Text

Annual Radioactive Effluent Release Report
	ML23118A021
Person / Time
Site:	Braidwood
Issue date:	12/31/2022
From:	; Constellation Energy Generation
To:	; Office of Nuclear Reactor Regulation
Shared Package
ML23118A019	List: BW230023, Annual Radioactive Effluent Release Report; ML23118A020;
References
	BW230023
	Download: ML23118A021 (1)
	v • d • e

Braidwood Nuclear Power Station Annual Radioactive Effluent Release Report (ARERR)

UNIT 1 AND UNIT 2 (Docket Numbers 50-456 and 50-457)

ISFSI (Docket Number 72-73)

BRAIDWOOD NUCLEAR POWER STATION RADIOACTIVE EFFLUENT RELEASE REPORT FOR 2022 UNIT 1, UNIT 2 and ISFSI (Docket Numbers 50-456, 50-457 and 72-73)

DOCUMENT INDEX

Preface..................................................................................................................................................... 2

Introduction............................................................................................................................................... 9

A Supplemental Information........................................................................................................... 9

B. Gaseous Effluents....................................................................................................................... Error!

Bookmark not defined.

C. Liquid Effluents............................................................................................................................ 16

D. Radiological Impact on Man........................................................................................................ 16

E. Meteorological Data.................................................................................................................... 18

F. Offsite Ambient Radiation Measurements................................................................................... 19

G. Radioactive Solid Waste Disposal.............................................................................................. 19

APPENDIX A: EFFLUENT AND WASTE DISPOSAL

SUMMARY

.......................................................... 20

APPENDIX B: SOLID WASTE AND IRRADIATED FUEL SHIPMENTS................................................. 30

APPENDIX C: WIND DIRECTION AND STABILITY CLASSES.............................................................. 37

APPENDIX D: ERRATA........................................................................................................................... 81

Page 1 of 95 BRAIDWOOD NUCLEAR POWER STATION RADIOACTIVE EFFLUENT RELEASE REPORT FOR 2022 UNIT 1, UNIT 2 and ISFSI (Docket Numbers 50-456, 50-457 and 72-73)

Preface

The following sections of the preface are meant to help define key concepts, provide clarity, and give context to the readers of this report.

Annual Reports

The Nuclear Regulatory Commission (NRG) is the federal agency who has the role to protect public health and safety through the development of regulations governing nuclear power reactors and ensuring their compliance. As part of the many commitments Nuclear Power Plants have to the NRG to ensure this safety, they provide two reports annually to specifically address how the station's operation impacts the environment of local communities. The NRG then reviews these reports and makes them available to the public. The names of the reports are the Annual Radioactive Effluent Release Report (ARERR) and the Annual Radiological Environmental Operating Report (AREOR).

The ARERR reports the results of the sampling from the effluent release paths at the station analyzed for radioactivity. An effluent is a liquid or gaseous waste containing plant-related radioactive material emitted at the boundary of the facility.

The AREOR reports the results of the samples obtained in the environment surrounding the station.

Environmental samples include air, water, vegetation, and other sample types that are identified as potential pathways radioactivity can reach humans.

Graphic 1. Examples of Gaseous and Liquid Effluent Pathways

Graphic 1 demonstrates some potential exposure pathways from Braidwood Nuclear Power Station. The ARERR and AREOR together ensure Nuclear Power Plants are operating in a manner that is within established regulatory commitments meant to adequately protect the public.

Page 2 of 95 BRAIDWOOD NUCLEAR POWER STATION RADIOACTIVE EFFLUENT RELEASE REPORT FOR 2022 UNIT 1, UNIT 2 and ISFSI (Docket Numbers 50-456, 50-457 and 72-73)

Understanding Radiation

Generally radiation is defined as emitted energy in the form of waves or particles. If radiation has enough energy to displace electrons from an atom it is termed "ionizing", otherwise it is "non-ionizing". Non-Ionizing radiation includes light, heat given off from a stove, radiowaves and microwaves. Ionizing radiation occurs in atoms, particles too small for the eye to see. So, what are atoms and how does radiation come from them?

Graphic 2. Types of Radiation, from NASA Hubb/esite The Electromagnetic Spectrum Waveiongth ln metHs 0 ;*

10--> -12

Aboutthe size of:

f Akimic Buildings Grains. Pro1ozoans Baci&ria Molecules Atoms of sugar nuclei

An atom is the smallest part of an element that maintains the characteristics of that element. Atoms are made up of three parts: protons, neutrons, and electrons.

Graphic

3. Structure of an Atom

Neutron

Electron

The number of protons in an atom determines the element. For example, a hydrogen atom will always have one proton while an oxygen atom will always have eight protons. The protons are clustered with the neutrons forming the nucleus at the center of the atom. Orbiting around the nucleus are the relatively small electrons.

Isotopes are atoms that have the same number of protons but different numbers of neutrons. Different isotopes of an element will all have the same chemical properties and many isotopes are radioactive while other isotopes are not radioactive. A radioactive isotope can emit radiation because it contains excess energy in its nucleus.

Radioactive atoms and isotopes are also referred to as radionuclides and radioisotopes.

Page 3 of 95 BRAIDWOOD NUCLEAR POWER STATION RADIOACTIVE EFFLUENT RELEASE REPORT FOR 2022 UNIT 1, UNIT 2 and ISFSI (Docket Numbers 50-456, 50-457 and 72-73)

There are two basic ways that radionuclides are produced at a nuclear power plant. The first is fission, which creates radionucides that are called fission products. Fission occurs when a very large atom, such as uranium-235 (U-235) or plutonium-239 (Pu-239), absorbs a neutron into its nucleus making the atom unstable. The unstable atom can then split into smaller atoms. When fission occurs there is a large amount of energy released, in the form of heat. A nuclear power plant uses the heat generated to boil water that spins turbines to produce electricity.

The second way a radionuclide is produced at a nuclear power plant is through a process called activation.

Radionuclides produced in this method are termed activation products. Pure water that passes over the fissioning atoms is used to cool the reactor and also produce steam to turn the turbines. Although this water is considered to be very pure, there are always some contaminants within the water from material used in the plant's construction and operation. These contaminants are exposed to the fission process and may become activation products. The atoms in the water itself can also become activated and create radionuclides.

Over time, radioactive atoms will reach a stable state and no longer be radioactive. To do this they must release their excess energy. This release of excess energy is called radioactive decay. The time it takes for a radionuclide to become stable is measured in units called half-lives. A half-life is the amount of time it takes for half of the original radioactivity to decay. Each radionuclide has a specific half-life. Some half-lives can be very long and measured in years while others may be very short and measured in seconds.

Graphic 4. Radioactive Decay Half-Life Half-life

1000

800 The amount of time it takes for half of the original radioactivity to decay Activity 600

400

200

0 1 half-life 2 half-lives 3 half-lives 4 half-lives

In the annual reports you will see both man made and naturally ocurring radionuclides listed, for example potassium-40 (K-40, natural) and cobalt-60 (Co-60, man-made). We are mostly concerned about man-made radionuclides because they can be produced as by-products when generating electricity at a nuclear power plant. It is important to note that there are also other ways man-made radionuclides are produced, such as detonating nuclear weapons. Weapons testing has deposited some of the same man-made radionuclides into the environment as those generated by nuclear power, and some are still present today because of long half lives.

Page 4 of 95 BRAIDWOOD NUCLEAR POWER STATION RADIOACTIVE EFFLUENT RELEASE REPORT FOR 2022 UNIT 1, UNIT 2 and ISFSI (Docket Numbers 50-456, 50-457 and 72-73)

Measuring Radiation

There are four different but interrelated units for measuring radioactivity, exposure, absorbed dose, and dose equivalent. Together, they are used to scientifically report the amount of radiation and its effects on humans.

Radioactivity refers to the amount of ionizing radiation released by a material. The units of measure for radioactivity used within the AREOR and AR ERR are the Curie (Ci). Small fractions of the Ci often have a prefix, such as the microcurie (µCi), which means 1/1,000,000 of a Curie.

Exposure describes the amount of radiation traveling through the air. The units of measure for exposure used within the AREOR and ARERR are the Roentgen (R). Traditionally direct radiation monitors placed around the site are measured milliRoentgen (mR), 1/1,000 of one R.

Absorbed dose describes the amount of radiation absorbed by an object or person. The units of measure for absorbed dose used within the AREOR and ARERR are the rad. Noble gas air doses are reported by the site are measured in millirad (mrad), 1/1,000 of one rad.

Dose equivalent (or effective dose) combines the amount of radiation absorbed and the health effects of that type of radiation. The units used within the AREOR and ARERR are the Roentgen equivalent man (rem). Regulations require doses to the whole body, specific organ, and direct radiation to be reported in millirem (mrem), 1/1,000 of one rem.

Page 5 of 95 BRAIDWOOD NUCLEAR POWER STATION RADIOACTIVE EFFLUENT RELEASE REPORT FOR 2022 UNIT 1, UNIT 2 and ISFSI (Docket Numbers 50-456, 50-457 and 72-73)

Sources of Radiation

People are exposed to radiation every day of their lives and have been since the dawn of mankind. Some of this radiation is naturally occurring while some is man-made. There are many factors that will determine the amount of radiation individuals will be exposed to such as where they live, medical treatments, etc. The average person in the United States is exposed to approximately 620 mrem each year. Half of this exposure, 310 mrem, comes from natural sources and the other half, 310 mrem, from man-made sources. Graphic 5 shows what the typical sources of radiation are for an individual over a calendar year:

Graphic 5. Sources of Radiation Exposure in the U.S., from NCRP Report No. 160

Sources of Radiation Exposure in the U.S.

Cosmic (Space)

5°/o Terrestrial (Soil}

3% Industrial and Occupational Internal~ 5% <0.1%

Consumer - 2%

Nuclear Medicine 12%

!';::'ii:',! * ** * ~310 millirem Natural Sources~ 50% (0.31 rem) - Manmade Sources* 50%.... 310 mlllirem (0.31 rem)

Source: NCRP Report No.160{20-091 Full report i.s available on the NCRP website at www.~KRPonlince.org

The radiation from a nuclear power plant is included in the chart as part of the "Industrial and Occupational" fraction, <0.1 %. The largest natural source of radiation is from radon, because radon gas travels in the air we breathe. Perhaps you know someone who had a CT scan at a hospital to check his or her bones, brain, or heart. CT scans are included in the chart as "Medical Procedures" which make up the next largest fraction.

Graphic 6 on the following page shows some of the common doses humans receive from radiation every year.

Page 6 of 95 BRAIDWOOD NUCLEAR POWER STATION RADIOACTIVE EFFLUENT RELEASE REPORT FOR 2022 UNIT 1, UNIT 2 and ISFSI (Docket Numbers 50-456, 50-457 and 72-73)

Graphic 6.Relative Doses from Radiation Sources, from EPA Radiation Doses and Sources RELATIVE DOSES FROM RADIATION SOURCES All doses from the National Council on Radiation Protection & Measurements, Report No. 1150 {unless otherwise denoted)

Whole body CT 1,000 milllrem

{single procedure)

Upper Gastrolntutlnal 1<*ray exam w1th ftuoroscopy 1500 mllllrem (single procedure}

Radon In average U.S. home 228 mllllrem (annual)

HudCT 200 milllrem *

(single procedure)

Cosmli; radiation living In Denver (high elevation) app..-o,dmately 80 mlflirem (annual)

Mammogram 42 millirem (single procedure} Cosmic radiation living at SN From lCRP 2007 level (low elevation) approximately 30 milllrem (annual)

Radiation In the body 29 millirem (annual)

Terrestrial radioactivity 21 millirem (annual)

Chutx-ray 10 mlllirem (single procedure)

Living nNr a nudear power station < 1 millirem

(annual) mrem

Page 7 of 95 BRAIDWOOD NUCLEAR POWER STATION RADIOACTIVE EFFLUENT RELEASE REPORT FOR 2022 UNIT 1, UNIT 2 and ISFSI (Docket Numbers 50-456, 50-457 and 72-73)

Radiation Risk

Current science suggests there is some risk from any exposure to radiation. However, it is very hard to tell whether cancers or deaths can be attributed to very low doses of radiation or by something else. U.S. radiation protection standards are based on the premise that any radiation exposure carries some risk.

The following graph is an example of one study that tries to relate risk from many different factors. This graph represents risk as "Days of Lost Life Expectancy". All the categories are averaged over the entire population except Male Smokers, Female Smokers, and individuals that are overweight. Those risks are only for people that fall into those categories. The category for Nuclear Power is a government estimate based on all radioactivity releases from nuclear power, including accidents and wastes.

Graphic 7. Days of Lost Life Expectancy, Adapted from the Journal of American Physicians and Surgeons Volume 8 Number 2 Summer 2003 Days of lost life Expectancy

Smokint; -

Hearl

\\rnoking \\Norncn

Air Pciiiut!oP I

Radon I I ood; I

Hurricanes and Tornadoes Lightning

Nuclear Po\\.ver

0 '>00 JSOO ;mo lOOO

Days of lost life Expectancy

Hurricanes Tornadoes

Nucle2r I

0 02 G.8 L, 1 4 18

Page 8 of 95 BRAIDWOOD NUCLEAR POWER STATION RADIOACTIVE EFFLUENT RELEASE REPORT FOR 2022 UNIT 1, UNIT 2 and ISFSI (Docket Numbers 50-456, 50-457 and 72-73)

Introduction

This report quantifies the radioactive gaseous, liquid, solid radioactive waste (radwaste) releases, and summarizes the local meteorological data for the period from January 01, 2022 through December 31, 2022.

This report has been prepared utilizing the methodology and parameters specified in the calculation of offsite doses resulting from radioactive gaseous and liquid effluents found in Braidwood's Offsite Dose Calculation Manual (ODCM). It has been formatted consistent with Exelon Procedure CY-AA-170-2000 "ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT" as well as the requirements specified in Regulatory Guide 1.21 Revision 1, "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."

The quantity of radioactive material released from Braidwood Nuclear Power Plant was determined from in house and vendor laboratory analysis of continuous inline sampling media and batch sample media from all ODCM specified effluent pathways. These pathways include continuous releases from the Unit 1 and Unit 2 Station Vent Stack, Condensate Polisher Sump, Waste Water Treatment, and Circulating Water Slowdown.

The ODCM specified effluent pathways also include batch releases from the Unit 1 and Unit 2 Primary Containments, Waste Gas Decay Tanks, and Liquid Radwaste Batch Release Tanks.

The volume and quantity of radioactive waste shipped offsite from Braidwood Nuclear Power Plant for processing and disposal was determined from data maintained in the radwaste shipping database. Radwaste processed for shipment was in accordance with Exelon procedure RW-AA-100, "PROCESS CONTROL PROGRAM FOR RADIOACTIVE WASTES" and consistent with the UFSAR.

Meteorological data was obtained from the 320-foot meteorological tower located on the Braidwood Station premises.

A. Supplemental Information

1. Regulatory Limits

a. Fission and Activation Gases:

Dose Rate

1) Less than 500 mrem/year to the whole body (instantaneous limit, per site).

2) Less than 3,000 mrem/year to the skin (instantaneous limit, per site).

Dose Gamma Radiation

1) Less than or equal to 5 mrad/quarter (per unit).

2) Less than or equal to 10 mrad/year (per unit).

Dose Beta Radiation

1) Less than or equal to 10 mrad/quarter (per unit).

2) Less than or equal to 20 mrad/year (per unit).

b. Iodine: (summed with particulate, see below)

c. Particulates with half-lives > 8 days:

Dose Rate

1) Less than 1,500 mrem/year to any organ (instantaneous limit, per site).

Page 9 of 95 BRAIDWOOD NUCLEAR POWER STATION RADIOACTIVE EFFLUENT RELEASE REPORT FOR 2022 UNIT 1, UNIT 2 and ISFSI (Docket Numbers 50-456, 50-457 and 72-73)

Dose

1) Less than or equal to 7.5 mrem/quarter to any organ (per unit).

2) Less than or equal to 15 mrem/year to any organ (per unit).

d. Liquid Effluents

Dose

1) Less than or equal to 1.5 mrem to the whole body during any calendar quarter (per unit).

2) Less than or equal to 5 mrem to any organ during any calendar quarter (per unit).

3) Less than or equal to 3 mrem to the whole body during any calendar year (per unit).

4) Less than or equal to 10 mrem to any organ during any calendar year (per unit).

2. Effluent Concentration Limits

a. Fission and Activation Gases: 1 0CFR20 Appendix B Table 2

b. Iodine: 10CFR20 Appendix B Table 2

c. Particulates: 10CFR20 Appendix B Table 2

d. Liquid Effluents: 10 X 10CFR20 Appendix B Table 2

3. Average Energy

The ODCM limits the dose equivalent rates due to the release of noble gases to less than or equal to 500 mrem/yr to the total body, and less than or equal to 3,000 mrem/yr to the skin. Therefore, the average beta and gamma energies (E) for gaseous effluents as described in Regulatory Guide 1.21 are not applicable.

4. Measurements and Approximations of Total Radioactivity

a. Fission and activation gases:

Before being discharged, containment batch releases are analyzed for noble gas via gamma spectroscopy. Gaseous decay tanks are analyzed for noble gases before being discharged via gamma spectroscopy. Released activity is normally calculated using volume of release, which is determined by purge flow rate, times the duration of the discharge.

The Auxiliary Building ventilation exhaust system is continually monitored for radioactive iodines (radioiodines) and particulates. These samples are obtained every seven days and analyzed via gamma spectroscopy.

Noble gas samples are obtained and analyzed weekly by gamma spectroscopy. The average flow at the release points and nuclide specific activity concentrations are used to calculate the activity released.

Volumes and activities of effluents discharged from systems that are common to both units are divided between both units.

Page 10 of 95 BRAIDWOOD NUCLEAR POWER STATION RADIOACTIVE EFFLUENT RELEASE REPORT FOR 2022 UNIT 1, UNIT 2 and ISFSI (Docket Numbers 50-456, 50-457 and 72-73)

b. Iodines:

Radioiodines in the Auxiliary Building ventilation exhaust system are continually being collected via activated charcoal cartridges in the diverted sample process flow. The iodine cartridges are pulled weekly and analyzed via gamma spectroscopy. Radioiodine concentrations greater than the lower limit of detection (LLD) are multiplied by the volume of air discharged during the sampling timeframe.

Radioiodines are analyzed in liquid effluent streams through performance of batch release tank grab samples and weekly liquid effluent composite samples. The analyses are performed via gamma spectroscopy of the liquid samples.

Volumes and activities of effluents discharged from systems that are common to both units are divided between both units. Effluents that are unit specific are assigned to the appropriate unit.

c. Particulate, half-lives> 8 days:

Particulates in the Auxiliary Building ventilation exhaust system are continually being collected via filter media in the diverted sample process flow. Particulate filter media is pulled weekly and analyzed via gamma spectroscopy. Particulate concentrations greater than LLD are multiplied by the volume of air discharged during the sampling timeframe. A composite sample is created from 3 month's particulate sample media for Sr-89/90, Fe-55, Ni-63, and gross alpha analysis by an offsite vendor. The vendor supplied data is utilized in conjunction with the volume of air released through the Auxiliary Building ventilation to quantify Sr-89/90, Fe-55, Ni-63, and gross alpha releases.

Volumes and activities of effluents discharged from systems that are common to both units are divided between both units. Effluents that are unit specific are assigned to the appropriate unit.

d. Tritium:

Before being discharged, containment batch releases are analyzed for tritium via a liquid scintillation counter (LSC). Tritium is sampled using a flow-through bubbler system. Released activity is calculated using volume of release, which is determined by purge flow rate multiplied by the duration of the discharge.

The Auxiliary Building ventilation exhaust system is monitored for tritium using a flow-through bubbler system. Tritium is sampled every seven days and analyzed by LSC.

The secondary sides of both units contain tritium. Minimal amounts of tritium are continually released to the atmosphere from secondary components through packing leaks, tank vents, the main condenser, etc. Bounding calculations have been performed to show that large leaks (1000 gallons/day (gpd)) for extended periods (1 month) at normal secondary tritium concentrations would provide an insignificant increase (1.00E-5 mrem) in offsite dose.

e. Gross alpha

Gross alpha is analyzed in both the gaseous and liquid effluent pathways. Weekly gaseous particulate media is composited for offsite vendor analysis. Gross alpha activity greater than vendor LLD values are assigned to the applicable timeframe and gaseous volume released. Liquid effluent gross alpha analysis is performed through compositing monthly discharges and gas flow proportional counting.

Page 11 of 95 BRAIDWOOD NUCLEAR POWER STATION RADIOACTIVE EFFLUENT RELEASE REPORT FOR 2022 UNIT 1, UNIT 2 and ISFSI (Docket Numbers 50-456, 50-457 and 72-73)

f. Carbon-14

Carbon-14 (C-14) is assessed in continuous gaseous effluents using Electric Power Research lnstitute's (EPRI) industry accepted production mechanism and production rate study 1021106. C-14 production is a function of each unit's full power operation and gaseous volume released. C-14 is not evaluated through laboratory sample analysis.

g. Liquid effluents:

Liquid effluents are categorized as either batch release or continuous release. All liquid releases are analyzed for principal gamma emitters, radioiodines, dissolved and entrained gases, gross alpha, and tritium onsite via gamma spectroscopy, gas flow proportional counting, or liquid scintillation, as appropriate. An offsite laboratory analyzes liquid composites for Sr-89/90, Fe-55 and Ni-63. Vendor results are applied to the applicable volume of liquids discharged during the timeframe. Volumes and activities of effluents discharged from systems or locations are divided between both units.

h. Estimated Total Error Present

Procedure CY-AA-170-2100, Estimated Errors of Effluent Measurements provides the methodology to obtain an overall estimate of the error associated with radioactive effluents.

Estimated total error is calculated periodically and communicated as part of Appendix A Effluent and Waste Disposal Summary.

i. Lower Limit of Detection (LLD)

Samples are analyzed such that the Offsite Dose Calculation Manual (ODCM) LLD requirements are met. When a nuclide is not detected during the quarter then <LLD is reported. The ODCM required lower limit of detection for airborne and liquid releases are as follows:

Table 4.i ODCM Effluent LLD Values Airborne: LLD Gross Aloha Sr-89 Sr-90 1.00E-11 uCi/cc H-3 1.00E-07 µCi/cc 1-131 in Charcoal Samples 1.00E-12 µCi/cc 1-133 in Charcoal Samples 1.00E-1 0 µCi/cc Principal Gamma Emitters (Mn-54, Fe-59, Co-58, Co-60, Zn-65, Mo-99, Cs-1.00E-04 µCi/cc 134, Cs-137, 1-131, Ce-141, Ce-144) in Grab Samples Principal Gamma Emitters (Mn-54, Fe-59, Co-58, Co-60, Zn-65, Mo-99, 1.00E-11 µCi/cc Cs-134, Cs-137, 1-131, Ce-141, Ce-144) in Particulate Samples Noble Gas (Kr-87, Kr-88, Xe-133, Xe-133m, Xe-135, Xe-138), Gross Beta 1.00E-06 µCi/cc or Gamma

Page 12 of 95 BRAIDWOOD NUCLEAR POWER STATION RADIOACTIVE EFFLUENT RELEASE REPORT FOR 2022 UNIT 1, UNIT 2 and ISFSI (Docket Numbers 50-456, 50-457 and 72-73)

Table 4.i ODCM Effluent LLD Values (continued}

Liquid: LLD Principal Gamma Emitters except Ce-144 (Mn-54, Fe-59, Co-58, Co-5.00E-07 µCi/ml 60 Zn-65 Mo-99 Cs-134 Cs-137 Ce-141)

Ce-144 5.00E-06 µCi/ml 1-131 1.00E-06 µCi/ml Entrained Gases (Kr-87, Kr-88, Xe-133, Xe-133m, Xe-135, Xe-138) 1.00E-05 µCi/ml H-3 1.00E-05 µCi/ml Gross Alpha 1.00E-07 uCi/ml Sr-89, Sr-90 5.00E-08 µCi/ml Fe-55 1.00E-06 uCi/ml

This list does not mean that only these nuclides are considered, but this list is used to ensure acceptable detection standards. Braidwood tests and maintains LLD records in accordance with procedure CY-AA-130-201 "Radiochemistry Quality Control."

5. Batch Releases

a. Liquid Batch Releases 1st Qtr 2nd Qtr 3rd Qtr 4th Qtr Annual

1. Total Number of Batch Releases 15 14 14 25 68

2. Total Time Period for Batch Releases (minutes) 2.80E+04 3.02E+04 8.17E+04 9.55E+04 2.36E+05

3. Maximum Time Period for a E+04 Batch Release (minutes) 5.05+03 7.32E+03 1.21E+04 8.20E+03 1.21

4. Average Time Period for a Batch Release (minutes) 1.87E+03 2.16E+03 5.84E+03 3.82E+03 3.46E+03

5. Minimum Time Period for a Batch Release (minutes) 2.29E+02 3.87E+02 8.50E+02 8.30E+01 8.30E+01

6. Average Stream Flow During Periods of Release 1.18E+07 1.09E+07 2.47E+06 3.04E+06 7.02E+06 of Effluent into a Flowing Stream (Liters/min) 1

b. Gaseous Batch Releases 1st Qtr 2nd Qtr 3rd Qtr 4 th Qtr Annual

1. Total Number of Batch 35 33 32 39 139 Releases

2. Total Time Period for 3.52E+04 5.70E+04 2.48E+04 1.04E+04 1.27E+05 Batch Releases (minutes)

3. Maximum Time Period for 2.28E+03 2.24E+03 2.31 E+03 1.59E+03 2.31 E+03 a Batch Release (minutes)

4. Average Time Period for 4.48E+01 5.42E+01 4.75E+01 8.42E+01 5.90E+01 a Batch Release (minutes)

5. Minimum Time Period for 2.20E+01 2.70E+01 2.50E+01 1.90E+01 1.90E+01 a Batch Release (minutes)

1 Kankakee River Flows obtained from US Geological Survey website from daily average flow data.

Page 13 of 95 BRAIDWOOD NUCLEAR POWER STATION RADIOACTIVE EFFLUENT RELEASE REPORT FOR 2022 UNIT 1, UNIT 2 and ISFSI (Docket Numbers 50-456, 50-457 and 72-73)

6. Abnormal Releases

There was one abnormal gaseous release that occurred in the 4th quarter 2022. Permit number G-20221019-1842-B was created to account for tritium release due to a 1A steam generator PORV lift during start up after A1R23. IR 04531005

7. Non-Routine, Planned Discharges

There were no non-routine, planned discharges in 2022.

8. Radioactive Waste Treatment System Changes

There were no changes to the gaseous radioactive waste treatment system, the ventilation exhaust treatment system, or the liquid radioactive waste treatment system in 2022.

9. Changes to the Annual Land Use Census

No major changes to the Annual Land Use Census in 2022. Performed on September 7, 2022.

10. Radioactive Effluent Monitoring Instrumentation out of service for more than 30 Days

a. Due to clearance order 00-CW-CWBDOOS-003 for CW Slowdown line inspections, 0PR01 J and 0PR90J were in RETS for greater than the required restoration time (14 days) as of 0800 on 06/18/2022. IR 04505297

b. 0RE-PR010 was inoperable for more than 30 days as of 1706 on 06/28/2022 due to clearance order 00-CW-CWBDOOS-003 for CW Slowdown line inspections. IR 04506772

c. Loop CW032 was inoperable for more than 30 days as of 1800 on 07/01/2022 due to clearance order 00-CW-CWBDOOS-003 for CW Slowdown line inspections. IR 04508087

d. 0PR01J and 0PR90J were in RETS for greater than the required restoration time (14 days) as of 0900 on 10/03/2022. This was due to in-progress liquid release package (L-22-044) being written for the monitors being out of service and all required additional actions and samples being completed for the monitors being out of service. IR 04525724

11. Revisions to the ODCM

No revisions to ODCM occurred in 2022.

12. Independent Spent Fuel Storage Installation (ISFSI)

An Independent Spent Fuel Storage Installation (ISFSI) was placed in service at Braidwood Station in 2011. The ISFSI is a closed system and the only exposure would be due to direct radiation, which is measured by Optically Stimulated Luminescent Dosimetry (OSLO). In 2022 the dose to the nearest resident from the ISFSI was estimated to be 2.50E-01 mrem. This estimate was determined using environmental dosimeters from the Radiological Environmental Monitoring Program and extrapolating the dose from the ISFSI environmental dosimeters.

Page 14 of 95 BRAIDWOOD NUCLEAR POWER STATION RADIOACTIVE EFFLUENT RELEASE REPORT FOR 2022 UNIT 1, UNIT 2 and ISFSI (Docket Numbers 50-456, 50-457 and 72-73)

13. ERRATA (Appendix D)

There were no errors to previous reports identified in 2022.

14. Sampling and Instrumentation Issues

a. On 4/28/22 the CWBD compositor was checked per the weekly checklist for running status and it was found with the Program Complete in the status window. This is an indication that the compositor lost power at some point and was then restored but the program does not automatically resume sampling. The compositor was checked on 4/25/22 at 1155 when the weekly composite sample was obtained, and the program was Running. Sometime after 4/25/22 1155 when the compositor was last checked the compositor must have lost power. On 4/26/22 per operations log in eSOMs power was restored at the RSH. Chemistry personnel was unaware that power was lost at the RSH and no compensatory samples were obtained for the duration of 4/25/22 (after compositor check) to 4/28/22.

The liquid release L-22-23 of 0WX01T was secured on 4/25/22 at 13:00. IR 04496339

b. The CWBD ODCM compositor was restarted on 7/11/22 following restoration of CWBD and the compositor was functioning as expected. On 7/15/22 chemistry technician identified that there was no power to the receptacle that the compositor was plugged into but there was power to the CWBD house still. An extension cord was utilized to plug the compositor into another receptacle to restore power and sampling capabilities to the ODCM compositor once again. Approximately 2 liters of water was observed to be in the compositor jug. It is unclear exactly when the power to the receptacle was lost. IR 04511153

c. On 7/25/22 the CWBD compositor was collected for its weekly sample. The technician noticed that there was a smaller volume of water in the compositor than expected. The technician checked the program and noticed that the status read Program Complete. The technician reviewed the compositor log and it showed Program Complete on 7/20/22. Therefore, there were no samples being collected from 7/20/22 -7/25/22 according to the compositor log. The loss of power was originally thought to be the receptacle that it was plugged into and an extension cord was utilized to plug into a different outlet in the CWBD house. IR 04513016

d. During the release (G-22-090) Unit 2 received an alarm on 2-5-C7 for "Cnmt Vent Isolation" SER pt#

0016. There was a containment release in progress and the containment vent isolation valves 2VQ005A & C auto closed as expected and 2VQ05C tripped. The alarm was due to a high alarm received on the 2AR11J radiation monitor. This was a spike that returned to normal status within seconds of the high alarm. The Containment Vent Isolation alarm was reset per the BwAR 2-5-C7.

The alarm occurred about 2 minutes into the release and a flow rate on 2FI-VQ009 was not obtained prior to isolation. 2AR12J rad levels were normal at the time. IR 04488227

e. While conducting a review on 2/16/22 it was identified that on February 5th, the HD-28 air sampler that samples the intake of the Aux FW Diesel pumps went out of calibration. 1 B & 2B DDAF pumps were both run on 2/10/22. Air sampler was swapped out with a calibrated one and the one in question was calibrated with all calibration checks passing successfully and no adjustments were needed. Upon successful calibration checks of the HD-28 air sampler the time in question has been validated. IR 04478615

Page 15 of 95 BRAIDWOOD NUCLEAR POWER STATION RADIOACTIVE EFFLUENT RELEASE REPORT FOR 2022 UNIT 1, UNIT 2 and ISFSI (Docket Numbers 50-456, 50-457 and 72-73)

B. Gaseous Effluents

Gaseous radioactive releases for 2022 captured in Tables 1A, 18-1, and 1 B-2 in Appendix A for Units 1 and 2 combined. Radioactive noble gases released for the timeframe totaled 2.67E+00 Curies.

Releases of all radioiodines, halogens, and particulates totaled 3.21 E-03 Curies. Gaseous tritium releases totaled 1.34E+02 Curies. Gaseous carbon-14 was calculated to total 8.33E+00 Curies. No gross alpha was detected in gaseous effluents.

C. Liquid Effluents

Liquid radioactive releases for 2022 are captured in Tables 2A, 2B-1, and 2B-2 in Appendix A for Units 1 and Unit 2 combined. Sixty-eight (68) liquid batch releases occurred during the reporting period. The continuous and batch release discharges contained a total of 2.27E+03 Curies of tritium, 1.07E-02 Curies of fission and activation products and 2.01 E-05 Curies of dissolved or entrained gases. No gross alpha was detected in the liquid effluents.

D. Radiological Impact on Man

1. Dose to Members of the Public at or Beyond Site Boundary

Per ODCM Chapter 6.1 the Annual Radioactive Effluent Release Report shall include an assessment of radiation doses to the hypothetically highest exposed MEMBER OF THE PUBLIC from reactor releases, ISFSI and other nearby uranium fuel cycle sources. This includes doses from primary effluent pathways and direct radiation for the previous calendar year. The ODCM does not require population doses to be calculated. For purposes of calculation, the following assumptions were made per the ODCM:

Long term annual average meteorology X/Q and D/Q and actual gaseous effluent releases were used.

Gamma air dose, Beta air dose, Total Body and Skin doses were attributed to noble gas releases.

Critical organ and age group dose attributed to iodine, particulate, carbon-14 and tritium releases.

A 0. 7 shielding factor was assumed to account for shielding due to occupancy of structures

Doses, Design Objective Limit, and Dose Limit comparisons reported combined for the site for both Unit 1 and Unit 2 together.

Dosimetry measurements obtained from the highest station values in the Radiological Environmental Monitoring Program were used to calculate dose to the nearest residence from the Independent Spent Fuel Storage Installation (ISFSI). The dose measured at the station was extrapolated to the residence location.

The highest doses from the critical organ and critical age group for each release pathway was summed and added to the net dosimetry measurement from nearest residence to the ISFSI for 40CFR 190 and 10CFR72.104 dose compliance.

Evaluation of 40CFR 190 and 10CFR72.104 dose is used to demonstrate compliance to 1 0CFR 20 and satisfy station RETS and Technical Specifications.

a. Gaseous Releases

Calculated total body dose was 2.28E-01 mrem. The critical age-organ was the child-bone and the organ dose was 1.0SE+00 mrem.

Page 16 of 95 BRAIDWOOD NUCLEAR POWER STATION RADIOACTIVE EFFLUENT RELEASE REPORT FOR 2022 UNIT 1, UNIT 2 and ISFSI (Docket Numbers 50-456, 50-457 and 72-73)

b. Liquid Releases

Calculated total body dose was 2.59E-01 mrem. The critical age-organ was the child-GI-LU and the organ dose was 2.60E-01 mrem.

c. 40CFR 190 and 10CFR72.104 Compliance

The Braidwood ODCM defines the total dose for the uranium fuel cycle as the sum of doses due to radioactivity in airborne and liquid effluents and the doses due to direct radiation from contained sources at the nuclear power station (ODCM A.4.2 Total Dose, Equation A-24). The total dose, vror, in the unrestricted area to a member of the public due to plant operations is given by:

Where:

vror Total Dose to Member of Public [mrem]

Total off-site dose to a member of public due to plant operations.

vEx Total External Total Body Dose [mrem]

Total body dose due to external exposure to noble gases, N-16 skyshine and on-site storage facilities.

D~~q Liquid Effluent Dose [mrem]

Dose due to liquid effluents to age group a and organj. The age group and organ with the highest dose from liquid effluents is used.

v:_rc Non-Noble Gaseous Effluent Dose [mrem]Dose due to non-noble gaseous effluents to age group a and organ j. The age group and organ with the highest dose from non noble gas effluents is used.

The maximum calculated dose to a real individual would not exceed 7.37E-01 mrem (total body),

1.59E+00 mrem (organ), or 7.36E-01 mrem (thyroid).

Page 17 of 95 BRAIDWOOD NUCLEAR POWER STATION RADIOACTIVE EFFLUENT RELEASE REPORT FOR 2022 UNIT 1, UNIT 2 and ISFSI (Docket Numbers 50-456, 50-457 and 72-73)

Table D.1 Summary of Gaseous and Liquid Effluent Doses to Members of the Public at the Highest Dose Receptors vs 10 CFRS0 Design Objectives Design Maximum Individual Applicable Estimated Age %of Objective Noble Gas Dose Dose Group Applicable Limit Unit Limit (per year, combined)

Nearest Residence Gamma Air Dose 9.36E-04 All 4.68E-03 20 mrad Nearest Residence Beta Air Dose 3.32E-04 All 8.30E-04 40 mrad Nearest Residence Total Body 8.89E-04 All 8.89E-03 10 mrem Nearest Residence Skin 1.31E-03 All 4.37E-03 30 mrem

Non-Noble Gas Nearest Residence Bone 1.0SE+00 Child 3.60E+00 30 mrem

Liquid Nearest Residence Total Body 2.59E-01 Child 4.32E+00 6 mrem Nearest Residence GI-LLI 2.60E-01 Child 1.30E+00 20 mrem

Table D.2 Summary of Doses to Members of the Public at the Highest Dose Receptors for 40CFR190 and 10CFR72.104 Compliance

Non-Noble Liquid External % of Highest Dose Receptors Gas Direct Total Applicable Limit Unit Effluents Radiation Limit

Total Body Dose 2.28E-01 2.59E-01 2.50E-1 7.37E-01 2.95E+00 25 mrem Organ Dose 1.08E+00 2.60E-01 2.50E-1 1.59E+00 6.36E+00 25 mrem Thyroid Dose 2.28E-01 2.58E-01 2.50E-1 7.36E-01 9.81 E-01 75 mrem

E Meteorological Data

The Braidwood Station meteorological monitoring program produced 52,496 hours0.00574 days 0.138 hours 8.201058e-4 weeks 1.88728e-4 months of valid data out of a possible 52,560 parameter hours during 2022 (365 days x 24 hour2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months s/day x 6 measured priority parameters),

which represents an overall data recovery rate of 99.9%. Priority parameters are all parameters except dew point temperature and precipitation. For the year, winds measured at 34 ft. most frequently came from the West-Northwest (11.22%) and fell into the 3.6 - 7.5 mph wind speed class (36.76%). Calms (wind speeds at or below the sensor threshold) were measured 0.01 % of the time and speeds greater than 24.5 mph were measured 0.15% of the time. Stability based on the 199 - 30 ft. differential temperature most frequently fell into the neutral classification (49.79%).

Appendix C contains the Joint Frequency Distribution tables from the Meteorological Data collected in 2022.

Page 18 of 95 BRAIDWOOD NUCLEAR POWER STATION RADIOACTIVE EFFLUENT RELEASE REPORT FOR 2022 UNIT 1, UNIT 2 and ISFSI (Docket Numbers 50-456, 50-457 and 72-73)

F. Offsite Ambient Radiation Measurements

Review of the Braidwood Optically Stimulated Luminescent Dosimetry (OSLO) data showed statistical increases above background at only locations related to the ISFSI pad. A dose evaluation was performed taking the highest readings and extrapolating dose to the nearest resident. The dose to the resident was estimated to be 2.50E-1 mrem in 2022.

G. Radioactive Solid Waste Disposal

Radioactive wastes shipped offsite are captured in the table titled, "Solid Wastes Shipped Offsite for Burial or Disposal (Not irradiated fuel)." Approximately 2. 7 4E+02 cubic meters of solid waste were shipped offsite containing approximately 1.31 E+02 Curies during the 2022 reporting period. Appendix B contains tables and detailed information about the Solid Waste Disposal program.

Page 19 of 95 BRAIDWOOD NUCLEAR POWER STATION RADIOACTIVE EFFLUENT RELEASE REPORT FOR 2022 UNIT 1, UNIT 2 and ISFSI (Docket Numbers 50-456, 50-457 and 72-73)

APPENDIX A: EFFLUENT AND WASTE DISPOSAL

SUMMARY

Page 20 of 95 BRAIDWOOD NUCLEAR POWER STATION RADIOACTIVE EFFLUENT RELEASE REPORT FOR 2022 UNIT 1, UNIT 2 and ISFSI (Docket Numbers 50-456, 50-457 and 72-73)

TABLE 1A GASEOUS EFFLUENTS- - SUMMATION OF ALL RELEASES UNIT 1 AND UNIT 2

Unit 1st Qtr 2nd Qtr 3rd Qtr 4th Qtr Annual Est. Total Error%

A. Fission and Activation Gas Releases

1. Total Release Activity Ci 7.81 E-01 1.25E+00 6.07E-01 3.52E-02 2.67E+00 7.59E+00 I

2. Average Release Rate ~tCi/sec 1.00E-01 1.59E-01 7.63E-02 4.43E-03 8.47E-02

3. Percent of ODCM Limit - % 2.71 E-03 4.36-03 2.08E-03 2.13E-04 4.68E-03 gamma

4. Percent of ODCM Limit - % 4.78E-04 7.70E-04 3.71 E-04 4.37E-05 8.30E-04 beta

B. Iodine 131 Releases

1. Total lodine-131 Ci 0.00E+00 0.00+00 0.00E+00 1.51 E-09 1.51 E-09 3.32E+01 I

2. Average Release Rate µCi/sec N/A N/A N/A 1.90E-10 4.80E-11

3. Percent of ODCM Limit1 % N/A N/A N/A 1.77E+00 3.60E+00

C. Particulate(> 8-day half-life) Releases

1. Particulates with half-life > Ci <LLD <LLD <LLD <LLD <LLD 1.98E+01 8 days I

2. Average Release Rate µCi/sec <N/A <N/A <N/A <N/A <N/A

3. Percent of ODCM Limit1 % <N/A <N/A <N/A <N/A <N/A

D. Tritium Releases

1. Total Release Activity Ci 4.56E+01 4.68E+01 2.73E+01 1.46E+01 1.34E+02 8.07E+00 I

2. Average Release Rate µCi/sec 5.86E+00 5.95E+00 3.44E+00 1.84E+00 4.26E+00

3. Percent of ODCM Limit11 % 1.84E+00 1.69E+00 1.89E+00 1.77E+00 3.60E+00

E. Gross Alpha Releases

1. Total Release Activity Ci <LLD <LLD <LLD <LLD <LLD 1.98E+01 I

2. Average Release Rate µCi/sec N/A N/A N/A N/A N/A

3. Percent of ODCM limit1 % N/A N/A N/A N/A N/A

F. Carbon-14 Releases

1. Total Release Activity Ci 2.13E+00 1.96E+00 2.19E+00 2.04E+00 8.33E+00

2. Average Release Rate µCi/sec 2.74E-01 2.49E-01 2.76E-01 2.57E-01 2.64E-01

3. Percent of ODCM limit1 % 1.84E+00 1.69E+00 1.89E+00 1.77E+00 3.60E+00 Note: ODCM LLD threshold values are included in Table 4.i of this report.

Note: The ODCM Limit is a dose-based limit combined for Iodines, Particulate, Tritium and C-14.

1 Combined Limit per 1 0CFR50 Appendix I for Organ Dose Due to Specified Non-Noble Gas Radionuclides.

21 of 95 RADIOACTIVE BRAIDWOOD NUCLEAR POWER STATION EFFLUENT RELEASE REPORT FOR 2022 UNIT 1, UNIT 2 and ISFSI (Docket Numbers 50-456, 50-457 and 72-73)

GASEOUS EFFLUENTS - MIXED MODE RELEASES TABLE 1 B CONTINUOUS MODE UNIT 1 AND UNIT 2

Nuclides Released Continuous Mode A. Fission Gases Unit Quarter 1 Quarter 2 Quarter 3 Quarter 4 Total Ar-41 Ci <LLD <LLD <LLD <LLD <LLD Kr-85 Ci <LLD <LLD <LLD <LLD <LLD Kr-87 Ci <LLD <LLD <LLD <LLD <LLD Kr-88 Ci <LLD <LLD <LLD <LLD <LLD Xe-131 m Ci <LLD <LLD <LLD <LLD <LLD Xe-133 Ci <LLD <LLD <LLD <LLD <LLD Xe-133m Ci <LLD <LLD <LLD <LLD <LLD Xe-135 Ci <LLD <LLD <LLD <LLD <LLD Xe-138 Ci <LLD <LLD <LLD <LLD <LLD Total for Period Ci <LLD <LLD <LLD <LLD <LLD

B. Iodines / Halogens Unit Quarter 1 Quarter 2 Quarter 3 Quarter4 Total Br-82 Ci 8.00E-05 1.41 E-04 4.10E-05 <LLD 2.62E-04 1-131 Ci <LLD <LLD <LLD <LLD <LLD 1-132 Ci <LLD <LLD <LLD <LLD <LLD 1-133 Ci <LLD <LLD <LLD <LLD <LLD 1-134 Ci <LLD <LLD <LLD <LLD <LLD Total for Period Ci 8.00E-05 1.41E-04 4.10E-05 <LLD 2.62E-04

C. Particulates Unit Quarter 1 Quarter 2 Quarter 3 Quarter 4 Total Mn-54 Ci <LLD <LLD <LLD <LLD <LLD Co-57 Ci <LLD <LLD <LLD <LLD <LLD Co-58 Ci <LLD <LLD <LLD <LLD <LLD Fe-59 Ci <LLD <LLD <LLD <LLD <LLD Co-60 Ci <LLD <LLD <LLD <LLD <LLD Zn-65 Ci <LLD <LLD <LLD <LLD <LLD Sr-89 Ci <LLD <LLD <LLD <LLD <LLD Sr-90 Ci <LLD <LLD <LLD <LLD <LLD Mo-99 Ci <LLD <LLD <LLD <LLD <LLD Cs-134 Ci <LLD <LLD <LLD <LLD <LLD Cs-137 Ci <LLD <LLD <LLD <LLD <LLD Ba-140 Ci <LLD <LLD <LLD <LLD <LLD Total for Period Ci <LLD <LLD <LLD <LLD <LLD

TABLE 18-1 (Cont.)

22 of 95 BRAIDWOOD NUCLEAR POWER STATION RADIOACTIVE EFFLUENT RELEASE REPORT FOR 2022 UNIT 1, UNIT 2 and ISFSI (Docket Numbers 50-456, 50-457 and 72-73)

GASEOUS EFFLUENTS - MIXED MODE RELEASES - CONTINUOUS MODE UNIT 1 AND UNIT 2 Nuclides Released Continuous Mode C. Tritium Unit Quarter 1 Quarter 2 Quarter 3 Quarter 4 Total Ci 3.23E+01 2.88E+01 2.13E+01 1.36E+01 9.61 E+01

D. Gross Alpha Unit Quarter 1 Quarter 2 Quarter 3 Quarter 4 Total Ci <LLD <LLD <LLD <LLD <LLD

E. Carbon-14 Unit Quarter 1 Quarter 2 Quarter3 Quarter 4 Total Ci 2.13E+00 1.96E+00 2.19E+00 2.04E+00 8.33E+00

23 of 95 BRAIDWOOD NUCLEAR POWER STATION RADIOACTIVE EFFLUENT RELEASE REPORT FOR 2022 UNIT 1, UNIT 2 and ISFSI (Docket Numbers 50-456, 50-457 and 72-73)

TABLE 1B-2 GASEOUS EFFLUENTS - MIXED MODE RELEASES - BATCH MODE UNIT 1 AND UNIT 2

~des Released Batch Mode A. Fission Gases Unit Quarter 1 Quarter 2 Quarter 3 Quarter4 Total Ar-41 Ci 8.34E-01 1.34E+00 6.39E-01 6.40E-02 2.88E+00 Kr-85 Ci <LLD <LLD <LLD <LLD <LLD Kr-85m Ci <LLD <LLD <LLD <LLD <LLD Kr-87 Ci <LLD <LLD <LLD <LLD <LLD Kr-88 Ci <LLD <LLD <LLD <LLD <LLD Xe-131 m Ci <LLD <LLD <LLD <LLD <LLD Xe-133 Ci 1.46E-03 <LLD 3.23E-02 3.53E-03 6.91 E-02 Xe-133m Ci <LLD <LLD <LLD <LLD <LLD Xe-135 Ci <LLD <LLD <LLD 1.35E-03 1.35E-03 Xe-135m Ci <LLD <LLD <LLD <LLD <LLD Xe-138 Ci <LLD <LLD <LLD <LLD <LLD Total for Period Ci 8.36E-01 1.34E-00 6.71 E-01 1.01 E-01 2.95E+00

B. Iodines / Halogens Unit Quarter 1 Quarter 2 Quarter 3 Quarter 4 Total Br-80 Ci 7.98E-04 1.50E-03 3.03E-04 6.55E-06 2.61 E-03 Br-82 Ci 9.55E-05 1.60E-04 8.28E-05 1.16E-05 3.50E-04 1-131 Ci <LLD <LLD <LLD 1.51 E-09 1.51 E-09 1-132 Ci 4.76E-09 2.85E-06 9.07E-09 7.36E-08 2.93E-06 1-133 Ci 2.25E-09 1.69E-08 3.28E-09 9.37E-09 3.18E-08 1-135 Ci <LLD <LLD <LLD <LLD <LLD Total for Period Ci 8.93E-04 1.67E-03 3.86E-04 1.82E-05 2.96E-03

C. Particulates Unit Quarter 1 Quarter 2 Quarter 3 Quarter 4 Total Mn-54 Ci <LLD <LLD <LLD <LLD <LLD Co-57 Ci <LLD <LLD <LLD <LLD <LLD Co-58 Ci <LLD <LLD <LLD <LLD <LLD Fe-59 Ci <LLD <LLD <LLD <LLD <LLD Co-60 Ci <LLD <LLD <LLD <LLD <LLD Zn-65 Ci <LLD <LLD <LLD <LLD <LLD Sr-89 Ci <LLD <LLD <LLD <LLD <LLD Sr-90 Ci <LLD <LLD <LLD <LLD <LLD Mo-99 Ci <LLD <LLD <LLD <LLD <LLD Cs-134 Ci <LLD <LLD <LLD <LLD <LLD Cs-137 Ci <LLD <LLD <LLD <LLD <LLD

24 of 95 BRAIDWOOD NUCLEAR POWER STATION RADIOACTIVE EFFLUENT RELEASE REPORT FOR 2022 UNIT 1, UNIT 2 and ISFSI (Docket Numbers 50-456, 50-457 and 72-73)

TABLE 1 B-2 (Cont.)

GASEOUS EFFLUENTS - MIXED MODE RELEASES - BATCH MODE UNIT 1 AND UNIT 2 Nuclides Released Batch Mode C. Particulates (Cont.) Unit Quarter 1 Quarter 2 Quarter 3 Quarter 4 Total Ba-140 Ci <LLD <LLD <LLD <LLD <LLD La-140 Ci <LLD <LLD <LLD <LLD <LLD Total for Period Ci <LLD <LLD <LLD <LLD <LLD

D. Tritium Unit Quarter 1 Quarter 2 Quarter 3 Quarter 4 Total Ci 1.32E+01 1.80E+01 5.99E+00 9.72E-01 3.82E+01

E. Gross Alpha Unit Quarter 1 Quarter 2 Quarter 3 Quarter 4 Total Ci <LLD <LLD <LLD <LLD <LLD

F. Carbon-14 Unit Quarter 1 Quarter 2 Quarter 3 Quarter 4 Total Ci <LLD <LLD <LLD <LLD <LLD

25 of 95 BRAIDWOOD NUCLEAR POWER STATION RADIOACTIVE EFFLUENT RELEASE REPORT FOR 2022 UNIT 1, UNIT 2 and ISFSI (Docket Numbers 50-456, 50-457 and 72-73)

TABLE 2A LIQUID EFFLUENTS- - SUMMATION OF ALL RELEASES UNIT 1 AND UNIT 2

Est.

Unit 1st Qtr 2nd Qtr 3rd Qtr 4th Qtr Annual Total Error%

A. Fission and Activation Products

1. Total Release Ci 3.43E-03 6.62E-04 4.15E-03 2.47E-03 1.07E-02 2.64E+00I

2. Average Diluted Concentration ~tCi/mL 2.86E-10 1.22E-10 2.86E-10 1.33E-10 2.12E-10

3. Percent of applicable limit % * * * *

B. Tritium

1. Total Release Ci 4.99E+02 6.78E+02 3.08E+02 7.86E+02 2.27E+03 5.85E+00I

2. Average Diluted Concentration µCi/ml 4.16E-05 1.25E-04 2.12E-05 4.22E-05 4.50E-05

3. % of Limit (1 E-2 µCi/ml) % 4.16E-01 1.25E+00 2.12E-01 4.22E-01 4.50E-01

C. Dissolved Noble Gases

1. Total Release Ci <LLD <LLD <LLD <LLD <LLD 2.64E+00I

2. Average Diluted Concentration ~tCi/mL NIA NIA NIA NIA NIA

3. % of Limit (2E-4 µCi/ml) % NIA NIA NIA NIA NIA

D. Gross Alpha

1. Total Release Ci <LLD <LLD <LLD <LLD <LLD 1.47E+01 I

2. Average Diluted Concentration µCi/ml NIA NIA NIA NIA NIA

E. Volume of Waste Released Liters 4.77E+09 1.70E+09 4.80E+09 5.51E+09 1.68E+10 rior to dilution

IF. Volume of Dilution Water I Liters j 6.00E+09 I 2.70E+09 j 7.26E+09 I 9.30E+09 I 2.53E+10 I JG. Average Stream Flow 1 m 3ls I1.97E+02 j 1.81E+02 j 4.12E+01 j 5.07E+01 I 1.17E+02 I

Note: ODCM LLD threshold values are included in Table 4.i of this report.

This limit is equal to 10 times the concentration values in Appendix B, Table 2, Column 2 to 10CFR20.1001-20.2402, except for Dissolved Noble Gases. The limits for Dissolved Noble Gases are found the Braidwood Station ODCM, Table C-6 of ODCM Appendix C for Noble Gases.

1 Kankakee River Flows obtained from US Geological Survey website from daily average flow data.

26 of 95 RADIOACTIVE BRAIDWOOD EFFLUENT NUCLEAR POWER STATION RELEASE REPORT FOR 2022 UNIT 1, UNIT 2 and ISFSI (Docket Numbers 50-456, 50-457 and 72-73)

LIQUID EFFLUENTS - CONTINUOUS TABLE 2B-1 MODE UNIT 1 AND UNIT 2

Nuclides Released I Continuous Mode I A. Fission and Activation Unit Quarter 1 Quarter 2 Quarter 3 Quarter 4 Total Products Mn-54 Ci <LLD <LLD <LLD <LLD <LLD Fe-55 Ci <LLD <LLD <LLD <LLD <LLD Fe-59 Ci <LLD <LLD <LLD <LLD <LLD Co-58 Ci <LLD <LLD <LLD <LLD <LLD Co-60 Ci <LLD <LLD <LLD <LLD <LLD Zn-65 Ci <LLD <LLD <LLD <LLD <LLD Cs-134 Ci <LLD <LLD <LLD <LLD <LLD Cs-137 Ci <LLD <LLD <LLD <LLD <LLD Ce-141 Ci <LLD <LLD <LLD <LLD <LLD Ce-144 Ci <LLD <LLD <LLD <LLD <LLD Total for Period Ci <LLD <LLD <LLD <LLD <LLD

B. Tritium Unit Quarter 1 Quarter 2 Quarter3 Quarter 4 Total Ci 1.00E+01 6.98E+01 3.77E+01 7.64E+01 1.94E+02

C. Dissolved and Entrained Unit Quarter 1 Quarter 2 Quarter 3 Quarter 4 Total Gases Kr-87 Ci <LLD <LLD <LLD <LLD <LLD Kr-88 Ci <LLD <LLD <LLD <LLD <LLD Xe-133 Ci <LLD <LLD <LLD <LLD <LLD Xe-133m Ci <LLD <LLD <LLD <LLD <LLD Xe-135 Ci <LLD <LLD <LLD <LLD <LLD Xe-138 Ci <LLD <LLD <LLD <LLD <LLD Total for Period Ci <LLD <LLD <LLD <LLD <LLD

D. Gross Alpha Unit Quarter 1 Quarter 2 Quarter 3 Quarter4 Total Ci <LLD <LLD <LLD <LLD <LLD

27 of 95 BRAIDWOOD NUCLEAR POWER STATION RADIOACTIVE EFFLUENT RELEASE REPORT FOR 2022 UNIT 1, UNIT 2 and ISFSI (Docket Numbers 50-456, 50-457 and 72-73)

TABLE 2B-2 LIQUID EFFLUENTS - BATCH MODE UNIT 1 AND UNIT 2 Nuclides Released Batch Mode A. Fission and Activation Unit Quarter 1 Quarter 2 Quarter 3 Quarter 4 Total Products Cr-51 Ci 4.21 E-05 <LLD <LLD 1.34E-04 1.76E-04 Mn-54 Ci 7.91 E-05 9.17E-06 2.65E-04 6.97E-05 4.23E-04 Fe-55 Ci 1.43E-03 <LLD <LLD <LLD 1.43E-03 Fe-59 Ci <LLD <LLD <LLD <LLD <LLD Co-57 Ci 5.63E-06 <LLD 4.96E-06 <LLD 1.06E-05 Co-58 Ci 1.65E-03 3.92E-04 1.63E-04 2.35E-04 2.44E-03 Co-60 Ci 3.01 E-03 8.45E-04 6.12E-03 3.66E-03 1.36E-02 Ni-63 Ci <LLD <LLD <LLD <LLD <LLD Ni-65 Ci <LLD <LLD 1.37E-04 <LLD 1.37E-04 Zn-65 Ci <LLD <LLD 3.42E-05 <LLD 3.42E-05 Sr-89 Ci <LLD <LLD <LLD <LLD <LLD Sr-92 Ci 9.84E-07 <LLD <LLD 1.35E-05 1.45E-05 Zr-95 Ci <LLD <LLD <LLD <LLD <LLD Zr-97 Ci <LLD <LLD 2.30E-05 <LLD 2.30E-05 Nb-95 Ci <LLD <LLD 2.15E-05 <LLD 2.15E-05 Nb-97 Ci <LLD <LLD <LLD <LLD <LLD Mo-99 Ci <LLD <LLD <LLD <LLD <LLD Tc-99m Ci <LLD <LLD <LLD <LLD <LLD Ru-105 Ci <LLD <LLD 6.57E-05 2.62E-05 9.19E-05 Ru-106 Ci <LLD <LLD 3.24E-05 <LLD 3.24E-05 Ag-110m Ci 3.56E-04 7.73E-05 9.09E-04 6.25E-04 1.97E-03 Sn-113 Ci 5.45E-05 <LLD <LLD <LLD 5.45E-05 Sb-122 Ci <LLD <LLD <LLD <LLD <LLD Sb-124 Ci <LLD <LLD <LLD <LLD <LLD Sb-125 Ci 2.19E-04 <LLD 3.10E-04 1.73E-04 7.02E-04 Sb-126 Ci <LLD <LLD <LLD <LLD <LLD 1-134 Ci 1.85E-05 <LLD 1.16E-04 <LLD 1.34E-04 Cs-134 Ci <LLD <LLD <LLD <LLD <LLD Cs-136 Ci <LLD <LLD 1.32E-05 1.70E-06 1.49E-05 Cs-137 Ci <LLD <LLD <LLD <LLD <LLD La-140 Ci <LLD <LLD 3.60E-06 <LLD 3.60E-06 W-187 Ci <LLD <LLD 8.28E-05 <LLD 8.28E-05 Total for Period Ci 6.86E-03 1.32E-03 8.30E-03 4.93E-03 2.14E-02

28 of 95 BRAIDWOOD NUCLEAR POWER STATION RADIOACTIVE EFFLUENT RELEASE REPORT FOR 2022 UNIT 1, UNIT 2 and ISFSI (Docket Numbers 50-456, 50-457 and 72-73)

B. Tritium Unit Quarter 1 Quarter 2 Quarter 3 Quarter 4 Total Ci 4.89E+02 6.08E+02 2.71 E+02 7.10E+02 2.08E+03

C. Dissolved and Entrained Quarter 1 Quarter 2 Quarter 3 Quarter 4 Total Gases Unit Kr-87 Ci <LLD <LLD <LLD <LLD <LLD Kr-88 Ci <LLD <LLD <LLD <LLD <LLD Xe-133 Ci <LLD <LLD <LLD <LLD <LLD Xe-133m Ci <LLD <LLD <LLD <LLD <LLD Xe-135 Ci <LLD <LLD <LLD <LLD <LLD Xe-135m Ci <LLD <LLD <LLD <LLD <LLD Xe-138 Ci <LLD <LLD <LLD <LLD <LLD Total for Period Ci <LLD <LLD <LLD <LLD <LLD

TABLE 28-2 (Cont.)

LIQUID EFFLUENTS - BATCH MODE UNIT 1 AND UNIT 2 Nuclides Released Batch Mode D. Gross Alpha Unit Quarter 1 Quarter 2 Quarter 3 Quarter 4 Total Ci <LLD <LLD <LLD <LLD <LLD

29 of 95 BRAIDWOOD NUCLEAR POWER STATION RADIOACTIVE EFFLUENT RELEASE REPORT FOR 2022 UNIT 1, UNIT 2 and ISFSI (Docket Numbers 50-456, 50-457 and 72-73)

APPENDIX B: SOLID WASTE AND IRRADIATED FUEL SHIPMENTS

30 of 95 BRAIDWOOD NUCLEAR POWER STATION RADIOACTIVE EFFLUENT RELEASE REPORT FOR 2022 UNIT 1, UNIT 2 and ISFSI (Docket Numbers 50-456, 50-457 and 72-73)

A. Solid Waste Shipped Offsite for Burial or Disposal (Not Irradiated Fuel)

1. Low-Level Waste

Resins, Filters, And Evaporator Bottoms Waste Volume Curies Class ft3 m3 Shipped A 3.74E+03 1.06E+02 3.53E+01 B 1.19E+02 3.73E+00 9.49E+01 C 0.00E+00 0.00E+00 0.00E+00 Unclassified 0.00E+00 0.00E+00 0.00E+00 All 3.86E+03 1.09E+02 1.30E+02 Major Nuclides for the Above Table:

H-3, C-14, Cr-51, Mn-54, Fe-55, Co-58, Co-60, Ni-59, Ni-63, Zn-65, Sr-90, Nb-94, Tc-99, Sb-125, 1-129, Cs-137, Ce-144, Th-232, U-238, Pu-238, Pu-239, Pu-241, Am-241, Cm-242, Cm-244

Dry Active Waste (DAW)

Waste Volume Curies Class ft3 m3 Shipped A 5.57E+03 1.58E+02 4.96E-01 B 0.00E+00 0.00E+00 0.00E+00 C 0.00E+00 0.00E+00 0.00E+00 Unclassified 0.00E+00 0.00E+00 0.00E+00 All 5.57E+03 1.58E+02 4.96E-01 Major Nuclides for the Above Table:

H-3, C-14, Cr-51, Mn-54, Fe-55, Co-58, Co-60, Ni-59, Ni-63, Sr-90, Zr-95, Nb-95, Tc-99, Sb-125, 1-129, Cs-137, Pu-238, Pu-239, Pu-241, Am-241, Cm-242, Cm-243, Cm-244

Irradiated Components Waste Volume Curies Class ft3 m3 Shipped A 0.00E+00 0.00E+00 0.00E+00 B 0.00E+00 0.00E+00 0.00E+00 C 0.00E+00 0.00E+00 0.00E+00 Unclassified 0.00E+00 0.00E+00 0.00E+00 All 0.00E+00 0.00E+00 0.00E+00 Major Nuclides for the Above Table: None

31 of 95 BRAIDWOOD NUCLEAR POWER STATION RADIOACTIVE EFFLUENT RELEASE REPORT FOR 2022 UNIT 1, UNIT 2 and ISFSI (Docket Numbers 50-456, 50-457 and 72-73)

1. Low-Level Waste (continued)

Other Waste Waste Volume Curies Class ft3 ma Shipped A 2.30E+02 6.51 E+00 7.77E-03 B 0.00E+00 0.00E+00 0.00E+00 C 0.00E+00 0.0OE+0O 0.00E+00 Unclassified 0.00E+00 O.00E+0O 0.00E+00 All 2.30E+02 6.51 E+00 7.77E-03 Major Nuclides for the Above Table:

H-3, C-14, Cr-51, Mn-54, Fe-55, Co-58, Co-60, Ni-59, Ni-63, Sr-90, Zr-95, Nb-95, Tc-99, Sb-125, 1-129, Cs-137, Pu-238, Pu-241, Am-241, Cm-242, Cm-243, Cm-244

Sum of All Low-Level Waste Shipped from Site Waste Volume Curies Class ft3 ma Shipped

A 9.54E+03 2.70E+02 3.58E+01 B 1.19E+02 3.37E+0O 9.49E+01 C 0.00E+00 O.00E+0O 0.00E+00 Unclassified 0.00E+00 0.0OE+00 0.00E+00 All 9.66E+03 2.74E+02 1.31 E+02 Major Nuclides for the Above Table:

H-3, C-14, Cr-51, Mn-54, Fe-55, Co-58, Co-60, Ni-59, Ni-63, Sr-90, Zr-95, Nb-94, Nb-95, Tc-99, Sn-117m, Sb-125, 1-129, Cs-137, Ce-144, Th-232, U-238, Pu-238, Pu-239, Pu-241, Am-241, Cm-242, Cm-243, Cm-244

32 of 95 BRAIDWOOD NUCLEAR POWER STATION RADIOACTIVE EFFLUENT RELEASE REPORT FOR 2022 UNIT 1, UNIT 2 and ISFSI (Docket Numbers 50-456, 50-457 and 72-73)

2. Estimate of Major Nuclide Composition (By Waste Type and Class)

a. Category A - Spent Resins, Filter Sludges, Evaporator Bottoms, etc.

Isotope Waste Class A Percent Waste Class B Percent Curies Abundance Curies Abundance H-3 1.14E+01 32.23% 1.84E+00 1.94%

Be-7 1.94E-02 0.06% N/A 0.00%

C-14 2.57E-01 0.73% 1.28E-02 0.01%

K-40 5.00E-15 0.00% N/A 0.00%

Cr-51 4.74E-04 0.00% 1.34E-03 0.00%

Mn-54 1.53E-00 4.33% 2.73E+0O 2.88%

Fe-55 1.46E+00 4.14% 4.31 E+00 4.54%

Fe-59 8.S0E-16 0.00% N/A 0.00%

Co-57 7.56E-02 0.21% 3.62E-01 0.38%

Co-58 5.68E-01 1.61% 1.16E+00 1.22%

Co-60 9.13E+00 25.86% 3.04E+01 32.00%

Ni-59 6.94E-02 0.20% 5.51 E-01 0.58%

Ni-63 9.52E+00 26.94% 5.14E+01 54.10%

Zn-65 2.76E-01 0.78% 1.78E-01 0.19%

Ge-68 1.20E-14 0.00% N/A 0.00%

Se-75 9.18E-06 0.00% N/A 0.00%

Sr-89 5.85E-05 0.00% 3.20E-4 0.00%

Sr-90 1.41 E-02 0.04% 8.57E-03 0.01%

Zr-95 1.29E-03 0.00% N/A 0.00%

Nb-94 4.90E-16 0.00% N/A 0.00%

Nb-95 2.78E-03 0.01% 4.03E-04 0.00%

Tc-99 1.82E-03 0.01% 1.75E-02 0.02%

Ru-103 2.40E-16 0.00% N/A 0.00%

Ru-106 3.30E-15 0.00% N/A 0.00%

Ag-110m 4.35E-03 0.01% 1.43E-02 0.02%

Sn-113 2.36E-03 0.01% N/A 0.00%

Sn-117m 5.55E-04 0.00% N/A 0.00%

Sb-124 2.64E-03 0.01% 7.04E-03 0.01%

Sb-125 7.21 E-01 2.04% 1.73E+00 1.82%

Te-123m 9.24E-05 0.00% N/A 0.00%

1-129 5.66E-09 0.00% N/A 0.00%

Cs-134 8.13E-04 0.00% 3.26E-03 0.00%

Cs-137 2.38E-01 0.67% 2.27E-01 0.24%

Ba-133 2.70E-16 0.00% N/A 0.00%

Ce-141 3.50E-16 0.00% N/A 0.00%

Ce-144 2.75E-02 0.08% 7.28E-03 0.01%

Eu-154 2.00E-15 0.00% N/A 0.00%

Eu-155 1.S0E-15 0.00% N/A 0.00%

Th-232 1.50E-15 0.00% N/A 0.00%

U-235 1.60E-15 0.00% N/A 0.00%

U-238 6.50E-15 0.00% N/A 0.00%

Pu-238 2.70E-04 0.00% 1.30E-04 0.00%

Pu-239 1.21 E-04 0.00% 2.89E-05 0.00%

Pu-241 1.22E-02 0.03% 4.25E-02 0.04%

Am-241 1.66E-04 0.00% 8.51 E-05 0.00%

Cm-242 7.61 E-07 0.00% 5.34E-06 0.00%

r,..,...,.. l"')A A ~ ~f"\\C f"\\A ("\\ ("\\("\\Q/ -1 7-1C nA f'\\ r'lr'IO/

v-111-L.""'t'""t I, IUL--V'-t u.uu /0 I. f I L.-Ul.of' U.UU"/0

33 of 95 BRAIDWOOD NUCLEAR POWER STATION RADIOACTIVE EFFLUENT RELEASE REPORT FOR 2022 UNIT 1, UNIT 2 and ISFSI (Docket Numbers 50-456, 50-457 and 72-73)

b. Category B - Dry Compressible Waste, Contaminated Equip, etc.

Isotope Waste Class Percent A Curies Abundance H-3 3.10E-02 6.22%

Be-7 1.51 E-03 0.30%

Cr-51 1.57E-02 3.15%

Mn-54 7.71 E-03 1.55%

Fe-55 1.55E-01 31.13%

Fe-59 1.25E-03 0.25%

Co-57 8.19E-04 0.16%

Co-58 5.96E-02 11.97%

Co-60 1.30E-01 26.06%

Ni-59 2.71 E-03 0.54%

Ni-63 5.81 E-02 11.68%

Zn-65 2.14E-03 0.43%

Sr-90 1.43E-04 0.03%

Zr-95 9.03E-03 1.81%

Nb-95 1.16E-02 2.33%

Tc-99 1.18E-03 0.24%

Ag-110m 1.04E-03 0.21%

Sn-113 1.14E-03 0.23%

Sb-125 6.09E-03 1.22%

Cs-137 1.09E-03 0.22%

Ce-144 5.93E-04 0.12%

Pu-238 1.03E-05 0.00%

Pu-239 1.53E-06 0.00%

Pu-241 7.16E-04 0.14%

Am-241 9.83E-06 0.00%

Cm-242 3.04E-06 0.00%

Cm-243 5.40E-06 0.00%

Cm-244 1.36E-05 0.00%

c. Category C - Irradiated Components, Control Rods, etc.

None

34 of 95 BRAIDWOOD NUCLEAR POWER STATION RADIOACTIVE EFFLUENT RELEASE REPORT FOR 2022 UNIT 1, UNIT 2 and ISFSI (Docket Numbers 50-456, 50-457 and 72-73)

d. Category D - Other (Oil, Reverse Osmosis Reject Water, Soil, Lagoon Sediment)

Isotope Waste Class Percent A Curies Abundance H-3 1.61 E-05 0.21%

Cr-51 5.01 E-04 6.42%

Mn-54 1.11 E-04 1.42%

Fe-55 2.11E-03 27.00%

Fe-59 5.53E-05 0.71%

Co-57 1.21 E-05 0.15%

Co-58 1.60E-03 20.55%

Co-60 1.65E-03 21.11%

Ni-59 3.40E-05 0.44%

Ni-63 1.09E-03 13.96%

Zn-65 2.82E-05 0.36%

Sr-90 2.31 E-06 0.03%

Zr-95 2.21 E-04 2.83%

Nb-95 2.12E-04 2.72%

Tc-99 1.60E-05 0.20%

Ag-110m 1.63E-05 0.21%

Sn-113 1.58E-05 0.20%

Sb-125 8.09E-05 1.04%

Cs-137 1.91 E-05 0.24%

Ce-144 9.27E-06 0.12%

Pu-238 1.39E-07 0.00%

Pu-241 5.14E-06 0.07%

Am-241 1.19E-07 0.00%

Cm-242 5.54E-08 0.00%

Cm-243 2.02E-07 0.00%

Cm-244 1.98E-07 0.00%

35 of 95 BRAIDWOOD NUCLEAR POWER STATION RADIOACTIVE EFFLUENT RELEASE REPORT FOR 2022 UNIT 1, UNIT 2 and ISFSI (Docket Numbers 50-456, 50-457 and 72-73)

3. Solid Waste Disposition

Number of Mode of Transportation Destination Shipments 1 CAST Transportation Diversified Scientific Services, Inc 657 Gallaher Rd 1 CAST Transportation Energy Solutions-Bear Creek Facility 1560 Bear Creek Road 4 Hittman Transportation Energy Solutions Services - Gallaher Rd 628 Gallaher Rd.

7 Hittman Transportation Energy Solutions-Bear Creek Facility 1560 Bear Creek Road 3 Hittman Transportation EnergySolutions LLC.

Clive Disposal Site - Containerized Waste Facility 1 Hittman Transportation Waste Control Specialists LLC Compact Waste Disposal Facility

B. Irradiated Fuel Shipments

None

C. Irradiated Fuel Shipments (disposition)

No irradiated fuel shipments were dispositioned at Braidwood during January through December 2022.

D. Changes to the Process Control Program (PCP)

There were no Process Control Changes in 2022.

36 of 95 BRAIDWOOD NUCLEAR POWER STATION RADIOACTIVE EFFLUENT RELEASE REPORT FOR 2022 UNIT 1, UNIT 2 and ISFSI (Docket Numbers 50-456, 50-457 and 72-73)

APPENDIX C: WIND DIRECTION AND STABILITY CLASSES

37 of 95 BRAIDWOOD NUCLEAR POWER STATION RADIOACTIVE EFFLUENT RELEASE REPORT FOR 2022 UNIT 1, UNIT 2 and ISFSI (Docket Numbers 50-456, 50-457 and 72-73)

WIND STABILITY CLASSES

Table C-4

Atmospheric Stability Classes

Temperature Change Descri[!tion Pasguill Stabili!Y Class "cr,,(degrees} with HeighWC/100 m}

Extremely Unstable A >22.5 < -1.9 Moderately Unstable B 17 5 to 22-5 -*l.9to-1.7 Slightly Unstable C 12.5 to 175 -l.7to-1.5 Neutral D 7.5to 125 -1.5to-0.5 Slightfy Stable E 3.8 to 7.5 -0.5 to 1.5 Moderately Stable F 2.1 to 3.8 1.5to4.0 Extremely Stable G 0 to 2.1 >4.0

"o-,, is the standard deviation of horizontal wind direction fluctuation over a period of 15 minutes to *1 hour.

From Regulatory Guide 1.21, Table 48.

Atmospheric Stability Classes, Table C-4 from Braidwood ODCM.

38 of 95 BRAIDWOOD NUCLEAR POWER STATION RADIOACTIVE EFFLUENT RELEASE REPORT FOR 2022 UNIT 1, UNIT 2 and ISFSI (Docket Numbers 50-456, 50-457 and 72-73)

Period of Record: January - March 2022 Stability Class - Extremely Unstable - 199Ft-30Ft Delta-T (F)

Winds Measured at 34 Feet

Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total

N 0 0 1 0 0 0 1

NNE 0 0 1 0 0 0 1

NE 0 0 0 0 0 0 0

ENE 0 0 0 0 0 0 0

E 0 0 1 0 0 0 1

ESE 0 0 0 0 0 0 0

SE 0 0 1 0 0 0 1

SSE 0 1 0 0 0 0 1

s 0 0 0 0 0 0 0

SSW 0 0 0 0 0 0 0

SW 0 0 0 0 0 0 0

WSW 0 0 0 0 0 0 0

w 0 0 0 6 0 0 6

WNW 0 0 11 2 0 0 13

NW 0 0 11 0 0 0 11

NNW 0 0 12 0 0 0 12

Variable 0 0 0 0 0 0 0

Total 0 1 38 8 0 0 47

Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 3

39 of 95 BRAIDWOOD NUCLEAR POWER STATION RADIOACTIVE EFFLUENT RELEASE REPORT FOR 2022 UNIT 1, UNIT 2 and ISFSI (Docket Numbers 50-456, 50-457 and 72-73)

Braidwood Generating Station

Period of Record: January - March 2022 Stability Class - Moderately Unstable - 199Ft-30Ft Delta-T (F)

Winds Measured at 34 Feet

Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total

N 0 1 1 0 0 0 2

NNE 0 1 2 0 0 0 3

NE 0 1 0 0 0 0 1

ENE 0 0 1 0 0 0 1

E 0 1 1 0 0 0 2

ESE 0 0 2 1 0 0 3

SE 0 0 0 0 0 0 0

SSE 0 0 0 0 0 0 0

s 0 0 0 0 0 0 0

SSW 0 0 6 5 0 0 11

SW 0 0 0 5 0 0 5

WSW 0 0 6 0 0 0 6

w 0 0 6 5 0 0 11

WNW 0 0 7 1 0 0 8

NW 0 2 15 0 0 0 17

NNW 0 2 4 0 0 0 6

Variable 0 0 0 0 0 0 0

Total 0 8 51 17 0 0 76

Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 1 Hours of missing stability measurements in all stability classes: 3

40 of 95 BRAIDWOOD NUCLEAR POWER STATION RADIOACTIVE EFFLUENT RELEASE REPORT FOR 2022 UNIT 1, UNIT 2 and ISFSI (Docket Numbers 50-456, 50-457 and 72-73)

Braidwood Generating Station

Period of Record: January - March 2022 Stability Class - Slightly Unstable - 199Ft-30Ft Delta-T (F)

Winds Measured at 34 Feet

Wind Speed ( in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total

N 0 1 0 0 0 0 1

NNE 0 2 0 0 0 0 2

NE 0 3 1 0 0 0 4

ENE 0 5 1 0 0 0 6

E 0 8 0 0 0 0 8

ESE 0 0 0 1 0 0 1

SE 0 1 2 1 0 0 4

SSE 0 2 2 0 0 0 4

s 0 1 3 0 0 0 4

SSW 0 0 1 7 1 0 9

SW 0 2 3 1 0 0 6

WSW 0 3 4 2 0 0 9

w 0 5 12 4 4 0 25

WNW 0 9 14 1 0 0 24

NW 0 7 13 0 0 0 20

NNW 0 5 7 0 0 0 12

Variable 0 0 0 0 0 0 0

Total 0 54 63 17 5 0 139

Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 1 Hours of missing stability measurements in all stability classes: 3

41 of 95 BRAIDWOOD NUCLEAR POWER STATION RADIOACTIVE EFFLUENT RELEASE REPORT FOR 2022 UNIT 1, UNIT 2 and ISFSI (Docket Numbers 50-456, 50-457 and 72-73)

Braidwood Generating Station

Period of Record: January - March 2022 Stability Class - Neutral - 199Ft-30Ft Delta-T (F)

Winds Measured at 34 Feet

Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total

N 0 39 35 5 0 0 79

NNE 3 11 28 8 0 0 50

NE 3 15 50 2 0 0 70

ENE 1 24 19 0 0 0 44

E 0 19 3 0 0 0 22

ESE 1 3 21 9 0 0 34

SE 0 11 19 7 0 0 37

SSE 0 13 45 12 0 0 70

s 1 9 58 57 10 0 135

SSW 0 17 27 34 22 2 102

SW 0 24 60 30 4 0 118

WSW 1 16 24 11 2 0 54 w 3 24 52 17 17 0 113

WNW 8 56 84 40 6 0 194

NW 6 48 60 1 0 0 115

NNW 5 31 34 3 0 0 73

Variable 0 0 0 0 0 0 0

Total 32 360 619 236 61 2 1310

Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 30 Hours of missing stability measurements in all stability classes: 3

42 of 95 BRAIDWOOD NUCLEAR POWER STATION RADIOACTIVE EFFLUENT RELEASE REPORT FOR 2022 UNIT 1, UNIT 2 and ISFSI (Docket Numbers 50-456, 50-457 and 72-73)

Braidwood Generating Station

Period of Record: January - March 2022 Stability Class - Slightly Stable - 199Ft-30Ft Delta-T (F)

Winds Measured at 34 Feet

Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total

N 0 7 0 0 0 0 7

NNE 2 0 0 0 0 0 2

NE 1 5 0 0 0 0 6

ENE 5 11 0 0 0 0 16

E 7 5 0 0 0 0 12

ESE 1 13 7 0 0 0 21

SE 0 14 9 0 0 0 23

SSE 1 17 8 2 0 0 28

s 0 22 23 11 6 0 62

SSW 3 5 21 4 3 0 36

SW 1 15 10 9 1 0 36

WSW 3 27 8 0 0 0 38

w 14 29 12 1 0 0 56

WNW 14 28 1 0 0 0 43

NW 5 11 1 0 0 0 17

NNW 3 5 0 0 0 0 8

Variable 0 0 0 0 0 0 0

Total 60 214 100 27 10 0 411

Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 3

43 of 95 BRAIDWOOD NUCLEAR POWER STATION RADIOACTIVE EFFLUENT RELEASE REPORT FOR 2022 UNIT 1, UNIT 2 and ISFSI (Docket Numbers 50-456, 50-457 and 72-73)

Braidwood Generating Station

Period of Record: January - March 2022 Stability Class - Moderately Stable - 199Ft-30Ft Delta-T (F)

Winds Measured at 34 Feet

Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total

N 2 0 0 0 0 0 2

NNE 1 0 0 0 0 0 1

NE 2 0 0 0 0 0 2

ENE 5 0 0 0 0 0 5

E 1 1 0 0 0 0 2

ESE 2 0 0 0 0 0 2

SE 2 4 0 0 0 0 6

SSE 3 4 0 0 0 0 7

s 0 2 0 0 0 0 2

SSW 2 4 5 0 0 0 11

SW 0 8 3 0 0 0 11

WSW 2 21 0 0 0 0 23

w 6 8 0 0 0 0 14

WNW 6 5 0 0 0 0 11

NW 7 1 0 0 0 0 8

NNW 3 0 0 0 0 0 3

Variable 0 0 0 0 0 0 0

Total 44 58 8 0 0 0 110

Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 3

44 of 95 BRAIDWOOD NUCLEAR POWER STATION RADIOACTIVE EFFLUENT RELEASE REPORT FOR 2022 UNIT 1, UNIT 2 and ISFSI (Docket Numbers 50-456, 50-457 and 72-73)

Braidwood Generating Station

Period of Record: January - March 2022 Stability Class - Extremely Stable - 199Ft-30Ft Delta-T (F)

Winds Measured at 34 Feet

Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total

N 2 0 0 0 0 0 2

NNE 1 0 0 0 0 0 1

NE 3 0 0 0 0 0 3

ENE 3 0 0 0 0 0 3

E 2 2 0 0 0 0 4

ESE 2 0 0 0 0 0 2

SE 2 0 0 0 0 0 2

SSE 0 1 0 0 0 0 1

s 1 0 0 0 0 0 1

SSW 2 0 1 0 0 0 3

SW 0 0 0 0 0 0 0

WSW 2 1 0 0 0 0 3

w 1 0 0 0 0 0 1

WNW 5 0 0 0 0 0 5

NW 1 0 0 0 0 0 1

NNW 0 0 0 0 0 0 0

Variable 0 0 0 0 0 0 0

Total 27 4 1 0 0 0 32

Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 3

45 of 95 BRAIDWOOD NUCLEAR POWER STATION RADIOACTIVE EFFLUENT RELEASE REPORT FOR 2022 UNIT 1, UNIT 2 and ISFSI (Docket Numbers 50-456, 50-457 and 72-73)

Braidwood Generating Station

Period of Record: January - March 2022 Stability Class - Extremely Unstable - 199Ft-30Ft Delta-T (F)

Winds Measured at 203 Feet

Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total

N 0 0 1 0 0 0 1

NNE 0 0 1 0 0 0 1

NE 0 0 0 0 0 0 0

ENE 0 0 0 0 0 0 0

E 0 0 1 0 0 0 1

ESE 0 0 0 0 0 0 0

SE 0 0 0 1 0 0 1

SSE 0 1 0 0 0 0 1

s 0 0 0 0 0 0 0

SSW 0 0 0 0 0 0 0

SW 0 0 0 0 0 0 0

WSW 0 0 0 0 0 0 0

w 0 0 0 4 1 0 5

WNW 0 0 3 10 0 0 13

NW 0 0 3 7 1 0 11

NNW 0 0 6 7 0 0 13

Variable 0 0 0 0 0 0 0

Total 0 1 15 29 2 0 47

Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 3

46 of 95 BRAIDWOOD NUCLEAR POWER STATION RADIOACTIVE EFFLUENT RELEASE REPORT FOR 2022 UNIT 1, UNIT 2 and ISFSI (Docket Numbers 50-456, 50-457 and 72-73)

Braidwood Generating Station

Period of Record: January - March 2022 Stability Class - Moderately Unstable - 199Ft-30Ft Delta-T (F)

Winds Measured at 203 Feet

Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total

N 0 0 1 1 0 0 2

NNE 0 0 2 0 0 0 2

NE 0 1 1 0 0 0 2

ENE 0 0 0 0 0 0 0

E 0 0 1 2 0 0 3

ESE 0 0 2 0 1 0 3

SE 0 0 0 0 0 0 0

SSE 0 0 0 0 0 0 0

s 0 0 0 0 0 0 0

SSW 0 0 3 3 9 0 15

SW 0 0 0 0 1 0 1

WSW 0 0 3 3 0 0 6

w 0 0 4 1 5 0 10

WNW 0 0 4 5 0 0 9

NW 0 0 4 10 4 0 18

NNW 0 0 4 2 0 0 6

Variable 0 0 0 0 0 0 0

Total 0 1 29 27 20 0 77

Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 3

47 of 95 BRAIDWOOD NUCLEAR POWER STATION RADIOACTIVE EFFLUENT RELEASE REPORT FOR 2022 UNIT 1, UNIT 2 and ISFSI (Docket Numbers 50-456, 50-457 and 72-73)

Braidwood Generating Station

Period of Record: January - March 2022 Stability Class - Slightly Unstable - 199Ft-30Ft Delta-T (F)

Winds Measured at 203 Feet

Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total

N 0 0 1 0 0 0 1

NNE 0 2 0 0 0 0 2

NE 0 2 2 0 0 0 4

ENE 0 2 2 0 0 0 4

E 0 0 7 1 0 0 8

ESE 0 0 2 0 1 0 3

SE 0 0 2 1 0 1 4

SSE 0 1 4 0 0 0 5

s 0 0 4 0 1 0 5

SSW 0 0 0 1 5 1 7

SW 0 2 4 1 0 0 7

WSW 0 3 6 2 0 0 11

w 0 0 7 7 3 4 21

WNW 0 0 12 5 2 0 19

NW 0 1 13 6 6 0 26

NNW 0 1 8 4 0 0 13

Variable 0 0 0 0 0 0 0

Total 0 14 74 28 18 6 140

Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 3

48 of 95 BRAIDWOOD NUCLEAR POWER STATION RADIOACTIVE EFFLUENT RELEASE REPORT FOR 2022 UNIT 1, UNIT 2 and ISFSI (Docket Numbers 50-456, 50-457 and 72-73)

Braidwood Generating Station

Period of Record: January - March 2022 Stability Class - Neutral - 199Ft-30Ft Delta-T (F)

Winds Measured at 203 Feet

Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total

N 0 13 35 52 6 0 106

NNE 0 5 14 20 13 0 52

NE 1 2 12 52 4 0 71

ENE 2 8 17 8 0 0 35

E 2 0 17 9 0 0 28

ESE 0 0 1 8 15 7 31

SE 0 0 8 14 5 5 32

SSE 0 3 15 30 21 1 70

s 0 1 25 54 33 23 136

SSW 0 7 19 35 33 29 123

SW 0 14 27 46 15 6 108

WSW 0 7 14 15 8 4 48

w 0 5 22 34 12 17 90

WNW 1 17 45 66 38 17 184

NW 2 13 41 71 19 0 146

NNW 0 11 31 32 4 0 78

Variable 0 0 0 0 0 0 0

Total 8 106 343 546 22 6 109 1338

Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 2 Hours of missing stability measurements in all stability classes: 3

49 of 95 BRAIDWOOD NUCLEAR POWER STATION RADIOACTIVE EFFLUENT RELEASE REPORT FOR 2022 UNIT 1, UNIT 2 and ISFSI (Docket Numbers 50-456, 50-457 and 72-73)

Braidwood Generating Station

Period of Record: January - March 2022 Stability Class - Slightly Stable - 199Ft-30Ft Delta-T (F)

Winds Measured at 203 Feet

Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total

N 0 1 7 1 0 0 9

NNE 0 1 1 0 0 0 2

NE 0 1 6 0 0 0 7

ENE 0 2 9 0 0 0 11

E 0 0 9 1 0 0 10

ESE 0 3 3 10 4 0 20

SE 0 0 5 10 3 0 18

SSE 0 1 5 11 4 0 21

s 1 3 8 20 14 8 54

SSW 0 5 19 33 3 6 66

SW 0 9 11 8 5 2 35

WSW 1 4 18 9 1 0 33 w 0 3 21 12 1 0 37

WNW 1 5 27 8 0 0 41

NW 1 7 25 3 0 0 36

NNW 0 2 9 0 0 0 11

Variable 0 0 0 0 0 0 0

Total 4 47 183 126 35 16 411

Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 3

50 of 95 BRAIDWOOD NUCLEAR POWER STATION RADIOACTIVE EFFLUENT RELEASE REPORT FOR 2022 UNIT 1, UNIT 2 and ISFSI (Docket Numbers 50-456, 50-457 and 72-73)

Braidwood Generating Station

Period of Record: January - March 2022 Stability Class - Moderately Stable - 199Ft-30Ft Delta-T (F)

Winds Measured at 203 Feet

Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total

N 0 3 8 0 0 0 11

NNE 0 0 1 0 0 0 1

NE 0 0 0 0 0 0 0

ENE 0 0 0 0 0 0 0

E 0 1 1 0 0 0 2

ESE 1 2 2 0 0 0 5

SE 0 0 1 0 0 0 1

SSE 0 0 5 0 0 0 5

s 0 1 4 1 0 0 6

SSW 0 3 4 0 0 0 7

SW 0 0 5 8 1 0 14

WSW 0 0 10 4 0 0 14

w 0 0 9 8 0 0 17

WNW 1 1 7 5 0 0 14

NW 0 1 4 2 0 0 7

NNW 2 2 2 0 0 0 6

Variable 0 0 0 0 0 0 0

Total 4 14 63 28 1 0 110

Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 3

51 of 95 BRAIDWOOD NUCLEAR POWER STATION RADIOACTIVE EFFLUENT RELEASE REPORT FOR 2022 UNIT 1, UNIT 2 and ISFSI (Docket Numbers 50-456, 50-457 and 72-73)

Braidwood Generating Station

Period of Record: January - March 2022 Stability Class - Extremely Stable - 199Ft-30Ft Delta-T (F)

Winds Measured at 203 Feet

Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total

N 0 0 0 0 0 0 0

NNE 0 0 0 0 0 0 0

NE 1 0 0 0 0 0 1

ENE 0 0 0 0 0 0 0

E 1 1 1 0 0 0 3

ESE 0 0 2 1 0 0 3

SE 0 0 0 1 0 0 1

SSE 1 3 0 0 0 0 4

s 1 3 3 0 0 0 7

SSW 0 0 0 0 0 0 0

SW 0 2 1 1 0 0 4

WSW 0 2 3 0 0 0 5

w 1 0 0 0 0 0 1

WNW 0 0 1 1 0 0 2

NW 0 0 0 0 0 0 0

NNW 0 1 0 0 0 0 1

Variable 0 0 0 0 0 0 0

Total 5 12 11 4 0 0 32

Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 3

52 of 95 BRAIDWOOD NUCLEAR POWER STATION RADIOACTIVE EFFLUENT RELEASE REPORT FOR 2022 UNIT 1, UNIT 2 and ISFSI (Docket Numbers 50-456, 50-457 and 72-73)

Braidwood Generating Station

Period of Record: April - June 2022 Stability Class - Extremely Unstable - 199Ft-30Ft Delta-T (F)

Winds Measured at 34 Feet

Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total

N 0 1 0 0 0 0 1

NNE 0 1 2 0 0 0 3

NE 0 3 5 0 0 0 8

ENE 0 3 6 0 0 0 9

E 0 1 4 0 0 0 5

ESE 0 0 0 0 0 0 0

SE 0 0 5 6 0 0 11

SSE 0 l 0 3 0 0 4

s 0 5 3 0 0 0 8

SSW 0 0 3 8 0 0 11

SW 0 l 9 4 0 0 14

WSW 0 3 7 2 4 1 17

w 0 0 6 3 1 0 10

WNW 0 0 27 3 0 0 30

NW 0 1 18 0 0 0 19

NNW 0 1 15 0 0 0 16

Variable 0 0 0 0 0 0 0

Total 0 21 110 29 5 1 166

Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 0

53 of 95 BRAIDWOOD NUCLEAR POWER STATION RADIOACTIVE EFFLUENT RELEASE REPORT FOR 2022 UNIT 1, UNIT 2 and ISFSI (Docket Numbers 50-456, 50-457 and 72-73)

Braidwood Generating Station

Period of Record: April - June 2022 Stability Class - Moderately Unstable - 199Ft-30Ft Delta-T (F)

Winds Measured at 34 Feet

Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total

N 0 0 0 0 0 0 0

NNE 0 2 0 0 0 0 2

NE 0 7 6 0 0 0 13

ENE 0 12 2 0 0 0 14

E 0 7 3 0 0 0 10

ESE 1 2 4 0 0 0 7

SE 0 4 1 3 0 0 8

SSE 1 3 4 2 0 0 10

s 0 4 5 1 0 0 10

SSW 0 0 1 8 0 0 9

SW 0 3 5 2 0 0 10

WSW 0 3 2 2 0 0 7

w 0 1 4 1 0 0 6

WNW 0 2 7 1 0 0 10

NW 0 2 9 0 0 0 11

NNW 0 3 4 0 0 0 7

Variable 0 0 0 0 0 0 0

Total 2 55 57 20 0 0 134

Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 0

54 of 95 BRAIDWOOD NUCLEAR POWER STATION RADIOACTIVE EFFLUENT RELEASE REPORT FOR 2022 UNIT 1, UNIT 2 and ISFSI (Docket Numbers 50-456, 50-457 and 72-73)

Braidwood Generating Station

Period of Record: April - June 2022 Stability Class - Slightly Unstable - 199Ft-30Ft Delta-T (F)

Winds Measured at 34 Feet

Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total

N 0 3 1 0 0 0 4

NNE 0 3 0 0 0 0 3

NE 0 6 3 0 0 0 9

ENE 1 3 3 0 0 0 7

E 1 6 0 0 0 0 7

ESE 0 5 2 0 0 0 7

SE 1 1 2 2 0 0 6

SSE 0 1 6 3 0 0 10

s 0 1 8 4 2 0 15

SSW 0 0 4 1 2 0 7

SW 0 2 5 4 0 0 11

WSW 0 3 4 4 2 1 14

w 0 2 1 3 0 0 6

WNW 0 6 11 6 0 0 23

NW 0 4 4 0 0 0 8

NNW 0 7 4 0 0 0 11

Variable 0 0 0 0 0 0 0

Total 3 53 58 27 6 1 148

Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 0

55 of 95 BRAIDWOOD NUCLEAR POWER STATION RADIOACTIVE EFFLUENT RELEASE REPORT FOR 2022 UNIT 1, UNIT 2 and ISFSI (Docket Numbers 50-456, 50-457 and 72-73)

Braidwood Generating Station

Period of Record: April - June 2022 Stability Class - Neutral - 199Ft-30Ft Delta-T (F)

Winds Measured at 34 Feet

Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total

N 3 20 16 0 0 0 39

NNE 0 21 14 0 0 0 35

NE 5 32 33 3 0 0 73

ENE 7 46 20 0 0 0 73

E 3 34 2 0 0 0 39

ESE 1 18 16 2 0 0 37

SE 0 13 40 20 0 0 73

SSE 2 13 31 21 0 0 67

s 0 12 39 37 10 1 99

SSW 0 5 12 21 11 0 49

SW 0 12 35 20 5 0 72

WSW 1 11 29 14 0 1 56

w 2 19 24 16 1 0 62

WNW 3 30 42 16 1 0 92

NW 6 31 16 0 0 0 53

NNW 1 29 18 0 0 0 48

Variable 0 0 0 0 0 0 0

Total 34 346 387 170 28 2 967

Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 0

56 of 95 BRAIDWOOD NUCLEAR POWER STATION RADIOACTIVE EFFLUENT RELEASE REPORT FOR 2022 UNIT 1, UNIT 2 and ISFSI (Docket Numbers 50-456, 50-457 and 72-73)

Braidwood Generating Station

Period of Record: April - June 2022 Stability Class - Slightly Stable - 199Ft-30Ft Delta-T (F)

Winds Measured at 34 Feet

Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total

N 6 7 1 0 0 0 14

NNE 4 9 5 0 0 0 18

NE 8 17 0 0 0 0 25

ENE 15 25 0 0 0 0 40

E 15 15 4 0 0 0 34

ESE 12 18 13 0 0 0 43

SE 5 38 9 1 0 0 53

SSE 3 37 25 4 0 0 69

s 2 23 36 16 0 0 77

SSW 0 7 22 2 0 0 31

SW 1 15 28 3 0 0 47

WSW 2 15 4 0 0 0 21

w 4 30 8 1 0 0 43

WNW 17 17 5 0 0 0 39

NW 2 13 0 0 0 0 15

NNW 2 4 1 0 0 0 7

Variable 0 0 0 0 0 0 0

Total 98 2 90 161 27 0 0 576

Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 0

57 of 95 BRAIDWOOD NUCLEAR POWER STATION RADIOACTIVE EFFLUENT RELEASE REPORT FOR 2022 UNIT 1, UNIT 2 and ISFSI (Docket Numbers 50-456, 50-457 and 72-73)

Braidwood Generating Station

Period of Record: April - June 2022 Stability Class - Moderately Stable - 199Ft-30Ft Delta-T (F)

Winds Measured at 34 Feet

Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total

N 2 0 0 0 0 0 2

NNE 0 1 0 0 0 0 1

NE 4 0 0 0 0 0 4

ENE 7 0 0 0 0 0 7

E 12 2 0 0 0 0 14

ESE 8 5 0 0 0 0 13

SE 3 5 0 0 0 0 8

SSE 2 3 0 0 0 0 5

s 2 0 0 0 0 0 2

SSW 4 1 0 0 0 0 5

SW 3 1 0 0 0 0 4

WSW 7 4 0 0 0 0 11

w 14 2 0 0 0 0 16

WNW 13 2 0 0 0 0 15

NW 7 0 0 0 0 0 7

NNW 5 0 0 0 0 0 5

Variable 0 0 0 0 0 0 0

Total 93 26 0 0 0 0 119

Hours of calm in this stability class: 2 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 0

58 of 95 BRAIDWOOD NUCLEAR POWER STATION RADIOACTIVE EFFLUENT RELEASE REPORT FOR 2022 UNIT 1, UNIT 2 and ISFSI (Docket Numbers 50-456, 50-457 and 72-73)

Braidwood Generating Station

Period of Record: April - June 2022 Stability Class - Extremely Stable - 199Ft-30Ft Delta-T (F)

Winds Measured at 34 Feet

Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total

N 5 0 0 0 0 0 5

NNE 1 0 0 0 0 0 1

NE 6 0 0 0 0 0 6

ENE 6 0 0 0 0 0 6

E 8 0 0 0 0 0 8

ESE 9 3 0 0 0 0 12

SE 2 0 0 0 0 0 2

SSE 0 0 0 0 0 0 0

s 1 0 0 0 0 0 1

SSW 1 1 0 0 0 0 2

SW 1 0 0 0 0 0 1

WSW 2 1 0 0 0 0 3

w 8 0 0 0 0 0 8

WNW 7 0 0 0 0 0 7

NW 3 0 0 0 0 0 3

NNW 3 0 0 0 0 0 3

Variable 0 0 0 0 0 0 0

Total 63 5 0 0 0 0 68

Hours of calm in this stability class: 4 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 0

59 of 95 BRAIDWOOD NUCLEAR POWER STATION RADIOACTIVE EFFLUENT RELEASE REPORT FOR 2022 UNIT 1, UNIT 2 and ISFSI (Docket Numbers 50-456, 50-457 and 72-73)

Braidwood Generating Station

Period of Record: April - June 2022 Stability Class - Extremely Unstable - 199Ft-30Ft Delta-T (F)

Winds Measured at 203 Feet

Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total

N 0 0 1 0 0 0 1

NNE 0 1 2 0 0 0 3

NE 0 0 6 2 0 0 8

ENE 0 0 5 2 0 0 7

E 0 0 4 3 0 0 7

ESE 0 0 0 1 1 1 3

SE 0 1 1 2 4 1 9

SSE 0 0 0 0 1 2 3

s 0 1 6 0 0 0 7

SSW 0 0 2 7 4 0 13

SW 0 1 5 9 0 0 15

WSW 0 0 5 5 0 6 16

w 0 0 2 5 2 0 9

WNW 0 0 2 21 5 0 28

NW 0 0 9 12 0 0 21

NNW 0 0 9 7 0 0 16

Variable 0 0 0 0 0 0 0

Total 0 4 59 76 17 10 166

Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 0

60 of 95 BRAIDWOOD NUCLEAR POWER STATION RADIOACTIVE EFFLUENT RELEASE REPORT FOR 2022 UNIT 1, UNIT 2 and ISFSI (Docket Numbers 50-456, 50-457 and 72-73)

Braidwood Generating Station

Period of Record: April - June 2022 Stability Class - Moderately Unstable - 199Ft-30Ft Delta-T (F)

Winds Measured at 203 Feet

Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total

N 0 0 0 0 0 0 0

NNE 0 2 0 0 0 0 2

NE 0 5 5 5 0 0 15

ENE 0 4 5 1 0 0 10

E 0 1 7 3 0 0 11

ESE 0 2 2 3 1 0 8

SE 0 2 2 2 2 0 8

SSE 0 5 1 4 0 2 12

s 0 1 5 1 1 0 8

SSW 0 0 0 4 4 1 9

SW 0 1 6 5 0 0 12

WSW 0 0 4 1 0 0 5

w 0 0 3 2 1 0 6

WNW 0 0 5 4 1 0 10

NW 0 0 4 8 0 0 12

NNW 0 0 5 1 0 0 6

Variable 0 0 0 0 0 0 0

Total 0 23 54 44 10 3 134

Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 0

61 of 95 BRAIDWOOD NUCLEAR POWER STATION RADIOACTIVE EFFLUENT RELEASE REPORT FOR 2022 UNIT 1, UNIT 2 and ISFSI (Docket Numbers 50-456, 50-457 and 72-73)

Braidwood Generating Station

Period of Record: April - June 2022 Stability Class - Slightly Unstable - 199Ft-30Ft Delta-T (F)

Winds Measured at 203 Feet

Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total

N 0 1 1 1 0 0 3

NNE 0 2 2 0 0 0 4

NE 0 3 3 1 0 0 7

ENE 0 2 2 2 0 0 6

E 0 l 4 2 0 0 7

ESE 1 5 1 0 2 0 9

SE 1 0 1 2 0 2 6

SSE 0 0 3 5 3 0 11

s 0 0 4 5 3 2 14

SSW 0 0 4 2 0 2 8

SW 0 0 5 1 4 0 10

WSW 0 1 5 1 3 4 14 w 0 1 0 1 2 0 4

WNW 0 1 7 6 6 0 20

NW 0 4 1 9 1 0 15

NNW 0 6 4 0 0 0 10

Variable 0 0 0 0 0 0 0

Total 2 27 47 38 24 10 148

Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 0

62 of 95 BRAIDWOOD NUCLEAR POWER STATION RADIOACTIVE EFFLUENT RELEASE REPORT FOR 2022 UNIT 1, UNIT 2 and ISFSI (Docket Numbers 50-456, 50-457 and 72-73)

Braidwood Generating Station

Period of Record: April - June 2022 Stability Class - Neutral - 199Ft-30Ft Delta-T (F)

Winds Measured at 203 Feet

Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total

N 0 10 19 12 0 0 41

NNE 0 7 12 11 0 0 30

NE 1 14 24 36 3 0 78

ENE 2 16 33 11 0 0 62

E 1 6 16 17 0 0 40

ESE 0 1 8 23 8 3 43

SE 0 3 12 24 32 3 74

SSE 0 4 9 25 20 7 65

s 0 5 14 33 28 13 93

SSW 0 2 6 22 20 18 68

SW 1 2 19 25 13 4 64

WSW 0 4 13 27 9 3 56

w 0 13 16 14 14 1 58

WNW 1 7 31 20 21 3 83

NW 0 11 23 26 6 0 66

NNW 0 8 22 16 0 0 46

Variable 0 0 0 0 0 0 0

Total 6 113 277 342 174 55 967

Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 0

63 of 95 BRAIDWOOD NUCLEAR POWER STATION RADIOACTIVE EFFLUENT RELEASE REPORT FOR 2022 UNIT 1, UNIT 2 and ISFSI (Docket Numbers 50-456, 50-457 and 72-73)

Braidwood Generating Station

Period of Record: April - June 2022 Stability Class - Slightly Stable - 199Ft-30Ft Delta-T (F)

Winds Measured at 203 Feet

Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total

N 1 5 5 0 0 0 11

NNE 1 6 2 12 0 0 21

NE 0 2 13 2 0 0 17

ENE 1 8 19 1 0 0 29

E 2 5 14 8 2 0 31

ESE 1 3 12 10 10 1 37

SE 2 4 21 16 9 0 52

SSE 0 3 23 26 7 0 59

s 2 3 26 38 17 4 90

SSW 1 1 12 36 4 0 54

SW 1 3 12 21 4 0 41

WSW 1 5 10 6 2 0 24 w 0 5 17 9 2 0 33

WNW 3 3 14 9 0 0 29

NW 2 5 23 7 0 0 37

NNW 1 5 3 2 0 0 11

Variable 0 0 0 0 0 0 0

Total 19 66 226 203 57 5 57 6

Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 0

64 of 95 BRAIDWOOD NUCLEAR POWER STATION RADIOACTIVE EFFLUENT RELEASE REPORT FOR 2022 UNIT 1, UNIT 2 and ISFSI (Docket Numbers 50-456, 50-457 and 72-73)

Braidwood Generating Station

Period of Record: April - June 2022 Stability Class - Moderately Stable - 199Ft-30Ft Delta-T (F)

Winds Measured at 203 Feet

Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total

N 0 0 0 0 0 0 0

NNE 0 0 0 1 0 0 1

NE 1 2 0 0 0 0 3

ENE 2 2 0 0 0 0 4

E 0 2 4 2 0 0 8

ESE 0 3 12 6 0 0 21

SE 0 1 3 1 0 0 5

SSE 0 1 6 0 0 0 7

s 0 1 4 0 0 0 5

SSW 2 3 1 0 0 0 6

SW 0 2 1 0 0 0 3

WSW 1 3 2 1 0 0 7

w 0 3 1 6 0 0 10

WNW 0 6 7 2 0 0 15

NW 0 1 14 0 0 0 15

NNW 1 3 7 0 0 0 11

Variable 0 0 0 0 0 0 0

Total 7 33 62 19 0 0 121

Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 0

65 of 95 BRAIDWOOD NUCLEAR POWER STATION RADIOACTIVE EFFLUENT RELEASE REPORT FOR 2022 UNIT 1, UNIT 2 and ISFSI (Docket Numbers 50-456, 50-457 and 72-73)

Braidwood Generating Station

Period of Record: April - June 2022 Stability Class - Extremely Stable - 199Ft-30Ft Delta-T (F)

Winds Measured at 203 Feet

Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total

N 0 3 5 0 0 0 8

NNE 0 0 5 1 0 0 6

NE 0 1 1 0 0 0 2

ENE 1 1 0 0 0 0 2

E 2 1 1 0 0 0 4

ESE 0 1 2 1 0 0 4

SE 1 1 3 2 0 0 7

SSE 2 2 1 0 0 0 5 s 2 3 0 0 0 0 5

SSW 0 2 2 0 0 0 4

SW 0 0 2 0 0 0 2

WSW 0 1 1 1 0 0 3

w 3 0 3 0 0 0 6

WNW 1 1 4 1 0 0 7

NW 0 1 2 0 0 0 3

NNW 0 1 2 1 0 0 4

Variable 0 0 0 0 0 0 0

Total 12 19 34 7 0 0 72

Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 0 Braidwood Generating Station

66 of 95 BRAIDWOOD NUCLEAR POWER STATION RADIOACTIVE EFFLUENT RELEASE REPORT FOR 2022 UNIT 1, UNIT 2 and ISFSI (Docket Numbers 50-456, 50-457 and 72-73)

Braidwood Generating Station

Period of Record: July - September 2022 Stability Class - Extremely Unstable - 199Ft-30Ft Delta-T (F)

Winds Measured at 34 Feet

Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total

N 0 2 0 0 0 0 2

NNE 0 3 0 0 0 0 3

NE 0 3 6 0 0 0 9

ENE 0 4 1 0 0 0 5

E 0 0 0 0 0 0 0

ESE 0 1 0 0 0 0 1

SE 0 1 0 0 0 0 1

SSE 0 2 0 0 0 0 2

s 0 1 5 1 0 0 7

SSW 0 1 10 7 0 0 18

SW 0 0 4 1 0 0 5

WSW 0 0 6 1 0 0 7 w 0 2 9 6 0 0 17

WNW 0 1 3 0 0 0 4

NW 0 1 5 0 0 0 6

NNW 0 1 1 0 0 0 2

Variable 0 0 0 0 0 0 0

Total 0 23 50 16 0 0 89

Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 2

67 of 95 BRAIDWOOD NUCLEAR POWER STATION RADIOACTIVE EFFLUENT RELEASE REPORT FOR 2022 UNIT 1, UNIT 2 and ISFSI (Docket Numbers 50-456, 50-457 and 72-73)

Braidwood Generating Station

Period of Record: July - September 2022 Stability Class - Moderately Unstable - 199Ft-30Ft Delta-T (F)

Winds Measured at 34 Feet

Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total

N 0 9 0 0 0 0 9

NNE 0 6 1 0 0 0 7

NE 0 8 7 0 0 0 15

ENE 0 0 0 0 0 0 0

E 0 0 0 0 0 0 0

ESE 0 2 0 0 0 0 2

SE 0 7 0 0 0 0 7

SSE 0 5 1 0 0 0 6

s 0 9 6 2 0 0 17

SSW 0 4 10 5 0 0 19

SW 1 4 5 3 0 0 13

WSW 0 2 4 1 0 0 7

w 0 3 15 0 0 0 18

WNW 0 2 10 1 0 0 13

NW 0 10 0 0 0 0 10

NNW 1 4 1 0 0 0 6

Variable 0 0 0 0 0 0 0

Total 2 75 60 12 0 0 14 9

Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 2

68 of 95 BRAIDWOOD NUCLEAR POWER STATION RADIOACTIVE EFFLUENT RELEASE REPORT FOR 2022 UNIT 1, UNIT 2 and ISFSI (Docket Numbers 50-456, 50-457 and 72-73)

Braidwood Generating Station

Period of Record: July - September 2022 Stability Class - Slightly Unstable - 199Ft-30Ft Delta-T (F)

Winds Measured at 34 Feet

Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total

N 2 6 0 0 0 0 8

NNE 0 9 1 0 0 0 10

NE 0 16 5 0 0 0 21

ENE 2 8 0 0 0 0 10

E 2 2 0 0 0 0 4

ESE 2 1 0 0 0 0 3

SE 0 9 1 0 0 0 10

SSE 0 6 3 1 0 0 10

s 0 10 3 4 0 0 17

SSW 0 6 8 2 0 0 16

SW 0 5 6 0 0 0 11

WSW 0 6 8 0 0 0 14

w 1 6 8 0 0 0 15

WNW 0 9 7 1 0 0 17

NW 0 5 0 0 0 0 5

NNW 1 10 0 0 0 0 11

Variable 0 0 0 0 0 0 0

Total 10 114 50 8 0 0 182

Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 2

69 of 95 BRAIDWOOD NUCLEAR POWER STATION RADIOACTIVE EFFLUENT RELEASE REPORT FOR 2022 UNIT 1, UNIT 2 and ISFSI (Docket Numbers 50-456, 50-457 and 72-73)

Braidwood Generating Station

Period of Record: July - September 2022 Stability Class - Neutral - 199Ft-30Ft Delta-T (F)

Winds Measured at 34 Feet

Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total

N 6 20 8 0 0 0 34

NNE 7 54 11 0 0 0 72

NE 11 68 18 0 0 0 97

ENE 18 32 1 0 0 0 51

E 16 12 0 0 0 0 28

ESE 7 14 0 0 0 0 21

SE 8 19 5 0 0 0 32

SSE 5 32 13 0 0 0 50

s 3 29 60 8 0 0 100

SSW 0 5 55 16 0 0 76

SW 0 15 38 6 0 0 59

WSW 1 22 17 0 0 0 40 w 3 37 23 1 0 0 64

WNW 6 35 30 0 0 0 71

NW 8 14 14 0 0 0 36

NNW 5 12 9 0 0 0 26

Variable 0 0 0 0 0 0 0

Total 104 420 302 31 0 0 857

Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 2

70 of 95 BRAIDWOOD NUCLEAR POWER STATION RADIOACTIVE EFFLUENT RELEASE REPORT FOR 2022 UNIT 1, UNIT 2 and ISFSI (Docket Numbers 50-456, 50-457 and 72-73)

Braidwood Generating Station

Period of Record: July - September 2022 Stability Class - Slightly Stable - 199Ft-30Ft Delta-T (F)

Winds Measured at 34 Feet

Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total

N 14 6 4 0 0 0 24

NNE 11 20 0 0 0 0 31

NE 11 15 0 0 0 0 26

ENE 21 14 0 0 0 0 35

E 43 5 1 0 0 0 49

ESE 9 10 0 0 0 0 19

SE 14 35 0 0 0 0 49

SSE 9 49 1 0 0 0 59

s 3 46 20 0 0 0 69

SSW 0 16 10 1 0 0 27

SW 1 12 15 0 0 0 28

WSW 1 19 1 0 0 0 21

w 14 31 2 0 0 0 47

WNW 14 11 5 0 0 0 30

NW 13 4 1 0 0 0 18

NNW 7 13 7 0 0 0 27

Variable 0 0 0 0 0 0 0

Total 185 306 67 1 0 0 559

Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 2

71 of 95 BRAIDWOOD NUCLEAR POWER STATION RADIOACTIVE EFFLUENT RELEASE REPORT FOR 2022 UNIT 1, UNIT 2 and ISFSI (Docket Numbers 50-456, 50-457 and 72-73)

Braidwood Generating Station

Period of Record: July - September 2022 Stability Class - Moderately Stable - 199Ft-30Ft Delta-T (F)

Winds Measured at 34 Feet

Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total

N 4 2 0 0 0 0 6

NNE 5 2 0 0 0 0 7

NE 5 1 0 0 0 0 6

ENE 12 0 0 0 0 0 12

E 27 1 0 0 0 0 28

ESE 16 5 0 0 0 0 21

SE 9 7 0 0 0 0 16

SSE 3 2 0 0 0 0 5

s 2 0 0 0 0 0 2

SSW 2 2 0 0 0 0 4

SW 0 1 0 0 0 0 1

WSW 4 15 0 0 0 0 19

w 37 9 0 0 0 0 46

WNW 37 5 0 0 0 0 42

NW 5 0 0 0 0 0 5

NNW 5 1 0 0 0 0 6

Variable 0 0 0 0 0 0 0

Total 173 53 0 0 0 0 226

Hours of calm in this stability class: 1 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 2

72 of 95 BRAIDWOOD NUCLEAR POWER STATION RADIOACTIVE EFFLUENT RELEASE REPORT FOR 2022 UNIT 1, UNIT 2 and ISFSI (Docket Numbers 50-456, 50-457 and 72-73)

Braidwood Generating Station

Period of Record: July - September 2022 Stability Class - Extremely Stable - 199Ft-30Ft Delta-T (F)

Winds Measured at 34 Feet

Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total

N 5 0 0 0 0 0 5

NNE 4 0 0 0 0 0 4

NE 5 0 0 0 0 0 5

ENE 19 0 0 0 0 0 19

E 6 1 0 0 0 0 7

ESE 3 0 0 0 0 0 3

SE 0 0 0 0 0 0 0

SSE 1 0 0 0 0 0 1

s 0 1 0 0 0 0 1

SSW 1 0 0 0 0 0 1

SW 1 0 0 0 0 0 1

WSW 3 3 0 0 0 0 6

w 34 0 0 0 0 0 34

WNW 21 0 0 0 0 0 21

NW 16 0 0 0 0 0 16

NNW 7 0 0 0 0 0 7

Variable 0 0 0 0 0 0 0

Total 12 6 5 0 0 0 0 131

Hours of calm in this stability class: 12 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 2

73 of 95 BRAIDWOOD NUCLEAR POWER STATION RADIOACTIVE EFFLUENT RELEASE REPORT FOR 2022 UNIT 1, UNIT 2 and ISFSI (Docket Numbers 50-456, 50-457 and 72-73)

Braidwood Generating Station

Period of Record: July - September 2022 Stability Class - Extremely Unstable - 199Ft-30Ft Delta-T (F)

Winds Measured at 203 Feet

Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total

N 0 2 3 0 0 0 5

NNE 0 0 0 0 0 0 0

NE 0 1 5 3 0 0 9

ENE 0 2 3 0 0 0 5

E 0 0 0 0 0 0 0

ESE 0 1 0 0 0 0 1

SE 0 0 1 0 0 0 1

SSE 0 0 2 0 0 0 2

s 0 1 4 3 2 0 10

SSW 0 1 3 12 2 0 18

SW 0 0 1 1 0 0 2

WSW 0 0 3 4 0 0 7

w 0 1 4 7 4 0 16

WNW 0 0 1 4 0 0 5

NW 0 0 2 3 0 0 5

NNW 0 1 1 1 0 0 3

Variable 0 0 0 0 0 0 0

Total 0 10 33 38 8 0 89

Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 2

74 of 95 BRAIDWOOD NUCLEAR POWER STATION RADIOACTIVE EFFLUENT RELEASE REPORT FOR 2022 UNIT 1, UNIT 2 and ISFSI (Docket Numbers 50-456, 50-457 and 72-73)

Braidwood Generating Station

Period of Record: July - September 2022 Stability Class - Moderately Unstable - 199Ft-30Ft Delta-T (F)

Winds Measured at 203 Feet

Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total

N 0 5 4 0 0 0 9

NNE 0 5 2 l 0 0 8

NE 0 2 5 3 0 0 10

ENE 0 2 0 0 0 0 2

E 0 0 0 0 0 0 0

ESE 0 2 0 0 0 0 2

SE 0 7 l 0 0 0 8

SSE 0 4 7 0 0 0 11

s 0 5 4 4 2 0 15

SSW 1 3 8 4 3 0 19

SW 0 2 2 6 0 0 10

WSW 0 l 4 4 0 0 9

w 0 1 4 8 0 0 13

WNW 0 2 7 6 l 0 16

NW 0 5 5 0 0 0 10

NNW 0 3 4 0 0 0 7

Variable 0 0 0 0 0 0 0

Total l 49 57 36 6 0 149

Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 2

75 of 95 BRAIDWOOD NUCLEAR POWER STATION RADIOACTIVE EFFLUENT RELEASE REPORT FOR 2022 UNIT 1, UNIT 2 and ISFSI (Docket Numbers 50-456, 50-457 and 72-73)

Braidwood Generating Station

Period of Record: July - September 2022 Stability Class - Slightly Unstable - 199Ft-30Ft Delta-T (F)

Winds Measured at 203 Feet

Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total

N 0 5 4 0 0 0 9

NNE 1 7 1 0 0 0 9

NE 0 1 14 2 0 0 17

ENE 0 11 1 0 0 0 12

E 1 2 1 0 0 0 4

ESE 1 3 0 0 0 0 4

SE 0 11 2 0 0 0 13

SSE 0 3 2 1 1 0 7

s 0 7 3 5 2 0 17

SSW 0 4 7 6 1 0 18

SW 0 3 5 3 0 0 11

WSW 0 4 4 5 0 0 13

w 0 5 5 3 0 0 13

WNW 0 5 8 5 1 0 19

NW 0 2 6 0 0 0 8

NNW 1 5 2 0 0 0 8

Variable 0 0 0 0 0 0 0

Total 4 78 65 30 5 0 182

Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 2

76 of 95 BRAIDWOOD NUCLEAR POWER STATION RADIOACTIVE EFFLUENT RELEASE REPORT FOR 2022 UNIT 1, UNIT 2 and ISFSI (Docket Numbers 50-456, 50-457 and 72-73)

Braidwood Generating Station

Period of Record: July - September 2022 Stability Class - Neutral - 199Ft-30Ft Delta-T (F)

Winds Measured at 203 Feet

Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total

N 4 9 18 4 0 0 35

NNE 1 11 46 10 0 0 68

NE 2 16 66 8 0 0 92

ENE 5 18 21 0 0 0 44

E 1 19 15 1 0 0 36

ESE 2 6 11 2 0 0 21

SE 3 11 11 5 0 0 30

SSE 1 21 24 8 1 0 55

s 1 10 33 38 7 0 89

SSW 1 2 17 70 15 0 105

SW 0 11 23 12 2 0 48

WSW 0 15 16 8 0 0 39

w 3 23 13 17 1 0 57

WNW 1 11 25 24 4 0 65

NW 3 7 13 15 6 0 44

NNW 1 10 13 5 0 0 29

Variable 0 0 0 0 0 0 0

Total 29 200 365 227 36 0 857

Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 2

77 of 95 BRAIDWOOD NUCLEAR POWER STATION RADIOACTIVE EFFLUENT RELEASE REPORT FOR 2022 UNIT 1, UNIT 2 and ISFSI (Docket Numbers 50-456, 50-457 and 72-73)

Braidwood Generating Station

Period of Record: July - September 2022 Stability Class - Slightly Stable - 199Ft-30Ft Delta-T (F)

Winds Measured at 203 Feet

Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total

N 1 7 13 0 0 0 21

NNE 1 4 26 4 0 0 35

NE 0 3 32 2 0 0 37

ENE 0 11 8 0 0 0 19

E 1 4 24 2 0 0 31

ESE 0 5 19 3 0 0 27

SE 1 10 23 9 0 0 43

SSE 1 14 32 4 0 0 51

s 0 8 41 24 0 0 73

SSW 0 3 30 18 3 0 54

SW 0 3 14 10 1 0 28

WSW 1 6 9 5 0 0 21 w 0 3 18 14 0 0 35

WNW 4 5 11 15 0 0 35

NW 0 4 9 3 0 0 16

NNW 1 3 15 13 1 0 33

Variable 0 0 0 0 0 0 0

Total 11 93 324 12 6 5 0 559

Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 2

78 of 95 BRAIDWOOD NUCLEAR POWER STATION RADIOACTIVE EFFLUENT RELEASE REPORT FOR 2022 UNIT 1, UNIT 2 and ISFSI (Docket Numbers 50-456, 50-457 and 72-73)

Braidwood Generating Station

Period of Record: July - September 2022 Stability Class - Moderately Stable - 199Ft-30Ft Delta-T (F)

Winds Measured at 203 Feet

Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total

N 1 5 2 0 0 0 8

NNE 0 3 3 2 0 0 8

NE 0 6 1 3 0 0 10

ENE 0 5 5 0 0 0 10

E 1 2 6 1 0 0 10

ESE 1 0 12 6 0 0 19

SE 0 5 13 1 0 0 19

SSE 0 3 13 0 0 0 16

s 0 4 6 0 0 0 10

SSW 0 1 3 0 0 0 4

SW 0 4 0 0 0 0 4

WSW 0 1 7 6 0 0 14

w 1 2 8 5 0 0 16

WNW 0 3 24 12 0 0 39

NW 2 6 17 2 0 0 27

NNW 0 4 9 0 0 0 13

Variable 0 0 0 0 0 0 0

Total 6 54 129 38 0 0 227

Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 2

79 of 95 BRAIDWOOD NUCLEAR POWER STATION RADIOACTIVE EFFLUENT RELEASE REPORT FOR 2022 UNIT 1, UNIT 2 and ISFSI (Docket Numbers 50-456, 50-457 and 72-73)

Braidwood Generating Station

Period of Record: July - September 2022 Stability Class - Extremely Stable - 199Ft-30Ft Delta-T (F)

Winds Measured at 203 Feet

Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total

N 1 3 9 0 0 0 13

NNE 0 1 5 1 0 0 7

NE 1 1 1 0 0 0 3

ENE 1 2 2 0 0 0 5

E 1 4 3 0 0 0 8

ESE 2 5 0 0 0 0 7

SE 3 1 1 0 0 0 5

SSE 0 3 0 0 0 0 3

s 0 6 2 0 0 0 8

SSW 2 0 0 0 0 0 2

SW 1 4 1 0 0 0 6

WSW 3 4 4 1 0 0 12 w 2 3 1 1 0 0 7

WNW 1 4 10 10 0 0 25

NW 1 10 13 0 0 0 24

NNW 1 4 3 0 0 0 8

Variable 0 0 0 0 0 0 0

Total 20 55 55 13 0 0 143

Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 2

80 of 95 BRAIDWOOD NUCLEAR POWER STATION RADIOACTIVE EFFLUENT RELEASE REPORT FOR 2022 UNIT 1, UNIT 2 and ISFSI (Docket Numbers 50-456, 50-457 and 72-73)

Braidwood Generating Station

Period of Record: October - December2022 Stability Class - Extremely Unstable - 199Ft-30Ft Delta-T (F)

Winds Measured at 34 Feet

Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total

N 0 0 2 0 0 0 2

NNE 0 0 3 0 0 0 3

NE 0 0 2 0 0 0 2

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 0 0 0 0 0 0 0

s 0 0 0 0 0 0 0

SSW 0 0 0 0 0 0 0

SW 0 0 0 0 0 0 0

WSW 0 0 2 0 0 0 2

w 0 0 2 2 0 0 4

WNW 0 0 0 0 0 0 0

NW 0 0 0 0 0 0 0

NNW 0 0 0 0 0 0 0

Variable 0 0 0 0 0 0 0

Total 0 0 11 2 0 0 13

Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 0

81 of 95 BRAIDWOOD NUCLEAR POWER STATION RADIOACTIVE EFFLUENT RELEASE REPORT FOR 2022 UNIT 1, UNIT 2 and ISFSI (Docket Numbers 50-456, 50-457 and 72-73)

Braidwood Generating Station

Period of Record: October - December2022 Stability Class - Moderately Unstable - 199Ft-30Ft Delta-T (F)

Winds Measured at 34 Feet

Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total

N 0 0 0 0 0 0 0

NNE 0 2 3 0 0 0 5

NE 0 4 1 0 0 0 5

ENE 0 1 0 0 0 0 1

E 0 1 0 0 0 0 1

ESE 0 1 1 0 0 0 2

SE 0 0 0 0 0 0 0

SSE 0 0 0 0 0 0 0

s 0 1 0 1 0 0 2

SSW 0 0 0 0 0 0 0

SW 0 0 0 0 0 0 0

WSW 0 0 3 0 0 0 3

w 0 0 5 2 0 0 7

WNW 0 2 2 1 0 0 5

NW 0 1 1 0 0 0 2

NNW 0 0 0 0 0 0 0

Variable 0 0 0 0 0 0 0

Total 0 13 16 4 0 0 33

Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 0

82 of 95 BRAIDWOOD NUCLEAR POWER STATION RADIOACTIVE EFFLUENT RELEASE REPORT FOR 2022 UNIT 1, UNIT 2 and ISFSI (Docket Numbers 50-456, 50-457 and 72-73)

Braidwood Generating Station

Period of Record: October - December2022 Stability Class - Slightly Unstable - 199Ft-30Ft Delta-T (F)

Winds Measured at 34 Feet

Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total

N 0 1 3 0 0 0 4

NNE 0 2 1 0 0 0 3

NE 0 0 0 0 0 0 0

ENE 0 2 0 0 0 0 2

E 1 2 0 0 0 0 3

ESE 1 0 1 0 0 0 2

SE 0 1 0 0 0 0 1

SSE 0 0 1 0 0 0 1

s 0 0 1 3 0 0 4

SSW 0 4 2 5 1 0 12

SW 0 1 0 0 0 0 1

WSW 0 5 2 0 0 0 7

w 0 0 0 1 1 0 2

WNW 0 0 2 3 0 0 5

NW 0 0 3 0 0 0 3

NNW 0 0 0 0 0 0 0

Variable 0 0 0 0 0 0 0

Total 2 18 16 12 2 0 50

Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 0

83 of 95 BRAIDWOOD NUCLEAR POWER STATION RADIOACTIVE EFFLUENT RELEASE REPORT FOR 2022 UNIT 1, UNIT 2 and ISFSI (Docket Numbers 50-456, 50-457 and 72-73)

Braidwood Generating Station

Period of Record: October - December2022 Stability Class - Neutral - 199Ft-30Ft Delta-T (F)

Winds Measured at 34 Feet

Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total

N 4 10 9 0 0 0 23

NNE 7 9 10 0 0 0 26

NE 8 9 3 0 0 0 20

ENE 11 30 4 0 0 0 45

E 20 58 5 0 0 0 83

ESE 5 21 19 0 0 0 45

SE 2 23 6 1 0 0 32

SSE 0 13 29 13 4 0 59

s 1 7 49 97 10 0 164

SSW 0 5 21 31 20 1 78

SW 3 13 68 29 3 3 119

WSW 2 16 42 19 0 0 79

w 3 18 58 71 21 3 174

WNW 9 53 49 33 27 0 171

NW 11 24 16 0 0 0 51

NNW 5 18 7 0 0 0 30

Variable 0 0 0 0 0 0 0

Total 91 327 395 2 94 85 7 1199

Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 0

84 of 95 BRAIDWOOD NUCLEAR POWER STATION RADIOACTIVE EFFLUENT RELEASE REPORT FOR 2022 UNIT 1, UNIT 2 and ISFSI (Docket Numbers 50-456, 50-457 and 72-73)

Braidwood Generating Station

Period of Record: October - December2022 Stability Class - Slightly Stable - 199Ft-30Ft Delta-T (F)

Winds Measured at 34 Feet

Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total

N 2 4 0 0 0 0 6

NNE 5 9 2 0 0 0 16

NE 6 12 0 0 0 0 18

ENE 22 23 0 0 0 0 45

E 26 15 2 0 0 0 43

ESE 5 11 11 0 0 0 27

SE 5 10 8 0 0 0 23

SSE 4 26 33 1 0 0 64

s 1 16 64 22 0 0 103

SSW 1 6 16 6 0 0 29

SW 2 19 14 0 0 0 35

WSW 4 24 4 0 0 0 32

w 7 39 5 1 1 0 53

WNW 17 26 8 12 2 0 65

NW 8 25 23 0 0 0 56

NNW 6 3 18 2 0 0 29

Variable 0 0 0 0 0 0 0

Total 121 268 208 44 3 0 644

Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 0

85 of 95 BRAIDWOOD NUCLEAR POWER STATION RADIOACTIVE EFFLUENT RELEASE REPORT FOR 2022 UNIT 1, UNIT 2 and ISFSI (Docket Numbers 50-456, 50-457 and 72-73)

Braidwood Generating Station

Period of Record: October - December2022 Stability Class - Moderately Stable - 199Ft-30Ft Delta-T (F)

Winds Measured at 34 Feet

Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total

N 0 0 0 0 0 0 0

NNE 10 9 0 0 0 0 19

NE 5 1 0 0 0 0 6

ENE 6 0 0 0 0 0 6

E 18 1 0 0 0 0 19

ESE 7 2 0 0 0 0 9

SE 4 3 0 0 0 0 7

SSE 3 8 0 0 0 0 11

s 3 5 0 0 0 0 8

SSW 2 7 12 0 0 0 21

SW 2 10 1 0 0 0 13

WSW 3 10 0 0 0 0 13 w 10 9 0 0 0 0 19

WNW 6 1 1 4 0 0 12

NW 4 1 0 0 0 0 5

NNW 1 0 0 0 0 0 1

Variable 0 0 0 0 0 0 0

Total 84 67 14 4 0 0 169

Hours of calm in this stability class: 1 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 0

86 of 95 BRAIDWOOD NUCLEAR POWER STATION RADIOACTIVE EFFLUENT RELEASE REPORT FOR 2022 UNIT 1, UNIT 2 and ISFSI (Docket Numbers 50-456, 50-457 and 72-73)

Braidwood Generating Station

Period of Record: October - December2022 Stability Class - Extremely Stable - 199Ft-30Ft Delta-T (F)

Winds Measured at 34 Feet

Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total

N 1 0 0 0 0 0 1

NNE 3 0 0 0 0 0 3

NE 4 0 0 0 0 0 4

ENE 10 0 0 0 0 0 10

E 20 0 0 0 0 0 20

ESE 4 1 0 0 0 0 5

SE 2 1 0 0 0 0 3

SSE 2 0 0 0 0 0 2

s 2 0 0 0 0 0 2

SSW 5 3 1 0 0 0 9

SW 6 0 0 0 0 0 6

WSW 5 8 0 0 0 0 13

w 6 2 0 0 0 0 8

WNW 6 0 0 0 0 0 6

NW 2 0 0 0 0 0 2

NNW 2 0 0 0 0 0 2

Variable 0 0 0 0 0 0 0

Total 80 15 1 0 0 0 96

Hours of calm in this stability class: 3 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 0

87 of 95 BRAIDWOOD NUCLEAR POWER STATION RADIOACTIVE EFFLUENT RELEASE REPORT FOR 2022 UNIT 1, UNIT 2 and ISFSI (Docket Numbers 50-456, 50-457 and 72-73)

Braidwood Generating Station

Period of Record: October - December2022 Stability Class - Extremely Unstable - 199Ft-30Ft Delta-T (F)

Winds Measured at 203 Feet

Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total

N 0 0 0 2 0 0 2

NNE 0 0 1 3 0 0 4

NE 0 0 1 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 0 0 0 0 0 0 0

SSE 0 0 0 0 0 0 0

s 0 0 0 0 0 0 0

SSW 0 0 0 0 0 0 0

SW 0 0 0 0 0 0 0

WSW 0 0 0 2 0 0 2

w 0 0 0 4 0 0 4

WNW 0 0 0 0 0 0 0

NW 0 0 0 0 0 0 0

NNW 0 0 0 0 0 0 0

Variable 0 0 0 0 0 0 0

Total 0 0 2 11 0 0 13

Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 0

88 of 95 BRAIDWOOD NUCLEAR POWER STATION RADIOACTIVE EFFLUENT RELEASE REPORT FOR 2022 UNIT 1, UNIT 2 and ISFSI (Docket Numbers 50-456, 50-457 and 72-73)

Braidwood Generating Station

Period of Record: October - December2022 Stability Class - Moderately Unstable - 199Ft-30Ft Delta-T (F)

Winds Measured at 203 Feet

Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total

N 0 0 0 0 0 0 0

NNE 0 0 2 3 0 0 5

NE 0 4 1 0 0 0 5

ENE 0 1 0 0 0 0 1

E 0 1 0 1 0 0 2

ESE 0 0 1 0 0 0 1

SE 0 0 0 0 0 0 0

SSE 0 0 0 0 0 0 0

s 0 0 1 1 0 0 2

SSW 0 0 0 0 0 0 0

SW 0 0 0 0 0 0 0

WSW 0 0 1 4 0 0 5

w 0 0 1 4 0 0 5

WNW 0 0 3 1 1 0 5

NW 0 0 1 1 0 0 2

NNW 0 0 0 0 0 0 0

Variable 0 0 0 0 0 0 0

Total 0 6 11 15 1 0 33

Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 0

89 of 95 BRAIDWOOD NUCLEAR POWER STATION RADIOACTIVE EFFLUENT RELEASE REPORT FOR 2022 UNIT 1, UNIT 2 and ISFSI (Docket Numbers 50-456, 50-457 and 72-73)

Braidwood Generating Station

Period of Record: October - December2022 Stability Class - Slightly Unstable - 199Ft-30Ft Delta-T (F)

Winds Measured at 203 Feet

Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total

N 0 0 3 1 0 0 4

NNE 0 1 2 0 0 0 3

NE 0 0 0 0 0 0 0

ENE 0 2 0 0 0 0 2

E 1 1 1 0 0 0 3

ESE 0 1 0 1 0 0 2

SE 0 0 1 0 0 0 1

SSE 0 0 1 0 1 0 2

s 0 1 1 0 2 1 5

SSW 0 1 2 1 4 1 9

SW 0 3 0 0 0 0 3

WSW 0 2 3 1 0 0 6

w 0 0 0 1 0 1 2

WNW 0 0 1 1 3 0 5

NW 0 0 0 3 0 0 3

NNW 0 0 0 0 0 0 0

Variable 0 0 0 0 0 0 0

Total 1 12 15 9 10 3 50

Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 0

90 of 95 BRAIDWOOD NUCLEAR POWER STATION RADIOACTIVE EFFLUENT RELEASE REPORT FOR 2022 UNIT 1, UNIT 2 and ISFSI (Docket Numbers 50-456, 50-457 and 72-73)

Braidwood Generating Station

Period of Record: October - December2022 Stability Class - Neutral - 199Ft-30Ft Delta-T (F)

Winds Measured at 203 Feet

Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total

N 1 10 7 6 2 0 26

NNE 1 9 3 10 0 0 23

NE 2 11 4 4 0 0 21

ENE 4 13 20 1 0 0 38

E 1 24 37 22 8 0 92

ESE 1 9 14 11 8 1 44

SE 2 6 16 3 3 0 30

SSE 0 6 19 19 21 14 79

s 0 1 16 33 82 29 161

SSW 0 3 15 26 36 13 93

SW 1 5 25 50 11 6 98

WSW 0 6 24 51 13 0 94

w 3 9 13 63 44 53 185

WNW 3 16 48 35 16 13 131

NW 2 10 18 19 8 0 57

NNW 3 9 11 4 0 0 27

Variable 0 0 0 0 0 0 0

Total 24 147 290 357 252 129 1199

Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 0

91 of 95 BRAIDWOOD NUCLEAR POWER STATION RADIOACTIVE EFFLUENT RELEASE REPORT FOR 2022 UNIT 1, UNIT 2 and ISFSI (Docket Numbers 50-456, 50-457 and 72-73)

Braidwood Generating Station

Period of Record: October - December2022 Stability Class - Slightly Stable - 199Ft-30Ft Delta-T (F)

Winds Measured at 203 Feet

Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total

N 0 3 4 0 0 0 7

NNE 0 2 5 5 0 0 12

NE 1 9 13 2 0 0 25

ENE 1 8 23 1 0 0 33

E 1 6 16 18 1 3 45

ESE 0 7 4 7 5 4 27

SE 1 3 8 7 0 0 19

SSE 0 6 7 34 17 1 65

s 1 3 6 56 39 5 110

SSW 0 4 6 21 6 0 37

SW 0 4 17 11 1 0 33

WSW 1 6 16 12 0 0 35

w 2 3 21 15 2 1 44

WNW 1 2 21 19 2 12 57

NW 0 2 18 28 16 0 64

NNW 0 6 8 12 5 0 31

Variable 0 0 0 0 0 0 0

Total 9 74 193 248 94 26 644

Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 0

92 of 95 BRAIDWOOD NUCLEAR POWER STATION RADIOACTIVE EFFLUENT RELEASE REPORT FOR 2022 UNIT 1, UNIT 2 and ISFSI (Docket Numbers 50-456, 50-457 and 72-73)

Braidwood Generating Station

Period of Record: October - December2022 Stability Class - Moderately Stable - 199Ft-30Ft Delta-T (F)

Winds Measured at 203 Feet

Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total

N 0 2 0 0 0 0 2

NNE 0 0 3 5 0 0 8

NE 0 1 7 5 0 0 13

ENE 0 0 4 0 0 0 4

E 0 0 9 1 0 0 10

ESE 0 1 6 5 0 0 12

SE 0 5 5 0 0 0 10

SSE 0 2 4 2 0 0 8

s 0 0 10 2 0 0 12

SSW 1 0 4 8 0 0 13

SW 1 1 10 12 3 0 27

WSW 0 4 5 4 0 0 13 w 0 0 7 4 0 0 11

WNW 1 0 10 2 2 3 18

NW 0 0 4 1 0 0 5

NNW 1 1 2 0 0 0 4

Variable 0 0 0 0 0 0 0

Total 4 17 90 51 5 3 170

Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 0

93 of 95 BRAIDWOOD NUCLEAR POWER STATION RADIOACTIVE EFFLUENT RELEASE REPORT FOR 2022 UNIT 1, UNIT 2 and ISFSI (Docket Numbers 50-456, 50-457 and 72-73)

Braidwood Generating Station

Period of Record: October - December2022 Stability Class - Extremely Stable - 199Ft-30Ft Delta-T (F)

Winds Measured at 203 Feet

Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total

N 0 4 1 0 0 0 5

NNE 0 0 1 0 0 0 1

NE 0 2 1 0 0 0 3

ENE 1 1 0 0 0 0 2

E 0 1 2 4 0 0 7

ESE 1 1 7 4 0 0 13

SE 0 1 2 2 0 0 5

SSE 0 3 0 1 0 0 4

s 0 3 1 0 0 0 4

SSW 0 4 6 1 0 0 11

SW 0 4 4 1 1 0 10

WSW 0 2 8 4 0 0 14

w 1 3 1 2 0 0 7

WNW 1 4 0 1 0 0 6

NW 0 2 0 1 0 0 3

NNW 1 3 0 0 0 0 4

Variable 0 0 0 0 0 0 0

Total 5 38 34 21 1 0 99

Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 0

94 of 95 BRAIDWOOD NUCLEAR POWER STATION RADIOACTIVE EFFLUENT RELEASE REPORT FOR 2022 UNIT 1, UNIT 2 and ISFSI (Docket Numbers 50-456, 50-457 and 72-73)

APPENDIX D: ERRATA

There were no errors to previous reports identified in 2022.

95 of 95

BW230023, Annual Radioactive Effluent Release Report

Text

SUMMARY

SUMMARY

Navigation menu

Search