
Nb-95 Curies 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 1.17E-05
Ni-63 Curies 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 2.68E-04 7.40E-04 0.00E+00
Sb-125 Curies 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 3.86E-05 1.04E-05 5.96E-06
Te-123M Curies 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 7.00E-06
Xe-133 Curies 0.00E+00 0.00E+00 0.00E+00 0.00E+00 6.88E-07 1.91E-03 4.32E-04 2.71E-04
Xe-133m Curies 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 2.59E-05 0.00E+00 0.00E+00
Xe-135 Curies 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 1.69E-04 6.74E-05 6.26E-06
Zr-95 Curies 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 2.83E-06
Total for Period Curies 4.45E-03 0.00E+00 0.00E+00 0.00E+O0 2.40E+02 3.03E+02 2.06E+02 5.15E+01 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January - December 2021
Virgil C. Summer Nuclear Station Dominion Energy Table 5 SOLID WASTE SHIPMENTS
- 1. Solid Waste Shipped Offsite for Burial or Disposal (Not irradiated fuel)
Tvpe of Waste Unit Total 2021 Est. Total Error,%
- a. Spent resins, filters, sludge, m3 2.98E+01 2.5E+01 evaporator bottoms, etc. Ci 1.79E+02
- b. Dry compressible waste, metals, m3 2.93E+02 2.5E+01 contaminated equipment, etc. Ci 6.95E-02
- c. Irradiated components, m3 0.00E+00 NIA control rods, etc. Ci 0.00E+00
- d. Other waste, oil, etc. m3 3.80E-02 2.5E+01 Ci 6.77E-05
- 2. Estimate of major nuclide composition for the year (by type of waste) for concentrations above 1.0%
a.
Ni-63 81.64 % 1.46E+02 Ci Co-60 9.08% 1.62E+01 Ci Fe-55 4.81% 8.61E+00 Ci Mn-54 1.85% 3.23E+00 Ci
b.
Co-60 32.14 % 2.23E-02 Ci Fe-55 27.02% 1.88E-02 Ci Ni-63 10.09% 7.01E-03 Ci Co-58 8.17% 5.68E-03 Ci Nb-95 7.24% 5.03E-03 Ci Cr-51 5.11% 3.55E-03 Ci Zr-95 3.85 % 2.67E-03 Ci Mn-54 2.67% 1.85E-03 Ci Sb-125 1.42% 9.89E-04 Ci ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January - December 2021
Virgil C. Summer Nuclear Station Dominion Energy Table 5 SOLID WASTE SHIPMENTS
C.
'I ---------=-N-=--o_n_e--------,---N=-=-/-:-::A----,-----N-/A---~
d.
Am-241 (Smoke Detectors) 100% 6.77E-05 Ci
- 3. Solid Waste Disposition
Number of Shioments Mode of Transnortation Destination
Energy Solutions, LLC -
2 Hittman Transport Barnwell Processing Facility
Barnwell, SC
7 Transfer/FedEx Wampum, PA Landstar/Miller Alaron Nuclear Services
Specialty Transport, Inc. UniTech Services Group, Inc.
2 Oakridge, TN
Notes:
- 1. Two shipments by Hittman Transport containing (1)10-160 FR SEDS High Integrity Container of Dewatered Primary Resin; (1) 8-120 FR High Integrity Container were shipped to the Barnwell Processing facility for processing.
- 2. Four shipments by Landstar, one Shipment by Miller Transfer, and two shipments by FedEx containing (6) 20-foot Sealands of Dry Active Waste; (11) 8-25 Boxes of Gross Dewatered Resin and DAW, and (2) drums of smoke detectors were shipped to Alaron in Wampum, PA for processing/waste disposal.
- 3. Two shipments by Specialty Transport, Inc. containing (3) 20-foot Sealands of Green-is Clean (GIG) waste was shipped to Oakridge, TN for processing.
ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT JANUARY - DECEMBER 2021 Virgil C. Summer Nuclear Station
TABLE6
Gaseous Effluents
Parameter Location Dose Dose Limit % of Limit Qtr 1 Gamma Air Dose (mrad) 1.61 km ENE 8.89E-05 5.00E+00 0.00 Beta Air Dose (mrad) 1.61 km ENE 3.32E-05 1.00E+01 0.00 Total Body Dose (mrem) 1.61 km ENE 8.44E-05 5.00E+00 0.00 Skin Dose (mrem) 1.61 km ENE 1.24E-04 7.50E+00 0.00 Max Organ Dose (mrem) 1.77 km E 1.85E-04 7.50E+00 0.00 Child-Liver
Qtr 2 Gamma Air Dose (mrad) 1.61 km ENE 9.07E-07 5.00E+00 0.00 Beta Air Dose (mrad) 1.61 km ENE 3.51E-07 1.00E+01 0.00 Total Body Dose (mrem) 1.61 km ENE 8.61E-07 5.00E+00 0.00 Skin Dose (mrem) 1.61 km ENE 1.27E-06 7.50E+00 0.00 Max Organ Dose (mrem) 1.77 km E 1.19E-06 7.50E+00 0.00 Child - Liver
Qtr3 Gamma Air Dose (mrad) 1.61 km ENE 0.00E+00 5.00E+00 0.00 Beta Air Dose (mrad) 1.61 km ENE 0.00E+00 1.00E+01 0.00 Total Body Dose (mrem) 1.61 km ENE 0.00E+00 5.00E+00 0.00 Skin Dose (mrem) 1.61 km ENE 0.00E+00 7.50E+00 0.00 Max Organ Dose (mrem) 1.77 km E 0.00E+00 7.50E+00 0.00 None-None
Qtr4 Gamma Air Dose (mrad) 1.61 km ENE 4.07E-04 5.00E+00 0.01 Beta Air Dose (mrad) 1.61 km ENE 2.35E-04 1.00E+01 0.00 Total Body Dose (mrem) 1.61 km ENE 3.86E-04 5.00E+00 0.01 Skin Dose (mrem) 1.61 km ENE 6.32E-04 7.50E+00 0.01 Max Organ Dose (mrem) 1.77 km E 5.57E-04 7.50E+00 0.01 Child - Thyroid
Year Gamma Air Dose (mrad) 1.61 km ENE 4.97E-04 1.00E+01 0.00 Beta Air Dose (mrad) 1.61 km ENE 2.68E-04 2.00E+01 0.00 Total Body Dose (mrem) 1.61 km ENE 4.71E-04 1.00E+01 0.00 Skin Dose (mrem) 1.61 km ENE 7.57E-04 1.50E+01 0.01 Max Organ Dose (mrem)* 1.77 km E 7.43E-04 1.50E+01 0.00 Child - Thyroid
(* Includes dose from all nuclides excluding Carbon-14. See Section K for C-14)
Liquid Effluents
Parameter Max Rece~tor Dose Dose Limit % of Limit Qtr 1 Max Organ Dose (mrem) Adult - Gi-Lli 2.63E-03 5.00E+00 0.05 Total Body Dose (mrem) Adult - Total Body 2.63E-03 1.50E+00 0.18 Qtr2 Max Organ Dose (mrem) Adult - Liver 3.06E-03 5.00E+00 0.06 Total Body Dose (mrem) Adult - Total Body 3.06E-03 1.50E+00 0.20 Qtr3 Max Organ Dose (mrem) Adult - Gi-Lli 1.75E-03 5.00E+00 0.03 Total Body Dose (mrem) Adult - Total Body 1.75E-03 1.50E+00 0.12 Qtr4 Max Organ Dose (mrem) Adult - Gi-Lli 4.76E-04 5.00E+00 0.01 Total Body Dose (mrem) Adult - Total Body 4.57E-04 1.50E+00 0.03 Year Max Organ Dose (mrem) Adult - Gi-Lli 7.91E-03 1.00E+01 0.08 Total Body Dose (mrem) Adult - Total Body 7.89E-03 3.00E+00 0.26
NOTE: See Section E for max organ for each quarter ENCLOSURE A
ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT
JANUARY - DECEMBER 2021
VIRGIL C. SUMMER NUCLEAR STATION
METEOROLOGICAL DATA
JOINT FREQUENCY DISTRIBUTION TABLES
Quarterly Summaries
Annual Summary Quarterly Summaries Site: VC Report Printed On: 03/21/2022 14:27 Joint Frequency Distribution
Hours at Each Wind Speed and Direction
Total Period All Hours Period of Record = 01/01/2021 01:00 - 04/01/2021 00:00
Elevation: Speed: SPl0Tl Direction: DRlOTl Lapse: DT61Tl
Stability Class: A Delta Temperature Extremely Unstable
Wind Speed (mph)
Wind Direction 0.8-3.9 4.0-7.9 8.0-12.9 13.0-18.9 19.0-23.9 >24.0 Total N 7 9 2 0 0 19 NNE 2 4 0 4 0 0 10 NE 0 5 10 0 0 16 ENE 0 1 2 0 0 4 E 0 3 1 0 0 5 ESE 0 0 0 0 0 0 0 SE 0 0 0 0 0 0 0 SSE 0 0 0 0 0 1 s 1 0 0 4 SSW 0 7 0 0 0 8 SW 3 20 7 1 0 0 31 WSW 7 26 4 0 0 0 37 w 6 25 9 0 0 0 40 WNW 7 14 0 0 0 0 21 NW 6 14 7 0 0 0 27 NNW 5 8 5 0 0 19
Total 44 137 39 21 0 242
Calm Hours not Included above for: Total Period All Hours Variable Direction Hours for: Total Period All Hours 0 Invalid Hours for: Total Period All Hours 0 Number of Valid Hours for this Table: Total Period All Hours 242 Total Hours for the Period: 2160
Page 1 of 8 Site: VC Report Printed On: 03/21/2022 14:27 Joint Frequency Distribution
Hours at Each Wind Speed and Direction
Total Period All Hours Period of Record = 01/01/2021 01:00 - 04/01/2021 00:00
Elevation: Speed: SP10Tl Direction: DRl0TI Lapse: DT61TJ
Stability Class: B Delta Temperature Moderately Unstable
Wind Speed (mph)
Wind Direction 0.8-3.9 4.0-7.9 8.0-12.9 13.0-18.9 19.0-23.9 >24.0 Total N 5 9 7 6 0 0 27 NNE 3 6 20 25 2 0 56 NE 2 5 20 23 0 0 50 ENE 0 4 2 0 0 0 6 E 4 3 0 0 0 8 ESE 0 2 0 0 0 0 2 SE 0 0 0 0 0 SSE 0 2 0 0 0 3 s 0 3 6 0 0 10 SSW 3 2 0 8 SW 3 3 0 0 0 7 WSW 4 0 0 0 0 5 w 0 4 0 0 0 0 4 WNW 0 0 0 0 0 1 NW 3 3 2 0 0 0 8 NNW 2 3 4 0 0 10
Total 19 56 70 57 4 0 206
Calm Hours not Included above for: Total Period All Hours Variable Direction Hours for: Total Period AU Hours 0 Invalid Hours for: Total Period All Hours 0 Number of Valid Hours for this Table: Total Period All Hours 206 Total Hours for the Period: 2160
Page 2 of8 Site: VC Report Printed On: 03/21/2022 14:27 Joint Frequency Distribution
Hours at Each Wind Speed and Direction
Total Period All Hours Period of Record = 01/01/2021 01 :00 - 04/01/2021 00:00
Elevation: Speed: SPIOTI Direction: DRIOTI Lapse: DT61Tl
Stability Class: C Delta Temperature Slightly Unstable
Wind Speed (mph)
Wind Direction 0.8-3.9 4.0-7.9 8.0-12.9 13.0-18.9 19.0-23.9 >24.0 Total N 3 12 14 2 0 0 31 NNE 7 53 23 0 0 84 NE 11 59 18 2 0 91 ENE 0 11 30 8 0 0 49 E 0 3 16 0 0 0 19 ESE 0 3 3 0 0 0 6 SE 8 0 0 0 0 9 SSE 9 I 0 0 0 11 s 13 3 0 0 0 17 SSW 3 9 4 0 0 0 16 SW 0 4 0 0 0 5 WSW 8 0 0 0 0 9 w 2 3 1 0 0 0 6 WNW 2 2 0 0 0 0 4 NW 3 5 2 0 0 0 10 NNW 11 3 2 0 0 17
Total 20 119 190 53 2 0 384
Calm Hours not Included above for: Total Period All Hours Variable Direction Hours for: Total Period All Hours 0 Invalid Hours for: Total Period All Hours 0 Number of Valid Hours for this Table: Total Period All Hours 384 Total Hours for the Period: 2160
Page 3 of 8 Site: VC Report Printed On: 03/21/2022 14:27 Joint Frequency Distribution
Hours at Each Wind Speed and Direction
Total Period All Hours Period of Record = 01/01/2021 01:00 - 04/01/2021 00:00
Elevation: Speed: SPIOTl Direction: DRIOTl Lapse: DT61Tl
Stability Class: D Delta Temperature Neutral
Wind Speed (mph)
Wind Direction 0.8-3.9 4.0-7.9 8.0-12.9 13.0-18.9 19.0-23.9 >24.0 Total N 5 11 11 2 0 0 29 NNE 11 12 10 7 0 0 40 NE 3 23 34 7 0 0 67 ENE 3 36 27 4 0 0 70 E 1 46 17 0 0 0 64 ESE 4 18 3 0 0 0 25 SE 5 27 7 0 0 0 39 SSE 9 22 2 0 0 0 33 s 7 14 4 0 0 0 25 SSW 11 12 16 0 0 0 39 SW 17 30 3 0 0 0 50 WSW 10 26 2 0 0 0 38 w 21 24 0 0 0 46 WNW 12 18 0 0 0 31 NW 12 16 10 l 0 0 39 NNW 3 6 13 4 0 0 26
Total 134 341 161 25 0 0 661
Calm Hours not Included above for: Total Period All Hours Variable Direction Hours for: Total Period All Hours 0 Invalid Hours for: Total Period All Hours 0 Number of Valid Hours for this Table: Total Period All Hours 661 Total Hours for the Period: 2160
Page 4 of 8 Site: VC Report Printed On: 03/21/2022 14:27 Joint Frequency Distribution
Hours at Each Wind Speed and Direction
Total Period All Hours Period of Record = 01/01/2021 01:00 - 04/01/2021 00:00
Elevation: Speed: SPIOTl Direction: DRIOTl Lapse: DT61Tl
Stability Class: E Delta Temperature Slightly Stable
Wind Speed (mph)
Wind Direction 0.8-3.9 4.0-7.9 8.0-12.9 13.0-18.9 19.0-23.9 >24.0 Total N 6 9 4 0 0 0 19 NNE 7 14 3 0 0 0 24 NE 2 8 2 0 0 0 12 ENE 3 5 0 0 0 0 8 E 3 6 I 0 0 0 10 ESE 7 4 0 0 0 0 11 SE 7 5 0 0 0 0 12 SSE 9 18 0 0 0 28 s 8 9 0 0 0 18 SSW 17 35 3 0 0 0 55 SW 35 23 0 0 0 59 WSW 33 16 0 0 0 0 49 w 21 13 0 0 0 35 WNW 14 8 0 0 0 0 22 NW 9 13 0 0 0 0 22 NNW 8 11 4 0 0 0 23
Total 189 197 21 0 0 0 407
Calm Hours not Included above for: Total Period All Hours Variable Direction Hours for: Total Period AllHonrs 0 Invalid Hours for: Total Period All Hours 0 Number of Valid Hours for this Table: Total Period All Hours 407 Total Hours for the Period: 2160
Page 5 of 8 Site: VC Report Printed On: 03/21/2022 14:27 Joint Frequency Distribution
Hours at Each Wind Speed and Direction
Total Period All Hours Period of Record = 01/01/2021 01:00 - 04/01/2021 00:00
Elevation: Speed: SPlOTl Direction: DRlOTI Lapse: DT61TI
Stability Class: F Delta Temperature Moderately Stable
Wind Speed (mph)
Wind Direction 0.8-3.9 4.0-7.9 8.0-12.9 13.0-18.9 19.0-23.9 >24.0 Total N 6 2 0 0 0 0 8 NNE 3 0 0 0 0 0 3 NE 0 0 0 0 0 ENE 0 0 0 0 0 E 2 0 0 0 0 0 2 ESE 4 0 0 0 0 0 4 SE 4 11 0 0 0 0 15 SSE 11 9 0 0 0 0 20 s 6 13 0 0 0 0 19 SSW 13 9 0 0 0 0 22 SW 14 7 0 0 0 0 21 WSW 8 6 0 0 0 0 14 w 6 4 0 0 0 0 10 WNW 11 0 0 0 0 12 NW 13 6 0 0 0 0 19 NNW 2 0 0 0 0 0 2
Total 105 68 0 0 0 0 173
Calm Hours not Included above for: Total Period All Hours Variable Direction Hours for: Total Period All Hours 0 Invalid Hours for: Total Period All Hours 0 Number of Valid Hours for this Table: Total Period All Hours 173 Total Hours for the Period: 2160
Page 6 of 8 Site: VC Report Printed On: 03/21/2022 14:27 Joint Frequency Distribution
Hours at Each Wind Speed and Direction
Total Period All Hours Period of Record = 01/01/2021 01:00 - 04/01/2021 00:00
Elevation: Speed: SPIOTl Direction: DRIOTl Lapse: DT61Tl
Stability Class: G Delta Temperature Extremely Stable
Wind Speed (mph)
Wind Direction 0.8-3.9 4.0-7.9 8.0-12.9 13.0-18.9 19.0-23.9 >24.0 Total N 0 0 0 0 0 NNE 2 0 0 0 0 0 2 NE 1 0 0 0 0 0 1 ENE 0 0 0 0 0 0 0 E 0 0 0 0 0 0 0 ESE 0 0 0 0 0 0 0 SE 1 0 0 0 0 0 SSE 4 0 0 0 0 5 s 5 4 0 0 0 0 9 SSW 6 2 0 0 0 0 8 SW 11 4 0 0 0 0 15 WSW 18 1 0 0 0 0 19 w 7 0 0 0 0 0 7 WNW 7 0 0 0 0 0 7 NW 7 2 0 0 0 0 9 NNW 2 0 0 0 0 0 2
Total 71 15 0 0 0 0 86
Calm Hours not Included above for: Total Period All Hours Variable Direction Hours for: Total Period All Hours 0 Invalid Hours for: Total Period All Hours 0 Number of Valid Hours for this Table: Total Period All Hours 86 Total Hours for the Period: 2160
Page 7 of 8 Site: VC Report Printed On: 03/21/2022 14:27 Joint Frequency Distribution
Hours at Each Wind Speed and Direction
Total Period All Hours Period of Record = 01/01/2021 01:00 - 04/01/2021 00:00
Elevation: Speed: SP10Tl Direction: DRl0Tl Lapse: DT61Tl
Stability Class: ALL Delta Temperature
Wind Speed (mph)
Wind Direction 0.8-3.9 4.0-7.9 8.0-12.9 13.0-18.9 19.0-23.9 >24.0 Total N 32 53 37 12 0 0 134 NNE 29 43 86 59 2 0 219 NE 10 52 116 58 2 0 238 ENE 7 57 61 13 0 0 138 E 7 62 38 0 0 108 ESE 15 27 6 0 0 0 48 SE 18 52 7 0 0 0 77 SSE 34 60 7 0 0 0 101 s 28 57 15 2 0 0 102 SSW 51 77 24 3 0 156 SW 81 91 15 1 0 0 188 WSW 78 87 6 0 0 0 171 w 63 73 12 0 0 0 148 WNW 53 44 0 0 0 98 NW 53 59 21 0 0 134 NNW 23 39 29 8 0 0 99
Total 582 933 481 156 7 0 2159
Calm Hours not Included above for: Total Period All Hours Variable Direction Hours for: Total Period All Hours 0 Invalid Hours for: Total Period All Hours 0 Number of Valid Hours for this Table: Total Period All Hours 2159 Total Hours for the Period: 2160
Page 8 of8 Site: VC Report Printed On: 03/21/2022 14:28 Joint Frequency Distribution
Hours at Each Wind Speed and Direction
Total Period All Hours Period of Record = 04/01/2021 01:00 - 07/01/2021 00:00
Elevation: Speed: SPIOTI Direction: DRIOTI Lapse: DT61Tl
Stability Class: A Delta Temperature Extremely Unstable
Wind Speed (mph)
Wind Direction 0.8-3.9 4.0-7.9 8.0-12.9 13.0-18.9 19.0-23.9 >24.0 Total N 17 28 12 6 2 66 NNE 16 32 10 2 0 0 60 NE 8 32 27 3 0 0 70 ENE 0 20 18 2 0 0 40 E 0 6 10 0 0 0 16 ESE 0 3 2 0 0 0 5 SE 0 0 0 0 0 SSE 0 2 3 0 0 0 5 s 5 0 0 0 7 SSW 0 11 13 0 0 0 24 SW 4 46 14 0 0 0 64 WSW 8 51 12 0 0 0 71 w 12 24 10 0 0 0 46 WNW 5 14 0 0 0 0 19 NW 3 6 13 1 0 0 23 NNW 7 16 4 6 1 0 34
Total 81 293 153 20 3 551
Calm Hours not Included above for: Total Period All Hours 0 Variable Direction Hours for: Total Period All Hours 0 Invalid Hours for: Total Period All Hours 113 Number of Valid Hours for this Table: Total Period All Hours 551 Total Hours for the Period: 2184
Page 1 of 8 Site: VC Report Printed On: 03/21/2022 14:28 Joint Frequency Distribution
Hours at Each Wind Speed and Direction
Total Period All Hours Period of Record = 04/01/2021 01:00 - 07/01/2021 00:00
Elevation: Speed: SPlOTI Direction: DRIOTI Lapse: DT61Tl
Stability Class: B Delta Temperature Moderately Unstable
Wind Speed (mph)
Wind Direction 0.8-3.9 4.0-7.9 8.0-12.9 13.0-18.9 19.0-23.9 >24.0 Total N 5 4 4 6 0 0 19 NNE 2 2 9 6 0 0 19 NE 2 3 9 5 4 0 23 ENE 1 3 0 0 6 E 1 2 3 0 0 0 6 ESE 0 2 0 0 0 3 SE 1 1 0 0 0 3 SSE 0 3 4 0 0 0 7 s 2 3 4 0 0 0 9 SSW 0 9 5 0 0 15 SW 2 23 2 0 0 0 27 WSW 4 11 3 0 0 0 18 w 2 6 0 0 0 0 8 WNW 4 2 0 0 0 7 NW 4 3 0 0 0 0 7 NNW 3 5 4 3 0 16
Total 33 82 51 22 5 0 193
Calm Hours not Included above for: Total Period All Hours 0 Variable Direction Hours for: Total Period All Hours 0 Invalid Hours for: Total Period All Hours 113 Number of Valid Hours for this Table: Total Period All Hours 193 Total Hours for the Period: 2184
Page 2 of 8 Site: VC Report Printed On: 03/21/2022 14:28 Joint Frequency Distribution
Hours at Each Wind Speed and Direction
Total Period All Hours Period of Record = 04/01/2021 01:00 - 07/01/2021 00:00
Elevation: Speed: SPl0Tl Direction: DRlOTl Lapse: DT61Tl
Stability Class: C Delta Temperature Slightly Unstable
Wind Speed (mph)
Wind Direction 0.8-3.9 4.0-7.9 8.0-12.9 13.0-18.9 19.0-23.9 >24.0 Total N 3 3 9 4 0 0 19 NNE 2 3 9 1 0 0 15 NE 0 6 14 2 0 0 22 ENE 3 4 2 0 0 10 E 2 8 0 0 0 11 ESE 0 4 2 0 0 0 6 SE 4 3 0 0 0 8 SSE I 7 2 0 0 11 s 0 4 12 0 0 0 16 SSW 8 5 0 0 15 SW 5 6 0 0 0 12 WSW 2 11 0 0 0 14 w 0 8 0 0 0 0 8 WNW 3 0 0 0 0 0 3 NW 2 0 0 0 4 NNW 2 2 0 0 6
Total 24 71 72 13 0 0 180
Calm Hours not Included above for: Total Period All Hours 0 Variable Direction Hours for: Total Period All Hours 0 Invalid Hours for: Total Period All Hours 113 Number of Valid Hours for this Table: Total Period All Hours 180 Total Hours for the Period: 2184
Page 3 of 8 Site: VC Report Printed On: 03/21/2022 14:28 Joint Frequency Distribution
Hours at Each Wind Speed and Direction
Total Period All Hours Period of Record = 04/01/2021 01:00 - 07/01/2021 00:00
Elevation: Speed: SPIOTI Direction: DRIOTI Lapse: DT61Tl
Stability Class: D Delta Temperature Neutral
Wind Speed (mph)
Wind Direction 0.8-3.9 4.0-7.9 8.0-12.9 13.0-18.9 19.0-23.9 >24.0 Total N 1 5 8 0 0 15 NNE 4 4 9 0 0 0 17 NE 6 15 0 2 0 24 ENE 6 14 14 0 0 35 E 2 25 12 0 0 0 39 ESE 5 0 0 0 7 SE 1 22 4 0 0 0 27 SSE 9 10 2 0 0 0 21 s 8 19 6 0 0 34 SSW 13 36 14 0 0 0 63 SW 22 39 5 0 0 0 66 WSW 18 35 3 0 0 0 56 w 13 13 0 0 0 0 26 WNW 9 3 2 0 0 0 14 NW 4 10 2 0 0 0 16 NNW 4 3 0 0 0 0 7
Total 116 249 97 3 2 0 467
Calm Hours not Included above for: Total Period All Hours 0 Variable Direction Hours for: Total Period All Hours 0 Invalid Hours for: Total Period All Hours 113 Number of Valid Honrs for this Table: Total Period All Hours 467 Total Hours for the Period: 2184
Page4 of 8 Site; VC Report Printed On; 03/21/2022 14:28 Joint Frequency Distribution
Hours at Each Wind Speed and Direction
Total Period All Hours Period of Record = 04/01/2021 01:00 - 07/01/2021 00:00
Elevation: Speed; SPlOTl Direction: DRlOTI Lapse: DT61Tl
Stability Class: E Delta Temperature Slightly Stable
Wind Speed (mph)
Wind Direction 0.8-3.9 4.0-7.9 8.0-12.9 13.0-18.9 19.0-23.9 >24.0 Total N 4 4 1 0 0 0 9 NNE 3 2 3 0 0 0 8 NE 5 5 2 0 0 0 12 ENE 2 11 2 0 0 0 15 E 4 15 0 0 0 20 ESE 0 9 0 0 0 0 9 SE 7 23 0 0 0 0 30 SSE 15 23 0 0 0 0 38 s 19 13 1 0 0 0 33 SSW 18 34 3 0 0 0 55 SW 24 13 0 0 0 0 37 WSW 23 7 0 0 0 0 30 w 14 7 0 0 0 0 21 WNW 15 2 0 0 0 0 17 NW 7 7 1 0 0 0 15 NNW 3 3 0 0 0 7
Total 163 178 15 0 0 0 356
Calm Hours not Included above for: Total Period All Hours 0 Variable Direction Hours for: Total Period All Hours 0 Invalid Hours for: Total Period All Hours 113 Number of Valid Hours for this Table: Total Period All Hours 356 Total Hours for the Period: 2184
Page 5 of 8 Site: VC Report Printed On: 03/21/2022 14:28 Joint Frequency Distribution
Hours at Each Wind Speed and Direction
Total Period All Hours Period of Record = 04/01/2021 01:00 - 07/01/2021 00:00
Elevation: Speed: SPlOTl Direction: DRIOTI Lapse: DT61Tl
Stability Class: F Delta Temperature Moderately Stable
Wind Speed (mph)
Wind Direction 0.8-3.9 4.0-7.9 8.0-12.9 13.0-18.9 19.0-23.9 >24.0 Total N 2 0 0 0 0 0 2 NNE 1 0 0 0 0 0 1 NE 0 0 0 0 0 0 0 ENE 0 0 0 0 0 E 0 0 0 0 0 0 0 ESE 2 0 0 0 0 0 2 SE 6 5 0 0 0 0 11 SSE 16 12 0 0 0 0 28 s 8 15 0 0 0 0 23 SSW 16 12 0 0 0 0 28 SW 24 3 0 0 0 0 27 WSW 17 6 0 0 0 0 23 w 11 0 0 0 0 0 11 WNW 11 0 0 0 0 0 11 NW 3 0 0 0 0 0 3 NNW 2 3 0 0 0 0 5
Total 120 56 0 0 0 0 176
Calm Hours not Included above for: Total Period All Hours 0 Variable Direction Hours for: Total Period All Hours 0 Invalid Hours for: Total Period All Hours 113 Number of Valid Hours for this Table: Total Period All Hours 176 Total Hours for the Period: 2184
Page 6 of 8 Site: VC Report Printed On: 03/21/2022 14:28 Joint Frequency Distribution
Hours at Each Wind Speed and Direction
Total Period All Hours Period of Record = 04/01/2021 01:00 - 07/01/2021 00:00
Elevation: Speed: SPIOTI Direction: DRl0TI Lapse: DT61Tl
Stability Class: G Delta Temperature Extremely Stable
Wind Speed (mph)
Wind Direction 0.8-3.9 4.0-7.9 8.0-12.9 13.0-18.9 19.0-23.9 >24.0 Total N 0 0 0 0 0 NNE 1 0 0 0 0 0 NE 0 0 0 0 0 0 0 ENE 0 0 0 0 0 0 0 E 0 0 0 0 0 0 0 ESE 0 0 0 0 0 0 0 SE 1 I 0 0 0 0 2 SSE 9 8 0 0 0 0 17 s 15 3 0 0 0 0 18 SSW 16 2 0 0 0 0 18 SW 16 4 0 0 0 0 20 WSW 24 5 0 0 0 0 29 w 24 3 0 0 0 0 27 WNW 8 0 0 0 0 0 8 NW 4 0 0 0 0 5 NNW 2 0 0 0 0 0 2
Total 121 27 0 0 0 0 148
Calm Hours not Included above for: Total Period All Hours 0 Variable Direction Hours for: Total Period All Hours 0 Invalid Hours for: Total Period All Hours 113 Number of Valid Hours for this Table: Total Period All Hours 148 Total Hours for the Period: 2184
Page 7 of 8 Site: VC Report Printed On: 03/21/2022 14:28 Joint Frequency Distribution
Hours at Each Wind Speed and Direction
Total Period All Hours Period of Record = 04/01/2021 01 :00 - 07/01/2021 00:00
Elevation: Speed: SPIOTI Direction: DRIOTI Lapse: DT61Tl
Stability Class: ALL Delta Temperature
Wind Speed (mph)
Wind Direction 0.8-3.9 4.0-7.9 8.0-12.9 13.0-18.9 19.0-23.9 >24.0 Total N 33 44 34 17 2 1 131 NNE 29 43 40 9 0 0 121 NE 16 52 67 10 6 0 151 ENE 11 51 39 6 0 0 107 E 8 50 34 0 0 0 92 ESE 3 23 6 0 0 0 32 SE 17 57 8 0 0 0 82 SSE 50 65 11 0 0 127 s 53 58 28 0 0 140 SSW 64 112 40 2 0 0 218 SW 97 134 22 0 0 0 253 WSW 96 126 19 0 0 0 241 w 76 61 10 0 0 0 147 WNW 55 21 3 0 0 0 79 NW 27 28 17 0 0 73 NNW 23 31 10 11 2 0 77
Total 658 956 388 58 10 2071
Calm Hours not Included above for: Total Period All Hours 0 Variable Direction Hours for: Total Period All Hours 0 Invalid Hours for: Total Period All Hours 113 Number of Valid Hours for this Table: Total Period All Hours 2071 Total Hours for the Period: 2184
Page 8 of 8 Site: VC Report Printed On: 03/21/2022 14:29 Joint Frequency Distribution
Hours at Each Wind Speed and Direction
Total Period All Hours Period of Record= 07/01/2021 01 :00 - 10/01/2021 00:00
Elevation: Speed: SPIOTI Direction: DRIOTl Lapse: DT61Tl
Stability Class: A Delta Temperature Extremely Unstable
Wind Speed (mph)
Wind Direction 0.8-3.9 4.0-7.9 8.0-12.9 13.0-18.9 19.0-23.9 >24.0 Total N 25 28 7 0 0 61 NNE 16 28 9 0 0 54 NE 12 27 12 2 0 0 53 ENE 1 13 8 0 0 23 E I 5 I 0 0 0 7 ESE 3 2 0 0 0 0 5 SE 0 2 2 0 0 0 4 SSE 0 2 0 0 0 3 s 0 7 10 2 0 0 19 SSW 6 6 0 0 0 13 SW 12 29 1 0 0 0 42 WSW 13 20 0 0 0 0 33 w IO 15 I 0 0 0 26 WNW 8 8 0 0 0 0 16 NW 5 5 3 0 0 0 13 NNW 7 8 0 0 0 16
Total I 15 203 63 7 0 0 388
Calm Hours not Included above for: Total Period All Hours 0 Variable Direction Hours for: Total Period All Hours 0 Invalid Hours for: Total Period All Hours 0 Number of Valid Hours for this Table: Total Period All Hours 388 Total Hours for the Period: 2208
Page 1 of 8 Site: VC Report Printed On: 03/21/2022 14:29 Joint Frequency Distribution
Hours at Each Wind Speed and Direction
Total Period All Hours Period of Record = 07/01/2021 01:00 - 10/01/2021 00:00
Elevation: Speed: SPlOTl Direction: DRl0Tl Lapse: DT61Tl
Stability Class: B Delta Temperature Moderately Unstable
Wind Speed (mph)
Wind Direction 0.8-3.9 4.0-7.9 8.0-12.9 13.0-18.9 19.0-23.9 >24.0 Total N 11 9 3 0 2 1 26 NNE 5 11 7 6 1 0 30 NE 7 9 1 0 0 18 ENE 6 0 0 0 8 E 0 4 4 0 0 0 8 ESE 0 2 l 0 0 0 3 SE 2 2 0 0 0 5 SSE 15 0 0 0 17 s 0 11 4 0 0 0 15 SSW 2 25 3 0 0 0 30 SW 12 25 0 0 0 0 37 WSW 9 2 0 0 0 0 11 w 2 2 0 0 0 0 4 WNW 5 2 0 0 0 8 NW 7 2 0 0 0 10 NNW 8 1 0 12
Total 66 120 43 8 4 242
Calm Hours not Included above for: Total Period All Hours 0 Variable Direction Hours for: Total Period All Hours 0 Invalid Hours for: Total Period All Hours 0 Number of Valid Hours for this Table: Total Period All Hours 242 Total Hours for the Period: 2208
Page 2 of8 Site: VC Report Printed On: 03/21/2022 14:29 Joint Frequency Distribution
Hours at Each Wind Speed and Direction
Total Period All Hours Period of Record = 07/01/2021 01:00 - 10/01/2021 00:00
Elevation: Speed: SPlOTI Direction: DRI0TI Lapse: DT61TI
Stability Class: C Delta Temperature Slightly Unstable
Wind Speed {mph)
Wind Direction 0.8-3.9 4.0-7.9 8.0-12.9 13.0-18.9 19.0-23.9 >24.0 Total N 5 4 2 5 0 0 16 NNE 2 4 15 4 0 0 25 NE 0 12 18 0 0 0 30 ENE 0 4 13 0 0 0 17 E 7 7 0 0 0 15 ESE 3 3 0 0 0 7 SE 2 10 1 0 0 0 13 SSE I 20 0 1 0 0 22 s 2 12 8 0 0 0 22 SSW I 26 0 0 0 0 27 SW 9 20 0 0 0 0 29 WSW 7 5 0 0 0 0 12 w 5 2 0 0 0 0 7 WNW 4 0 0 0 0 5 NW 0 2 0 0 0 0 2 NNW 2 4 0 0 0 7
Total 42 136 67 11 0 0 256
Calm Hours not Included above for: Total Period All Hours 0 Variable Direction Hours for: Total Period All Hours 0 Invalid Hours for: Total Period All Hours 0 Number of Valid Hours for this Table: Total Period AU Hours 256 Total Hours for the Period: 2208
Page 3 of 8 Site: VC Report Printed On: 03/21/2022 14:29 Joint Frequency Distribution
Hours at Each Wind Speed and Direction
Total Period All Hours Period of Record= 07/01/2021 01:00 - 10/01/2021 00:00
Elevation: Speed: SPIOTI Direction: DRl0Tl Lapse: DT61Tl
Stability Class: D Delta Temperature Neutral
Wind Speed (mph)
Wind Direction 0.8-3.9 4.0-7.9 8.0-12.9 13.0-18.9 19.0-23.9 >24.0 Total N 6 3 6 0 0 0 15 NNE 6 7 5 0 1 1 20 NE 4 19 5 0 30 ENE 3 25 13 0 0 42 E 7 29 21 0 0 0 57 ESE 5 10 0 0 0 0 15 SE 8 23 2 0 0 0 33 SSE 12 31 3 0 0 0 46 s 16 44 5 0 0 0 65 SSW 17 91 7 0 0 116 SW 31 24 1 0 0 0 56 WSW 22 10 0 0 0 0 32 w 21 3 0 0 0 0 24 WNW 20 0 0 0 0 0 20 NW II 6 0 0 0 0 17 NNW 4 6 0 0 0 0 10
Total 193 331 68 3 2 598
Calm Hours not Included above for: Total Period All Hours 0 Variable Direction Hours for: Total Period All Hours 0 Invalid Hours for: Total Period All Hours 0 Number of Valid Hours for this Table: Total Period All Hours 598 Total Hours for the Period: 2208
Page4 of 8 Site: VC Report Printed On: 03/21/2022 14:29 Joint Frequency Distribution
Hours at Each Wind Speed and Direction
Total Period All Hours Period of Record= 07/01/2021 01 :00 - 10/01/2021 00:00
Elevation: Speed: SPlOTI Direction: DRIOTI Lapse: DT61Tl
Stability Class: E Delta Temperature Slightly Stable
Wind Speed (mph)
Wind Direction 0.8-3.9 4.0-7.9 8.0-12.9 13.0-18.9 19.0-23.9 >24.0 Total N 2 8 2 0 0 0 12 NNE I 0 0 0 0 2 NE 1 0 I 0 0 0 2 ENE 0 0 0 0 0 1 E 2 2 0 0 0 0 4 ESE 0 0 0 0 0 SE 6 16 0 0 0 23 SSE 38 37 0 0 0 76 s 29 31 0 0 0 0 60 SSW 40 39 0 0 0 0 79 SW 55 4 0 0 0 0 59 WSW 36 2 0 0 0 0 38 w 17 4 0 0 0 0 21 WNW 19 0 0 0 0 0 19 NW 22 3 0 0 0 26 NNW 4 4 0 0 0 9
Total 273 152 7 0 0 0 432
Calm Hours not Included above for: Total Period AU Hours 0 Variable Direction Hours for: Total Period AU Hours 0 Invalid Hours for: Total Period All Hours 0 Number of Valid Hours for this Table: Total Period All Hours 432 Total Hours for the Period: 2208
Page 5 of 8 Site: VC Report Printed On: 03/21/2022 14:29 Joint Frequency Distribution
Hours at Each Wind Speed and Direction
Total Period All Hours Period of Record= 07/01/2021 01 :00 - 10/01/2021 00:00
Elevation: Speed: SPlOTI Direction: DRlOTl Lapse: DT61Tl
Stability Class: F Delta Temperature Moderately Stable
Wind Speed (mph)
Wind Direction 0.8-3.9 4.0-7.9 8.0-12.9 13.0-18.9 19.0-23.9 >24.0 Total N 0 0 0 0 0 0 0 NNE 0 0 0 0 0 0 0 NE 0 0 0 0 0 0 0 ENE 0 0 0 0 0 0 0 E 0 0 0 0 0 0 0 ESE 0 0 0 0 0 0 0 SE 2 4 0 0 0 0 6 SSE 13 13 0 0 0 0 26 s 19 6 0 0 0 0 25 SSW 22 7 0 0 0 0 29 SW 34 3 0 0 0 0 37 WSW 20 0 0 0 0 0 20 w 16 0 0 0 0 17 WNW 10 0 0 0 0 11 NW 7 0 0 0 0 8 NNW 4 0 0 0 0 5
Total 144 40 0 0 0 0 184
Calm Hours not Included above for: Total Period AU Hours 0 Variable Direction Hours for: Total Period AU Hours 0 Invalid Hours for: Total Period All Hours 0 Number of Valid Hours for this Table: Total Period All Hours 184 Total Hours for the Period: 2208
Page 6 of 8 Site: VC Report Printed On: 03/21/2022 14:29 Joint Frequency Distribution
Hours at Each Wind Speed and Direction
Total Period All Hours Period of Record = 07/01/2021 01:00 - 10/01/2021 00:00
Elevation: Speed: SPlOTl Direction: DRlOTl Lapse: DT61TI
Stability Class: G Delta Temperature Extremely Stable
Wind Speed (mph)
Wind Direction 0.8-3.9 4.0-7.9 8.0-12.9 13.0-18.9 19.0-23.9 >24.0 Total N 0 0 0 0 0 0 0 NNE 0 0 0 0 0 0 0 NE 0 0 0 0 0 0 0 ENE 0 0 0 0 0 0 0 E 0 0 0 0 0 0 0 ESE 0 0 0 0 0 0 0 SE 0 0 0 0 0 0 0 SSE 2 1 0 0 0 0 3 s 6 0 0 0 0 7 SSW 17 1 0 0 0 19 SW 28 6 0 0 0 0 34 WSW 19 0 0 0 0 0 19 w 18 0 0 0 0 0 18 WNW 6 0 0 0 0 0 6 NW 2 0 0 0 0 0 2 NNW 0 0 0 0 0 0 0
Total 98 9 0 0 0 108
Calm Hours not Included above for: Total Period All Hours 0 Variable Direction Hours for: Total Period All Hours 0 Invalid Hours for: Total Period All Hours 0 Number of Valid Hours for this Table: Total Period All Hours 108 Total Hours for the Period: 2208
Page 7 of8 Site: VC Report Printed On: 03/21/2022 14:29 Joint Frequency Distribution
Hours at Each Wind Speed and Direction
Total Period All Hours Period of Record = 07/01/2021 01 :00 - 10/01/2021 00:00
Elevation: Speed: SPlOTl Direction: DRlOTl Lapse: DT61Tl
Stability Class: ALL Delta Temperature
Wind Speed (mph)
Wind Direction 0.8-3.9 4.0-7.9 8.0-12.9 13.0-18.9 19.0-23.9 >24.0 Total N 49 52 20 6 2 130 NNE 30 51 36 11 2 131 NE 18 65 45 4 0 133 ENE 5 44 40 2 0 0 91 E 11 47 33 0 0 0 91 ESE 10 17 4 0 0 0 31 SE 20 56 8 0 0 0 84 SSE 68 117 7 0 0 193 s 72 112 27 2 0 0 213 SSW 100 195 17 0 0 313 SW 181 111 2 0 0 0 294 WSW 126 39 0 0 0 0 165 w 89 27 0 0 0 117 WNW 72 12 0 0 0 85 NW 54 19 5 0 0 0 78 NNW 26 27 3 2 0 59
Total 931 991 249 29 6 2 2208
Calm Hours not Included above for: Total Period All Hours 0 Variable Direction Hours for: Total Period All Hours 0 Invalid Hours for: Total Period All Hours 0 Number of Valid Hours for this Table: Total Period All Hours 2208 Total Hours for the Period: 2208
Page 8 of 8 Site: VC Report Printed On: 03/21/2022 14:30 Joint Frequency Distribution
Hours at Each Wind Speed and Direction
Total Period All Hours Period of Record = 10/01/2021 01 :00 - 01/01/2022 00:00
Elevation: Speed: SPlOTl Direction: DRIOTl Lapse: DT61Tl
Stability Class: A Delta Temperature Extremely Unstable
Wind Speed (mph)
Wind Direction 0.8-3.9 4.0-7.9 8.0-12.9 13.0-18.9 19.0-23.9 >24.0 Total N 5 15 14 15 11 0 60 NNE 3 IO 15 13 7 1 49 NE 0 15 30 14 0 0 59 ENE 2 3 4 0 0 0 9 E 1 6 1 0 0 0 8 ESE 0 4 2 0 0 0 6 SE 0 1 0 0 0 0 I SSE 0 0 0 0 0 0 0 s 0 2 0 0 0 0 2 SSW 0 7 8 3 0 0 18 SW 3 40 6 0 0 0 49 WSW 5 23 8 0 0 0 36 w 2 10 2 0 0 0 14 WNW 4 IO 0 0 0 0 14 NW 4 14 3 0 0 0 21 NNW 11 II 7 4 l 0 34
Total 40 171 100 49 19 380
Calm Hours not Included above for: Total Period All Hours 0 Variable Direction Hours for: Total Period All Hours 0 Invalid Hours for: Total Period All Hours 1 Number of Valid Hours for this Table: Total Period All Hours 380 Total Hours for the Period: 2208
Page 1 of 8 Site: VC Report Printed On: 03/21/2022 14:30 Joint Frequency Distribution
Hours at Each Wind Speed and Direction
Total Period All Hours Period of Record = 10/01/2021 01:00 - 01/01/2022 00:00
Elevation: Speed: SPlOTI Direction: DRIOTI Lapse: DT61Tl
Stability Class: B Delta Temperature Moderately Unstable
Wind Speed (mph)
Wind Direction 0.8-3.9 4.0-7.9 8.0-12.9 13.0-18.9 19.0-23.9 >24.0 Total N 8 5 11 4 0 29 NNE 2 6 14 14 2 0 38 NE 3 7 27 13 0 0 50 ENE 0 9 11 0 0 21 E 2 9 2 0 0 0 13 ESE l 5 3 0 0 0 9 SE 0 0 0 0 0 0 0 SSE 0 0 0 0 0 s 2 3 0 0 0 0 5 SSW 0 2 4 1 0 0 7 SW 0 15 0 0 0 16 WSW 4 12 0 0 0 0 16 w 4 4 I 0 0 0 9 WNW 5 3 0 0 0 0 8 NW 4 6 0 0 0 0 10 NNW 5 8 5 3 0 0 21
Total 34 97 73 43 6 0 253
Calm Hours not Included above for: Total Period All Hours 0 Variable Direction Hours for: Total Period All Hours 0 Invalid Hours for: Total Period All Hours I Number of Valid Hours for this Table: Total Period All Hours 253 Total Hours for the Period: 2208
Page 2 of 8 Site: VC Report Printed On: 03/21/2022 14:30 Joint Frequency Distribution
Hours at Each Wind Speed and Direction
Total Period All Hours Period of Record = 10/01/2021 01 :00 - 01/01/2022 00:00
Elevation: Speed: SPlOTI Direction: DRIOTI Lapse: DT61Tl
Stability Class: C Delta Temperature Slightly Unstable
Wind Speed (mph)
Wind Direction 0.8-3.9 4.0-7.9 8.0-12.9 13.0-18.9 19.0-23.9 >24.0 Total N 2 4 4 5 0 0 15 NNE 2 4 11 4 0 0 21 NE 0 8 23 4 0 0 35 ENE 3 6 23 0 0 0 32 E 0 10 3 0 0 0 13 ESE 3 0 0 0 5 SE 2 2 2 0 0 0 6 SSE 0 4 0 0 0 0 4 s 0 8 0 0 0 0 8 SSW 2 7 2 0 0 0 11 SW 4 21 0 0 0 26 WSW 7 4 l 0 0 0 12 w 3 0 0 0 0 4 WNW 5 2 0 0 0 0 7 NW 1 5 0 0 0 0 6 NNW 2 2 5 0 0 10
Total 34 91 72 18 0 0 215
Calm Hours not Included above for: Total Period All Hours 0 Variable Direction Hours for: Total Period All Hours 0 Invalid Hours for: Total Period All Hours Number of Valid Hours for this Table: Total Period All Hours 215 Total Hours for the Period: 2208
Page 3 of 8 Site: VC Report Printed On: 03/21/2022 14:30 Joint Frequency Distribution
Hours at Each Wind Speed and Direction
Total Period All Hours Period of Record = 10/01/2021 01:00 - 01/01/2022 00:00
Elevation: Speed: SPlOTl Direction: DRIOTI Lapse: DT61Tl
Stability Class: D Delta Temperature Neutral
Wind Speed (mph)
Wind Direction 0.8-3.9 4.0-7.9 8.0-12.9 13.0-18.9 19.0-23.9 >24.0 Total N 10 8 3 1 0 0 22 NNE 5 6 3 1 0 0 15 NE 8 19 11 5 0 0 43 ENE 3 12 3 0 0 0 18 E 2 31 21 0 0 0 54 ESE 3 8 3 0 0 0 14 SE 2 9 0 0 0 12 SSE 5 12 0 0 0 0 17 s 6 25 6 0 0 0 37 SSW 10 64 5 0 0 0 79 SW 17 58 1 0 0 0 76 WSW 30 28 1 0 0 0 59 w 23 14 0 0 0 0 37 WNW 10 6 0 0 0 0 16 NW 7 9 2 0 0 0 18 NNW 3 5 5 2 0 0 15
Total 144 314 65 9 0 0 532
Calm Hours not Included above for: Total Period All Hours 0 Variable Direction Hours for: Total Period All Hours 0 Invalid Hours for: Total Period All Hours Number of Valid Hours for this Table: Total Period All Hours 532 Total Hours for the Period: 2208
Page 4 of 8 Site: VC Report Printed On: 03/21/2022 14:30
Joint Frequency Distribution
Hours at Each Wind Speed and Direction
Total Period All Hours Period of Record = 10/01/2021 01:00 - 01/01/2022 00:00
Elevation: Speed: SPlOTl Direction: DRlOTl Lapse: DT61Tl
Stability Class: E Delta Temperature Slightly Stable
Wind Speed (mph)
Wind Direction 0.8-3.9 4.0-7.9 8.0-12.9 13.0-18.9 19.0-23.9 >24.0 Total N 10 5 0 0 0 0 15 NNE 6 2 1 0 0 0 9 NE 7 4 0 0 0 0 11 ENE 0 1 0 0 0 0 E 2 2 0 0 0 0 4 ESE 5 l 0 0 0 7 SE 5 5 0 0 0 0 10 SSE 10 8 0 0 0 0 18 s 11 29 0 0 0 0 40 SSW 17 35 0 0 0 53 SW 35 28 0 0 0 0 63 WSW 20 10 0 0 0 0 30 w 17 8 0 0 0 0 25 WNW 9 4 0 0 0 0 13 NW 5 9 0 0 0 0 14 NNW 5 4 2 0 0 0 11
Total 164 155 5 0 0 0 324
Calm Hours not Included above for: Total Period All Hours 0 Variable Direction Hours for: Total Period All Hours 0 Invalid Hours for: Total Period All Hours Number of Valid Hours for this Table: Total Period All Hours 324 Total Hours for the Period: 2208
Page 5 of 8 Site: VC Report Printed On: 03/21/2022 14:30 Joint Frequency Distribution
Hours at Each Wind Speed and Direction
Total Period All Hours Period of Record = 10/01/2021 01 :00 - 01/01/2022 00:00
Elevation: Speed: SPIOTI Direction: DRIOTI Lapse: DT61Tl
Stability Class: F Delta Temperature Moderately Stable
Wind Speed (mph)
Wind Direction 0.8-3.9 4.0-7.9 8.0-12.9 13.0-18.9 19.0-23.9 >24.0 Total N 4 2 0 0 0 0 6 NNE 0 3 0 0 0 0 3 NE 3 0 0 0 0 0 3 ENE 3 0 0 0 0 0 3 E 2 0 0 0 0 0 2 ESE 0 0 0 0 0 0 0 SE 5 4 0 0 0 0 9 SSE 6 8 0 0 0 0 14 s 23 28 0 0 0 0 51 SSW 27 12 0 0 0 0 39 SW 41 3 0 0 0 0 44 WSW 24 0 0 0 0 25 w 16 0 0 0 0 17 WNW 17 0 0 0 0 0 17 NW 6 3 0 0 0 0 9 NNW 2 0 0 0 0 0 2
Total 179 65 0 0 0 0 244
Calm Hours not Included above for: Total Period All Hours 0 Variable Direction Hours for: Total Period All Hours 0 Invalid Hours for: Total Period All Hours Number of Valid Hours for this Table: Total Period All Hours 244 Total Hours for the Period: 2208
Page 6 of 8 Site: VC Report Printed On: 03/21/2022 14:30 Joint Frequency Distribution
Hours at Each Wind Speed and Direction
Total Period All Hours Period of Record = 10/01/2021 01:00 - 01/01/2022 00:00
Elevation: Speed: SPIOTI Direction: DRIOTI Lapse: DT61Tl
Stability Class: G Delta Temperature Extremely Stable
Wind Speed (mph)
Wind Direction 0.8-3.9 4.0-7.9 8.0-12.9 13.0-18.9 19.0-23.9 >24.0 Total N 0 0 0 0 0 0 0 NNE 2 0 0 0 0 0 2 NE 0 0 0 0 0 I ENE 0 0 0 0 0 0 0 E 0 0 0 0 0 0, 0 ESE 3 0 0 0 0 0 3 SE 0 0 0 0 0 0 0 SSE 8 2 0 0 0 0 10 s 19 4 0 0 0 0 23 SSW 20 3 0 0 0 0 23 SW 57 3 0 0 0 0 60 WSW 65 0 0 0 0 0 65 w 34 2 0 0 0 0 36 WNW 27 I 0 0 0 0 28 NW 6 2 0 0 0 0 8 NNW 0 0 0 0 0 0 0
Total 242 17 0 0 0 0 259
Calm Hours not Included above for: Total Period All Hours 0 Variable Direction Hours for: Total Period All Hours 0 Invalid Hours for: Total Period All Hours Number of Valid Hours for this Table: Total Period All Hours 259 Total Hours for the Period: 2208
Page 7 of 8 Site: VC Report Printed On: 03/21/2022 14:30 Joint Frequency Distribution
Hours at Each Wind Speed and Direction
Total Period All Hours Period of Record = 10/01/2021 01:00 - 01/01/2022 00:00
Elevation: Speed: SPl0Tl Direction: DRlOTl Lapse: DT61Tl
Stability Class: ALL Delta Temperature
Wind Speed (mph)
Wind Direction 0.8-3.9 4.0-7.9 8.0-12.9 13.0-18.9 19.0-23.9 >24.0 Total N 32 42 26 32 15 0 147 NNE 20 31 44 32 9 1 137 NE 22 53 91 36 0 0 202 ENE 11 31 41 0 0 84 E 9 58 27 0 0 0 94 ESE 13 21 10 0 0 0 44 SE 14 21 3 0 0 0 38 SSE 30 34 0 0 0 0 64 s 61 99 6 0 0 0 166 SSW 76 130 20 4 0 0 230 SW 157 168 9 0 0 0 334 WSW 155 78 10 0 0 0 243 w 99 40 3 0 0 0 142 WNW 77 26 0 0 0 0 103 NW 33 48 5 0 0 0 86 NNW 28 30 20 14 0 93
Total 837 910 315 119 25 2207
Calm Hours not Included above for: Total Period All Hours 0 Variable Direction Hours for: Total Period AU Hours 0 Invalid Hours for: Total Period All Hours Number of Valid Hours for this Table: Total Period All Hours 2207 Total Hours for the Period: 2208
Page 8 of 8 Annual Summary Site: VC Report Printed On: 03/21/2022 14:12 Joint Frequency Distribution
Hours at Each Wind Speed and Direction
Total Period All Hours Period of Record = 01/01/2021 01:00 - 01/01/2022 00:00
Elevation: Speed: SPIOTI Direction: DRIOTl Lapse: DT61TI
Stability Class: A Delta Temperature Extremely Unstable
Wind Speed (mph)
Wind Direction 0.8-3.9 4.0-7.9 8.0-12.9 13.0-18.9 19.0-23.9 >24.0 Total N 54 80 34 24 13 206 NNE 37 74 34 20 7 I 173 NE 20 79 70 29 0 0 198 ENE 3 37 32 4 0 0 76 E 2 20 13 1 0 0 36 ESE 3 9 4 0 0 0 16 SE 0 4 2 0 0 0 6 SSE 1 2 6 0 0 0 9 s 2 11 16 3 0 0 32 SSW 31 27 3 0 63 SW 22 135 28 I 0 0 186 WSW 33 120 24 0 0 0 177 w 30 74 22 0 0 0 126 WNW 24 46 0 0 0 0 70 NW 18 39 26 0 0 84 NNW 30 43 17 11 2 0 103
Total 280 804 355 97 23 2 1561
Calm Hours not Included above for: Total Period All Hours Variable Direction Hours for: Total Period All Hours 0 Invalid Hours for: Total Period All Hours 114 Number of Valid Hours for this Table: Total Period All Hours 1561 Total Hours for the Period: 8760
Page 1 of 8 Site: VC Report Printed On: 03/21/2022 14:12 Joint Frequency Distribution
Hours at Each Wind Speed and Direction
Total Period All Hours Period of Record = 01/01/2021 01:00 - 01/01/2022 00:00
Elevation: Speed: SPlOTl Direction: DRIOTI Lapse: DT61Tl
Stability Class: B Delta Temperature Moderately Unstable
Wind Speed (mph)
Wind Direction 0.8-3.9 4.0-7.9 8.0-12.9 13.0-18.9 19.0-23.9 >24.0 Total N 22 30 19 23 6 101 NNE 12 25 50 51 5 0 143 NE 8 22 65 42 4 0 141 ENE 2 17 20 2 0 0 41 E 4 19 12 0 0 0 35 ESE 1 11 5 0 0 0 17 SE 3 3 3 0 0 0 9 SSE 2 19 7 0 0 0 28 s 4 20 14 1 0 0 39 SSW 3 39 13 3 2 0 60 SW 15 66 6 0 0 0 87 WSW 18 29 3 0 0 0 50 w 8 16 0 0 0 25 WNW 14 8 2 0 0 0 24 NW 18 14 3 0 0 0 35 NNW 18 17 14 8 2 0 59
Total 152 355 237 130 19 894
Calm Hours not Included above for: Total Period All Hours 1 Variable Direction Hours for: Total Period All Hours 0 Invalid Hours for: Total Period All Hours 114 Number of Valid Hours for this Table: Total Period All Hours 894 Total Hours for the Period: 8760
Page 2 of 8 Site: VC Report Printed On: 03/21/2022 14:12
Joint Frequency Distribution
Hours at Each Wind Speed and Direction
Total Period All Hours Period of Record = 01/01/2021 01:00 - 01/01/2022 00:00
Elevation: Speed: SPlOTI Direction: DRIOTI Lapse: DT61Tl
Stability Class: C Delta Temperature Slightly Unstable
Wind Speed (mph)
Wind Direction 0.8-3.9 4.0-7.9 8.0-12.9 13.0-18.9 19.0-23.9 >24.0 Total N 13 23 29 16 0 0 81 NNE 7 18 88 32 0 0 145 NE 1 37 114 24 2 0 178 ENE 4 24 70 IO 0 0 108 E 2 22 34 0 0 0 58 ESE 2 13 9 0 0 0 24 SE 6 24 6 0 0 0 36 SSE 3 40 3 2 0 0 48 s 3 37 23 0 0 0 63 SSW 7 50 11 0 0 69 SW 18 51 3 0 0 0 72 WSW 17 28 2 0 0 0 47 w IO 14 0 0 0 25 WNW 14 5 0 0 0 0 19 NW 6 13 3 0 0 0 22 NNW 7 18 5 10 0 0 40
Total 120 417 401 95 2 0 1035
Calm Hours not Included above for: Total Period AU Hours Variable Direction Hours for: Total Period All Hours 0 Invalid Hours for: Total Period All Hours 114 Number of Valid Hours for this Table: Total Period All Hours 1035 Total Hours for the Period: 8760
Page 3 of 8 Site: VC Report Printed On: 03/21/2022 14:12 Joint Frequency Distribution
Hours at Each Wind Speed and Direction
Total Period All Hours Period of Record = 01/01/2021 01 :00 - 01/01/2022 00:00
Elevation: Speed: SPl0TI Direction: DRlOTl Lapse: DT61TI
Stability Class: D Delta Temperature Neutral
Wind Speed (mph)
Wind Direction 0.8-3.9 4.0-7.9 8.0-12.9 13.0-18.9 19.0-23.9 >24.0 Total N 22 27 28 4 0 0 81 NNE 26 29 27 8 1 92 NE 16 67 65 13 3 0 164 ENE 15 87 57 6 0 0 165 E 12 131 71 0 0 0 214 ESE 13 41 7 0 0 0 61 SE 16 81 14 0 0 0 111 SSE 35 75 7 0 0 0 117 s 37 102 21 0 0 161 SSW 51 203 42 0 0 297 SW 87 151 10 0 0 0 248 WSW 80 99 6 0 0 0 185 w 78 54 0 0 0 133 WNW 51 27 3 0 0 0 81 NW 34 41 14 I 0 0 90 NNW 14 20 18 6 0 0 58
Total 587 1235 391 40 4 2258
Calm Hours not Included above for: Total Period All Hours Variable Direction Hours for: Total Period All Hours 0 Invalid Hours for: Total Period All Hours 114 Number of Valid Hours for this Table: Total Period All Hours 2258 Total Hours for the Period: 8760
Page 4 of 8 Site: VC Report Printed On: 03/21/2022 14: 12 Joint Frequency Distribution
Hours at Each Wind Speed and Direction
Total Period All Hours Period of Record = 01/01/2021 01 :00 - 01/01/2022 00:00
Elevation: Speed: SPIOTI Direction: DRlOTl Lapse: DT61Tl
Stability Class: E Delta Temperature Slightly Stable
Wind Speed (mph)
Wind Direction 0.8-3.9 4.0-7.9 8.0-12.9 13.0-18.9 19.0-23.9 >24.0 Total N 22 26 7 0 0 0 55 NNE 17 19 7 0 0 0 43 NE 15 17 5 0 0 0 37 ENE 5 18 2 0 0 0 25 E 11 25 2 0 0 0 38 ESE 13 14 0 0 0 28 SE 25 49 1 0 0 0 75 SSE 72 86 2 0 0 0 160 s 67 82 2 0 0 0 151 SSW 92 143 7 0 0 0 242 SW 149 68 0 0 0 218 WSW 112 35 0 0 0 0 147 w 69 32 0 0 0 102 WNW 57 14 0 0 0 0 71 NW 43 32 2 0 0 0 77 NNW 20 22 8 0 0 0 50
Total 789 682 48 0 0 0 1519
Calm Hours not Included above for: Total Period All Hours 1 Variable Direction Hours for: Total Period All Hours 0 Invalid Hours for: Total Period All Hours 114 Number of Valid Hours for this Table: Total Period All Hours 1519 Total Hours for the Period: 8760
Page 5 of 8 Site: VC Report Printed On: 03/21/2022 14:12
Joint Frequency Distribution
Hours at Each Wind Speed and Direction
Total Period All Hours Period of Record = 01/01/2021 01:00 - 01/01/2022 00:00
Elevation: Speed: SPIOT! Direction: DRIOTl Lapse: DT61Tl
Stability Class: F Delta Temperature Moderately Stable
Wind Speed (mph)
Wind Direction 0.8-3.9 4.0-7.9 8.0-12.9 13.0-18.9 19.0-23.9 >24.0 Total N 12 4 0 0 0 0 16 NNE 4 3 0 0 0 0 7 NE 4 0 0 0 0 0 4 ENE 5 0 0 0 0 0 5 E 4 0 0 0 0 0 4 ESE 6 0 0 0 0 0 6 SE 17 24 0 0 0 0 41 SSE 46 42 0 0 0 0 88 s 56 62 0 0 0 0 118 SSW 78 40 0 0 0 0 118 SW 113 16 0 0 0 0 129 WSW 69 13 0 0 0 0 82 w 49 6 0 0 0 0 55 WNW 49 2 0 0 0 0 51 NW 29 IO 0 0 0 0 39 NNW 7 7 0 0 0 0 14
Total 548 229 0 0 0 0 777
Calm Hours not Included above for: Total Period All Hours Variable Direction Hours for: Total Period All Hours 0 Invalid Hours for: Total Period All Hours 114 Number of Valid Hours for this Table: Total Period All Hours 777 Total Hours for the Period: 8760
Page 6 of 8 Site: VC Report Printed On: 03/21/2022 14:12 Joint Frequency Distribution
Hours at Each Wind Speed and Direction
Total Period All Hours Period of Record = 01/01/2021 01:00 - 01/01/2022 00:00
Elevation: Speed: SPIOTI Direction: DRIOTI Lapse: DT61Tl
Stability Class: G Delta Temperature Extremely Stable
Wind Speed (mph)
Wind Direction 0.8-3.9 4.0-7.9 8.0-12.9 13.0-18.9 19.0-23.9 >24.0 Total N 1 1 0 0 0 0 2 NNE 5 0 0 0 0 0 5 NE 2 0 0 0 0 0 2 ENE 0 0 0 0 0 0 0 E 0 0 0 0 0 0 0 ESE 3 0 0 0 0 0 3 SE 2 0 0 0 0 3 SSE 23 12 0 0 0 0 35 s 45 12 0 0 0 0 57 SSW 59 8 1 0 0 0 68 SW 112 17 0 0 0 0 129 WSW 126 6 0 0 0 0 132 w 83 5 0 0 0 0 88 WNW 48 0 0 0 0 49 NW 19 5 0 0 0 0 24 NNW 4 0 0 0 0 0 4
Total 532 68 0 0 0 601
Calm Hours not Included above for: Total Period AU Hours 1 Variable Direction Hours for: Total Period All Hours 0 Invalid Hours for: Total Period All Hours 114 Number of Valid Hours for this Table: Total Period All Hours 601 Total Hours for the Period: 8760
Page 7 of 8 Site: VC Report Printed On: 03/21/2022 14:12 Joint Frequency Distribution
Hours at Each Wind Speed and Direction
Total Period All Hours Period of Record = 01/01/2021 01:00 - 01/01/2022 00:00
Elevation: Speed: SPlOTI Direction: DRl0Tl Lapse: DT61Tl
Stability Class: ALL Delta Temperature
Wind Speed (mph)
Wind Direction 0.8-3.9 4.0-7.9 8.0-12.9 13.0-18.9 19.0-23.9 >24.0 Total N 146 191 117 67 19 2 542 NNE 108 168 206 111 13 2 608 NE 66 222 319 108 9 0 724 ENE 34 183 181 22 0 0 420 E 35 217 132 0 0 385 ESE 41 88 26 0 0 0 155 SE 69 186 26 0 0 0 281 SSE 182 276 25 2 0 0 485 s 214 326 76 5 0 0 621 SSW 291 514 101 8 3 0 917 SW 516 504 48 1 0 0 1069 WSW 455 330 35 0 0 0 820 w 327 201 26 0 0 0 554 WNW 257 103 5 0 0 0 365 NW 167 154 48 2 0 0 371 NNW 100 127 62 35 4 0 328
Total 3008 3790 1433 362 48 4 8645
Calm Hours not Included above for: Total Period AU Hours 1 Variable Direction Hours for: Total Period AU Hours 0 Invalid Hours for: Total Period All Hours 114 Number of Valid Hours for this Table: Total Period All Hours 8645 Total Hours for the Period: 8760
Page 8 of8 ENCLOSURE B
ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT
JANUARY - DECEMBER 2021
VIRGIL C. SUMMER NUCLEAR STATION
Errata/Correction to Previous ARERR ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT JANUARY - DECEMBER 2020 Virgil C. Summer Nuclear Station
TABLE 1
Gaseous Effluents-Summation of All Releases
Type of Effluent Units Qtr 1 Qtr2 Qtr3 Qtr4 Error%
A. Fission & Activation Gases
- 1. Total Release Curies 0.00E+00 8.28E-01 1.45E-02 0.00E+00 2.00E+01
- 2. Average Release Rate for Period µCi/sec 0.00E+00 1.0SE-01 1.83E-03 0.00E+00
- 3. Percent of Applicable Limit % 0.00E+00 2.00E-02 3.23E-05 0.00E+00
B. Iodines
- 1. Total lodine-131 Curies 0.00E+00 3.32E-06 0.00E+00 0.00E+00 2.50E+01
- 2. Average Release Rate for Period µCi/sec 0.00E+00 4.23E-07 0.00E+00 0.00E+00
- 3. Percent of Applicable Limit % 0.00E+00 3.32E-04 0.00E+00 0.00E+00
C. Particulates
- 1. Total Particulates (Half-lives> 8 days) Curies 9.49E-06 0.00E+00 3.47E-06 1.0SE-05 2.50E+01
- 2. Average Release Rate for Period µCi/sec 1.21E-06 0.00E+00 4.36E-07 1.32E-06
- 3. Percent of Applicable Limit % 0.00E+00 0.00E+00 0.00E+00 0.00E+00
- 4. Gross Alpha Activity Curies 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00
D. Tritium
- 1. Total Release Curies 0.00E+00 1.82E+00 0.00E+00 0.00E+00 2.00E+01
- 2. Average Release Rate for Period µCi/sec 0.00E+00 2.32E-01 0.00E+00 0.00E+00
- 3. Percent of Applicable Limit % 0.00E+00 1.38E-02 0.00E+00 0.00E+00
E. Carbon-14
- 1. Total Release Curies 2.26E+00 2.26E+00 2.28E+00 2.28E+00 NIA
- 2. Average Release Rate for Period µCi/sec 2.87E-01 2.87E-01 2.87E-01 2.87E-01