U-604802, Submittal of 2023 Annual Radioactive Effluent Release Report
| ML24115A061 | |
| Person / Time | |
|---|---|
| Site: | Clinton  |
| Issue date: | 04/10/2024 |
| From: | Krukowski A Constellation Energy Generation |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| U-604802 | |
| Download: ML24115A061 (1) | |
Text
~~:c~~~-.. -* Constellation Clinton Power Station 8401 Power Road Clinton, IL 61727 U-604802 April 10, 2024 Document Control Desk U.S. Nuclear Regulatory Commission Washington, DC 20555 Clinton Power Station, Unit 1 Facility Operating License No. NPF-62
,NRC Docket No. 50-461 10 CFR 50.36a
Subject:
Clinton Power Station 2023 Annual Radioactive Effluent Release Report Clinton Power Station is submitting the 2023 Annual Radioactive Effluent Release Report. This report is submitted in accordance with Technical Specification requirement 5.6.3, "Radioactive Effluent_ Release Report," and covers the period from January 1, 2023, through December 31, 2023.
There are no regulatory commitments contained in this report.
Questions on this letter may be directed to Mr. Mohamad Fakhreddine, Chemistry Manager, at 217-937-3200.
Respectfully, Andrew Krukowski Plant Manager Clinton Power Station
Attachment:
Radioactive Effluent Release Report cc:
Regional Administrator NRC Region Ill NRC Senior Resident Inspector - Clinton Power Station Office of Nuclear Facility Safety - Illinois Emergency Management Agency
Constellation SM January 01, 2023 - December 31, 2023 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT CLINTON POWER STATION - DOCKET NUMBER 50-461 Prepared by:
Rachel Johnston Clinton Clean Energy Center Page 1 of 114
TABLE OF CONTENTS SECTION#
TITLE PAGE 1
Executive Summary 6
2 Introduction 7
3 Supplemental Information 13 4
Radioactive Effluent Data 17 5
Solid Waste Disposal Information 28 6
Dose Measurements and Assessments 31 7
Meteorological Data and Dispersion Estimates 43 8
ODCM Operational Remedial Requirement Report 102 9
Changes to Radioactive Waste Treatment Systems 106 10 New Locations for Dose Calculation and/or Environmental Monitoring 107 11 Corrections to Data Reported in Previous Reports 110 12 Changes to the Offsite Dose Calculation Manual 114 Page 2 of 114
LIST OF TABLES TABLE#
TITLE PAGE Gaseous Effluents - Summation of All Releases 17 1
1A Air Doses Due to Gaseous Releases 18 18 Doses to a Member of the Public Due to Radioiodines, Tritium, 18 Carbon-14, and Particulates in Gaseous Releases 2
Gaseous Effluents - Nuclides Released 19 3
Radioactive Gaseous Waste LLD Values 20 4
Waterborne Effluents - Summation of All Releases 22 5
Waterborne Effluents - Nuclides Released 23 6
Radioactive Liquid Waste LLD Values 24 7
Solid Waste and Irradiated Fuel Shipments 29 8
Maximum Offsite Doses and Dose Commitments to Members of the Public 32 in Each Sector Calculated Doses to Members of the Public During Use of the Department 9
of Natural Resources Recreation Area in the East-Southeast Sector within 36 the CPS Site Boundary 10 Calculated Doses to Members of the Public During Use of the Road in the 37 Southeast Sector within the CPS Site Boundary 11 Calculated Doses for the Residents in the South-Southeast Sector within 38 the CPS Site Boundary 12 Calculated Doses for the Residents in the Southwest Sector within the CPS 39 Site Boundary 13 Calculated Doses to Members of the Public During Use of the Agricultural 40 Acreage in the South-Southwest Sector within the CPS Site Boundary 14 Calculated Doses for the Residents in the West-Southwest Sector within 41 the CPS Site Boundary 15 Calculated Doses to Members of the Public During Use of Clinton Lake in 42 the Northwest Sector within the CPS Site Boundary 16 Meteorological Data Availability 44 17 Classification of Atmospheric Stability 45 18 Joint Wind Frequency Distribution by Stability Class 46 Page 3 of 114
19 Nearest Residence 107 20 Nearest Broad leaf Garden 108 21 Nearest Milking Animal 109 Page 4 of 114
LIST OF FIGURES FIGURE#
TITLE PAGE 1
CPS Airborne Effluent Release Points 8
2 CPS Waterborne Effluents Release Pathway 9
3 Effluent Exposure Pathways 11 4
Areas Within the CPS Site Boundary Open to Members of the Public 35 Page 5 of 114
SECTION 1 EXECUTIVE
SUMMARY
The Annual Radioactive Effluent Release Report (ARERR) is a detailed description of gaseous and liquid radioactive effluents released from Clinton Power Station (CPS) and the resulting radiation doses for the period of January 01, 2023 through December 31, 2023. During first quarter of 2023, Exelon split to form Constellation. Clinton Power Station also underwent a name change to Clinton Clean Energy Center, but will be referred to as Clinton power station and CPS for the entirety of this document. This report also includes a detailed meteorological section providing weather history of the surrounding area during this period. The information in the ARERR is used to calculate the offsite dose to our public.
The report also includes a summary of the amounts of radioactive material contained in solid waste that is packaged and shipped to a federally approved disposal/burial facility offsite.
Additionally, this report notifies the U.S. Nuclear Regulatory Commission (NRC) staff of changes to CPS's Offsite Dose Calculation Manual (ODCM), as well as exceptions to the CPS effluent monitoring program and a summary of events that must be reported in accordance with ODCM Section 6.2.
The NRC requires that nuclear power facilities be designed, constructed and operated in such a manner as to maintain radioactive effluent releases to unrestricted areas [ls !:,ow f!J.s E_easonably [lchievable (ALARA). To ensure compliance with this criterion, the NRC has established limitations governing the release of radioactivity in effluents.
During 2023, effluent releases from CPS operations were well within these federally required limits. The maximum annual radiation dose delivered to the inhabitants of the area surrounding CPS, due to radioactivity released from the station, was 2.42E-01 mRem (millirem).
The radiation dose to the public in the vicinity of CPS was calculated by using the concentration of radioactive nuclides from each gaseous effluent release coupled with historical weather conditions. The dose from CPS gaseous radioactive effluents is only a small fraction of the limit (1.61E+00%) for the maximum exposed member of the public. Integrated Leak Rate Testing (ILRT) of the Drywell and Containment was performed during C1R21. In this evolution, containment and drywell were depressurized through two pathways: penetration in the steam tunnel (which releases to HVAC stack) and pipe outside the Service Building (not an ODCM release pathway).
Sampling and analysis were performed on both release paths during depressurization and no activity was detected. More detail is provided under Section 4. There were no liquid effluent releases in 2023. As such, there was no dose received by the public from the liquid radioactive effluent pathway.
Page 6 of 114
SECTION 2 INTRODUCTION CPS is located in Harp Township, DeWitt County approximately six miles east of the city of Clinton in east-central Illinois. CPS is a ~1,120 megawatt gross electrical power output boiling water reactor. Initial fuel load commenced in September of 1986 with initial criticality of the reactor occurring on February 27, 1987. Commercial operation commenced in April 1987 and the reactor reached 100% power for the first time on September 15, 1987.
CPS releases airborne effluents via two gaseous effluent release points to the environment. They are the Common Station Heating, Ventilating, and Air Conditioning (HVAC)
Vent Stack and the Standby Gas Treatment System (SGTS) Vent as shown in Figure 1. As specified in the ODCM, the surveillance program consists of continuous monitoring of each gaseous effluent release point and periodic sampling and analysis.
CPS is licensed to release radioactive liquid effluents in a batch mode, however there were no radioactive liquid releases in 2023 at CPS. Each release would have been sampled and analyzed prior to release if this were to occur. Depending upon the amount of activity in a release, liquid effluents would vary from 10 to 300 gallons per minute (GPM). This flow rate is added to the combined flows from both Plant Service Water and Circulating Water streams which range from approximately 5,000 to 567,000 gpm. The combined flow stream enters the seal well, just prior to the 3.4-mile discharge flume which releases into Lake Clinton, as depicted in Figure 2.
Processing and Monitoring CPS controls effluents to ensure radioactivity released to the environment is maintained ALARA and does not exceed federal release limit criteria. Effluent controls include the operation of radiation monitoring systems within the plant as well as an offsite environmental analysis program. In-plant radiation monitoring systems are used to provide a continuous indication of radioactivity in effluent streams. Some are also used to coi'lect particulate and radioiodine samples. Radioactive effluent related samples are analyzed in a controlled laboratory environment to identify the specific concentration of those radionuclides being released.
Sampling and analysis provides a more sensitive and precise method of determining effluent composition to complement the information provided by real-time radiation monitoring instruments.
Beyond the plant itself, a Radiological Environmental Monitoring Program (REMP) is maintained in accordance with Federal Regulations. The purpose of the REMP program is to assess the radiological impact on the environment due to the operation of CPS. Implicit in this charter is the license requirement to trend and assess radiation exposure rates and radioactivity concentrations that may contribute to dose to the public. The program consists of two phases; pre-operational and operational. During the pre-operational phase of the program, the baseline for the local radiation environment was established. The operational phase of the program includes the objective of making confirmatory measurements to verify that the in-plant controls for the release of radioactive material are functioning as designed. Assessment of the operational impact of CPS on the environment is based on data collected since initial criticality of the reactor.
Page 7 of 114
FIGURE 1 CPS AIRBORNE EFFLUENT RELEASE POINTS FUEL BUILDIHG ROOF a.. aoo*o*
TURBINE BUI.DING ROOF B.. 876'0" RADWASTE ANO MACHINE SHOP BUILDING ROOFEL. 781 10*
COIITROL ROOM AIR HANDLING UNITS I
L._ _____ :=J/
SQTS FllJ'ER UNITS
(~ EL. 710'0")
Release Point Height (feet)
Building Height (feet)
Release Point Geometry Release Point Area (ft 2)
Release Point Diameter (feet)
Annual Average Flow Rate (ft3/sec)
Vertical Exit Velocity (feet/sec)
- Effective 2{A/n)112 diameter HVAC Exhaust Vent 200 190 Duct 120 12*
3,945 33 SGTS Exhaust Vent 200 190 Pipe 2
1 67 41 Page 8 of 114
FIGURE 2 CPS WATERBORNE EFFLUENTS RELEASE PATHWAY PLANT SERVlCE WATER FtW.BLOO."
.,(ll!'.!\025,000 ~.
l
- CAT lEAST fiOOO Gl'Ml
~/;~,
r:. *~-........,~:r--
I UCl.Ulll RAQWA$TE DISCHARGE LINE (fo-OR 6o-300 GPM>
@.). RADIATION.MONITOR
- l.JSIMITRIP SEtPOIKI' C,l1.CUt.ATED BASED Off E#.Cti BATCHISOiOPIO#.WJYSts I.NO DtWTION Fl.OW H lSOLATlON VALVE TERMIW3'ES AaEASE OK fflOH MllliilON.
HlGH REJ.EASE Rl1N ~
OR l.f1N Dlt.UTION Fl.OW Mi SEALWELL E) COMPOSITE SAMPLER COl1E(;I'$ /.PPR0)3WJ'ElY 20 ml fMRY GOMINUTES FROM 11£ D!Sa-1>.RGE FUJMEFORMOtmilY l.twnts PLANTClRCULATING _.,.._------- '------------
LAKE CLINTON WATER (0-567,000 GPMl DISCHARGE FLUME 3.4 MILES Page 9 of 114
Exposure Pathways A radiological exposure pathway is the vehicle by which the public may become exposed to radioactivity released from nuclear facilities. The major pathways of concern are those that could cause the highest calculated radiation dose. These pathways are determined from the type and amount of radioactivity released, the environmental transport mechanism and how the plant environs are used (i.e., residence, gardens, etc.}. The environmental transport mechanism includes the historical meteorological characteristics of the area that are defined by wind speed and wind direction. This information is used to evaluate how the radionuclides will be distributed within the surrounding area. The most important factor in evaluating the exposure pathway is the use of the environment by the public living around CPS. Factors such as location of homes in the area, use of cattle for milk and the growing of gardens for vegetable consumption are important considerations when evaluating exposure pathways. Figure 3 illustrates the effluent exposure pathways that were considered.
The radioactive gaseous effluent exposure pathways include direct radiation, deposition on plants and soil and inhalation by animals and humans. The radioactive liquid effluent exposure pathways include fish consumption and direct exposure from Clinton Lake.
Dose Assessment Whole body radiation involves the exposure of all organs in the human body to ionizing radiation. Most naturally occurring background radiation exposures consist of whole body exposure although specific organs can receive radiation exposure from distinct radionuclides.
These radionuclides enter the body through inhalation and ingestion and seek different organs depending on the nuclide. For example, radioactive iodine selectively concentrates in the thyroid, radioactive strontium in mineralized bone, and radioactive cesium collects in muscle and liver tissue.
The total dose to organs from a given radionuclide also depends on the amount of activity in the organ and the amount of time that the radionuclide remains in the body. Some radionuclides remain for very short periods of time due to their rapid radioactive decay and/or elimination rate from the body, while others may remain longer.
Radiation dose to the public in the area surrounding CPS is calculated for each release using historical weather conditions coupled with the concentrations of radioactive material present. The dose is calculated for all sixteen geographical sectors surrounding CPS and includes the location of the nearest residents, vegetable gardens producing broad leaf vegetables and dairy animals in all sectors. The calculated dose also uses the scientific concept of a "maximum exposed individual" and "standard man," and the maximum use factors for the environment, such as how much milk an average person consumes and how much air a person breathes in a year.
Section 6 contains more detailed information on dose to the public.
Page 10 of 114
ANIMALS (MILK, MEAT)
CONSUMED BY ANIMALS FIGURE 3 EFFLUENT EXPOSURE PATHWAYS CONSUMED BY PEOPLE
~
~
CONSUMED BY PEOPLE
/
I 1'CONSUMED BY PEOPLE
\
CLINTON POWER STATION RELEASES DILUTED BY LAKE FISH Page 11 of 114
Gaseous Effluents Gaseous effluent radioactivity released from CPS is classified into two (2) categories.
The first category is noble gases. The second catego ry consists of 1131, 1133, H3, C14 and all radionuclides in particulate form with radioactive half-lives greater than eight (8) days. Noble gases - such as xenon and krypton - are biologically and chemically non -reactive. As such, these radionuclides - specifically Kr85m, Xe 133 and Xe 135 - are the major contributors to external doses.
1131, 1133, H3, C14 and radionuclides in particulate form with radioactive half-lives greater than eight (8) days are the major contributors to internal doses.
Liquid Effluents Liquid effluents may originate from two (2) sources at CPS. The first is effluent from the Radioactive Waste Treatment System. This water is demineralized prio r to release, and samples are taken after the tank has been allowed to adequately recirculate. The second is from heat exchanger leaks found in closed cooling water systems that service radioactively contaminated systems. This second source would be considered an abnormal release if to occur. As a matter of station management commitment, CPS strives to be a zero (O) radioactive liquid release plant. The last radioactive liquid release occurred in September of 1992.
Solid Waste Shipments To reduce the radiation exposure to personnel and mainta in the federally required ALARA concept, the NRC and the Department of Transportation (DOT) have established limits on the types of rad ioactive waste and the amount of radioactivity that may be packaged and shipped offsite for burial or disposal. To ensure that CPS is complying with these regulations, the types of waste and the radioactivity present are reported to the NRC.
Page 12 of 114
I.
REGULATORY LIMITS SECTION 3 SUPPLEMENTAL INFORMATION
. The NRC requires nuclear power facilities to be designed, constructed and operated in such a way that the radioactivity in effluent releases to unrestricted areas is kept ALARA. To ensure these criteria are met, each license authorizing nuclear reactor operation includes the Offsite Dose Calculation Manual governing the release of radioactive effluents. The ODCM designates the limits for release of effluents, as well as the limits for doses to the general public from the release of radioactive liquids and gases. These limits are taken from Title 10 of the Code of Federal Regulations, Part 50, Appendix I (10CFR50 Appendix I), Title 10 of the Code of Federal Regulations, Part 20.1301 (10CFR20.1301) and Section 5.5.4 of Clinton Station's Technical Specifications. Maintaining effluent releases within these operating limitations demonstrates compliance with ALARA principles.
Specific iimit information is given below.
A.
Gaseous Effluents
- 1.
The maximum permissible concentrations to limit doses for gaseous effluents shall not exceed the values provided within Section 5.5.4.g of Station's Technical Specifications. To ensure these concentrations are not exceeded, dose rates due to radioactive materials released in gaseous effluents from the site to areas at and beyond the site area boundary shall be limited to the following:
- a.
Noble gases Less than or equal to 500 mRem/year to the total body.
Less than or equal to 3,000 mRem/year to the skin.
- b.
1131, 1133, H3, and all radionuclides in particulate form with radioactive half-lives greater than eight (8) days:
Less than or equal to 1,500 mRem/year to any organ.
- 2.
In accordance with 10CFR50 Appendix I, air dose due to noble gases released in gaseous effluents to areas at and beyond the site boundary shall be limited to the following:
- a.
Less than or equal to 5 mRad for gamma radiation and less than or equal to 10 mRad for beta radiation during any calendar quarter.
- b.
Less than or equal to 10 mRad for gamma radiation and less than or equal to 20 mRad for beta radiation during any calendar year.
Page 13 of 114
- 3.
In accordance with 10CFR50 Appendix I, dose to a member of the public (from 1131, 1133, H3, and all radionuclides in particulate form with radioactive half-lives greater than eight (8) days) in gaseous effluents released to areas at and beyond the site boundary shall be limited to the following values:
- a.
Less than or equal to 7.5 mRem to any organ, during any calendar quarter.
- b.
Less than or equal to 15 mRem to any organ, during any calendar year.
B. Liquid Effluents
- 1.
The concentration of radioactive material released in liquid effluents to unrestricted areas shall be limited to the values provided within Section 5.5.4.b of Station's Technical Specifications for radionuclides other than dissolved or entrained noble gases. For dissolved or entrained noble gases, the concentration shall be limited to 2.00E-04 µCi/ml total activity.
- 2.
The dose or dose commitment to a member of the public from radioactive materials in liquid effluents released to unrestricted areas shall be limited to:
- a.
Less than or equal to 1.5 mRem to the total body and less than or equal to 5 mRem to any organ during any calendar quarter.
- b.
Less than or equal to 3 mRem to the total body and less than or equal to 10 mRem to any organ during any calendar year.
The above gaseous and liquid effluent limits are just a fraction of the dose limits established by the Environmental Protection Agency (EPA) found within Environmental Dose Standard Title 40, Code of Federal Regulations, Part 190 (40CFR190). The EPA has established dose limits for members of the public in the vicinity of a nuclear power plant. These dose limits are:
Less than or equal to 25 mRem per year to the total body.
Less than or equal to 75 mRem per year to the thyroid.
Less than or equal to 25 mRem per year to any other organ.
II.
AVERAGE ENERGY The CPS ODCM limits the dose equivalent rates due to the release of fission and activation gases to less than or equal to 500 mRem per year to the total body and less than or equal to 3,000 mRem per year to the skin. These limits are based on dose calculations using actual isotopic concentrations from our effluent release streams and not based upon the gross count rate from our monitoring systems. Therefore, the average beta and gamma energies for gaseous effluents as described in Regulatory Guide 1.21, "Measuring, Evaluating, and Reporting Radioactivity in Solid Wastes and Releases of Radioactive Materials in Liquid and Gaseous Effluents from Light-Water-Cooled Nuclear Power Plants," are not applicable.
Page 14 of 114
111.
MEASUREMENT AND APPROXIMATIONS OF TOTAL RADIOACTIVITY A.
Fission and Activation Gases
- 1.
Gas samples are collected weekly and are counted on a high purity germanium detector (HPGe) for principal gamma emitters. The HVAC and SGTS release points are continuously monitored and the average release flow rates for each release point are used to calculate the total activity released during a given time period.
- 2.
Tritium is also collected by passing a known volume of the sample stream through a gas washer containing a known quantity of demineralized water. The collected samples are distilled and analyzed by liquid scintillation. The tritium released was calculated for each release point from the measured tritium concentration, the volume of the sample, the tritium collection efficiency, and the respective stack exhaust flow rates.
- 3.
Carbon-14 release values were estimated using the methodology included in the EPRI Technical Report 1021106, using the 2023 Clinton Power.Station specific parameters of normalized Carbon-14 production rate of 5.049 Ci/GWt-yr, a gaseous release fraction of 0.99, a Carbon-14 carbon dioxide fraction of 0.95, a reactor power rating of 3473 MWt, and equivalent full power operation of 308.4 days.
B.
Iodines Iodine is continuously collected on a silver zeolite cartridge filter via an isokinetic sampling assembly from each release point. Filters are normally exchanged once per week and then analyzed on an HPGe system. The flow rates for each release point are averaged over the duration of the sampling period and these results - along with specific isotopic concentrations -
are then used to determine the total activity released during the time period in question.
C.
Particulates Particulates are continuously collected on a filter pa per via an isokinetic sampling assembly on each release point. Filters are normally exchanged once per week and then analyzed on an HPGe system. The flow rates for each release point are averaged over the duration of the sampling period and these results - along with specific isotopic concent~ations - are then used to determine the total activity released during the time period in question.
D.
Liquid Effluents Each tank of liquid radwaste is recirculated for at least two (2) tank volumes, sampled and analyzed for principal gamma emitters prior to release. Each sample tank is recirculated for a sufficient amount of time prior to sampling ensuring that a representative sample is obtained.
Samples are then analyzed on an HPGe system and liquid release permits are generated based upon the values obtained from the isotopic analysis and the most recent values for H 3, gross alpha, Fess, Sr89 and Sr90. An aiiquot based on release volume is saved and added to composite containers. The concentrations of composited isotopes and the volumes of the releases Page 15 of 114
associated with these composites establish the proportional relationships that are then utilized for calculating the total activity released for these isotopes. However, there has not been a radioactive liquid release since September of 1992.
IV.
DESCRIPTION OF ERROR ESTIMATES Estimates of measurement and analytical error for gaseous and liquid effluents are calculated as follows:
where:
Er= total percent error E1... EN = percent error due to calibration standards, laboratory analysis, instruments, sample flow, etc.
Page 16 of 114
SECTION 4 RADIOACTIVE EFFLUENT DATA TABLE 1 Gaseous Effluents - Summation Of All Releases Data Period: January 01, 2023 - December 31, 2023 Continuous Mixed Mode
,~
1:~i=tssipn~'J:J\:e\iyatJcfn'(§asJ!~iI'{,,.'
- 1.
Total Release Ci
- 2.
Average release rate
µCi/sec for period 4.48E-01 2.20E+00 l.53E+00
- 3.
H~})9ltin~f.
- 1.
- 2.
Average release rate
µCi/sec for period l.23E-06 6.87E-07 0.00E+00
- 3.
Percent of ODCM Limit t.~.: i>if~iful~t~~{?(?':'!}*.*
- 1.
Particulates with Ci half-lives >8 days l.83E-05 6.02E-05 3.33E-04
- 2.
Average release rate
µCi/sec for period 2.35E-06 7.66E-06 4.19E-05
- 3.
,,;o;*.i.tritiiirH'
- 1.
Total Release
- 2.
Average release rate
µCi/sec for period 2.19E+00 8.29E-01 6.25E-01
- 3.
~t.'..,G19i!;iAi pH~}
- 1.
- 2.
Average release rate for period
- FA'.carr:~011}1~*_,:.t~,,;./f.*
"'-[-,-.;:c '
- 1.
Total Release
- 2.
Average release
µCi/sec Rate for period 5.20E-07 4.62E-07 4.25E-07 7.llE-01 0.00E+00 5.93E-05 7.47E-06 4.87E-01 4.74E-07 Applicable limits are expressed in terms of dose. See Tables 1A and 1B of this report.
Page 17 of 114
Gamma Beta Gamma Beta Bone Liver TBody Thyroid Kidney Lung GILLI 5
mRad 10 mRad TABLE lA Air Doses Due to Gaseous Releases Doses per Quarter (mRad) 1.61E-04 3.22E-03 9.13E-04 l.83E-02 6.43E-04 5.69E-05 5.69E-04 3.22E-04 3.22E-03 2.27E-04 Doses per Year (mRad) 10 mRad 2.02E-03 20 mRad 7.llE-04 TABLE lB 1.29E-02 2.98E-04 2.27E-03 1.05E-04 2.02E-02 3.55E-03 Doses to a Member of the Public Due to Radioiodines, Tritium, Carbon-14, and Particulates in Gaseous Release Doses per Quarter (mRem) 7.5 mRem 6.59E-02 8.79E-01 5.92E-02 7.89E-01 5.SlE-02 7.35E-01 6.14E-02 7.5 mRem 3.94E-04 5.25E-03 l.50E-04 2.00E-03 l.25E-04 l.67E-03 8.98E-05 7.5 mRem l.36E-02 l.81E-01 l.20E-02 l.60E-01 1.llE-02 1.48E-01 l.24E-02 7.5 mRem 4.34E-04 5.79E-03 l.64E-04 2.19E-03 1.12E-04 1.49E-03 8.75E-05 7.5 mRem 3.93E-04 5.24E-03 1.48E-04 l.97E-03 1.16E-04 l.55E-03 8.82E-05 7.5 mRem 3.93E-04 5.24E-03 l.48E-04 l.97E-03 l.14E-04 l.52E-03 8.79E-05 7.5 mRem 3.93E-04 5.24E-03 l.49E-04 1.99E-03 1.23E-04 l.64E-03 8.94E-05 Doses per Year (mRem) 5.96E-03 1.05E-03
)'-l~k:::,;
t!,'i;,;~t 8.18E-01 l.20E-03 l.65E-01 l.17E-03 l.18E-03 l.17E-03 l.19E-03
- ::~t:;;type ofbJga11::~::;f :;; i~,;ooe::M\t.1m11/'.:' ~ ;:,\ti 1
'/:, C/i:f'Ps~, J, '},
5',,,,
,',.\":;J\1 Wo(ti111tf1
- '.. 1,~r Bone 15 mRem 2.42E-01 l.61E+00 Liver 15 mRem 7.58E-04 5.06E-03 TBody 15 mRem 4.91E-02 3.27E-01 Thyroid 15 mRem 7.98E-04 5.32E-03 Kidney 15 mRem 7.46E-04 4.97E-03 Lung 15 mRem 7.43E-04 4.95E-03 GI LLI 15 mRem 7.55E-04 5.04E-03 Page 18 of 114
Mixed Mode Release Elevated Release Ground-Level Release
/*::,>'*
Uriits :.
A. Fis*sion Gases xe13s Ci Krssm Ci Xe133 Ci Kras Ci Ar41 Ci Total for Period Ci
- B. Iodines 1131 Ci 1133 Ci Total for Period Ci C. Particulates Co6o Ci y91m [2]
Ci Nb9s Ci ce141 Ci Cr51 Ci Mns4 Ci Na24 r21 Ci Cd109 Ci Cs138 [21 Ci Coss Ci zn65 Ci Total for Period Ci o:. Gross Alpha Gross Alpha Ci E. Tr.it.iur:ri Total for Period Ci F..' Carborr~14 Total for Period Ci TABLE 2 Gaseous Effluents - Nuclides Released Clinton Power Station YEAR: 2023 X
I Continuous Mode Batch Mode Quarterfa!l],
Quarf¢r' ;i[l]'
- -*** Q**,..
- 3111 ?tI
..,.,.'.uarter.,
i..
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD 3.48E+00 1.73E+0l 1.22E+0l 3.48E+00 1.73E+0l 1.22E+0l 9.57E-06 5.40E-06
<LLD 2.09E-05
<LLD
<LLD 3.0SE-05 5.40E-06
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD 1.83E-05 6.02E-05 3.33E-04
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD 1.83E-05 6.02E-05 3.33E-04
<LLD
<LLD
<LLD
'\, c'
~ '; : r 1.71E+0l 6.SlE+00 4.97E+00 4.04E+00 3.63E+00 3.38E+00 X
Qu-arte.h 4_[;1-l
<LLD
<LLD
<LLD
<LLD 5.65E+00 5.65E+00
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD 5.93E-05
<LLD
<LLD
<LLD
<LLD
<LLD 5.93E-05
<LLD 3.87E+00 3.77E+00
[ll The lower the value of the actual sample activity - with respect to background activity -
the greater the counting error. Proportionally, large errors are reported for the various components of CPS gaseous effluents because of their consistent low sample activity.
[21 Half-life is less than 8 days, therefore not included in Table 1 Summation.
Page 19 of 114
TABLE 3 Radioactive Gaseous Waste LLD Values Lower ilimit of Detectio'n 8 TvPe;oi=:Acr,v,Ti ANAL vs,s:;
..,>;;;x,.,
- (µCi/cc) **
Principal Gamma Emitters, sl.00E-04
[Noble Gases] b,c H3C sl.00E-06 1131 d sl.00E-12 1133 d sl.00E-10 Principal Gamma Emitters, sl.00E-11
[Particulates] b,e srs9, Srgo g sl.00E-11 Gross Alphaf sl.00E-11 Table 3 Notations:
a The Lower Limit of Detection (LLD) as defined for purposes of these specifications, as an "a priori" determination of the smallest concentration of radioactive material in a sample that will yield a net count - above system background - that will be detected with a 95%
probability and with a low (5%) probability of incorrectly concluding that a blank observation represents a "real" signal.
For a particular measurement system, which may include radiochemical separation:
Where:
LLD =
4.66
- Sb E
- V
- 2.22 x 1 06
- Y
- e-Mt LLD is the "a priori" lower limit of detection as defined above, as µCi per unit mass or volume, Sb is the standard deviation of the background counting rate or of the counting rate of a blank sample as appropriate, in counts per minute (cpm),
Page 20 of 114
Table 3 Notations (continued):
Eis the counting efficiency, in counts per disintegration, Vis the sample size in units of mass or volume, 2.22E+06 is the number of disintegrations per minute (dpm) per microcurie, Vis the fractional radiochemical yield, when applicable, 11, is the radioactive decay constant for the particular radionuclide (sec-1) and lit for plant effluents is the elapsed time between the midpoint of sample collection and the time of counting (sec).
Typical values of E, V, V, and lit should be used in the calculation.
The LLD is defined as an a priori (before the fact) limit representing the capability of a measurement system1 and not as an a posteriori (after the fact) limit for a particular measurement.
b The principal gamma emitters for which the LLD specification applies include the following radionuclides: Kr 87, Kr88, Xe 133, Xe133m, Xe 135, and Xe 138 in noble gas releases and Mn 54, Fe 59, Co 58, Co 60, Zn 65, Mo99, 1131, 1133, Cs134, Cs137, Ce 141, and Ce 144 in iodine and particulate releases. This list does not mean that only these nuclides are to be considered.
Other gamma peaks that are identifiable - together with those of the above nuclides -
shall also be analyzed and reported in the Radioactive Effluent Release Report.
c Weekly grab sample and analysis I
d Continuous charcoal sample analyzed weekly e Continuous particulate sample analyzed weekly f Composite particulate sample analyzed monthly g Composite particulate sample analyzed quarterly Page 21 of 114
[1]
TABLE 4 Waterborne Effluents - Summation Of All Releases Data Period: January 01, 2023 - December 31, 2023 There were zero (O) liquid radwaste releases from CPS in 2023.
,A'; ***Fis*sibfr& ActiViltion* P,rQ:du:dtsW
- 1.
Total Release Ci
- 2.
- 3.
Average diluted concentration during period Percent of ODCM Limit
- 1.
Total Release
- 2.
- 3.
Average diluted concentration during period Percent of ODCM Limit
µCi/ml Ci
µCi/ml 0.00E+00 0.00E+00 0.00E+00 0.00E+00 N/A N/A N/A 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00
- 1.
Total Release Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00
- 2.
- 3.
Average diluted concentration during period Percent of ODCM Limit
µCi/ml 0.00E+00 0.00E+00 0.00E+00 N/A Gross alpha radioactivity Ci Volume of Waste Released (prior to Dilution)
Volume of dilution water used during period Liters 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Liters 0.00E+00 0.00E+00 N/A A value corresponding to ten times the values found in 10CFR20 Appendix B, Table 2, Column 2 is used for all Effluent Concentration Limit (ECL) calculations. For dissolved and entrained noble gases, the concentration is limited to 2.00E-04 µCi/ml total activity.
Page 22 of 114
TABLE 5 Waterborne Effluents - Nuclides Released Clinton Power Station YEAR: 2023 There were zero (0) liquid radwaste releases from CPS in 2023.
I Continuous Mode Batch Mode dn&//;J; ',,,,,,:,::c1:_;;i;J;.f';ft'tl~t*;1 *,;~;,:;;,,;1*,1°(",'.; :,c;::'q'..'A,.*:,c*.,c,:;;;ii' J; "'S-"'q"i i,,p;;:,>;3;/:(" '* n'v'i~-:-
iAb!ItrJ~:::':J;;[1t1,t:,~:{. ::;;
- ,;}7:I~)}:J~:!;fti;~-\r ~~t\;l~I:0?[,~~;~';\'Ja:~0::~~
11/::~ 'trrr,.,
Total for Period Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00
, ** _;,: '*;;.*r.:,,?, *;, *.,..,,... ;;;.;.~ ** * "*i"',;,*tc.:., 1:,c,,* *: :.,*;,::,*;;'T,;.. ;,.:::,:c,~*,;c,,,,,c,;;;, ::,;'tfi*.,:.'*\i '.;'t *: */c."1 ;{'f,t 1'L;}S*:* *'
}\*"':,; *J',\{'..*j;~'
- B.*":F.1ss1on:and A'ct1vat1.on Aroducts,,.,.,.,,,,.,:,;***,,.,c::_,:\:"'*"'*".. :;:,*::,1,,,~-::,<t.,,...
,,.*_,,£,,,*.. :,.,.,.,,... *,,
- ,:.,.:*~
"-.,,;a 0,,*,A**=',~"***,~<*h',
- ,, *.,,J,,,<)*',',;
(
.,>,>'/,*c~*
- ,*,'?!,,
~-<,.,,, *'0--~**>.e<',',,>,,~
01/-k,-\*,,,
/
Mns4 Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Coss Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Fess Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Fesg Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Coss Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 CoGo Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 znGS Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Srsg Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Srgo Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Nbgs Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 zr9s Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Mogg Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 1131 Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Cs134 Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Cs131 Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Ba140 Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 La140 Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 ce141 Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Ce144 Ci 0.00E+00 0.00E+00 0.00E+O0 0.00E+00 Total for Period Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00
~~::1;t~iiS.o.1*veci:~'ricii!i:njfai,i,jfl\io.bltf,G.asi(..;,,;;l.. *:*?'\.*._,;.,;:',<i;,,;'If,,i;?\'~',~"~{;{r:*;,s,t1r,IF'*h,:,,. ~:~;** '* **..... '.,;!,~tr:1*;
Krssm Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Krs1 Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Kras Ci 0.00E+00 O.00E+00 0.00E+00 0.00E+00 Xe133 Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 XeBs Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 xe13s Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Total for Period Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Page 23 of 114
TABLE 6 Radioactive Liquid Waste LLD Values Principal Gamma Emitters b 1131 Dissolved and Entrained Gases (Gamma Emitters) c Gross Alpha srs9, Srgo Fess
- -S:5.00E-07
- -S:1.00E-06
- -S:1.00E-05
- -S:1.00E-05
- -S:1.00E-07
- -S:5.00E-08
- -S:1.00E-06 Table 6 Notations:
a The Lower Limit of Detection (LLD) as defined for purposes of these specifications, as an "a priori" determination of the smallest concentration of radioactive material in a sample that will yield a net count - above system background - that will be detected with a 95%
probability and with only a 5% probability of falsely concluding that a blank observation represents a "real" signal.
For a particular measurement system, which may include radiochemical separation:
Where:
LLD E
- V
- 2.22 x 1 06
- Y
- e-Mt LLD is the "a priori" lower limit of detection as defined above, as µCi per unit mass or volume, Sb is the standard deviation of the background counting rate or of the counting rate of a blank sample as appropriate, in counts per minute (cpm),
E is the counting efficiency, as counts per disintegration, Vis the sample size in units of mass or volume, 2.22E+06 is the number of disintegrations per minute (dpm) per microcurie, Page 24 of 114
Table 6 Notations (continued):
Y is the fractional radiochemical yield, when applicable,
'A is the radioactive decay constant for the particular radionuclide (sec-1) and L1t for plant effluents is the elapsed time between the midpoint of sample collection and the time of counting (sec).
Typical values of E, V, Y, and 'At should be used in the calculation.
The LLD is defined as an a priori (before the fact) limit representing the capability of a measurement system and not as an a posteriori (after the fact, MDA) limit for a particular measurement.
b The principal gamma emitters for which the LLD requirement applies include the following radionuclides: Mn 54, Fe 59, Co 58, Co 60, Zn 65, Mo99, Cs134, Cs137, and Ce141. Ce 144 shall also be measured, but with an LLD of 5.0E-06. This list does not mean that only these nuclides are detected and reported. Other gamma peaks that are measurable - together with those of the above nuclides - shall also be analyzed and reported in the Radioactive Effluent Release Report.
c Dissolved and entrained gases are: Xe 133, Xe 135, Xe 138, Kr85 m, Kr87 and Kr88.
Page 25 of 114
BATCH RELEASES There were zero (O) liquid radwaste releases from CPS in 2023.
A.
Batch Liquid Releases: 2023
- 1.
Number of batch releases:
0
- 2.
Total time period for batch releases:
N/A
- 3.
Maximum time period for batch release:
N/A
- 4.
Average time period for batch release:
N/A
- 5.
Minimum time period for batch release:
N/A
- 6.
Average stream flow during periods of release:
N/A
- 7.
Total waste volume:
N/A
- 8.
Total dilution volume:
N/A B.
Batch Gaseous Releases: 2023
- 1.
Number of batch releases:
0
- 2.
Total time period for batch releases:
N/A
- 3.
Maximum time period for batch release:
N/A
- 4.
Average time period for batch release N/A
- 5.
Minimum time period for batch release:
N/A Page 26 of 114
ABNORMAL RELEASES Information concerning abnormal rad_ioactive liquid and gaseous releases is presented below for the year 2023. There were no abnormal or unplanned liquid or gaseous releases from CPS in 2023.
Liquid Rel.eases:
Number of Abnormal Liquid Releases: Zero (0)
Activity Released [Ci]: Ze_ro (0)
Gaseous Releases:
Number of Abnormal Gaseous Releases: Zero (0)
_ Activity Released [Ci]: Zero (O)
ILRT was performed during C1R21 under Work Order 01871977 (PMID 00159446). The evolution involved depressurization of containment and the drywell through two pathways, one was through the steam tunnel which ultimately goes to the HVAC stack (ODCM monitored pathway) and the second was through a pipe exiting the Service Building.
A penetration in the steam tunnel ~as used for first time during the C1R21 ILRT evolution, and was designed to improve depressurization time. This was not relied on as a sole vent pathway due to the potential for inadvertently tripping Fuel Building Ventilation (VF) which would result in an unmonitored release. Venting from this pathway was monitored closely until it was determined that the risk for tripping VF was no longer present. The second vent pathway was performed utilizing a pipe exiting the Service Building, and was based on the original design of the pressurization/depressurization line:
ODCM required air sampling of the de pressurized air through the first pathway was completed in accordance with ODCM HVAC surveillance requirements. ODCM required air sampling of the second pathway was completed at a location prior to environmental release.
These samples included grab samples for noble gases and tritium, as well as continuous sampling for particulates and iodines. Additionally, the depressurized air was sampled continuously by Radiation Protection for particulates and iodines at the outlet of the pipe exiting the Service Building. No radioactivity was detected during the testing, and all results were submitted to Records for vaulting under Work Order package 01871977.
Page 27 of 114
SECTION 5 SOLID WASTE DISPOSAL INFORMATION During this reporting period -January 01, 2023 through December 31, 2023 there were twenty-one (21) radioactive waste shipments and zero (0) irradiated fuel shipments from CPS. In addition, the CPS ODCM requires reporting of the following information for solid waste shipped offsite during the above reporting period:
- 1. Container volume:
Class A Waste: 5.21E+02 m3 / Class B Waste: 0.00E+00 m3 / Class C Waste: 0.00E+00 m3 This total includes Dry Active Waste (DAW), resins, filter sludges, evaporator bottoms, and other low level waste such as other waste-mixed.
- 2. Total curie quantity: Class A Waste was 4.14E+0l curies and Class B Waste was 0.00E+00 curies and Class C Waste was 0.00E+00 curies in 2023 (determined by dose-to-curie and sample concentration methodology estimates).
- 3. Principal radionuclides: See Table 7-A.2 for listing of measured radionuclides.
- 4. Source of waste and processing employed: Non-compacted dry active waste, resins, filter sludges and evaporator bottoms dewatered.
- 5. Type of container: General Design and Type A Containers.
- 6. Solidification agent or absorbent: None.
Page 28 of 114
TABLE 7 Solid Waste and Irradiated Fuel Shipments A.1 Estimate of Solid Waste Shipped Offsite for Burial or Disposal: [NOT irradiated fuel]
!~ >./_\ __ /(_~,~-- '-~r{~: ~?:-~~:1}:~*-- J<:\i.I/:_ /' *
,*.l~radii:lte~,i;;pmponeh
- ntrofi:ods>etc>. o~
- 2.SOE+0l 2.S0E+0l 2.S0E+0l 2.S0E+Ol
- Total curie quantity and principal radionuclides were determined by measurements.
A.2 Estimate of Major Nuclide Composition (by type of waste):
- 1. Spent resins, filters, evaporator bottoms, etc.
NuI;l{(!e'.Njltt(~iyr;,*
~::. :% ~~JtehtAb.Qndari;;cJf. : ;;. \'},~:°~~lk!l~J~ii~:;',;)
C-14 4.26%
- 1. 74E+00 Mn-54 33.85%
l.38E+0l Fe-55 24.29%
9.92E+00 Co-58 1.39%
5.69E-01 Co-60 29.66%
1.21E+0l Ni-63 1.43%
5.84E-01 Zn-65 3.65%
1.49E+00
- 2.
Dry compactable waste, contaminated equipment, etc.
- ,:'l:\Wa~tEi:eJa)l/t/. <
r,iuciii:I~; Narii;~_
1il~, i'. %':~iil~*nt A~uJicf~fnce*l!:*: dl/i'\
1:S{f.ur.ief-'.i?f;1,,\:\
A Mn-54 28.7%
1.93E-01 Fe-55 48.21%
3.24E-01 Fe-59 1.6%
1.07E-02 Co-60 18.53%
1.25E-01 Zn-65 1.34%
9.00E-03 Page 29 of 114
TABLE 7 (continued)
Solid Waste and Irradiated Fuel Shipments
- 3. Irradiated Components
,J;;\~air(~rif r~6!!lti:tij pc~t,,~:
N/A
- 4. Other Wastes - Mixed A.3 Solid Waste Disposition:
January - December 2023 0
1:ujp:g'.r;~~}igp!\J 10 Hittman Transport 10 Hittman Transport 1
Hittman Transport B. Irradiated Fuel Shipments Disposition:
Energy Solutions - Bear Creek 1560 Bear Creek Road EnergySolutions LLC.
Clive Dis osal Site - Treatment Facilit EnergySolutions LLC.
Clive Dis osal Site - Bulk Waste Facilit January - December 2023 N/A N/A Page 30 of 114
SECTION 6 DOSE MEASUREMENTS AND ASSESSMENTS This section of the Annual Effluent Release Report provides the dose received by receptors around CPS from gaseous and liquid effluents. The dose to the receptor that would have received the highest dose in each sector (defined as the Critical Receptor for that sector) is listed within this report. This section also provides the dose to individuals who were inside the Site Boundary.
This section also summarizes CPS's compliance with the requirements found within 40CFR190.
The 2023 maximum expected annual dose from Carbon-14 released from CPS has been calculated using the methodology included in the EPRI Technical Report 1021106 using the maximum gross thermal capacity maintained for 308.4 days of equivalent full power operation.
The assumptions used in determining dose values are as follows:
All receptors within a five (5) mile radius are included in the Annual Land Use Census. This Annual Census determines what dose pathways are present as well as the distance of each receptor from the site.
The annual average meteorological data for 2023 was used in conjunction with the Annual Land Use Census to determine the dose to each receptor within five (5) miles.
The doses for each receptor from each sector were determined using methodologies given in the ODCM.
The activity used in these assessments is the total activity released by CPS for the year 2023 not including radionuclides with half-lives less than eight (8) days and when dose pathway factors were unavailable.
The occupancy factor was taken into consideration by calculating the dose to individuals using areas inside the Site Boundary in non-residential areas. The occupancy factor is determined by dividing the number of hour(s) of occupancy per year (taken from the ODCM) and dividing that value by the total number of hour(s) per year.
Dose to individuals using areas inside the Site Boundary (that are not residents) was calculated using the Ground Plane and Inhalation pathways.
Page 31 of 114
TABLE 8 Maximum Offsite Doses and Dose Commitments To Members of the Public in Each Sector Data Period: January 01, 2023 - December 31, 2023 This table illustrates the dose that a member from the public would most likely be exposed to from radioactive effluents in each sector from CPS. These values represent the maximum dose likely to expose a member of the public in each sector.
- iilli~,}*f iF,~U~:~,f{it1:,,SE.s
~~!,i;f.~;~((~:,,1.
AT~'!!Sf?:~~Ei' k !!1 Se.ctor r N 1.50
)JNE.
1.50 GP, I B
A 1.31E-03 5.0SE-05 4.75E-04 1.70E-03 8.66E-04 11*"
- i.NE 2.07 GP, I B
A 4.59E-04 1.36E-05 1.64E-04 5.97E-04 3.0SE-04
'iNE 4.20 GP, I B
A 3.23E-04 5.52E-06 1.13E-04 4.24E-04 2.17E-04 1.67
- , 'E GP,I, M,V B
A 3.95E-02 3.0SE-05 8.20E-03 8.07E-04 4.12E-04
'ESE 5.14 GP, I B
A 5.25E-05 9.SSE-06 1.59E-04 5.92E-04 3.02E-04
.\;s~.i.
4.44 GP, I B
C 9.54E-04 1.04E-05 2.SlE-04 6.38E-04 3.26E-04
- ~SE 2.90 GP, I B
A 3.SSE-04 9.56E-06 1.27E-03 4.67E-04 2.38E-04
-.s 4.78 GP, I B
A 3.02E-04 5.54E-06 1.06E-04 3.96E-04 2.02E-04 SSW 4.68 GP, I B
A 2.47E-04 4.llE-06 8.60E-05 3.24E-04 1.66E-04
A 7.83E-04 3.0SE-05 2.83E-04 1.0lE-03 5.16E-04 Wsw:
3.62 GP, I B
A 3.74E-04 7.26E-06 1.31E-04 4.90E-04 2.SlE-04
,W 1.95 GP, I B
T 4.45E-04 9.70E-06 1.37E-04 4.07E-04 2.0SE-04 WNW 2.63 GP, I, V
- B A
1.49E-02 5.37E-06 3.12E-03 4.lSE-04 2.12E-04
- ',NIAU 2.65 GP, I B
A 5.03E-04 9.66E-06 1.76E-04 6.60E-04 3.37E-04
}JNW' 2.05 GP, I, M B
A 1.12E-02 1.59E-05 2.37E-03 8.14E-04 4.16E-04 Ke~ for Table 8
, : *Pathways *, 7i
- ,
- .: l,'
Orga'if"
.:,l *:' Age*
/
GP= Ground Plane B = Bone A= Adult I= Inhalation T = Teen M = Meat I = Infant V = Vegetation C = Child
[llThere were zero (OJ liquid radwaste releases from CPS in 2023. All doses were within all regulatory limits, including limits from 40CFR190.
Page 32 of 114
COMPLIANCE WITH 40CFR190 REQUIREMENTS Dosimeter of Legal Records (DLRs) are stationed around CPS to measure the ambient gamma radiation field. Monitoring stations are placed near the site boundary, which includes the Independent Spent Fuel Storage Installation (ISFSI) pad, and approximately five (5) miles from the reactor, in locations representing the sixteen (16) compass sectors. Other locations are chosen to measure the radiation field at places of special interest such as nearby residences, meeting places and population centers. Control sites are located further than ten (10) miles from the site, in areas that should not be affected by plant operations. The results from the field dosimeters are reported in the Annual Radiological Environmental Operating Report (AREOR) and indicated no excess dose to offsite areas. The organ and whole body doses reported in the above tables are determined using 10CFR50 Appendix I methodology, which encompasses the limits of 40CFR190. The requirement requires the preparation and submittal of a Special Report whenever the calculated doses from plant generated radioactive effluents and direct radiation exceed 25 mRem to the total body or any organ, except the thyroid, which shall be limited to less than or equal to 75 mRem.
During 2023, Clinton Power Station operated at 1.96E-01% (4.91E-02 mrem) of the 40CFR190 total body limit, 9.66E-01% of the 40CFR190 organ limit (2.42E-01 mrem) and 1.06E-03%
40CFR190 thyroid limit (7.98E-04 mrem).
INDENDENDENT SPENT FUEL STORAGE INSTALLATION (ISFSI)
No radioactive effluents were released from the Clinton Station ISFSI and no additional casks were placed on the pad for the period January 1, 2023 through December 31, 2023. Over the long term, as more storage modules containing dry shielded canisters of spent fuel are placed on the ISFSI pad, it is expected that ISFSI operations will become the prominent contributor to dose limits in this section. ISFSI dose contribution is in the form of direct radiation as no liquid or gas releases are expected to occur from the ISFSI canisters. The CPS 10CFR72.212 Report prepared in accordance with 10CFR72 requirements assumes a certain array of storage modules exists on the pad. The dose contribution from this array of casks combination with historical uranium fuel cycle operations prior to ISFSI operations was analyzed to be within 40CFR190 and 10CFR72.104 limits and is documented in Holtec Report No. Hl-2135750, Site Boundary Dose Rate Calculations for HI-STORM FW System for Clinton Power Station. The REMP Dosimeters recorded no net direct radiation dose to any Member of the Public from ISFSI.
DOSE TO MEMBERS OF THE PUBLIC WITHIN THE SITE BOUNDARY CPS Offsite Dose Calculation Manual section 6.2 requires that the Radioactive Effluent Release Report include an assessment of the radiation doses from radioactive liquids and gaseous effluents to MEMBERS OF THE PUBLIC due to their activities inside the SITE BOUNDARY. Within the CPS site boundary there are seven areas that are open to members of the public as identified by CPS ODCM Table 5-3 (see Figure 4):
The Department of Natural Resources Recreation Area at 1.287 kilometers (0.8 miles) in the ESE sector A road at 0.495 kilometers (0.3 miles) in the SE sector A residence at 2.736 kilometers (1.7 miles) in the SSE sector A residence at 1.219 kilometers (0.8 miles) in the SW sector Agricultural acreage at 1.372 kilometers (0.9 miles) in the SSW sector Page 33 of 114
A residence at 2.414 kilometers (1.5 miles) in the WSW sector A portion of Clinton Lake at 0.335 kilometers (0.2 miles) in the NW sector At all of the above locations, the plume, inhalation and ground-plane exposure pathways are used for dose calculations. The 2023 Annual Land Use Census identified no other exposure pathways. All dose calculations were performed using the methodology contained in the CPS ODCM, with the exception of dose due to C-14, which was calculated using methodology included in the EPRI Technical Report 1021106.
Page 34 of 114
FIGURE 4 AREAS WITHIN THE CPS SITE BOUNDARY OPEN TO MEMBERS OF THE PUBLIC MAROA WELDON TO CffAMF>AIGN WAP-El.:t.A NOTES:
- 1.
- 2.
- 3.
- 4.
- 5.
- 6.
- 7.
Road 0.3 miles in SE Sector Agricultural 0.9 miles in SSW Sector Clinton Lake 0.2 in the NW Sector Department of Natural Resources Recreation Area 0.8 miles in ESE Sector Residence 0.8 miles in SW Sector Residence 1.5 miles in WSW Sector Residence 1.7 miles in SSE Sector Page 35 of 114
TABLE 9 Calculated Doses to Members of the Public During Use of the Department of Natural Resources Recreation Area in the East-Southeast Sector within the CPS Site Boundary Data Period: January 01, 2023 - December 31, 2023 DESCRIPTION DOSE UNITS Total Body Dose Rate (Noble Gases) 3.76E-04 mRem/year Skin Dose Rate Noble m
Gamma Air Dose 3.93E-04 mRad Beta Air Dose 2.0lE-04 mRad Total Body Dose[1l 1.63E-04 mRem Skin Doser11 1.67E-05 mRem rii Dose includes the dose values resulting from the release of iodines, particulates (with half lives >8 days), tritium, and C-14 in gaseous effluents.
Highest Organ Dose by Age Group:
Adult Bone Teen Bone Child Bone Infant Bone 3.08E-04 4.35E-04 5.96E-04 4.43E-04 mRem mRem mRem mRem Page 36 of 114
TABLE 10 Calculated Doses to Members of the Public During Use of the Road in the Southeast Sector within the CPS Site Boundary Data Period: January 01, 2023 -December 31, 2023 DESCRIPTION DOSE UNITS Total Body Dose Rate (Noble Gases) 1.lOE-04 mRem/year Skin Dose Rate Gamma Air Dose 1.25E-04 mRad Beta Air Dose 6.39E-05 mRad Total Body Dosel1l 5.19E-05 mRem Skin Dosel1l 5.25E-06 mRem l1l Dose includes the dose values resulting from the release of iodines, particulates (with half lives >8 days), tritium, and C-14 in gaseous effluents.
Highest Organ Dose by Age Group:
Adult Bone Teen Bone Child Bone Infant Bone 9.81E-05 1.39E-04 1.90E-04 1.41E-04 mRem mRem mRem mRem Page 37 of 114
TABLE 11 Calculated Doses for the Residents in the South-Southeast Sector within the CPS Site Boundary Data Period: January 01, 2023 - December 31, 2023 DESCRIPTION DOSE UNITS Total Body Dose Rate (Noble Gases}
4.56E-04 mRem/year Skin Dose Rate Gamma Air Dose 4.80E-04 mRad Beta Air Dose 2.45E-04 mRad Total Body Dose[1l 1.91E-04 mRem Skin Doser11 1.04E-05 mRem
[ll Dose includes the dose values resulting from the release of iodines, particulates (with half lives >8 days), tritium, and C-14 in gaseous effluents.
Highest Organ Dose by Age Group:
Adult Bone Teen Bone Child Bone Infant Bone 3.69E-04 5.24E-04 7.20E-04 5.33E-04 mRem mRem mRem mRem Page 38 of 114
TABLE 12 Calculated Doses for the Residents in the Southwest Sector within the CPS Site Boundary Data Period: January 01, 2023 - December 31, 2023 DESCRIPTION DOSE UNITS Total Body Dose Rate (Noble Gases) 9.23E-04 mRem/year Skin Dose Rate (Noble Gases) 1.35E-03 mRem/year r-:-;:-~;,, i/,>',;-
3**v,~_;-.z.~,
- ,.,. s-t,4&**" *
,>>*,;,:,,,,,::.:.""-~-~-"-\.""--'~~"-~=*;.~~':~"47:'\,
0 '**1 ?'.""i Gamma Air Dose Beta Air Dose Total Body Dosel1l Skin Dose 111 9.71E-04 mRad 4.96E-04 mRad 3.94E-04 mRem 2.93E-05 mRem 111 Dose includes the dose values resulting from the release of iodines, particulates (with half lives >8 days), tritium, and C-14 in gaseous effluents.
Highest Organ Dose by Age Group:
Adult Bone Teen Bone Child Bone Infant Bone 7.52E-04 1.07E-03 1.46E-03 1.08E-03 mRem mRem mRem mRem Page 39 of 114
TABLE 13 Calculated Doses to Members of the Public During Use of the Agricultural Acreage in the South-Southwest Sector within the CPS Site Boundary Data Period: January 01, 2023 - December 31, 2023 DESCRIPTION DOSE UNITS Total Body Dose Rate (Noble Gases) 5.89E-05 mRem/year Skin Dose Rate Noble 8.61E-05 m
Gamma Air Dose 6.18E-05 mRad Beta Air Dose 3.16E-05 mRad Total Body Dosel1l 2.14E-05 mRem Skin Dosel11 2.19E-06 mRem
[ll Dose includes the dose values resulting from the release of iodines, particulates (with half lives >8 days), tritium, and C-14 in gaseous effluents.
Highest Organ Dose by Age Group:
Adult Bone Teen Bone Child Bone Infant Bone 4.82E-05 6.82E-05 NA[Z]
NA[Z]
mRem mRem mRem mRem
[zJ Dose(s) are calculated only for the age groups likely to be in the field Page 40 of 114
TABLE 14 Calculated Doses for the Residents in the West-Southwest Sector within the CPS Site Boundary Data Period: January 01, 2023 - December 31, 2023 DESCRIPTION Total Body Dose Rate (Noble Gases)
Skin Dose Rate Beta Air Dose Total Body Dose[1J Skin Dose[1J DOSE UNITS 5.41E-04 mRem/year 2.91E-04 mRad 2.26E-04 mRem 1.21E-05 mRem (iJ Dose includes the dose values resulting from the release of iodines, particulates (with half lives >8 days), tritium, and C-14 in gaseous effluents.
Highest Organ Dose by Age Group:
Adult Bone Teen Bone Child Bone Infant Bone 4.37E-04 6.21E-04 8.53E-04 6.32E-04 mRem mRem mRem mRem Page 41 of 114
TABLE 15 Calculated Doses to Members of the Public During Use of Clinton Lake in the Northwest Sector within the CPS Site Boundary Data Period: January 01, 2023 - December 31, 2023 DESCRIPTION DOSE UNITS Total Body Dose Rate (Noble Gases) 7.77E-04 mRem/year Skin Dose Rate 1.14E-03 Gamma Air Dose 8.l0E-04 mRad Beta Air Dose 4.lSE-04 mRad Total Body DoseC1J 3.25E-04 mRem Skin Dose111 2.03E-05 mRem
[ll Dose includes the dose values resulting from the release of iodines, particulates (with half lives >8 days), tritium, and C-14 in gaseous effluents.
Highest Organ Dose by Age Group:
Adult Bone Teen Bone Child Bone Infant Bone 6.25E-04 8.87E-04 l.22E-03 9.03E-04 mRem mRem mRem mRem Page 42 of 114
SECTION 7 METEOROLOGICAL DATA AND DISPERSION ESTIMATES On 13 April 1972, the meteorological monitoring program commenced at the Clinton Power Station site. The meteorological system consists of a tower 199 feet high with two (2) levels of instrumentation at the 10-meter and.60-meter elevations. A combined cup and vane sensor measures wind direction and wind speed(s) at the 10-meter and 60-meter levels. An aspirated dual temperature sensor senses the temperatures at these levels. One-half of the dual sensors at each elevation are used for ambient temperature while the other half are used to provide a differential temperature between the 10-meter and 60-meter levels.
Meteorological monitoring instruments have been placed on the Clinton Power Station backup meteorological tower at the 10-meter level to serve as a backup to the primary meteorological tower.
Clinton Power Station meteorological data is transmitted to the Main Control Room (MCR) via a dedicated communication link. Once the signals are received at the MCR, they are then converted to a 4 to 20 milliamp signal and fed individually to a microprocessor and chart recorders. The microprocessor is part of the Clinton Power Station Radiation Monitoring System (RMS). Meteorological data is available via the microprocessors in the Main Control Room and the Technical Support Center (TSC}.
Dispersion modeling for effluents for normal operation of Clinton Power Station is a straight-line, sector-averaged Gaussian plume model designed to estimate average relative concentration at various receptor points. The model was developed in accordance with routine release analysis procedures specified in Regulatory Guide 1.111. For joint frequency input data, periods of calm are distributed in accordance with a directional distribution. For hourly input data, periods of calm are the previous hour's wind direction. Periods of calm are assigned a wind speed value of half the specified instrument threshold value. Reference Table 18 for more detailed information on meteorology and dispersion data.
Page 43 of 114
TABLE 16 Meteorological Data Availability Data Period: January 01, 2023 - December 31, 2023 99.9 100.0 99.9 100.0 99.9 100.0
- ~:
1.:P~rtfnt of*;~bur$;jf,9-r Vfhifh vali~i.69°~eter\
Wi'h,d, SReed1,Win'd. [)ifection; 1andmeltc(.
)f~rn,~er:a~ur~ *w'ere *~tailabi"~
.*:,/'
94.3 99.6 100.0 100.0 100.0 100.0 99.8 100.0 99.8 100.0 99.8 100.0 99.8 100.0 Clinton Power Station was able to achieve 99.7% Meteorological Recoverable Data during 2023 exceeding the minimum criteria of 90% as delineated within Regulatory Guide 1.23.
Page 44 of 114
TABLE 17 Classification of Atmospheric Stability rr~1;~101v::e:,ii~rriiA1tmJ:~r ftltl!J~~i111U,;;tJTh1ft1;y~,~ r~Pitlii(olt~rui~ijJI,Pn:s~~)
Extremely unstable A
<LH ~ -1.9 Moderately unstable B
-1.9 <LlT~ -1.7 Slightly unstable C
-1.7 <LlT~ -1.5 Neutral D
-1.5 <LlT~ -0.5 Slightly stable E
-0.5 <LlT~ 1.5 Moderately stable F
Extremely stable G
4.0 <Ll T ~ ------
LlT = temperature difference in degrees Celsius per 100 meters Page 45 of 114
TABLE 18 Joint Wind Frequency Distribution by Stability Class Reporting Period: January 01, 2023 December 31, 2023 The following table contains the joint wind frequency tables for CPS. The tables are segregated by sensor evelation and calendar quarter. All tabled values are in hours.
Clinton Power Station Period of Record:
March 2023 Stability Class - Extremely Unstable 60m-10m Delta-T (F)
Winds Measured at 10 Meters Wind Speed (in mph)
Wind Direction 1-3 4-7 8-12 13-18 19-24
> 24 Total N
0 2
4 0
0 0
6 NNE 0
0 4
0 0
0 4
NE 0
0 1
0 0
0 1
ENE 0
0 2
2 0
0 4
E 0
0 0
0 0
0 0
ESE 0
0 0
0 0
0 0
SE 0
0 2
0 0
0 2
SSE 0
0 2
0 0
0 2
s 0
0 2
0 0
0 2
SSW 0
0 1
1 0
0 2
SW 0
0 0
1 0
0 1
WSW 0
0 0
0 0
0 0
w 0
0 3
2 0
0 5
WNW 0
0 0
4 3
0 7
NW 0
0 7
0 0
0 7
NNW 0
3 5
0 0
0 8
Variable 0
0 0
0 0
0 0
Total 0
5 33 10 3
0 51 Hours of calm in this stability class:
0 Hours of missing wind measurements in this 0
Hours of missing stability measurements in classes:
3 Page 46 of 114
Clinton Power Station Period of Record: January -
March 2023 Stability Class - Moderately Unstable 60m-10m Delta-T (F,)
Winds Measured at 10 Meters Wind Speed (in mph)
Wind Direction 1-3 4-7 8-12 13-18 19-24
> 24 Total N
0 0
3 0
0 0
3 NNE 0
0 1
0 0
0 1
NE 0
2 4
0 0
0 6
ENE 0
1 2
1 0
0 4
E 0
2 0
0 0
0 2
ESE 0
1 3
0 0
0 4
SE 0
2 6
0 0
0 8
SSE 0
1 0
0 0
0 1
s 0
6 0
4 0
0 10 SSW 0
0 4
8 0
0 12 SW 0
0 2
4 0
0 6
WSW 0
2 6
0 0
0 8
w 0
1 5
6 0
0 12 WNW 0
2 5
7 1
0 15 NW 0
3 8
1 0
0 12 NNW 0
1 2
0 0
0 3
Variable 0
0 0
0 0
0 0
Total 0
24 51 31 1
0 107 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 Page 47 of 114
Clinton Power Station Period of Record: January -
March 2023 Stability Class - Slightly Unstable 60m-10m Delta-T (F)
Winds Measured at 10 Meters Wind Speed (in mph)
Wind Direction 1-3 4-7 8-12 13-18 19-24
> 24 Total N
0 3
7 0
0 0
10 NNE 0
0 2
0 0
0 2
NE 0
0 1
0 0
0 1
ENE 0
1 3
0 0
0 4
E 0
0 2
0 0
0 2
ESE 0
3 5
0 0
0 8
SE 0
1 6
0 0
0 7
SSE 0
1 0
3 0
0 4
s 0
1 3
1 0
0 5
SSW 0
2 3
6 2
0 13 SW 0
1 2
6 0
0 9
WSW 0
1 4
1 0
0 6
w 0
1 3
4 0
0 8
WNW 0
2 10 7
1 0
20 NW 0
3 8
1 1
0 13 NNW 1
2 1
0 0
0 4
Variable 0
0 0
0 0
0 0
Total 1
22 60 29 4
0 116 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 Page 48 of 114
Clinton Power Station Period of Record: January - March 2023 Stability Class - Neutral 60m-10m Delta-T (F)
Winds Measured at 10 Meters Wind Speed (in mph)
Wind Direction 1-3 4-7 8-12 13-18 19-24
> 24 Total N
0 31 56 15 0
0 102 NNE 2
11 16 6
0 1
36 NE 2
16 39 3
1 3
64 ENE 4
20 62 2
0 0
88 E
3 14 37 2
0 0
56 ESE 2
19 20 0
0 0
41 SE 2
14 14 0
0 0
30 SSE 0
16 48 10 1
0 75 s
1 21 37 20 4
0 83 SSW 0
13 17 33 9
0 72 SW 0
7 17 8
6 0
38 WSW 2
5 28 9
4 0
48 w
2 17 28 45 9
0 101 WNW 0
14 57 66 9
0 14 6 NW 2
14 42 48 7
0 113 NNW 2
31 49 9
0 0
91 Variable 0
0 0
0 0
0 0
Total 24 263 567 276 50 4
1184 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 Page 49 of 114
Clinton Power Station Period of Record: January -
March 2023 Stability Class - Slightly Stable 60m-10m Delta-T (F)
Winds Measured at 10 Meters Wind Speed (in mph)
Wind Direction 1-3 4-7 8-12 13-18 19-24
> 24 Total N
2 3
2 2
1 0
10 NNE 5
10 6
0 1
0 22 NE 3
13 1
0 0
0 17 ENE 0
16 7
0 0
0 23 E
3 13 8
0 0
0 24 ESE 3
14 4
0 0
0 21 SE 4
8 9
0 0
0 21 SSE 2
16 31 7
0 0
56 s
4 12 46 11 0
0 73 SSW 1
23 57 21 5
0 107 SW 6
23 13 4
2 0
48 WSW 5
17 23 3
0 0
48 w
5 8
9 3
0 0
25 WNW 2
19 16 2
0 0
39 NW 5
8 8
1 0
0 22 NNW 0
10 4
0 0
0 14 Variable 0
0 0
0 0
0 0
Total 50 213 244 54 9
0 570 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 Page 50 of 114
Clinton Power Station Period of Record: January - March 2023 Stability Class - Moderately Stable 60m-10m Delta-T (F)
Winds Measured at 10 Meters Wind Speed (in mph)
Wind Direction 1-3 4-7 8-12 13-18 19-24
> 24 Total N
2 2
0 0
0 0
4 NNE 2
1 0
0 0
0 3
NE 9
9 0
0 0
0 18 ENE 5
1 0
0 0
0 6
E 1
4 0
0 0
0 5
ESE 5
0 0
0 0
0 5
SE 2
5 0
0 0
0 7
SSE 2
3 0
0 0
0 5
s 6
2 0
0 0
0 8
SSW 2
2 1
0 0
0 5
SW 0
4 0
0 0
0 4
WSW 3
3 0
0 0
0 6
w 2
0 1
0 0
0 3
WNW 3
2 0
0 0
0 5
NW 0
8 0
0 0
0 8
NNW 3
3 0
0 0
0 6
Variable 0
0 0
0 0
0 0
Total 47 49 2
0 0
0 98 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 Page 51 of 114
Clinton Power Station Period of Record: January -
March 2023 Stability Class - Extremely Stable 60rn-1 Orn Delta-T (F)
Winds Measured at 10 Meters 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 1
0 0
0 0
0 1
NE 0
1 0
0 0
0 1
ENE 2
0 0
0 0
0 2
E 0
0 0
0 0
0 0
ESE 0
0 0
0 0
0 0
SE 1
2 0
0 0
0 3
SSE 4
5 0
0 0
0 9
s 6
0 0
0 0
0 6
SSW 0
1 0
0 0
0 1
SW 2
0 0
0 0
0 2
WSW 2
0 0
0 0
0 2
w 2
0 0
0 0
0 2
WNW 2
0 0
0 0
0 2
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 22 9
0 0
0 0
31 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 Page 52 of 114
Clinton Power Station Period of Record: January - March 2023 Stability Class -
Extremely Unstable 60m-10m Delta-T (F)
Winds Measured at 60 Meters Wind Speed (in mph)
Wind Direction 1-3 4-7 8-12 13-18 19-24
> 24 Total N
0 0
2 1
0 0
3 NNE 0
0 1
0 0
0 1
NE 0
0 1
0 0
0 1
ENE 0
0 0
2 2
0 4
E 0,
0 0
0 0
0 0
ESE 0
0 0
0 0
0 0
SE 1
1 0
0 0
0 2
SSE 0
0 0
0 0
0 0
s 0
0 0
5 0
0 5
SSW 0
0 0
0 1
0 1
SW 0
0 0
0 1
0 1
WSW 0
0 0
0 0
0 0
w 0
0 2
1 2
0 5
WNW 0
0 2
2 2
3 9
NW 0
0 4
2 0
0 6
NNW 0
0 4
5 0
0 9
Variable 0
0 0
0 0
0 0
Total 1
1 16 18 8
3 47 Hours of calm in this stability class:
0 Hours of missing wind measurements in this stability class:
4 Hours of missing stability measurements in all stability classes:
3 Page 53 of 114
Clinton Power Station Period of Record: January -
March 2023 Stability Class - Moderately Unstable 60m-10m Delta-T (F)
Winds Measured at 60 Meters Wind (in mph)
Wind Direction 1-3 4-7 8-12 13-18 19-24
> 24 Total N
0 0
3 0
0 0
3 NNE 0
0 0
1 0
0 1
NE 0
0 4
2 0
0 6
ENE 0
0 2
0 2
0 4
E 0
0 2
0 0
0 2
ESE 0
0 1
1 0
0 2
SE 1
1 4
0 0
0 6
SSE 0
0 0
1 0
0 1
s 0
4 3
3 1
0 11 SSW 0
0 3
1 7
1 12 SW 0
0 2
0 3
0 5
WSW 0
1 4
6 0
0 11 w
0 1
3 4
3 0
11 WNW 0
0 5
3 5
2 15 NW 0
2 2
5 0
0 9
NNW 0
1 1
0 0
0 2
Variable 0
0 0
0 0
0 0
Total 1
10 39 27 21 3
101 Hours of calm in this class:
0 Hours of missing wind measurements in this stability class:
6 Hours of stability measurements in all stability classes:
3 Page 54 of 114
Clinton Power Station Period of Record: January -
March 2023 Stability Class - Slightly Unstable 60m-10m Delta-T (F)
Winds Measured at 60 Meters Wind Speed (in mph)
Wind Direction 1-3 4-7 8-12 13-18 19-24
> 24 Total N
0 3
0 8
0 0
11 NNE 0
0 0
0 0
0 0
NE 0
0 0
1 0
0 1
ENE 0
0 2
1 1
0 4
E 0
0 0
2 0
0 2
ESE 0
1 3
0 0
0 4
SE 0
1 1
2 0
0 4
SSE 0
1 0
0 2
1 4
s 0
2 1
1 1
1 6
SSW 0
0 5
4 3
1 13 SW 0
0 0
1 6
0 7
WSW 0
2 2
5 0
0 9
w 0
0 1
3 5
0 9
WNW 1
1 10 5
4 2
23 NW
- O 1
2 4
1 0
8 NNW 0
1 2
0 0
0 3
Variable 0
0 0
0 0
0 0
Total 1
13 29 37 23 5
108 Hours of calm in this stability class:
0 Hours of missing wind measurements in this stability class:
8 Hours of missing stability measurements in all stability classes:
3 Page 55 of 114
Clinton Power Station Period of Record: January -
March 2023 Stability Class - Neutral 60m-10m Delta-T (F)
Winds Measured at 60 Meters Wind Speed (in mph)
Wind Direction 1-3 4-7 8-12 13-18 19-24
> 24 Total N
0 10 30 36 12 1
89 NNE 1
4 3
12 5
1 26 NE 0
2 9
26 9
5 51 ENE 1
3 15 32 24 1
76 E
1 5
6 22 12 0
46 ESE 0
5 8
13 1
0 27 SE 1
10 9
10 1
0 31 SSE 0
4 14 33 25 4
80 s
1 8
14 21 29 10 83 SSW 0
6 11 9
26 13 65 SW 0
4 10 12 6
8 40 WSW 1
0 6
21 6
9 43 w
1 9
27 27 30 14 108 WNW 2
4 17 45 48 28 144 NW 0
4 21 41 29 3
98 NNW 0
6 26 38 15 1
86 Variable 0
0 0
0 0
0 0
Total 9
84 226 398 278 98 1093 Hours of calm in this stability class:
0 Hours of missing wind measurements in this stability class:
91 Hours of missing stability measurements in all stability classes:
3 Page 56 of 114
Clinton Power Station Period of Record: January - March 2023 Stability Class - Slightly Stable 60m-10m Delta-T (F)
Winds Measured at 60 Meters Wind Speed (in mph)
Wind Direction 1-3 4-7 8-12 13-18 19-24
> 24 Total N
0 5
5 3
1 3
17 NNE 0
2 10 5
0 0
17 NE 0
1 1
9 1
0 12 ENE 0
1 10 5
0 0
16 E
0 0
12 17 1
0 30 ESE 0
2 5
7 3
0 17 SE 0
9 7
6 0
0 22 SSE 0
1 6
19 13 5
44 s
1 1
5 44 30 5
86 SSW 1
4 12 39 23 8
87 SW 0
3 9
25 9
3 49 WSW 0
3 12 25 6
2 48 w
3 4
12 12 7
2 40 WNW 1
4 8
16 7
0 36 NW 0
1 7
9 1
0 18 NNW 2
2 8
6 0
0 18 Variable 0
0 0
0 0
0 0
Total 8
43 129 247 102 28 557 Hours of calm in this stability class:
0 Hours of missing wind measurements in this stability class:
13 Hours of missing stability measurements in all stability classes:
3 Page 57 of 114
Clinton Power Station Period of Record: January -
March 2023 Stability Class - Moderately Stable 60m-10m Delta-T (F)
Winds Measured at 60 Meters Wind Speed (in mph)
Wind Direction 1-3 4-7 8-12 13-18 19-24
> 24 Total N
0 0
5 0
0 0
5 NNE 0
1 8
2 0
0 11 NE 0
1 7
1 0
0 9
ENE 0
0 5
1 0
0 6
E 0
0 1
2 0
0 3
ESE 0
1 0
0 0
0 1
SE 0
0 1
0 0
0 1
SSE 0
1 7
1 0
0 9
s 1
2 0
3 0
0 6
SSW 0
4 0
3 1
0 8
SW 0
2 1
1 0
0 4
WSW 0
4 3
1 0
0 8
w 2
1 3
3 0
0 9
WNW 0
1 6
0 0
0 7
NW 0
0 2
4 0
0 6
NNW 0
1 1
1 0
0 3
Variable 0
0 0
0 0
0 0
Total 3
19 50 23 1
0 96 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 Page 58 of 114
Clinton Power Station Period of Record: January -
March 2023 Stability Class Stable 60m-10m Delta-T (F)
Winds Measured at 60 Meters 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 0
0 0
0 0
0 0
ENE 0
0 1
0 0
0 1
E 0
0 1
0 0
0 1
ESE 0
0 0
0 0
0 0
SE 1
0 0
0 0
0 1
SSE 0
0 1
2 0
0 3
s 0
1 2
1 0
0 4
SSW 0
2 3
0 0
0 5
SW 0
6 2
0 0
0 8
WSW 0
0 0
0 0
0 0
w 0
3 2
0 0
0 5
WNW 0
0 3
0 0
0 3
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 1
12 15 3
0 0
31 Hours of calm in this stability class:
0 Hours of missing wind measurements in this stability class:
0 Hours of missing s measurements in all stability classes:
3 Clinton Power Station Page 59 of 114
Period of Record: April June 2023 Stability Class - Extremely Unstable 60m-10m Delta-T (F)
Winds Measured at 10 Meters Wind Speed (in mph)
Wind Direction 1-3 4-7 8-12 13-18 19-24
> 24 Total N
0 5
9 0
0 0
14 NNE 0
3 2
0 0
0 5
NE 0
2 12 0
0 0
14 ENE 0
1 19 0
0 0
20 E
0 4
9 0
0 0
13 ESE 0
1 0
0 0
0 1
SE 0
1 7
0 0
0 8
SSE 0
0 2
0 0
0 2
s 0
0 1
3 0
0 4
SSW 0
0 0
0 0
0 0
SW 0
2 0
0 0
0 2
WSW 0
0 3
3 1
0 7
w 0
0 1
2 1
0 4
WNW 0
0 1
9 4
0 14 NW 0
1 9
2 0
0 12 NNW 0
3 7
0 0
0 10 Variable 0
0 0
0 0
0 0
Total 0
23 82 19 6
0 130 Hours of calm in this class:
0 Hours of missing wind measurements in this stability class:
0 Hours of missing measurements in all stability classes:
0 Page 60 of 114
Clinton Power Station Period of Record: April - June 2023 Stability Class - Moderately Unstable 60m-10m Delta-T (F)
Winds Measured at 10 Meters 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
6 2
0 0
0 8
NE 0
5 3
0 0
0 8
ENE 0
5 9
0 0
0 14 E
0 6
5 0
0 0
11 ESE 0
3 1
0 0
0 4
SE 0
3 4
0 0
0 7
SSE 0
3 3
0 0
0 6
s 0
10 2
2 0
0 14 SSW 0
6 3
0 0
0 9
SW 0
2 1
0 0
0 3
WSW 0
2 5
1 0
0 8
w 0
2 1
0 0
0 3
WNW 0
2 4
5 1
0 12 NW 0
2 3
2 3
0 10 NNW 0
3 0
0 0
0 3
Variable 0
0 0
0 0
0 0
Total 0
61 47 10 4
0 122 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 Page 61 of 114
Clinton Power Station Period of Record: April -
June 2023 Stability Class - Slightly Unstable 60m-10m Delta-T (F)
Winds Measured at 10 Meters 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 1
4 0
3 0
0 8
NE 0
4 5
0 0
0 9
ENE 0
6 5
0 0
0 11 E
0 2
0 0
0 0
2 ESE 0
2 2
0 0
0 4
SE 0
9 2
0 0
0 11 SSE 0
7 1
0 0
0 8
s 0
16 7
2 0
0 25 SSW 0
8 1
0 0
0 9
SW 1
3 2
2 0
0 8
WSW 0
1 3
0 0
0 4
w 1
0 1
0 0
0 2
WNW 0
5 5
9 4
0 23 NW 2
5 6
4 0
0 17 NNW 0
6 0
0 0
0 6
Variable 0
0 0
0 0
0 0
Total 5
79 41 20 4
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:
0 Page 62 of 114
Clinton Power Station Period of Record: April -
June 2023 Stability Class - Neutral 60m-10m Delta-T (F)
Winds Measured at 10 Meters Wind Speed (in mph)
Wind Direction 1-3 4-7 8-12 13-18 19-24
> 24 Total N
2 9
7 0
0 0
18 NNE 0
12 12 5
0 0
29 NE 3
21 24 3
0 0
51 ENE 3
30 28 1
0 0
62 E
4 23 5
0 0
0 32 ESE 5
15 1
0 0
0 21 SE 6
41 3
1 0
0 51 SSE 12 40 18 4
0 0
74 s
5 33 27 7
1 0
73 SSW 9
7 8
2 3
0 29 SW 3
5 7
4 1
0 20 WSW 2
8 3
3 0
0 16 w
1 4
11 13 10 3
42 WNW 3
12 35 39 15 1
105 NW 2
19 15 13 2
0 51 NNW 1
10 6
1 0
0 18 Variable 0
0 0
0 0
0 0
Total 61 289 210 96 32 4
692 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 Page 63 of 114
Clinton Power Station Period of Record: April -
June 2023 Stability Class - Slightly Stable 60m-10m Delta-T (F)
Winds Measured at 10 Meters Wind Speed (in mph)
Wind Direction 1-3 4-7 8-12 13-18 19-24
> 24 Total N
3 9
8 1
0 0
21 NNE 2
18 5
0 0
0 25 NE 4
37 25 1
0 0
67 ENE 6
38 12 0
0 0
56 E
8 28 4
1 0
0 41 ESE 10 51 6
1 0
0 68 SE 15 41 4
0 0
0 60 SSE 14 42 11 0
0 0
67 s
8 36 20 7
1 0
72 SSW 1
26 26 6
15 1
75 SW 7
2 10 2
0 0
21 WSW 5
6 11 1
0 0
23 w
3 5
6 0
0 0
14 WNW 4
20 18 1
0 0
43 NW 5
21 6
1 1
0 34 NNW 2
7 2
0 0
0 11 Variable 0
0 0
0 0
0 0
Total 97 387 174 22 17 1
698 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 Page 64 of 114
Clinton Power Station Period of Record: April -
June 2023 Stability Class - Moderately Stable 60m-10m Delta-T (F)
Winds Measured at 10 Meters Wind Speed (in mph)
Wind Direction 1-3 4-7 8-12 13-18 19-24
> 24 Total N
2 5
0 0
0 0
7 NNE 5
7 0
0 0
0 12 NE 9
48 1
0 0
0 58 ENE 13 11 0
0 0
0 24 E
9 8
0 0
0 0
17 ESE 7
5 0
0 0
0 12 SE 8
8 0
0 0
0 16 SSE 8
4 0
0 0
0 12 s
6 18 2
0 0
0 26 SSW 5
5 3
0 0
0 13 SW 3
1 2
0 0
0 6
WSW 3
4 0
0 0
0 7
w 0
3 0
0 0
0 3
WNW 4
1 1
0 0
0 6
NW 2
1 0
0 0
0 3
NNW 1
0 0
0 0
0 1
Variable 0
0 0
0 0
0 0
Total 85 129 9
0 0
0 223 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 Page 65 of 114
Clinton Power Station Period of Record: April June 2023 Stability Class Stable 60m-10m Delta-T (Fl Winds Measured at 10 Meters Wind Speed (in mph)
Wind Direction 1-3 4-7 8-12 13-18 19-24
> 24 Total N
11 0
0 0
0 0
11 NNE 14 4
0 0
0 0
18 NE 21 32 0
0 0
0 53 ENE 8
2 0
0 0
0 10 E
3 1
0 0
0 0
4 ESE 2
1 0
0 0
0 3
SE 2
0 0
0 0
0 2
SSE 2
0 0
0 0
0 2
s 2
1 0
0 0
0 3
SSW 5
0 0
0 0
0 5
SW 5
2 0
0 0
0 7
WSW 1
0 0
0 0
0 1
w 5
0 0
0 0
0 5
WNW 16 0
0 0
0 0
16 NW 18 1
0 0
0 0
19 NNW 9
1 0
0 0
0 10 Variable 0
0 0
0 0
0 0
Total 124 45 0
0 0
0 169 Hours of calm in this class:
1 Hours of missing wind measurements in this stability class:
0 Hours of missing measurements in all stability classes:
0 Page 66 of 114
Clinton Power Station Period of Record: April - June 2023 Stability Class - Extremely Unstable 6 Orn-1 Orn Delta-T (F)
Winds Measured at 60 Meters Wind Speed (in mph)
Wind Direction 1-3 4-7 8-12 13-18 19-24
> 24 Total N
0 0
11 4
0 0
15 NNE 0
0 7
1 0
0 8
NE 0
0 5
3 0
0 8
ENE 0
0 4
17 1
0 22 E
0 0
4 4
1 0
9 ESE 0
0 1
0 0
0 1
SE 0
0 1
0 0
0 1
SSE 0
0 6
1 1
0 8
s 0
0 2
0 0
0 2
SSW 0
0 0
1 2
0 3
SW 0
2 0
0 0
0 2
WSW 0
0 1
3 2
2 8
w 0
0 1
0 2
1 4
WNW 0
0 8
4 5
6 23 NW 0
0 2
4 1
0 7
NNW 0
0 6
3 0
0 9
Variable 0
0 0
0 0
0 0
Total 0
2 59 45 15 9
130 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 Page 67 of 114
Clinton Power Station Period of Record: April -
June 2023 Stability Class - Moderately Unstable 6 Orn-1 Orn Delta-T (F)
Winds Measured at 60 Meters Wind Speed (in mph)
Wind Direction 1-3 4-7 8-12 13-18 19-24
> 24 Total N
0 1
2 1
0 0
4 NNE 0
2 7
0 0
0 9
NE 0
0 4
2 0
0 6
ENE 0
0 2
5 1
0 8
E 0
1 3
3 0
0 7
ESE 0
0 1
0 0
0 1
SE 0
0 1
0 0
0 1
SSE 0
0 5
4 0
0 9
s 0
6 4
2 2
0 14 SSW 0
5 2
0 0
0 7
SW 0
1 5
0 0
0 6
WSW 0
2 1
5 0
0 8
w 0
3 3
1 0
0 7
WNW 0
1 3
3 5
5 17 NW 0
1 2
1 1
0 5
NNW 0
3 7
0 0
0 10 Variable 0
0 0
0 0
0 0
Total 0
26 52 27 9
5 119 Hours of calm in this stability class:
0 Hours of missing wind measurements in this stability class:
3 Hours of missing stability measurements in all stability classes:
0 Page 68 of 114
Clinton Power Station Period of Record: April - June 2023 Stability Class - Slightly Unstable 60m-10m Delta-T (F)
Winds Measured at 60 Meters Wind Speed (in mph)
Wind Direction 1-3 4-7 8-12 13-18 19-24
> 24 Total N
0 0
6 0
1 0
7 NNE 0
3 2
1 2
0 8
NE 0
1 0
2 0
0 3
ENE 0
0 1
4 0
0 5
E 0
1 1
1 0
0 3
ESE 0
1 2
0 0
0 3
SE 0
3 5
0 0
0 8
SSE 0
2 5
0 0
0 7
s 0
5 5
2 0
0 12 SSW 1
1 4
2 2
0 10 SW 1
4 6
1 0
0 12 WSW 0
9 1
3 0
0 13 w
1 2
0 6
2 0
11 WNW 1
3 5
4 7
6 26 NW 1
5 3
1 1
0 11 NNW 0
6 3
0 0
0 9
Variable 0
0 0
0 0
0 0
Total 5
46 49 27 15 6
148 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:
0 Page 69 of 114
Clinton Power Station Period of Record: April -
June 2023 Stability Class - Neutral 60m-10m Delta-T (F)
Winds Measured at 60 Meters Wind Speed (in mph)
Wind Direction 1-3 4-7 8-12 13-18 19-24
> 24 Total N
0 6
15 10 5
0 36 NNE 0
2 14 7
5 0
28 NE 1
4 12 16 8
1 42 ENE 1
2 18 20 5
0 46 E
2 4
14 4
0 0
24 ESE 2
6 3
2 0
0 13 SE 2
12 14 2
0 0
30 SSE 6
10 18 8
3 0
45 s
2 13 27 18 3
3 66 SSW 3
6 14 16 9
2 50 SW 0
7 10 8
0 3
28 WSW 4
13 8
9 2
0 36 w
4 15 2
12 13 19 65 WNW 1
8 21 35 38 27 130 NW 3
9 10 8
0 2
32 NNW 1
7 4
3 0
0 15 Variable 0
0 0
0 0
0 0
Total 32 124 204 178 91 57 686 Hours of calm in this stability class:
0 Hours of missing wind mea~urements in this stability class:
6 Hours of missing stability measurements in all stability classes:
0 Page 70 of 114
Clinton Power Station Period of Record: April - June 2023 Stability Class - Slightly Stable 60m-10m Delta-T (F)
Winds Measured at 60 Meters Wind Speed (in mph)
Wind Direction 1-3 4-7 8-12 13-18 19-24
> 24 Total N
0 1
9 8
0 0
18 NNE 0
3 12 12 0
0 27 NE 0
1 13 40 8
1 63 ENE 0
3 15 21 3
0 42 E
0 2
9 11 0
1 23 ESE 0
1 8
11 2
1 23 SE 0
4 16 16 2
0 38 SSE 1
5 45 21 1
0 73 s
0 3
35 32 3
4 77 SSW 0
2 21 31 7
23 84 SW 0
10 21 18 6
1 56 WSW 1
11 4
16 5
0 37 w
2 10 11 9
0 0
32 WNW 2
9 22 20 8
2 63 NW 1
3 12 2
0 0
18 NNW 0
4 7
10 2
1 24 Variable 0
0 0
0 0
0 0
Total 7
72 260 278 47 34 698 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 Page 71 of 114
Clinton Power Station Period of Record: April -
June 2023 Stability Class - Moderately Stable 60m-10m Delta-T (F)
Winds Measured at 60 Meters Wind Speed (in mph)
Wind Direction 1-3 4-7 8-12 13-18 19-24
> 24 Total N
0 2
6 0
0 0
8 NNE 1
0 4
6 0
0 11 NE 0
1 5
32 0
0 38 ENE 0
3 14 12 0
0 29 E
0 2
10 5
0 0
17 ESE 0
5 5
1 0
0 11 SE 0
4 5
2 0
0 11 SSE 0
2 10 1
0 0
13 s
0 1
6 1
0 0
8 SSW 0
3 11 10 0
0 24 SW 1
1 4
12 0
0 18 WSW 0
2 6
2 0
0 10 w
0 7
3 4
0 0
14 WNW 0
2 2
0 0
0 4
NW 0
2 2
0 0
0 4
NNW 1
0 2
0 0
0 3
Variable 0
0 0
0 0
0 0
Total 3
37 95 88 0
0 223 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 Page 72 of 114
Clinton Power Station Period of Record: April -
June 2023 Stability Class Extremely Stable 60m-10m Delta-T (F)
Winds Measured at 60 Meters Wind Speed (in mph)
Wind Direction 1-3 4-7 8-12 13-18 19-24
> 24 Total N
2 3
2 0
0 0
7 NNE 0
5 2
1 0
0 8
NE 1
6 1
4 0
0 12 ENE 0
4 14 19 0
0 37 E
1 7
8 3
0 0
19 ESE 1
6 2
0 0
0 9
SE 0
4 0
0 0
0 4
SSE 1
3 1
0 0
0 5
s 0
0 3
0 0
0 3
SSW 0
3 4
0 0
0 7
SW 1
0 6
1 0
0 8
WSW 0
3 3
0 0
0 6
w 0
12 5
0 0
0 17 WNW 0
4 3
0 0
0 7
NW 1
8 3
0 0
0 12 NNW 1
6 2
0 0
0 9
Variable 0
0 0
0 0
0 0
Total 9
74 59 28 0
0 170 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 classes:
0 Clinton Power Station Page 73 of 114
Period of Record: July -
2023 Stability Class Unstable Delta-T (F)
Winds Measured at 10 Meters Wind Speed (in mph)
Wind Direction 1-3 4-7 8-12 13-18 19-24
> 24 Total N
0 5
2 0
0 0
7 NNE 0
1 8
0 0
0 9
NE 0
5 0
0 0
0 5
ENE 0
1 0
0 0
0 1
E 0
0 0
0 0
0 0
ESE 0
1 0
0 0
0 1
SE 0
4 0
0 0
0 4
SSE 0
3 1
0 0
0 4
s 0
2 10 0
0 0
12 SSW 0
0 1
0 0
0 1
SW 0
0 3
0 0
0 3
WSW 0
1 4
0 0
0 5
w 0
1 7
3 0
0 11 WNW 0
2 3
0 0
0 5
NW 0
0 9
0 0
0 9
NNW 0
3 7
0 0
0 10 Variable 0
0 0
0 0
0 0
Total 0
29 55 3
0 0
87 Hours of calm in this class:
0 Hours of missing wind measurements in this stability class:
0 Hours of missing stability measurements in all stability classes:
4 Page 74 of 114
Clinton Power Station Period of Record: July -
September 2023 Stability Class - Moderately Unstable 60m-10m Delta-T (F)
Winds Measured at 10 Meters Wind Speed (in mph)
Wind Direction 1-3 4-7 8-12 13-18 19-24
> 24 Total N
0 1
2 0
0 0
3 NNE 0
4 7
0 0
0 11 NE 0
11 2
0 0
0 13 ENE 0
7 0
0 0
0 7
E 1
5 0
0 0
0 6
ESE 0
5 0
0 0
0 5
SE 0
7 0
0 0
0 7
SSE 1
4 0
0 0
0 5
s 0
8 8
0 0
0 16 SSW 0
6 7
1 0
0 14 SW 0
4 8
2 0
0 14 WSW 0
3 13 0
0 0
16 w
0 6
9 0
0 0
15 WNW 0
3 1
0 0
0 4
NW 0
8 6
0 0
0 14 NNW 0
3 4
0 0
0 7
Variable 0
0 0
0 0
0 0
Total 2
85 67 3
0 0
157 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:
4 Page 75 of 114
\
Clinton Power Station Period of Record: July -
September 2023 Stability Class - Slightly Unstable 60m-10m Delta-T (F)
Winds Measured at 10 Meters 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
4 2
0 0
0 6
NE 1
10 3
0 0
0 14 ENE 0
5 1
0 0
0 6
E 0
2 0
0 0
0 2
ESE 0
9 0
0 0
0 9
SE 1
25 0
0 0
0 26 SSE 1
6 0
0 0
0 7
s 1
15 2
0 0
0 18 SSW 1
10 8
2 0
0 21 SW 0
4 6
0 0
0 10 WSW 0
10 9
1 0
0 20 w
0 6
12 0
0 0
18 WNW 2
5 6
0 0
0 13 NW 2
11 2
1 0
0 16 NNW 1
7 4
0 0
0 12 Variable 0
0 0
0 0
0 0
Total 10 131 58 4
0 0
203 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:
4 Page 76 of 114
Clinton Power Station Period of Record: July -
September 2023 Stability Class - Neutral 60m-10m Delta-T (F)
Winds Measured at 10 Meters Wind Speed (in mph)
Wind Direction 1-3 4-7 8-12 13-18 19-24
> 24 Total N
3 41 4
0 0
0 48 NNE 4
27 10 1
0 0
42 NE 4
45 11 0
0 0
60 ENE 3
19 1
0 0
0 23 E
7 13 0
0 0
0 20 ESE 4
9 0
0 0
0 13 SE 12 25 2
0 0
0 39 SSE 14 32 6
0 0
0 52 s
7 33 19 0
0 0
59 SSW 4
20 18 1
0 0
43 SW 2
25 10 2
0 0
39 WSW 1
24 12 0
0 0
37 w
4 23 15 0
0 0
42 WNW 6
18 17 1
0 0
42 NW 0
38 7
2 0
0 47 NNW 6
16 4
0 0
0 26 Variable 0
0 0
0 0
0 0
Total 81 408 136 7
0 0
632 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:
4 Page 77 of 114
Clinton Power Station Period of Record:
September 2023 Stability Class Slightly Stable 60m-10m Delta-T (F)
Winds Measured at 10 Meters Wind Speed (in mph)
Wind Direction 1-3 4-7 8-12 13-18 19-24
> 24 Total N
5 19 0
1 0
0 25 NNE 7
9 3
0 0
0 19 NE 14 42 3
0 0
0 59 ENE 7
12 0
0 0
0 19 E
16 18 0
0 0
0 34 ESE 18 29 2
0 0
0 49 SE 29 41 1
0 0
0 71 SSE 11 41 1
0 0
0 53 s
6 69 6
0 0
0 81 SSW 9
44 18 1
0 0
72 SW 8
34 14 0
0 0
56 WSW 12 15 5
0 0
0 32 w
7 11 0
0 0
0 18 WNW 11 12 5
0 0
0 28 NW 12 34 1
0 0
0 47 NNW 5
9 0
0 0
0 14 Variable 0
0 0
0 0
0 0
Total 177 439 59 2
0 0
677 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:
4 Page 78 of 114
Clinton Power Station Period of Record: July -
September 2023 Stability Class - Moderately Stable 60m-10m Delta-T (F)
Winds Measured at 10 Meters Wind Speed (in mph)
Wind Direction 1-3 4-7 8-12 13-18 19-24
> 24 Total N
10 6
0 0
0 0
16 NNE 11 11 0
0 0
0 22 NE 22 29 0
0 0
0 51 ENE 7
5 0
0 0
0 12 E
15 10 0
0 0
0 25 ESE 12 3
0 0
0 0
15 SE 8
8 0
0 0
0 16 SSE 11 8
0 0
0 0
19 s
2 2
0 0
0 0
4 SSW 12 9
0 0
0 0
21 SW 8
7 0
0 0
0 15 WSW 6
10 0
0 0
0 16 w
13 0
0 0
0 0
13 WNW 6
4 0
0 0
0 10 NW 14 5
0 0
0 0
19 NNW 4
3 0
0 0
0 7
Variable 0
0 0
0 0
0 0
Total 161 120 0
0 0
0 281 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:
4 Page 79 of 114
Clinton Power Station Period of Record: July -
September 2023 Stability Class - Extremely Stable 60m-10m Delta-T (F)
Winds Measured at 10 Meters Wind Speed (in mph)
Wind Direction 1-3 4-7 8-12 13-18 19-24
> 24 Total N
6 0
0 0
0 0
6 NNE 14 1
0 0
0 0
15 NE 31 30 0
0 0
0 61 ENE 7
1 0
0 0
0 8
E 2
0 0
0 0
0 2
ESE 3
0 0
0 0
0 3
SE 5
0 0
0 0
0 5
SSE 2
0 0
0 0
0 2
s 2
0 0
0 0
0 2
SSW 1
0 0
0 0
0 1
SW 7
1 0
0 0
0 8
WSW 8
0 0
0 0
0 8
w 10 0
0 0
0 0
10 WNW 16 0
0 0
0 0
16 NW 11 1
0 0
0 0
12 NNW 7
0 0
0 0
0 7
Variable 0
0 0
0 0
0 0
Total 132 34 0
0 0
0 166 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:
4 Page 80 of 114
Clinton Power Station Period of Record: July -
September 2023 Stability Class - Extremely Unstable 60m-10m Delta-T (F)
Winds Measured at 60 Meters Wind Speed (in mph)
Wind Direction 1-3 4-7 8-12 13-18 19-24
> 24 Total N
0 0
5 1
0 0
6 NNE 0
0 5
3 0
0 8
NE 0
3 2
0 0
0 5
ENE 0
0 2
0 0
0 2
E 0
0 0
0 0
0 0
ESE 0
1 0
0 0
0 1
SE 0
1 6
0 0
0 7
SSE 0
0 2
1 0
0 3
s 0
0 3
7 0
0 10 SSW 0
0 3
0 0
0 3
SW 0
0 1
0 0
0 1
WSW 0
0 2
4 0
0 6
w 0
1 3
5 1
0 10 WNW 0
0 5
1 0
0 6
NW 0
0 6
2 0
0 8
NNW 0
0 7
4 0
0 11 Variable 0
0 0
0 0
0 0
Total 0
6 52 28 1
0 87 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:
4 Page 81 of 114
Clinton Power Station Period of Record: July -
September 2023 Stability Class - Moderately Unstable 60m-10m Delta-T (F)
Winds Measured at 60 Meters 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
3 6
1 0
0 10 NE 0
6 6
0 0
0 12 ENE 0
6 5
0 0
0 11 E
0 4
1 0
0 0
5 ESE 0
5 0
0 0
0 5
SE 0
4 5
0 0
0 9
SSE 0
1 1
2 0
0 4
s 0
5 9
4 0
0 18 SSW 0
2 11 2
0 0
15 SW 0
0 5
3 2
0 10 WSW 0
1 10 7
0 0
18 w
0 3
6 4
0 0
13 WNW 0
1 2
0 0
0 3
NW 0
4 7
0 1
0 12 NNW 0
2 5
2 0
0 9
Variable 0
0 0
0 0
0 0
Total 0
48 80 26 3
0 157 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:
4 Page 82 of 114
Clinton Power Station Period of Record: July -
September 2023 Stability Class - Slightly Unstable 60m-10m Delta-T (F)
Winds Measured at 60 Meters Wind Speed (in mph)
Wind Direction 1-3 4-7 8-12 13-18 19-24
> 24 Total N
0 3
1 1
0 0
5 NNE 0
0 3
2 0
0 5
NE 0
7 7
0 0
0 14 ENE 0
2 2
1 0
0 5
E 0
3 0
0 0
0 3
ESE 0
12 2
0 0
0 14 SE 0
21 2
0 0
0 23 SSE 1
5 2
0 0
0 8
s 0
12 10 1
1 0
24 SSW 1
2 6
2 1
0 12 SW 0
7 7
4 1
0 19 WSW 0
3 8
2 0
0 13 w
0 4
9 3
0 0
16 WNW 0
4 2
5 0
0 11 NW 0
12 5
1 0
0 18 NNW 0
6 4
3 0
0 13 Variable 0
0 0
0 0
0 0
Total 2
103 70 25 3
0 203 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:
4 Page 83 of 114
Clinton Power Station Period of Record:
September 2023 Stability Class - Neutral 60m-10m Delta-T (F)
Winds Measured at 60 Meters Wind Speed (in mph)
Wind Direction 1-3 4-7 8-12 13-18 19-24
> 24 Total N
2 20 23 5
0 0
50 NNE 2
13 9
7 1
0 32 NE 1
14 32 11 0
0 58 ENE 0
10 8
1 0
0 19 E
2 14 7
1 0
0 24 ESE 3
12 1
0 0
0 16 SE 3
32 11 3
0 0
49 SSE 3
22 22 8
1 0
56 s
4 10 15 20 0
0 49 SSW 3
9 23 8
1 0
44 SW 1
17 14 4
2 0
38 WSW 2
16 14 8
0 0
40 w
1 16 14 10 0
0 41 WNW 1
14 13 10 2
0 40 NW 3
7 26 4
2 0
42 NNW 3
9 16 6
0 0
34 Variable 0
0 0
0 0
0 0
Total 34 235 248 106 9
0 632 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:
4 Page 84 of 114
Clinton Power Station Period of Record: July -
September 2023 Stability Class - Slightly Stable 60m-10m Delta-T (F)
Winds Measured at 60 Meters Wind Speed (in mph)
Wind Direction 1-3 4-7 8-12 13-18 19-24
> 24 Total N
0 8
12 3
0 0
23 NNE 3
5 7
5 0
0 20 NE 1
5 17 11 0
0 34 ENE 1
6 18 9
0 0
34 E
1 6
12 5
0 0
24 ESE 0
14 24 15 1
0 54 SE 0
25 61 3
0 0
89 SSE 1
11 48 9
0 0
69 s
2 6
49 20 1
0 78 SSW 0
5 35 29 1
0 70 SW 0
7 16 17 0
0 40 WSW 1
12 10 8
0 0
31 w
0 7
14 5
0 0
26 WNW 1
9 10 6
0 0
26 NW 1
8 27 7
0 0
43 NNW 1
3 10 1
0 1
16 Variable 0
0 0
0 0
0 0
Total 13 137 370 153 3
i 677 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:
4 Page 85 of 114
Clinton Power Station Period of Record: July -
2023 Stability Class Moderately Stable Delta-T (F)
Winds Measured at 60 Meters Wind Speed (in mph)
Wind Direction 1-3 4-7 8-12 13-18 19-24
> 24 Total N
0 2
5 2
0 0
9 NNE 2
2 14 1
0 0
19 NE 1
5 10 13 0
0 29 ENE 2
6 14 8
0 0
30 E
1 4
14 6
0 0
25 ESE 1
1 13 5
0 0
20 SE 0
7 12 1
0 0
20 SSE 1
3 10 7
0 0
21 s
0 6
2 1
0 0
9 SSW 2
2 13 1
0 0
18 SW 0
1 10 1
0 0
12 WSW 0
7 7
2 0
0 16 w
0 4
14 0
0 0
18 WNW 0
2 7
0 0
0 9
NW 0
2 9
0 0
0 11 NNW 2
4 8
2 0
0 16 Variable 0
0 0
0 0
0 0
Total 12 58 162 50 0
0 282 Hours of calm in this class:
0 Hours of missing wind measurements in this class:
0 Hours of missing s measurements in all stability classes:
4 Page 86 of 114
Clinton Power Station Period of Record:
September 2023 Stability Class Extremely Stable 60m-10m Delta-T (F)
Winds Measured at 60 Meters Wind Speed (in Wind Direction 1-3 4-7 8-12 13-18 19-24
> 24 Total N
1 2
5 0
0 0
8 NNE 0
4 4
1 0
0 9
NE 1
8 8
5 0
0 22 ENE 1
8 11 13 0
0 33 E
0 3
11 2
0 0
16 ESE 0
7 8
0 0
0 15 SE 1
1 3
0 0
0 5
SSE 0
4 1
0 0
0 5
s 0
2 1
0 0
0 3
SSW 0
1 2
0 0
0 3
SW 1
1 5
0 0
0 7
WSW 0
0 7
0 0
0 7
w 0
3 6
0 0
0 9
WNW 1
3 5
0 0
0 9
NW 1
4 6
0 0
0 11 NNW 0
2 2
0 0
0 4
Variable 0
0 0
0 0
0 0
Total 7
53 85 21 0
0 166 Hours of calm in this stability class:
0 Hours of missing wind measurements in this class:
0 Hours of stability measurements in all stability classes:
4 Clinton Power Station Page 87 of 114
Period of Record: October -
December 2023 Stability Class - Extremely Unstable 60m-10m Delta-T (F)
Winds Measured at 10 Meters Wind Speed (in mph)
Wind Direction 1-3 4-7 8-12 13-18 19-24
> 24 Total N
0 0
5 0
0 0
5 NNE 0
0 0
0 0
0 0
NE 0
0 0
0 0
0 0
ENE 0
0 0
0 0
0 0
E 0
0 0
0 0
0 0
ESE 0
0 0
0 0
0 0
SE 0
0 0
0 0
0 0
SSE 0
0 1
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
0 0
0 0
WNW 0
0 0
0 0
0 0
NW 0
0 4
0 0
0 4
NNW 0
0 4
0 0
0 4
Variable 0
0 0
0 0
0 0
Total 0
0 14 0
0 0
14 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 Page 88 of 114
Clinton Power Station Period of Record: October -
December 2023 Stability Class - Moderately Unstable 60m-10m Delta-T (F)
Winds Measured at 10 Meters Wind Speed (in mph)
Wind Direction 1-3 4-7 8-12 13-18 19-24
> 24 Total N
0 0
5 0
0 0
5 NNE 0
0 2
1 0
0 3
NE 0
0 0
0 0
0 0
ENE 0
0 0
0 0
0 0
E 0
0 0
0 0
0 0
ESE 0
0 0
0 0
0 0
SE 0
4 0
0 0
0 4
SSE 0
0 0
0 0
0 0
s 0
0 1
0 0
0 1
SSW 0
1 2
0 0
0 3
SW 0
0 2
0 0
0 2
WSW 0
0 0
0 0
0 0
w 0
0 0
3 0
0 3
WNW 0
0 4
2 0
0 6
NW 0
1 11 1
0 0
13 NNW 0
3 3
2 0
0 8
Variable 0
0 0
0 0
0 0
Total 0
9 30 9
0 0
48 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 Page 89 of 114
Clinton Power Station Period of Record: October -
December 2023 Stability Class Slightly Unstable 60m-10m Delta-T (F)
Winds Measured at 10 Meters 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
1 2
0 0
0 3
NE 0
1 4
0 0
0 5
ENE 0
3 0
0 0
0 3
E 0
0 0
0 0
0 0
ESE 0
1 1
0 0
0 2
SE 0
2 0
0 0
0 2
SSE 0
0 0
0 0
0 0
s 2
7 8
0 0
0 17 SSW 0
6 12 4
0 0
22 SW 0
1 5
0 0
0 6
WSW 0
0 11 0
0 0
11 w
0 3
6 2
0 0
11 WNW 0
2 1
4 1
0 8
NW 0
2 14 3
0 0
19 NNW 0
2 2
0 0
0 4
Variable 0
0 0
0 0
0 0
Total 2
34 70 13 1
0 120 Hours of calm in this stability class:
0 Hours of missing wind measurements in this st~bility class:
0 Hours of missing stability measurements in all stability classes:
0 Page 90 of 114
Clinton Power Station Period of Record: October -
December 2023 Stability Class - Neutral 60m-10m Delta-T (F)
Winds Measured at 10 Meters Wind Speed (in mph)
Wind Direction 1-3 4-7 8-12 13-18 19-24
> 24 Total N
1 23 36 1
0 0
61 NNE 1
8 28 5
0 0
42 NE 0
14 7
0 0
0 21 ENE 1
9 11 0
0 0
21 E
3 5
18 0
0 0
26 ESE 1
12 6
0 0
0 19 SE 3
22 6
0 0
0 31 SSE 4
36 18 0
0 0
58 s
3 45 53 4
0 0
105 SSW 2
13 74 42 0
0 131 SW 3
13 20 3
0 0
39 WSW 1
8 24 5
1 0
39 w
1 16 48 13 0
0 78 WNW 1
16 50 32 3
0 102 NW 0
10 70 18 11 0
109 NNW 1
7 46 1
0 0
55 Variable 0
0 0
0 0
0 0
Total 26 257 515 124 15 0
937 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 Page 91 of 114
Clinton Power Station Period of Record: October -
December 2023 Stability Class - Slightly Stable 60m-10m Delta-T (F)
Winds Measured at 10 Meters Wind Speed (in mph)
Wind Direction 1-3 4-7 8-12 13-18 19-24
> 24 Total N
1 16 6
0 0
0 23 NNE 0
9 8
0 0
0 17 NE 3
4 0
0 0
0 7
ENE 1
13 2
0 0
0 16 E
6 13 4
0 0
0 23 ESE 2
17 0
0 0
0 19 SE 10 46 9
2 0
0 67 SSE 11 48 8
0 0
0 67 s
3 60 58 2
0 0
123 SSW 1
40 89 33 0
0 163 SW 2
32 14 0
0 0
48 WSW 3
25 8
2 0
0 38 w
6 20 3
0 0
0 29 WNW 6
32 19 0
0 0
57 NW 3
24 31 1
0 0
59 NNW 6
17 10 0
0 0
33 Variable 0
0 0
0 0
0 0
Total 64 416 269 40 0
0 789 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 Page 92 of 114
Clinton Power Station Period of Record: October -
December 2023 Stability Class - Moderately Stable 60m-10m Delta-T (F)
Winds Measured at 10 Meters Wind Speed (in mph)
Wind Direction 1-3 4-7 8-12 13-18 19-24
> 24 Total N
1 1
0 0
0 0
2 NNE 1
6 0
0 0
0 7
NE 2
4 0
0 0
0 6
ENE 2
1 0
0 0
0 3
E 2
1 0
0 0
0 3
ESE 5
3 0
0 0
0 8
SE 4
16 0
0 0
0 20 SSE 5
15 0
0 0
0 20 s
4 24 5
0 0
0 33 SSW 1
14 2
0 0
0 17 SW 0
11 0
0 0
0 11 WSW 6
4 0
0 0
0 10 w
6 11 0
0 0
0 17 WNW 2
7 0
0 0
0 9
NW 3
8 1
0 0
0 12 NNW 2
2 0
0 0
0 4
Variable 0
0 0
0 0
0 0
Total 46 128 8
0 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:
0 Page 93 of 114
Clinton Power Station Period of Record: October -
December 2023 Stability Class -
Extremely Stable 60m-10m Delta-T (F)
Winds Measured at 10 Meters Wind Speed (in mph)
Wind Direction 1-3 4-7 8-12 13-18 19-24
> 24 Total N
4 0
0 0
0 0
4 NNE 1
0 0
0 0
0 1
NE 10 6
0 0
0 0
16 ENE 6
0 0
0 0
0 6
E 9
0 0
0 0
0 9
ESE 7
1 0
0 0
0 8
SE 9
0 0
0 0
0 9
SSE 1
0 0
0 0
0 1
s 1
3 0
0 0
0 4
SSW 4
6 1
0 0
0 11 SW 2
4 0
0 0
0 6
WSW 5
3 0
0 0
0 8
w 11 4
0 0
0 0
15 WNW 2
0 0
0 0
0 2
NW 6
4 1
0 0
0 11 NNW 6
1 0
0 0
0 7
Variable 0
0 0
0 0
0 0
Total 84 32 2
0 0
0 118 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 Page 94 of 114
Clinton Power Station Period of Record: October -
December 2023 Stability Class -
Extremely Unstable 60m-10m Delta-T (F)
Winds Measured at 60 Meters Wind Speed (in mph)
Wind Direction 1-3 4-7 8-12 13-18 19-24
> 24 Total N
0 0
1 4
0 0
5 NNE 0
0 0
0 0
0 0
NE 0
0 0
0 0
0 0
ENE 0
0 0
0 0
0 0
E 0
0 0
0 0
0 0
ESE 0
0 0
0 0
0 0
SE 0
0 0
0 0
0 0
SSE 0
0 0
1 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
0 0
0 0
WNW 0
0 0
0 0
0 0
NW 0
0 0
5 0
0 5
NNW 0
0 0
3 0
0 3
Variable 0
0 0
0 0
0 0
Total 0
0 1
13 0
0 14 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 Page 95 of 114
Clinton Power Station Period of Record: October -
December 2023 Stability Class - Moderately Unstable 60m-10m Delta-T (F)
Winds Measured at 60 Meters Wind Speed (in mph)
Wind Direction 1-3 4-7 8-12 13-18 19-24
> 24 Total N
0 0
2 3
0 0
5 NNE 0
0 0
3 0
0 3
NE 0
0 0
0 0
0 0
- ENE 0
0 0
0 0
0 0
E 0
0 0
0 0
0 0
ESE 0
0 1
0 0
0 1
SE 0
0 3
0 0
0 3
SSE 0
0 0
0 0
0 0
s 0
1 1
1 0
0 3
SSW 0
0 0
2 0
0 2
SW 0
0 1
0 0
0 1
WSW 0
0 0
0 0
0 0
w 0
0 0
0 3
0 3
WNW 0
0 1
4 2
0 7
NW 0
0 6
6 2
0 14 NNW 0
1 3
1 1
0 6
Variable 0
0 0
0 0
0 0
Total 0
2 18 20 8
0 48 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 Page 96 of 114
Clinton Power Station Period of Record: October -
December 2023 Stability Class - Slightly Unstable 60m-10m Delta-T (F)
Winds Measured at 60 Meters Wind Speed (in mph)
Wind Direction 1-3 4-7 8-12 13-18 19-24
> 24 Total N
0 2
2 1
0 0
5 NNE 0
0 0
2 0
0 2
NE 0
2 1
3 0
0 6
ENE 0
2 1
0 0
0 3
E 0
0 0
0 0
0 0
ESE 0
1 1
1 0
0 3
SE 0
0 1
0 0
0 1
SSE 1
0 0
0 0
0 1
s 0
6 13 3
1 0
23 SSW 0
3 0
12 1
0 16 SW 0
1 5
2 0
0 8
WSW 0
0 7
3 0
0 10 w
0 2
6 3
0 0
11 WNW 0
0 1
1 4
2 8
NW 0
2 5
10 2
0 19 NNW 0
0 1
3 0
0 4
Variable 0
0 0
0 0
0 0
Total 1
21 44 44 8
2 120 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 Page 97 of 114
Clinton Power Station Period of Record: October -
December 2023 Stability Class - Neutral 60m-10m Delta-T (F)
Winds Measured at 60 Meters Wind Speed (in mph)
Wind Direction 1-3 4-7 8-12 13-18 19-24
> 24 Total N
0 6
18 28 5
0 57 NNE 0
3 8
17 2
0 30 NE 0
2 8
10 0
0 20 ENE 1
1 7
11 3
0 23 E
1 8
0 11 11 0
31 ESE 1
4 6
6 1
0 18 SE 1
12 16 5
4 0
38 SSE 2
20 23 23 1
0 69 s
1 16 42 40 22 3
124 SSW 2
4 14 53 29 0
102 SW 0
4 19 7
2 0
32 WSW 2
5 21 15 3
3 49 w
1 0
29 38 7
0 75 WNW 1
2 26 39 32 9
109 NW 0
1 19 60 13 10 103 NNW 0
4 11 38 4
0 57 Variable 0
0 0
0 0
0 0
Total 13 92 267 401 139 25 937 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 Page 98 of 114
Clinton Power Station Period of Record: October -
December 2023 Stability Class - Slightly Stable 60m-10m Delta-T (F)
Winds Measured at 60 Meters Wind Speed (in mph)
Wind Direction 1-3 4-7 8-12 13-18 19-24
> 24 Total N
0 0
10 13 0
0 23 NNE 0
1 4
11 0
0 16 NE 0
3 3
1 0
0 7
ENE 1
2 4
6 0
0 13 E
0 4
6 14 1
0 25 ESE 0
1 8
4 0
0 13 SE 0
7 51 17 4
0 79 SSE 0
6 31 32 1
0 70 s
1 4
42 90 23 1
161 SSW 0
1 26 59 28 8
122 SW 1
2 28 17 1
0 49 WSW 1
0 10 16 1
0 28 w
0 4
19 8
1 0
32 WNW 1
5 24 21 0
0 51 NW 1
9 24 29 2
0 65 NNW 0
3 16 16 0
0 35 Variable 0
0 0
0 0
0 0
Total 6
52 306 354 62 9
789 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 Page 99 of 114
Clinton Power Station Period of Record: October -
December 2023 Stability Class - Moderately Stable 60m-10m Delta-T (F)
Winds Measured at 60 Meters 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
1 6
4 0
0 11 NE 0
1 3
0 0
0 4
ENE 0
0 1
2 0
0 3
E 0
0 3
0 0
0 3
ESE 0
0 4
0 0
0 4
SE 0
1 13 4
0 0
18 SSE 0
0 13 11 0
0 24 s
0 0
9 11 0
0 20 SSW 0
0 7
22 0
0 29 SW 0
0 4
10 0
0 14 WSW 0
1 4
3 0
0 8
w 0
2 8
5 0
0 15 WNW 0
0 11 2
0 0
13 NW 0
0 5
3 0
0 8
NNW 0
0 3
0 0
0 3
Variable 0
0 0
0 0
0 0
Total 0
8 97 77 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:
0 Page 100 of 114
Clinton Power Station Period of Record: October -
December 2023 Stability Class - Extremely Stable 60m-10m Delta-T (F)
Winds Measured at 60 Meters 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 2
0 3
0 0
0 5
NE 1
3 6
1 0
0 11 ENE 0
4 1
2 0
0 7
E 1
1 4
0 0
0 6
ESE 0
2 4
0 0
0 6
SE 2
4 6
0 0
0 12 SSE 0
2 8
1 0
0 11 s
1 2
4 0
0 0
7 SSW 0
4 3
1 0
0 8
SW 1
2 3
5 0
0 11 WSW 1
2 5
5 0
0 13 w
0 0
1 4
0 0
5 WNW 0
2 4
0 0
0 6
NW 0
0 0
3 0
0 3
NNW 0
1 2
0 0
0 3
Variable 0
0 0
0 0
0 0
Total 9
30 57 22 0
0 118 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 Page 101 of 114
SECTION 8 ODCM OPERATIONAL REMEDIAL REQUIREMENT REPORT In accordance with CPS ODCM 3.1.1 Action G.1, 3.2.1 Action F.1, and 3.2.2 Action G.1; NON-FUNCTIONAL radioactive liquid and gaseous effluent monitoring instrumentation channels remaining in a NON-FUNCTIONAL condition for greater than the designated time shall be reported in the Annual Radioactive Effluent Release Report.
During the course of 2023, there were three (3) instances where a gaseous effluent monitoring instrumentation channel remained in a NON-FUNCTIONAL condition for greater than a seventy-two (72) hour period. The three instances are documented below.
Throughout 2023, there was one (1) instance of missed ODCM required samples and two (2) instances of delayed ODCM required samples. There was one (1) instance in which the required LLDs were not met for a weekly ODCM surveillance. A summary of the sample exceptions are captured below.
During the course of 2023, there was one (1) instance where the Constellation fleet radiochemistry crosscheck results performed by the vendor lab, Teledyne Brown Engineering, were not in agreement with the Eckert and Ziegler values. The instance is documented below.
Additionally, there was one (1) instance where the gross-alpha radiochemistry crosscheck was not performed by Clinton during 2023. This instance is documented below.
January 27, 2021-Issue Report# 04398363 0RIX-PR008, Standby Gas Treatment System Exhaust AXM, Channel 4 (Intermediate-Range Noble Gas Activity Monitor) was declared Non-Functional on 1/27/21. The AXM was previously declared Non-Functional when setting conditions for IMD to commence the intermediate-range noble gas channel calibration. The Cd-109 source check following the calibration of channel 4 failed high, and with the AS LEFT counts high out of specification, 0RIX-PR008 remained in Non-Functional Status. 0RIX-PR008 is required to either be restored to Functional status within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> or an immediate initiation of the preplanned alternate method of monitoring the appropriate parameter must be promptly put in place. Although the instrument was not placed back into service within the 72 hour8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> timeframe, the equipment for the pre-planned alternate method was immediately staged to satisfy ODCM 3.2.2 Condition F.
The Work Order to troubleshoot and repair 0RIX-PR008 channel 4 was placed o~ the Plan of Day (POD) as a B3 priority due and Work Order 05122086 was generated. The extended Non-Functional condition is due to the troubleshooting and repair time required to obtain a new Cd-109 source and replace the GM detector.
August 31, 2021 Issue Report# 04444333 0RIX-PR008, Standby Gas Treatment System Exhaust AXM, was declared Non-Functional on 8/31/21 due to the sample flow indicating 3.5 LPM when the sample pump was not in operation. Sample flow rate is required to be between 4-6 LPM when the pump is running per the requirement in 9000.02D001. Because the sample pump was not running and the sample flow indication was reading abnormally, 0RIX-PR008 was declared to remain in the Non-Functional status. 0RIX-PR008 is required to either be restored to Functional status within 72 Page 102 of 114
hours or an immediate initiation of the preplanned alternate method of monitoring the appropriate parameter must be promptly put in place. Although the instrument was not placed back into service within the 72 hour8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> timeframe, the equipment for the pre-planned alternate method was immediated staged to satisfy ODCM 3.2.2 Action F. Work Order 051595182 was generated to replace and calibrate ORIX-PRODS flow indication. This work was given a status of C7 for priority. The extended Non-Functional condition is due to the troubleshooting and repair time required to replace and calibrate flowmeter 0FI-PR0088.
March 23, 2023 - Issue Report# 04564258 0RIX-PR012 SAMPLE PUMP IS FAILED 0RIX-PR012, Station HVAC Exhaust AXM, was declared Non-functional on 3/23/23 due to intermittent flow issues during the weekly chemistry surveillance for noble gas and tritium sampling. Sample flow rate was observed at 0 LPM when the requirement per 9000.02D001 states flow rate must be 4-6 LPM when the pump is running. Chemistry established alternate sampling from the in-service Station HVAC Exhaust PRM to obtain the weekly samples. Work Order 05349266 was performed on 3/30/23 by IMD to perform troubleshooting and repair of the failed sample pump. The pump was started several times and flow was monitored with no issues identified. On 3/31/23 the flow issues presented again and 0RIX-PR012 remained Non-Functional. There were no other instances during 2023 where the sample pump was non-functional. 0RIX-PR012 is required to either be restored to Functional status within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> or an immediate lnititation of the preplanned alternate method of monitoring the appropriate parameter must be promptly put in place. Although the instrument was not placed back into service within the 72 hour8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> timeframe, the equipment for the pre-planned alternate method was immediately staged to satisfy ODCM 3.2.2 Action F. The Work Order to correct the issue with the 0RIX-PR012 sample pump was placed on the Plan of Day (POD) as a 83 priority, and Work Order 05493927 was generated.
The extended Non-Functional condition is due to the troubleshooting and repair time required to obtain and replace the sample pump.
September 28, 2023 - Issue Report# 4705738 DELAYED ODCM NG & TRITIUM A SGTS (VG) run was initiated at 0315 on 9/28/23 as a result of CRVICS testing during C1R21. At this time, ORIX-PRODS not available to obtain grab samples due to the AR/PR LAN being secured to support a power outage (Unit Sub P). ORIX-PRODS is not required to FUNCTIONAL in Modes 4 or 5, however, noble gas and tritium samples for SGTS are required to be obtained "upon initiation of flow without delay in a controlled manner" for each release in accordance with ODCM, CY-CL-170-301, Table 4.4.1-1 8.1. In the event ORIX-PRODS is not available for sampling, the grab samples can be taken through the alternate sampling method from the in-service PRM. The chemistry samples were not obtained until the following shift at 0837 and 0908 on 9/28/23, resulting in grab samples taken upwards of five hours following the start-up of VG. This does not constitue obtaining a sample without delay per the ODCM. The delay in obtaining samples was due to a miscommunication over the requirements for sampling VG. The delayed noble gas and tritium results were as anticipated.
October 5, 2023 - Issue Report# 04708574 Page 103 of 114
ODCM/RETS LLDs Not Met for Weekly Gas Effluent SR Particulate and iodine filter media were collected from 0RIX-PR003, Standby Gas Treatment System Exhaust PRM, in accordance with ODCM, CY-CL-170-301, Table 4.4.1-1 B.2 and B.3 to meet the weekly surveillance requirements. Due to very minimal sample volume collected on the filter media with a total run time of 13 minutes {0.22 hours2.546296e-4 days <br />0.00611 hours <br />3.637566e-5 weeks <br />8.371e-6 months <br />) during the week, the ODCM required LLDs could not be met for 1-133. The particulate filter was analzyed for 4.29 hours3.356481e-4 days <br />0.00806 hours <br />4.794974e-5 weeks <br />1.10345e-5 months <br /> on the HPGe detectors and was able to meet ODCM LLD requirements. The iodine cartridge was analzyed for 7.22 hours2.546296e-4 days <br />0.00611 hours <br />3.637566e-5 weeks <br />8.371e-6 months <br /> and was able to meet ODCM LLD requirements for 1-131, but the LLD requirement for 1-133 was not met. Because VG ran the week prior, the results for 1-133 activity would be used in dose projections as a conservative measure. No 1-133 activity was seen in the previous week's VG run and therefore, no 1-133 was included in the weekly dose projections.
November 7, 2023 - Issue Report# 04715931 ODCM SAMPLE WITH START OF VG A SGTS {VG) run was manually initiated at 0247 at 11/7 /23 to maintain secondary containment differential pressure after VF dampers closed from loss of air. Due to lack of chemistry resources, the noble gas and tritium samples were collected on the following shift at 0926 on 11/7 /23. The ODCM, CY-CL-170-301, Table 4.4.1-1, B.1 requires a noble gas and tritium sample to be obtained "upon initiation of flow without delay in a controlled manner." The chemistry samples were taken upwards of six hours following the start-up of VG which does not constitute obtaining a sample without delay. The delayed noble gas and tritium results were as anticipated.
December 1, 2023 - Issue Report# 04721436 ODCM SAMPLES COLLECTED OUTSIDE SURVEILLANCE GRACE PERIOD On 12/1/23 the ODCM surveillance requirement for obtaining samples IAW CY-CL-17-301 Table 4.4.1-1 was completed outside of the surveillance grace period. Per ODCM 4.4.1.1 and 4.4.1.2, the frequency of the Surveillance Requirement to sample and analyze is performed I AW ODCM Table 4.4.1-1. Table 4.4.1-1.A.1 states that Noble Gas and Tritium are sampled and analyzed weekly. Additionally, Table 4.4.1-1.A.2 and A.3 state that Iodine and Particulate, respectively, are collected continuously and analyzed weekly. Table notations further define this sampling and analysis period for iodine/particulate in Table 4.4.1-1 Table Notation 4 which states, "Samples shall be changed at least once per 7 days and analysis shall be completed within 48 hours5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br /> after changing, or after removal from sampler." Additionally, ODCM Table 1-1 Surveillance Frequency Notation defines notation W (Weekly) with a frequency of once per 7 days. The surveillance interval is interpreted to begin once the previous surveillance has been completed.
Section 4.0 Surveillance Requirements of the ODCM provides additional guidance. Section 4.0.1 states, "Surveillance requirements shall be met during the OPERATIONAL MODES or other conditions specified for individual Controls unless otherwise stated in an individual Surveillance Requirement." Section 4.0.2 goes on to state, "Each Surveillance Requirement shall be performed within the specified time interval with: a. A maximum allowable extension not to exceed 25% of the surveillance interval." Section 4.0.3 states, "Failure to perform a Surveillance Requirement, whether such failure is experienced during the performance of the surveillance or between performances of the surveillance, within the allowed surveillance interval, defined by Specification 4.0.2, shall constitute noncompliance with the FUNCTIONALITY requirements for a Control. The time limits of the ACTION requirements are applicable at the time it is identified that Page 104 of 114
a Surveillance Requirement has not been performed. The ACTION requirements may be delayed for up to 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> to permit the completion of the surveillance when the allowable outage time limits of the ACTION requirements are less than 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />. Surveillance Requirements do not have to be performed on non-functional equipment."
Because the 12/1/23 surveillance for ODCM gaseous effluent sampling and analysis was completed 9 days following the collection on 11/22/23, the surveillance is considered to have been completed outside of the 7-day surveillance interval with additional grace period of 25% (or 8-days). The 11/22/23 surveillance was scheduled a day early (originally scheduled on 11/23/23) to support Chemistry resources with the upcoming holiday. The following week, the surveillance was post-poned a day (originally scheduled for 11/30/23) due to a lack of chemistry resources.
Samples were collected on the 9th day and results were as anticipated. The surveillance was rescheduled within the ODCM required sampling frequency following the discovery.
January 18, 2024 - Issue Report# 04732328 RADIOCHEMISTRY CROSSCHECK RESULTS 4th QUARTER Multiple disagreements in the 4th quarter crosscheck results between Teledyne Brown and Eckert and Ziegler were identified. One discrepancy was the result of Eckert and Ziegler incorrectly entering a concentration for an isotope that was not present in the crosscheck sample. Another discrepancy by Eckert and Ziegler Analytics (EZA) was due to an error in dilution calculations. Once those issues were resolved, three disagreements remained for Ce-141, Cr-51, and Cs-137 activity. Teledyne Brown reprepared/reanalyzed the crosscheck sample in a different geometry which was a better match for the sample type, and the results were in agreement. Nonconformance report {NCR No. NCR 23-25) was prepared and submitted along with a revised analysis report of the rerun with a different geometry.
March 14, 2024 - Issue Report# 04758078 GROSS-ALPHA INTERLABORATORY CROSSCHECKS NOT PERFORMED It was discovered the interlaboratory crosscheck analysis for gross-alpha had not been performed for the previous ten years IAW RG 4.15, Rev. 1 and USAR CH0l Section 8 and USAR CH12 Section 5. Because gross-alpha is performed once per 31 days on samples from Station HVAC Exhaust and SGTS Exhaust, a crosscheck is required to be performed annually. It was discovered Clinton historically sent the gaseous effluent samples to TBE for both HTD and gross-alpha analyses on a monthly frequency, and since the gross-alpha analysis was being performed at the vendor lab {which participated in the interlaboratory comparison program), compliance with RG 4.15 was met.
However, this changed in 2014 and gross-alpha analysis was performed by TBE for the last time on the October 2014 HVAC and SGTS particulate filters. The change in process resulted in the gross-alpha analysis being performed on-site by RP techs as part of the 9947.01 surveillance. Communications with EZA confirmed that since 2014, Clinton has not ordered a gross-alpha crosscheck source. Because no gross-alpha crosscheck source was ordered, Clinton has not been participating in the interlaboratory _comparison program for this analysis. A gross-alpha crosscheck source has been ordered through EZA for analysis in May 2024, and arrangements have been made to send the monthly composite to TBE for gross-alpha analysis beginning in March 2024.
Page 105 of 114
SECTION 9 CHANGES TO RADIOACTIVE WASTE TREATMENT SYSTEMS In accordance with Section 6.2 of the CPS ODCM, licensee-initiated changes to the liquid, gaseous or solid radioactive waste treatment systems shall be reported in the Annual Radioactive Effluent Release Report.
There were no permanent changes to the Radioactive Waste Treatment Systems during the course of the 2023 reporting period; therefore, there is no documentation required in the 2023 Annual Radioactive Effluent Release Report.
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SECTION 10 NEW LOCATIONS FOR DOSE CALCULATION AND/OR ENVIRONMENTAL MONITORING The following is a summary of the 2023 Annual Land Use Census. It shows changes in locations for dose calculations and/or environmental monitoring identified by the Annual Land Use Census. The distance of the receptor is being listed in the report in lieu of the name of the resident. This is being done to maintain and respect the privacy of the residents.
1.0 Nearest Residents TABLE 19 Nearest Residence The nearest residents identified in each of the sixteen (16) sectors are shown below.
N 1.50 A
1.50 A
NNE 1.50 A
1.50 A
NE 2.07 A
2.07 A
ENE 4.20*
A*
2.86 C/A*
E 1.67 A
1.67 A
ESE 5.14 A
5.14 A
SE 4.44 C/T*/A 4.44 C/A SSE 2.90 A
2.90 A
s 4.78 4
4.78 A
SSW 4.68 A
4.68 A
SW 1.17 A
1.17 A
WSW 3.62 A
3.62 A
w 1.95 T/A 1.95 T/A WNW 2.63 A
2.63 A
NW 2.65 A
2.65 A
NNW 2.05 A
2.05 A
- Indicates any changes from the previous year (l)nfant (C)hild (T)een (A)dult Page 107 of 114
2.0 Broadleaf Garden Census Fifty-seven (57) gardens within a five (S) kilometer radius were located in the sixteen (16) geographical sectors surrounding CPS. Fifteen (15) gardens contained broad leaf vegetation, which were specifically identified for this report. Although other crops were identified within these areas, they are not addressed as part of this report.
The nearest gardens greater than fifty (SO) square-meters and producing broadleaf vegetation identified in each of the sixteen (16) geographical sectors are shown below.
TABLE 20 Nearest Broadleaf Garden N
4.87*
A 1.50 A
NNE 4.78 A
4.78 A
NE
>8
>8*
ENE 4.35 A*
4.35*
C/A E
1.67 A
1.67*
A*
ESE
>8
>8 SE
>8
>8 SSE 4.32 C/T/A 4.32*
C/T/A*
s
>8
>8 SSW
>8
>8.
>8*
5.61*
A*
WSW
>8*
3.66 A
w 3.32*
A*
>8*
WNW 2.63 A
2.63 A
NW 4.70 C/A 4.70 C/A NNW 3.76*
A 2.05 A
- Indicates any changes from the previous year (l)nfant (C)hild (T)een (A)dult Page 108 of 114
3.0 Milking Animal Census Milking animals within the sixteen (16) geographical sectors were located within five (5) miles surrounding CPS. These milking animals were either used for the nursing of the animal's offspring or used for meat production for the resident's own personal use and sold commercially. There were no residents that milked their animals for human consumption.
Milking animals were specifically identified for this report. Although other livestock were identified within these areas, they are not addressed as part of this report.
The nearest milking animals identified in each of the sixteen (16) geographical sectors are shown below.
N NNE NE ENE E
WNW NW NNW 1.50 5.75*
>8
>8
>8
>8
>8
>8
>8
>8
>8 4.32
>8
>8
>8 2.05 TABLE 21 Nearest Milking Animal A
A*
A*
A 1.50
>8
>8
>8
>8
>8
>8
>8
>8
>8
>8 4.32
>8
>8
>8 2.05
- Indicates any changes from the previous year (l)nfant (C)hild (T)een A
A/T A
(A)dult Page 109 of 114
SECTION 11 CORRECTIONS TO DATA REPORTED IN PREVIOUS REPORTS There were administrative changes identified against two previously submitted Annual Radioactive Effluent Release Reports resulting in errata data submittal to the Commision.
In the 2022 ARERR report, a transpositional error was identified in the gaseous effluent release table (Table 2). Table 2 Section A, reported 1.51E+00 Curies for the Ar-41 and total fission gases released during the third quarter. The correct value for Ar-41 and total fission gases released in the third quarter of 2022 is listed under Section 4, Table 1 as 1.51+01 Curies. This error did not affect the reporting of dose or dose rate as the correct value for Ar-41 was used in the calculations. Attachment 1 depicts the corrected pages. Attt In the 2021 and 2022 ARERR reports, it was discovered that the Non-Functional status of 0RIX-PR008 was not reported under Section 8, ODCM Operational Remedial Requirement Report. During the course of 2021 and 2022, there were two (2) instances where a gaseous effluent monitoring instrumentation channel remained in a NON-FUNCTIONAL condition for greater than a seventy-two (72) hour period. 0RIX-PR008 was declared Non-Functional on 1/27 /21 and has remained Non-Functional.
Therefore, the Non-Functional status is required to be reported in the ARERR in accordance with CPS ODCM, CV-CL-170-301, 3.2.2 Action G.1. Attachment 2 and Attachment 3 depict the corrected pages.
Page 110 of 114
Mixed Mode Release Elevated Release Ground-Level Release A. Fissfon Gases Xe13s Kr8Sm Xe133 Kras Ar41 Total for Period B. Iodines 'l*
1131 1133 Total for Period
,C. _Particul~tes CoGo y91m [2]
Nbgs ce141 crs1 Mns4 Na24 (2J Cd109 CsBa [2J Coss zn65 Total for Period
" D.. 'Gross Alpha:
Gross Alpha
,:E. Tritium..*
Total for Period
- F.
- Carb'on~14*
Total for Period ATTACHMENT 1 UPDATED 2022 TABLE 2 Gaseous Effluents - Nuclides Released Clinton Power Station YEAR: 2022 X
I Continuous Mode Batch Mode
- Units>'
~
tr Qu~rter 1:111 Quarter 2q1,.rQuarter,'3,l11,,
Ci 3.35E+00
<LLD
<LLD Ci
<LLD
<LLD
<LLD Ci
<LLD
<LLD
<LLD Ci
<LLD
<LLD
<LLD Ci 1.65E+00 3.40E+00 1.SlE+0l Ci 5.00E+00 3.40E+00 1.SlE+0l L '-
u*,~,.
Ci
<LLD
<LLD
<LLD Ci
<LLD
<LLD
<LLD Ci
<LLD
<LLD
<LLD
- i" '
Ci
<LLD
<LLD
<LLD Ci
<LLD
<LLD
<LLD Ci
<LLD
<LLD
<LLD Ci
<LLD
<LLD
<LLD Ci
<LLD
<LLD
<LLD Ci 1.19E-05
<LLD
<LLD Ci
<LLD
<LLD
<LLD Ci
<LLD
<LLD
<LLD Ci
<LLD
<LLD
<LLD Ci
<LLD
<LLD
<LLD Ci
<LLD
<LLD
<LLD Ci 1.19E-05
<LLD
<LLD Ci
<LLD
<LLD
<LLD
,',i Ci 6.99E+00 6.97E+00 6.63E+00
. <','i
)
Ci 4.0lE+00 4.35E+00 4.38E+00 I.
X
- Quarte.r 4;l~li
<LLD
<LLD
<LLD
<LLD 5.95E+00 5.95E+00
- ,
- *; ];
<LLD
<LLD
<LLD
,_;,1_, ', '.:;;
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD 8.66E+00 i
'\,
4.41E+00
[1]
The lower the value of the actual sample activity - with respect to background activity -
the greater the counting error. Proportionally, large errors are reported for the various components of CPS gaseous effluents because of their consistent low sample activity.
[2]
Half-life is less than 8 days, therefore not included in Table 1 Summation.
Page 111 of 114
ATTACHMENT 2 UPDATED 2021 SECTION 8 ODCM OPERATIONAL REMEDIAL REQUIREMENT REPORT In accordance with CPS ODCM 3.1.1 Action G.1, 3.2.1 Action F.1, and 3.2.2 Action G.1; NON-FUNCTIONAL radioactive liquid and gaseous effluent monitoring instrumentation channels remaining in a NON-FUNCTIONAL condition for greater than the designated time shall be reported in the Annual Radioactive Effluent Release Report.
During the course of 2021, there were two (2) instances where a gaseous effluent monitoring instrumentation channel remained in a NON-FUNCTIONAL condition for greater than a seventy-two (72) hour period. The two instances are documented below.
January 27, 2021 - Issue Report# 04398363 0RIX-PR008, Standby Gas Treatment System Exhaust AXM, Channel 4 (Intermediate-Range Noble Gas Activity Monitor) was declared Non-Functional on 1/27 /21. The AXM was previously declared Non-Functional when setting conditions for IMO to commence the intermediate-range noble gas channel calibration. The Cd-109 source check following the calibration of channel 4 failed high, and with the AS LEFT counts high out of specification, 0RIX-PR008 remained in Non-Functional Status. 0RIX-PR008 is required to either be restored to Functional status within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> or an immediate initiation of the preplanned alternate method of monitoring the appropriate parameter must be promptly put in place. Although the instrument was not placed back into service within the 72 hour8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> timeframe, the equipment for the pre-planned alternate method was immediated staged to satisfy ODCM 3.2.2 Action F. The Work Order to troubleshoot and repair 0RIX-PR008 channel 4 was placed on the Plan of Day (POD) as a B3 priority due and Work Order 05122086 was generated. The extended Non-Functional condition is due to the troubleshooting and repair time required to obtain a new Cd-109 source and replace the GM detector.
August 31, 2021-Issue Report# 04444333 0RIX-PR008, Standby Gas Treatment System Exhaust AXM, was declared Non-Functional on 8/31/21 due to the sample flow indicating 3.5 LPM when the sample pump was not in operation. Sample flow rate is required to be between 4-6 LPM when the pump is running per the requirement in 9000.02D01. Because the sample pump was not running and the sample flow indication was reading abnormally, 0RIX-PR008 was declared to remain in the Non-Functional status. 0RIX-PR008 is required to either be restored to Functional status within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> or an immediate initiation of the preplanned alternate method of monitoring the appropriate parameter must be promptly put in place. Although the instrument was not placed back into service within the 72 hour8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> timeframe, the equipment for the pre-planned alternate method was immediated staged to satisfy ODCM 3.2.2 Action F. Work Order 051595182 was generated to replace and calibrate 0RIX-PR008 flow indication. This work was given a status of C7 for priority. The extended Non-Functional condition is due to the troubleshooting and repair time required to replace and calibrate flowmeter 0FI-PR008B.
Page 112 of 114
ATTACHMENT 3 UPDATED 2022 SECTION 8 ODCM OPERATIONAL REMEDIAL REQUIREMENT REPORT In accordance with CPS ODCM 3.1.1 Action G.1, 3.2.1 Action F.1, and 3.2.2 Action G.1; NON-FUNCTIONAL radioactive liquid and gaseous effluent monitoring instrumentation channels remaining in a NON-FUNCTIONAL condition for greater than the designated time shall be reported in the Annual Radioactive Effluent Release Report.
During the course of 2022, there were two (2) instances where a gaseous effluent monitoring instrumentation channel remained in a NON-FUNCTIONAL condition for greater than a seventy-two (72) hour period. The two instances are documented below.
January 27, 2021 - Issue Report# 04398363 0RIX-PR008, Standby Gas Treatment System Exhaust AXM, Channel 4 (Intermediate-Range Noble Gas Activity Monitor) was declared Non-Functional on 1/27/21. The AXM was previously declared Non-Functional when setting conditions for IMD to commence the intermediate-range noble gas channel calibration. The Cd-109 source check following the calibration of channel 4 failed high, and with the AS LEFT counts high out of specification, 0RIX-PR008 remained in Non-Functional Status. 0RIX-PR008 is required to either be restored to Functional status within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> or an immediate initiation of the preplanned alternate method of monitoring the appropriate parameter must be promptly put in place. Although the instrument was not placed back into service within the 72 hour8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> timeframe, the equipment for the pre-planned alternate method was immediated staged to satisfy ODCM 3.2.2 Action F. The Work Order to troubleshoot and repair 0RIX-PR008 channel 4 was placed on the Plan of Day (POD) as a B3 priority due and Work Order 05122086 was generated. The extended Non-Functional condition is due to the troubleshooting and repair time required to obtain a new Cd-109 source and replace the GM detector.
August 31, 2021 - Issue Report# 04444333 0RIX-PR008, Standby Gas Treatment System Exhaust AXM, was declared Non-Functional on 8/31/21 due to the sample flow indicating 3.5 LPM when the sample pump was not in operation. Sample flow rate is required to be between 4-6 LPM when the pump is running per the requirement in 9000.02D01. Because the sample pump was not running and the sample flow indication was reading abnormally, 0RIX-PR008 was declared to remain in the Non-Functional status. 0RIX-PR008 is required to either be restored to Functional status within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> or an immediate initiation of the preplanned alternate method of monitoring the appropriate parameter must be promptly put in place. Although the instrument was not placed back into service within the 72 hour8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> timeframe, the equipment for the pre-planned alternate method was immediated staged to satisfy ODCM 3.2.2 Action F. Work Order 051595182 was generated to replace and calibrate 0RIX-PR008 flow indication. This work was given a status of C7 for priority. The extended Non-Functional condition is due to the troubleshooting and repair time required to replace and calibrate flowmeter 0FI-PR008B.
Page 113 of 114
SECTION 12 CHANGES TO THE OFFSITE DOSE CALCULATION MANUAL The Offsite Dose Calculation Manual (ODCM) was last revised in September 2022.
Revision 26 of the ODCM is not included with this submittal since no updates were made in 2023.
Page 114 of 114