RBG-48277, 2023 Annual Radiological Environmental Operating Report
| ML24101A184 | |
| Person / Time | |
|---|---|
| Site: | River Bend  |
| Issue date: | 04/10/2024 |
| From: | Crawford R Entergy Operations |
| To: | Office of Nuclear Reactor Regulation, Document Control Desk |
| References | |
| RBG-48277 | |
| Download: ML24101A184 (1) | |
Text
- ) entergy RBG-48277 April 10, 2024 ATTN: Document Control Desk U.S. Nuclear Regulatory Commission Washington, DC 20555-0001
Subject:
2023 Annual Radiological Environmental Operating Report River Bend Station - Unit 1 Renewed Operating License No. NPF-47 Docket No. 50-458 Randy Crawford Manager Regulatory Assurance 225-381-4177 Enclosed is the River Bend Station (RBS) Annual Radiological Environmental Operating Report for the period of January 1, 2023, through December 31, 2023. This report is submitted in accordance with the RBS Technical Specifications, Section 5.6.2.
Should you have any questions regarding the enclosed, please contact Randy Crawford, at (225) 381-4177.
Sincerely, Randy Crawford RTC/twf
Enclosure:
2023 Annual Radiological Environmental Operating Report cc:
NRC Senior Resident Inspector - River Bend Station, Unit 1
Enclosure 2023 Annual Radiological Environmental Operating Report
Plant: River Bend Station Page 1 of 44 YEAR: 2023 Document Number: RBG-48277 Annual Radiological Environmental Operating Report
Plant: River Bend Station I
Year: 2023 I
Page 2 of 44 Annual Radiological Environmental Operating Report TABLE OF CONTENTS 1.0 EXECUTIVE
SUMMARY
............................................................................................................. 5 1.1 Radiological Environmental Monitoring Program................................................................... 5 1.2 Reporting Levels................................................................................................................... 5 1.3 Comparison to State and Federal Program........................................................................... 6 1.4 Sample Deviations................................................................................................................ 6 1.5 Program Modifications........................................................................................................... 6
2.0 INTRODUCTION
........................................................................................................................ ?
2.1 Radiological Environmental Monitoring Program.................................................................. 7 2.2 Pathways Monitored.............................................................................................................. ?
2.3 Land Use Census.................................................... *-***......................................................... 7 3.0 RADIOLOGICAL ENVIRONMENTAL SAMPLING PROGRAM REQUIREMENTS...................... 8 4.0 INTERPRETATION AND TRENDS OF RESULTS.................................................................... 17 4.1 Air Particulate and Radioiodine Sample Results.................................................................. 17 4.2 Thermoluminescent Dosimetry (TLD) Sample Results........................................................ 18 4.3 Waterborne Sample Results................................................................................................ 18 4.3.1 Surface Water Results.............................................................................................................. 19 4.3.2 Groundwater Results................................................................................................................ 19 4.3.3 Sediment Sample Results......................................................................................................... 19 4.4 Ingestion Sample Results......................................... -.......................................................... 19 4.4.1 Fish Sample Results.................................................................................................................. 19 4.4.2 Food Products Sample Results.................................................................................................. 19 4.4.3 Milk Sample Results................................................................................................................... 20 4.5 Land Use Census Results.................................................................................................. 20 4.6 lnterlaboratory Comparison Results................................................................................... 22 5.0 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM
SUMMARY
.......................... 22
Plant: River Bend Station Year:2023 I
Page 3 of 44 Annual Radiological Environmental Operating Report ATTACHMENTS - Sample Deviations........................................................................................................ 26 - Monitoring Results Tables............................................................................................ 28 - lnterlaboratory Comparison Program Results............................................................... 39 TABLES Table 1: Exposure Pathway - Airborne........................................................................................ 8 Table 2: Exposure Pathway - Direct Radiation............................................................................ 9 Table 3: Exposure Pathway - Waterborne................................................................................. 12 Table 4: Exposure Pathway - Ingestion..................................................................................... 13 Table 5: Land Use Census - 2023 Nearest Residence and Milk Animal Within 5 Miles............. 21 Table 6: Radiological Environmental Monitoring Program Summary......................................... 23 Table 7: Sample Deviations Table............................................................................................. 26 Table 8: Air Particulate Data Table............................................................................................ 28 Table 9: Radioiodine Cartridge Data Table............................................................................... 29 Table 10: Thermoluminescent Dosimeters - lndicators.............................................................. 30 Table 11: Thermoluminescent Dosimeters - Special Interest Areas.......................................... 31 Table 12: Thermoluminescent Dosimeters - Controls................................................................ 31 Table 13: Surface Water-Gamma............................................................................................ 32 Table 14: Surface Water - Tritium............................................................................................. 33 Table 15: Groundwater-Gamma.............................................................................................. 34 Table 16: Groundwater - Tritum................................................................................................ 35 Table 17: Sediment-Gamma................................................................................................... 36 Table 18: Fish - Gamma............................................................................................................ 37 Table 19: Food Products - Gamma........................................................................................... 38 Table 20: Analytics Environmental Radioactivity Cross Check Program....................................41 Table 21: DOE's Mixed Analyte Performance Evaluation Program (MAPEP)............................ 43 Table 22: ERA Environmental Radioactivity Cross Check Program..........................................44
Plant: River Bend Station I
Year:2023 I
Page 4 of 44 Annual Radiological Environmental Operating Report FIGURES Figure 1: Exposure Pathway..................................................................................................... 14 Figure 2: Sample Collection Sites - Near Field......................................................................... 15 Figure 3: Sample Collection Sites - Far Field............................................................................ 16 Figure 4: Gross Beta Indicator Results (2023)........................................................................... 17 Figure 5: TLD Indicator Results (2023) Versus Control Data (1986-2023)................................. 18
1.0 1.1
1.2 Plant
River Bend Station I
Year:2023 I Page 5 of 44 Annual Radiological Environmental Operating Report EXECUTIVE
SUMMARY
Radiological Environmental Monitoring Program The Annual Radiological Environmental Operating Report presents data obtained through analyses of environmental samples collected for River Bend Station (RBS)
Radiological Environmental Monitoring Program (REMP) for the period January 1 through December 31, 2023. This report fulfills the requirements of RBS Technical Specification 5.6.2 of Appendix A to RBS License Number NPF-47.
All required lower limit of detection (LLD) capabilities were achieved in all sample analyses during 2023, as required by the RBS Technical Requirement Manual (TRM).
No measurable levels of radiation above baseline levels attributable to River Bend Station operation were detected in the vicinity of RBS. The 2023 Radiological Environmental Monitoring Program thus substantiated the adequacy of source control and effluent monitoring at River Bend Station with no observed impact of plant operations on the environment.
River Bend Station established the REMP prior to the station's becoming operational 1985 to provide data on background radiation and radioactivity normally present in the area. RBS has continued to monitor the environment by sampling air, water, sediment, fish and food products, as well as measuring direct radiation. RBS also samples milk if milk-producing animals used for human consumption are present within five miles (8 km) of the plant.
The REMP includes sampling indicator and control locations within an approximate 20-mile radius of the plant. The REMP utilizes indicator locations near the site to show any increases or buildup of radioactivity that might occur due to station operation and control locations farther away from the site to indicate the presence of only naturally occurring radioactivity. RBS personnel compare indicator results with control and preoperational results to assess any impact RBS operation might have had on the surrounding environment.
In 2023, environmental samples were collected for radiological analysis. The results of indicator locations were compared with control locations and previous studies. It was concluded that no significant relationship exists between RBS operation and effect on the area around the plant. The review of 2023 data showed radioactivity levels in the environment were undetectable in many locations and near background levels in significant pathways.
Reporting Levels No samples equaled or exceeded reporting levels.
Plant: River Bend Station Year:2023 I
Page 6 of 44 Annual Radiological Environmental Operating Report 1.3 Comparison to State and Federal Program 1.4 1.5 RBS personnel compared REMP data to state monitoring programs as results became available. Historically, the programs used for comparison have included the U.S. Nuclear Regulatory Commission (NRC) Thermoluminescent Dosimeter (TLD)
Direct Radiation Monitoring Network and the Louisiana Department of Environmental Quality - Office of Environmental Compliance (LDEQ-OEC).
The NRC TLD Network Program was discontinued in 1998. Historically these results have compared to those from the RBS REMP. RBS TLD results continue to remain similar to the historical average and continue to verify that plant operation is not affecting the ambient radiation levels in the environment.
The LDEQ-OEC and the RBS REMP entail similar radiological environmental monitoring program requirements. These programs include co-located air samples and splitting or sharing sample media such as water, sediment and fish. Both programs have obtained similar results over previous years.
Sample Deviations During 2023, environmental sampling was performed tor eight media types addressed in the ODCM and for direct radiation. A total of 444 samples of the 444 scheduled were obtained. Of the scheduled samples, 100 percent were collected and analyzed in accordance with the requirements specified in the ODCM. contains the listing of sample deviations and actions taken.
Program Modifications There were no program modifications during the reporting period.
2.0 2.1
2.2 Plant
River Bend Station I
Year:2023 I
Page 7 of 44 Annual Radiological Environmental Operating Report INTRODUCTION Radiological Environmental Monitoring Program River Bend Station established the REMP to ensure that plant operating controls properly function to minimize any associated radiation endangerment to human health or the environment. The REMP is designed for:
Analyzing applicable pathways for anticipated types and quantities of radionuclides released into the environment.
Considering the possibility of a buildup of long-lived radionuclides in the environment and identifying physical and biological accumulations that may contribute to human exposures.
Considering the potential radiation exposure to plant and animal life in the environment surrounding River Bend Station.
Correlating levels of radiation and radioactivity in the environment with radioactive releases from station operation.
Pathways Monitored The airborne, direct radiation, waterborne and ingestion pathways are monitored as required by RBS TRM 3.12.1. A description of the REMP utilized to monitor the exposure pathways is described in the attached Tables and Figures.
Section 4.0 of this report provides a discussion of 2023 sampling results with Section 5.0 providing a summary of results for the monitored exposure pathways.
2.3 Land Use Census RBS conducts a land use census biennially, as required by 3.12.2 of the TRM. The purpose of this census is to identify changes in uses of land within five miles of RBS that would require modifications to the REMP and the Offsite Dose Calculation Manual (ODCM/TRM). The next scheduled land use census will be performed in 2024. Section 4.5 on the report contains a narrative on the results of the 2022 land use census.
Plant: River Bend Station Year:2023 Page 8 of 44 Annual Radiological Environmental Operating Report 3.0 RADIOLOGICAL ENVIRONMENTAL SAMPLING PROGRAM REQUIREMENTS Table 1: Exposure Pathway - Airborne Requirement Sample Point Description Sampling and Collection Type and Frequency Of Analyses Distance and Direction Frequency RADIOIODINE AND PARTICULATES AN1 (0.9 km W) - RBS site Hwy 4 samples from close to the 2 SITE 965; 0.4 km south of Activity Continuous sampler operation Radioiodine Canisters 131 analysis every two BOUNDARY locations, in different sectors, of Center.
with sample collection every two weeks.
the highest calculated annual average ground AP1 (0.9 km WNW) - Behind weeks, or more frequently if Air Particulate - Gross beta radioactivity analysis level D/Q.
River Bend Station Activity required by dust loading.
Center.
following filter change.
AQ1 (0.6km NW) - River Bend Access Rd, south of the North FLEX building AR1 (0.6km NNW) - River Bend Access Rd, north of Main Parking Lot entrance RADIOIODINE AND PARTICULATES AQS2 (5.8 km NW) - St. Francis Continuous sampler operation Radioiodine Canisters 131 analysis every two 1 sample from the vicinity of a community Substation on US Hwy. (Bus.)
with sample collection every two weeks.
61 in St. Francisville.
weeks, or more frequently if having the highest calculated annual average required by dust loading.
Air Particulate - Gross beta radioactivity analysis ground level D/Q.
following filter change.
RADIOIODINE AND PARTICULATES AGC (17.0 km SE) - Entergy Continuous sampler operation Radioiodine Canisters 131 analysis every two 1 sample from a control location, as for Service Center compound in with sample collection every two weeks.
Zachary. (Control) weeks, or more frequently if example 15 - 30 km distance and in the least required by dust loading.
Air Particulate - Gross beta radioactivity analysis prevalent wind direction.
following filter change.
Plant: River Bend Station I
Year:2023 J
Page 9 of 44 Annual Radiological Environmental Operating Report Table 2: Exposure Pathway - Direct Radiation Requirement Sample Point Description Distance Sampling and Type and Frequency Of Analyses and Direction Collection Frequency TLDS TA1 (1.7 km N) - River Bend Training One ring of stations, one in each Center.
Quarterly mR exposure quarterly.
meteorological sector in the general area of TB1 (0.5 km NNE) - Utility pole near the SITE BOUNDARY.
River Bend Station cooling tower yard area.
TC1 (1.7 km NE)-Telephone pole at Jct. US Hwy. 61 and Old Highway 61.
- TD1 (1.6 km ENE) - Stub pole along WF7, 150m S of Jct. WF7 and US Hwy. 61.
TE1 (1.3 km E)- Stub pole along WF7, 1 km S of Jct. WF7 and US Hwy. 61.
TF1 (1.3 km ESE) - Stub pole along WF7, 1.6 km S of Jct. WF7 and US Hwy. 61.
TG1 (1.6 km SE) - Stub pole along WF7, 2 km S of Jct. WF7 and US Hwy. 61.
TH1 (1.7 km SSE)- Stub pole at power line crossing of WF7 (near Grants Bayou).
T J1 (1.5 km S) - Stub pole near River Bend Station Gate #23 on Powell Station Road (LA Hwy. 965).
Plant: River Bend Station Year: 2023 I Page 10 of 44 Annual Radiological Environmental Operating Report Table 2: Exposure Pathway - Direct Radiation Requirement Sample Point Description Distance Sampling and Type and Frequency Of Analyses and Direction Collection Frequency TLDS TK1 (0.9 km SSW) - Utility pole on One ring of stations, one in each Powell Station Road (LA Hwy. 965),
Quarterly mR exposure quarterly.
20 m S of River Bend Station River meteorological sector in the general area of Access Road.
the SITE BOUNDARY.
TL 1 (1.0 km SW) - First utility pole on Powell Station Road (LA Hwy. 965) S of former Illinois Central Gulf RR crossing.
TM1 (0.9 km WSW) - Third utility pole on Powell Station Road (LA Hwy. 965)
N of former Illinois Central Gulf RR crossing.
TN1 (0.9 km W) - Utility pole along Powell Station Road (LA Hwy. 965),
near garden and AN 1 air sampler location.
TP1 (0.9 km WNW) - Behind River Bend Station Activity Center at AP1 air sampler location.
TQ1 (0.6 km NW) - Across from MA-1 on RBS North Access Road.
TR1 (0.8 km NNW) - River Bend Station North Access Road across from Main Plant entrance.
Plant: River Bend Station Year: 2023
}
Page 11 of 44 Annual Radiological Environmental Operating Report Table 2: Exposure Pathway-Direct Radiation Requirement Sample Point Description Sampling and Type and Frequency Of Analyses Distance and Direction Collection Frequency TLDS TAC (15.8 km N) - Utility pole at Jct.
The balance of the stations (8) to be placed in of US Hwy. 61 and LA Hwy. 421, 7.9 Quarterly mR exposure quarterly.
special interest areas such as population km north of Bains. (Control) centers, nearby residences, schools, and in 1 TCS (12.3 km NE) - Utility pole at or 2 areas to serve as control locations.
gate to East Louisiana State Hospital in Jackson. (Special)
TEC (16.0 km E) - Stub pole at jct.
of Hwy. 955 and Greenbrier Road, 4.8 km North of Jct. of Hwys 955 and 964. (Control)
TGS (17.0 km SE) - Entergy Service Center compound in Zachary.
(Special)
TNS (6.0 km W) - Utility pole with electrical meter at west bank ferry landing (LA Hwy. 10). (Special)
TQS1 (4.0 km NW) - Utility pole front of Pentecostal church (opposite West Feliciana Parish Hospital) near Jct.
US Hwy. 61 and Commerce Street.
(Special)
TQS2 (5.8 km NW) - St. Francis Substation on business US Hwy. 61 in St. Francisville. (Special)
- TRS (9.2 km NNW) - Stub pole at Jct. of US Hwy. 61 and WF2 near Bains (West Feliciana High School).
(Special)
Plant: River Bend Station I
Year:2023 Page 12 of 44 Annual Radiological Environmental Operating Report Table 3: Exposure Pathway - Waterborne Sample Point Description Distance Sampling and Type and Frequency Of Analyses Requirement and Direction Collection Frequency SWU (5.0 km W) - Mississippi River about 4 km upstream from the plant Grab samples quarterly Gamma isotopic analysis and tritium analysis SURFACE WATER liquid discharge outfall, near LA Hwy.
quarterly.
1 sample upstream and 1 sample 10 ferry crossing.
downstream.
SWD (7. 75 km S) - Mississippi River about 4 km downstream from plant liquid discharge outfall, near paper mill.
WU (~470 m NNE) - Upland Terrace GROUNDWATER Aquifer well upgradient from plant.
Semiannually Gamma isotopic and tritium analysis semiannually.
Samples from 1 or 2 sources only if likely to WD (~470 m SW) - Upland Terrace be affected.
Aquifer well downgradient from plant.
SEDIMENT FROM SHORELINE SEDD (7.75 km S)- Mississippi River 1 sample from downstream area with existing about 4 km downstream from plant Annually Gamma isotopic analysis annually.
liquid discharge outfall, near paper or poter,tial recreational value I
mill.
Plant: River Bend Station I
Year: 2023 l Page 13 of 44 Annual Radiological Environmental Operating Report Table 4: Exposure Pathway-Ingestion Requirement Sample Point Description Distance Sampling and Collection Type and Frequency Of Analyses and Direction Frequency MILK If commercially available, 1 sample from Currently, no available milking animals Quarterly when animals are Gamma isotopic and 1-131 analysis quarterly when milking animals within 8 km distant where within 8 km of RBS.
on pasture.
animals are on pasture.
doses are calculated to be greater than 1 mrem per year.
1 sample from milking animals at a control location 15 - 30 km distant when an indicator location exists.
FISH AND INVERTEBRATES FD (7.75 km S) - One sample of a 1 sample of a commercially and/or commercially and/or recreationally Annually Gamma isotopic analysis on edible portions important species from downstream area recreationally important species in vicinity influenced by plant discharge.
annually of plant discharge area.
1 sample of similar species in area not FU (4.0 km WSW) - One sample of a commercially and/or recreationally influenced by plant discharge.
important species from upstream area not influenced by plant discharge.
FOOD PRODUCTS GN1 (0.9 km W)- Sampling will be 3 samples of one type of broadleaf performed in accordance with Table Quarterly during the growing Gamma isotopic and 1-131 analysis quarterly.
3.12.1-1 Section 4.a of the Technical vegetation grown near the SITE Requirements Manual.
season.
BOUNDARY location of highest predicted annual average ground level D/Q if milk GQ1 (0.6 km NW) - One sample of leafy sampling is not performed.
vegetation IAW Table 3.12.1-1 Section 1 sample of similar broad leaf vegetation 4.a of the Technical Requirements grown 15 - 30 km distant, if milk sampling Manual.
is not performed.
GR1 (0.6 km NNW) - One sample of leafy vegetation IAW Table 3.12.1-1 Section 4.a of the Technical Requirements Manual.
GQC (32.0 km NW) - One sample of similar vegetables from LA State Penitentiary at Angola. (Control)
Plant: River Bend Station I
Year: 2023 I Page 14 of 44 Annual Radiological Environmental Operating Report Figure 1: Exposure Pathway NUCLEAR POWER PLANT
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/ I Plant: River Bend Station I
Year:2023 I
Page 15 of 44 Annual Radiological Environmental Operating Report Figure 2: Sample Collection Sites - Near Field Q
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G __ Onsite Garden
Plant: River Bend Station I
Year: 2023 Annual Radiological Environmental Operating Report p
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Plant: River Bend Station I
Year:2023 I
Page 17 of 44 Annual Radiological Environmental Operating Report 4.0 INTERPRETATION AND TRENDS OF RESULTS 4.1 Air Particulate and Radioiodine Sample Results
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In 2023 there were no samples above the LLD for 1-131. Indicator gross beta air particulate results for 2023 were comparable to results obtained from 2013-2022 of the operational REMP. Also, the 2023 gross beta annual average was less than the average for preoperational levels. Results are reported as annual average picocuries per cubic meter (pCi/m3).
Monitoring Period 2013 - 2022 (Minimum Value) 2023 Average Value 2013-2022 (Maximum Value)
Preoperational Result 0.016 0.021 0.019 0.030 Gross beta activity is attributed to naturally occurring radionuclides. Table 6, which include gross beta concentrations and provide a comparison of the indicator and control means and ranges emphasizes the consistent trends seen in this pathway to support the presence of naturally occurring activity. Therefore, it can be concluded that the airborne pathway continues to be unaffected by River Bend Station operations.
FIGURE 4 Gross Beta Indicator Results (2023) 0.0500 X
0.0400 X
0.0300 0.0200 I
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0.0000.1 0101,23 0201 23 0301 23 04,01 23 05-01'23 06101,23 Oi01 23 08.01-23 090123 10;01,23 110123 1201 '23 0101 24 I *AN1 AP 1 *AOS2 xAQ1.. ~~~J
Plant: River Bend Station I
Year:2023 Page 18 of 44 Annual Radiological Environmental Operating Report 4.2 Thermoluminescent Dosimetry (TLD) Sample Results 4.3 River Bend Station reports measured dose as net exposure (field reading less transit reading) normalized to 90 days and relies on comparison of the indicator locations to the control as a measure of plant impact. River Bend Station's comparison of the indicator and special interest area TLD results to the control, as seen in Table 6, identified no noticeable trend that would indicate that the ambient radiation levels are being affected by plant operations. In addition, the indicator value of 13.9 millirem (mrem) shown in the TLD radiation dose comparison graph below shows the 2023 concentration is comparable to historic results. Overall. River Bend Station concluded that the ambient radiation levels are not being affected by plant operations.
FIGURE 5 TLD Indicator Results (2023) Versus Control Data (1986-2023) 20.00 18.00 X
X A
X A
16.00 14.00 V
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X X
X A
A X
X I
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- A X
X E12.oo X
10.00
- 8.00 6.00 X
- TA1 TB1 TC1 TD1 TE1 TF1 TG1 TH1 TJ1 TK1 TL1 TM1 TN1 TP1 TQ1 TR1 TLD Locations J -- +3-sigma Control -
- sigma Control 1st Qtr 2nd Qtr 3rd Qtr x
4th Qtr I Waterborne Sample Results Analytical results for 2023 surface water and groundwater water samples were similar to those reported in previous years. Gamma radionuclides and tritium analytical results for 2023 waterborne samples were below the ODCM-required LLD similar to those reported in previous years. These results are further explained below.
Plant: River Bend Station I
Year:2023 I Page 19 of 44 Annual Radiological Environmental Operating Report 4.3.1 Surface Water Results Samples were collected from one indicator and one control location and analyzed for gamma radionuclides and tritium. Tritium and gamma radionuclides were below detectable limits which is consistent with results seen in previous operational years.
Therefore, the operation of River Bend Station had no definable impact on this waterborne pathway during 2023.
4.3.2 Groundwater Results Samples were collected from one indicator and one control location. Groundwater samples were analyzed for gamma radionuclides and tritium. Gamma radionuclides and tritium concentrations were below the LLD limits at the indicator and control locations. The operation of River Bend Station had no definable impact on this waterborne pathway during 2023.
4.3.3 Sediment Sample Results 4.4 4.4.1 Sediment samples were collected from one indicator and one control location in 2023 and analyzed for gamma radionuclides. Gamma radionuclides were below the LLD limits at both indicator and control locations. River Bend Station operations had no significant impact on the environment or public by this waterborne pathway.
Ingestion Sample Results Fish Sample Results Fish samples were collected from one indicator and one control location and analyzed for gamma radionuclides. In 2023, gamma radionuclides were below detectable limits which are consistent with the preoperational monitoring period and operational results. Therefore, based on these measurements, River Bend Station operations had no significant radiological impact upon the environment or public by this ingestion pathway.
4.4.2 Food Products Sample Results The REMP has detected radionuclides prior to 1990 that are attributable to other sources. These include the radioactive plume release due to reactor core degradation at Chernobyl Nuclear Power Plant in 1986 and atmospheric weapons testing.
In 2023, food products samples were collected when available from three indicator and one control location and analyzed for gamma radionuclides. The 2023 levels remained undetectable, as has been the case in previous years. Therefore, based on these measurements, River Bend Station operations had no significant radiological impact upon the environment or public by this ingestion pathway.
Plant: River Bend Station Year:2023 I Page 20 of 44 Annual Radiological Environmental Operating Report 4.4.3 Milk Sample Results In 2023 milk samples within five miles (8 km} of River Bend Station were unable to be collected due to the unavailability of milk-producing animals used for human consumption. The River Bend Station Technical Requirements Manual requires collection of milk samples if available commercially within 8 km (5 miles) of the plant.
River Bend Station personnel collected food product samples to monitor the ingestion pathway, as specified in River Bend Station Technical Requirements Manual Table 3.12.1-1, because of milk unavailability. Food product sample results are in section 4.4.2.
4.5 Land Use Census Results The latest land use census (performed in 2022) did not identify any new locations that yielded a calculated dose or dose commitment greater than those currently calculated (see Table 5).
A garden census is not conducted pursuant to the footnote in the TRM (TLCO 3.12.2) that allows the sampling of broad leaf vegetation in the highest calculated average ground-level D/Q sector (Sector N) near site boundary in lieu of the garden census.
The land use census identified no changes in the new resident census.
There were no changes in the milk cows or food products in 2022.
Plant: River Bend Station Year: 2023 I Page 21 of 44 Annual Radiological Environmental Operating Report Table 5: Land Use Census -2022 Nearest Residence And Milk Animal Within Five Miles Nearest Range Range Sector Direction Nearest Milk Animal Comment Residence (Unit)
(Unit)
A N
5637 Hwy 61 2
St. Francisville, LA 70775 1.7 B
NNE 4549 Old Hwy 61 2
St. Francisville, LA 70775 1.4 C
NE 4553 Old Hwy 61 2
St. Francisville, LA 70775 1.5 D
ENE 12657 Powell Station Rd.
2 St. Francisville, LA 70775 1.4 E
E 4635 Hwy 61 2
St. Francisville, LA 70775 2.4 F
ESE 12019 Fairview Way 2
Jackson, LA 70748 2.6 G
SE 3319 Hwy 964 2
Jackson, LA 70748 3.7 H
SSE 11813 Powell Station Rd.
2 St. Francisville, LA 70775 1.7 J
s 11649 Powell Station Rd.
2 St. Francisville, LA 70775 1.8 K
SSW 8909 Hwy 981 2
New Roads, LA 70760 6.6 L
SW 1, 2 M
WSW 8809 Hwy 981 2
New Roads, LA 70760 5.1 N
w 1, 2 p
WNW 10426 Old Field Rd.
2 St. Francisville, LA 70775 3.7 Q
NW 9537 Hwy 965 2
St. Francisville, LA 70775 1.3 R
NNW 9794 Hwy 965 2
St. Francisville, LA 70775 1.6 Comment 1
No Residence was located within a five-mile (8 km) radius of River Bend Station 3.
2 No Milk animals were found located within a five-mile (8 km) radius of River Bend Station 3.
4.6 Plant
River Bend Station I
Year: 2023 Page 22 of 44 Annual Radiological Environmental Operating Report lnterlaboratory Comparison Results contains result summary for lnterlaboratory Comparison program for Teledyne Brown Engineering to fulfill the requirements of River Bend Station's Technical Requirements Manual 3.12.3.
5.0 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM
SUMMARY
- 1.
Table 6, Radiological Environmental Monitoring Program Summary, summarizes data for the 2023 REMP program.
Plant: River Bend Station Year:2023 Page 23 of 44 Annual Radiological Environmental Operating Report Table 6: Radiological Environmental Monitoring Program Summary Sample Type Type/ Number B 2>
Indicator Locations Location <4>
Mean (F)13l Control Number of of Analyses<1>
LLD Mean (F)<3>
[Highest Annual Locations Mean Non Routine (Units)
[Range)
Mean)
[Range]
(F)13> [Range]
Results15>
Air Particulates c::J[:J 0.021 (130/130)
AR1 0.023 (26/26) 0.022 (26/26) CJ (pCi/m3)
[0.006 - 0.046]
(0.6 km NNW)
[0.015 - 0.040]
[0.014 - 0.042]
Airborne Iodine I 1-131 / 156 II 0.07 II
< LLD II N/A II N/A II
< LLD II 0
I (pCi/m3)
Indicator TLDs Gamma/64 (6) 13.9 (64/64)
TG1 16.7 (4/4)
N/A 0
(mR/Qtr)
[10.3/17.6]
(1.6 km SE)
[15.8/17.6]
Gamma I 24 (6) 14.2 (24/24)
TQS1 16 (4/4)
N/A 0
Special Interest
[12.2/17.3]
(4.0 km NW)
[14.7/17.3]
TLDs (mR/Qtr)
Gamma I 8 (6)
N/A TAC 15.7 (4/4) 15.2 (8/8) 0 Control TLDs (mR/Qtr)
(15.8 km N)
[14.1 /16.9]
[13.5/16.9]
H-3 / 8 700
< LLD N/A N/A
< LLD 0
GS/8 Mn-54 15
< LLD N/A N/A
< LLD 0
Co-58 15
< LLD N/A N/A
< LLD 0
Fe-59 30
< LLD N/A N/A
< LLD 0
Surface Water Co-60 15
< LLD 0
(pCi/L)
Zn-65 30
< LLD 0
Nb-95 15
< LLD N/A N/A
< LLD 0
1-131 15
< LLD N/A N/A
< LLD 0
Zr-95 30
< LLD N/A N/A
< LLD 0
Cs-134 15
< LLD N/A N/A
< LLD 0
Cs-137 18
< LLD N/A N/A
< LLD 0
Ba-140 60
< LLD N/A N/A
< LLD 0
La-140 15
< LLD N/A N/A
< LLD 0
Plant: River Bend Station I
Year: 2023 Page 24 of 44 Annual Radiological Environmental Operating Report Table 6: Radiological Environmental Monitoring Program Summary Sample Type Type/ Number B Indicator Locations Location (4l Mean (F)<3l Control Number of Mean (F)(3l
[Highest Annual Locations Mean Non Routine (Units) of Analyses(1l
[Range]
Mean]
[Range]
(F)(3l [Range]
Results(5l H-3 / 4 2000
< LLD N/A N/A
< LLD 0
GS/4 Mn-54 15
< LLD N/A N/A
< LLD 0
Co-58 15
< LLD N/A N/A
< LLD 0
Fe-59 30
< LLD N/A N/A
< LLD 0
Groundwater Co-60 15
< LLD 0
(pCi/L)
Zn-65 30
< LLD N/A N/A
< LLD 0
Nb-95 15
< LLD N/A N/A
< LLD 0
1-131 15
< LLD N/A N/A
< LLD 0
Zr-95 30
< LLD N/A N/A
< LLD 0
Cs-134 15
< LLD N/A N/A
< LLD 0
Cs-137 18
< LLD N/A N/A
< LLD 0
Ba-140 60
< LLD N/A N/A
< LLD 0
La-140 15
< LLD N/A N/A
< LLD 0
Plant: River Bend Station Year: 2023 Page 25 of 44 Annual Radiological Environmental Operating Report Table 6: Radiological Environmental Monitoring Program Summary 1 T T
/ N b B Indicator Locations Location (4>
(3>
Control Number of Sam(Up ~ ype ype um (~lr LLD (2)
Mean (F)(3)
[Highest Annual Mean (F)
Locations Mean Non Routine mts) of Analyses
[Range]
(3>
(S)
[Range]
Mean]
(F)
[Range]
Results Sediment Cs-134 150
< LLD N/A N/A
< LLD 0
GS/
2 WI II II II II I
(pCi/kg dry)
Cs-137 180
< LLD N/A N/A
< LLD 0
GS/2 Mn-54 130
< LLD N/A N/A
< LLD 0
Co-58 130
< LLD N/A N/A
< LLD 0
Fish Fe-59 260
< LLD N/A N/A
< LLD 0
(pCi/kg wet)
Co-60 130
< LLD N/A N/A
< LLD 0
Zn-65 260
< LLD N/A N/A
< LLD 0
Cs-134 130
< LLD N/A N/A
< LLD 0
Cs-137 150
< LLD N/A N/A
< LLD 0
Food Products 1-131
< LLD N/A N/A
< LLD 0
GS/20 w
[I]
(pCi/kg wet)
Cs-134 0
< LLD N/A N/A
< LLD 0
Cs-137 0
< LLD N/A N/A
< LLD 0
LEGEND:
(11 - GB= Gross beta; 1-131 = lodine-131; H-3 = Tritium; GS= Gamma scan.
(2l - LLD= Required lower limit of detection based on River Bend Station TRM.
(3l - Mean and range based upon detectable measurements only. Fraction of detectable measurements at specified locations is indicated in parenthesis (F).
(4l - Locations are specified (1) by name and (2) direction relative to reactor site.
(5l - Non-routine results are those which exceed ten times the control station value. If no control station value is available, the result is considered non-routine if it exceeds ten times the preoperational value for the location.
(5l - LLD is not defined in River Bend Station TRM.
Plant: River Bend Station I
Year: 2023 Page 26 of 44 Annual Radiological Environmental Operating Report Page 1 of 2 Sample Deviations Table 7: Sample Deviations Table Comment Sample Sample Media Date Problem Evaluation / Actions No.
Affected Location AR1 During the performance of REMP-3, it was discovered that air samplers at locations AR1, AQ1, AP1, and AN1 logged power outages on 1/14/23 0753 for a AQ1 duration of two hours and twenty minutes. The cause of these power outages 1
Air Sample 01/19/23 Power Outage was due to a loss of Grant Substation, documented in CR-RBS-2023-00272. All AP1 samplers were operating normally at the time of discovery, and it was verified AN1 that adequate sample volume was obtained to meet required LLDs (CR-RBS-2023-00397)
REMP-17, WO-53021028 and REMP-18, WO-53021026 could not be GQC completed prior to the late date due to insufficient suitable broadleaf vegetation being available for sampling. The late date for these surveillances is 2/25/2023.
GN1 Insufficient Sample frequencies for REMP vegetation is per TRM 3.12.1-1 4c. Deviations 2
Vegetation 02/23/23 Vegetation from required sampling schedule is permitted by TRM Table 3.12.1-1, note a.
GQ1 This deviation will be reported in the Annual Radiological Environmental GR1 Operating Report for 2023 per TRM Table 3.12.1-1, note a. These samples will be performed at the first opportunity when sufficient broadleaf vegetation has grown back. (CR-RBS-2023-01709)
AR1 During the performance of REMP-3 it was discovered that air samplers at AQ1 locations AR1, AQ1, AP1, and AN1 logged a power outage on 3/17/23 at 15:34 3
Air Sample 03/30/23 Power Outage for a duration of 53 minutes. This loss of power was cause by the loss of Grant AP1 Substation, documented in CR-RBS-2023-02735. It was verified that a AN1 sufficient sample volume was obtained to meet required LLDs for the sample period. (CR-RBS-2023-03151)
Plant: River Bend Station Year: 2023 I
Page 27 of 44 Annual Radiological Environmental Operating Report Page 2 of 2 Sample Deviations Table 7: Sample Deviations Table Comment Sample Sample Media Date Problem Evaluation / Actions No.
Affected Location During the performance of REMP-3 on 7/03/23, it was discovered that the filter 4
Air Sample AN1 07/3/23 Hole in sample paper for location AN1 had a hole in it, which will affect sample results. After media further inspection, it appears that this hole was caused by insects burrowing into the paper. (CR-RBS-2023-05588)
During the performance of REMP-3 on 7/3/23, it was noted that the air sampler at location AQS2 logged multiple power outages beginning on 6/19/23 at 1520 and ending on 6/19/23 at 1758. Further investigation showed that electrical 5
Air Sample AQS2 07/3/23 Power Outage work was being performed in the area around that date and time and is the most probable cause for the outages. The sampler was operating normally at the time of the surveillance, and it was verified that an adequate sample volume was obtained to meet the required LLD. (CR-RBS-2023-05595)
GQC On 08/01/23, Quarterly REMP vegetation sample collections (REMP-17 and GN1 Vegetation REMP-19) were performed satisfactorily. However, due to shipping delays the 6
Vegetation 09/12/23 Resample laboratory was unable to meet the required LLD for 1-131. On 9/12/23 a second GQ1 set of vegetation samples was collected and overnight shipped to the laboratory GR1 for analysis. (CR-RBS-2023-07122)
Plant: River Bend Station I Year: 2023 I Page 28 of 44 Annual Radiological Environmental Operating Report Page 1 of 11 Monitoring Results Tables Table 8: Air Particulate Data Table Analysis: Gross Beta Start Date End Date AN1 AP1 AQ1 (Indicator)
(Indicator)
(Indicator)
RE9UIRED LLD +
0.01 0.01 0.01 01/03/2023 01/17/2023 0.018 0.018 0.018 01/17/2023 01/30/2023 0.017(2>
0.015(2) 0.011(2) 01/30/2023 02/13/2023 0.016 0.019 0.016 02/13/2023 02/27/2023 0.015 0.016 0.020 02/27/2023 03/13/2023 0.016 0.018 0.019 03/13/2023 03/28/2023 0.013 0.013 0.020 03/28/2023 04/10/2023 0.015(3) 0.017(3) 0.016(3) 04/10/2023 04/24/2023 0.015 0.014 0.016 04/24/2023 05/08/2023 0.016 0.017 0.016 05/08/2023 05/22/2023 0.018 0.021 0.022 05/22/2023 06/05/2023 0.020 0.014 0.024 06/05/2023 06/19/2023 0.022 0.018 0.019 06/19/2023 07/03/2023 0.006(4) 0.020 0.021 07/03/2023 07/17/2023 0.019 0.017 0.017 07/17/2023 07/31/2023 0.027 0.030 0.027 07/31/2023 08/14/2023 0.019 0.022 0.022 08/14/2023 08/28/2023 0.032 0.027 0.029 08/28/2023 09/11/2023 0.019 0.020 0.025 09/11/2023 09/25/2023 0.041 0.029 0.044 09/25/2023 10/09/2023 0.027 0.024 0.023 10/09/2023 10/23/2023 0.020 0.024 0.020 10/23/2023 11/06/2023 0.024 0.023 0.024 11/06/2023 11/20/2023 0.024 0.025 0.023 11/20/2023 12/04/2023 0.032 0.031 0.033 12/04/2023 12/18/2023 0.021 0.028 0.023 12/18/2023 01/02/2024 0.024 0.014 0.025 (1) Station with highest annual mean.
(2) See Attachment 1, Table 7, Sample Deviations Table, Comment #1 (3) See Attachment 1, Table 7, Sample Deviations Table, Comment #3 (4) See Attachment 1, Table 7, Sample Deviations Table, Comment #4 (5) See Attachment 1, Table 7, Sample Deviations Table, Comment #5 Units: pCi/m3 AQS2 (Indicator) 0.01 0.019 0.018 0.019 0.015 0.014 0.016 0.017 0.015 0.017 0.020 0.028 0.021 0.019(5) 0.019 0.026 0.021 0.026 0.022 0.046 0.023 0.020 0.022 0.017 0.031 0.025 0.024 AR1<1)
(Indicator) 0.01 0.018 0.015(2) 0.019 0.018 0.020 0.016 0.016(3) 0.016 0.020 0.020 0.026 0.022 0.020 0.019 0.027 0.019 0.030 0.026 0.040 0.026 0.026 0.026 0.024 0.029 0.022 0.025 AGC (Control) 0.01 0.015 0.018 0.018 0.017 0.016 0.021 0.015 0.018 0.016 0.022 0.024 0.022 0.014 0.020 0.026 0.021 0.028 0.028 0.042 0.027 0.023 0.027 0.026 0.032 0.024 0.021
Plant: River Bend Station I
Year: 2023 I
Page 29 of 44 Annual Radiological Environmental Operating Report Page 2 of 11 Monitoring Results Tables Table 9: Radioiodine Cartridge Data Table Analysis: 1-131 Start Date End Date AN1 AP1 AQ1 (Indicator)
(Indicator)
(Indicator)
RE9UIRED LLD +
0.07 0.07 0.07 01/03/2023 01/17/2023
< 0.008
< 0.015
< 0.015 01/17/2023 01/30/2023
< 0.020(1)
< 0.009(1)
< 0.020(1) 01/30/2023 02/13/2023
< 0.014
< 0.019
< 0.019 02/13/2023 02/27/2023
< 0.008
< 0.Q17
< 0.018 02/27/2023 03/13/2023
< 0.Q17
< 0.020
< 0.020 03/13/2023 03/28/2023
< 0.008
< 0.016
< 0.016 03/28/2023 04/10/2023
< 0.015(2)
< 0.021(2)
< 0.021(2) 04/10/2023 04/24/2023
< 0.016
< 0.016
< 0.011 04/24/2023 05/08/2023
< 0.009
< 0.008
< 0.019 05/08/2023 05/22/2023
< 0.016
< 0.023
< 0.023 05/22/2023 06/05/2023
< 0.010
< 0.024
< 0.024 06/05/2023 06/19/2023
< 0.008
< 0.025
< 0.022 06/19/2023 07/03/2023
< 0.008(3)
< 0.019
< 0.021 07/03/2023 07/17/2023
< 0.010
< 0.023
< 0.023 07/17/2023 07/31/2023
< 0.008
< 0.016
< 0.015 07/31/2023 08/14/2023
< 0.013
< 0.017
< 0.017 08/14/2023 08/28/2023
< 0.021
< 0.017
< 0.017 08/28/2023 09/11/2023
< 0.006
< 0.017
< 0.017 09/11/2023 09/25/2023
< 0.009
< 0.009
< 0.018 09/25/2023 10/09/2023
< 0.020
< 0.025
< 0.010 10/09/2023 10/23/2023
< 0.008
< 0.019
< 0.019 10/23/2023 11/06/2023
< 0.011
< 0.020
< 0.020 11/06/2023 11/20/2023
< 0.009
< 0.019
< 0.019 11/20/2023 12/04/2023
< 0.017
< 0.007
< 0.017 12/04/2023 12/18/2023
< 0.012
< 0.016
< 0.016 12/18/2023 01/02/2024
< 0.013
< 0.018
< 0.018 (1) See Attachment 1, Table 7, Sample Deviations Table, Comment #1 (2) See Attachment 1, Table 7, Sample Deviations Table, Comment #3 (3) See Attachment 1, Table 7, Sample Deviations Table, Comment #4 (4> See Attachment 1, Table 7, Sample Deviations Table, Comment #5 Units: pCi/m3 AQS2 (Indicator) 0.07
< 0.014
< 0.020
< 0.019
< 0.018
< 0.018
< 0.007
< 0.021
< 0.017
< 0.019
< 0.024
< 0.025
< 0.026
< 0.021(4)
< 0.023
< 0.016
< 0.017
< 0.013
< 0.017
< 0.018
< 0.026
< 0.019
< 0.020
< 0.019
< 0.017
< 0.016
< 0.018 AR1 (Indicator) 0.07
< 0.016
< 0.022(1)
< 0.008
< 0.008
< 0.020
< 0.016
< 0.021(2)
< 0.016
< 0.019
< 0.023
< 0.024
< 0.009
< 0.022
< 0.023
< 0.016
< 0.008
< 0.017
< 0.017
< 0.018
< 0.025
< 0.019
< 0.020
< 0.019
< 0.017
< 0.016
< 0.018 AGC (Control) 0.07
< 0.007
< 0.008
< 0.019
< 0.018
< 0.009
< 0.016
< 0.009
< 0.009
< 0.020
< 0.010
< 0.014
< 0.026
< 0.008
< 0.008
< 0.012
< 0.017
< 0.017
< 0.008
< 0.019
< 0.028
< 0.010
< 0.009
< 0.008
< 0.009
< 0.008
< 0.008
Plant: River Bend Station I
Year: 2023 I Page 30 of 44 Annual Radiological Environmental Operating Report Page 3 of 11 Monitoring Results Tables Table 10: Thermoluminescent Dosimeters - Indicators Analysis: Gamma Dose Units: mrem/Std. Qtr.
Station 1st Qtr 2nd Qtr 3rd Qtr 4th Qtr Annual Mean 2023 2023 2023 2023 2023 TA1 10.7 10.5 10.4 11.5 10.8 TB1 15.3 14.8 15.0 16.1 15.3 TC1 15.4 14.6 15.3 16.7 15.5 TD1 14.8 15.2 16.0 17.2 15.8 TE1 13.6 14.2 16.8 15.3 15.0 TF1 13.5 14.0 14.8 15.3 14.4 TG1<1>
15.8 16.2 17.2 17.6 16.7 TH1 12.2 12.7 13.1 13.5 12.9 TJ1 12.7 13.4 14.0 14.7 13.7 TK1 14.0 14.4 14.4 15.6 14.6 TL 1 14.1 14.2 15.6 16.2 15.0 TM1 11.7 11.8 12.1 13.1 12.2 TN1 14.2 14.0 15.0 15.0 14.6 TP1 13.0 13.2 13.2 14.5 13.5 TQ1 10.5 10.3 12.1 12.7 11.4 TR1 10.6 10.5 10.7 11.2 10.8
<1> Indicator station with highest annual mean.
Plant: River Bend Station I
Year:2023 I Page 31 of 44 Annual Radiological Environmental Operating Report Page 4 of 11 Monitoring Results Tables Table 11: Thermoluminescent Dosimeters - Special Interest Areas Analysis: Gamma Dose Units: mrem/Std. Qtr.
Station 1st Qtr 2nd Qtr 3rd Qtr 4th Qtr Annual Mean 2023 2023 2023 2023 2023 TCS 12.3 12.2 12.9 12.9 12.6 TGS 13.7 15.3 15.5 16.1 15.2 TNS 13.3 13.1 14.1 15.1 13.9 TRS 14.1 14.4 15.5 15.2 14.8 TQS1(1) 14.7 15.2 16.7 17.3 16.0 TQS2 12.5 12.6 12.7 14.3 13.0 (1) Special interest station with highest annual mean.
Table 12: Thermoluminescent Dosimeters - Control Analysis: Gamma Dose Units: mrem/Std. Qtr.
Station 1st Qtr 2nd Qtr 3rd Qtr 4th Qtr Annual Mean 2023 2023 2023 2023 2023 TAc<1) 14.1 15.4 16.4 16.9 15.7 TEC 13.5 14.4 14.8 16.2 14.7 (1) Control station with highest annual mean.
Plant: River Bend Station Annual Radiological Environmental Operating Report Monitoring Results Tables Table 13: Surface Water - Gamma Analysis: Gamma Isotopic Location Start Date End Date Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 1-131 Zr-95 REQUIRED LLD ~
15 15 30 15 30 15 15 30 SWD 02/21/2023 02/21/2023
< 5.83
< 5.60
< 11.9
< 5.71
< 11.5
< 6.97
< 9.89
< 7.76 (Indicator) swu 02/21/2023 02/21/2023
< 6.44
< 6.18
< 9.61
< 6.61
< 13.5
< 7.20
< 8.73
< 10.0 (Control)
SWD 05/25/2023 05/25/2023
< 7.26
< 8.53
< 13.9
< 9.07
< 10.7
< 6.51
< 14.8
< 12.5 (Indicator) swu 05/25/2023 05/25/2023
< 9.44
< 8.31
< 16.9
< 11.3
< 13.9
< 8.65
< 12.8
< 13.0 (Control)
SWD 08/14/2023 08/14/2023
< 1.17
< 1.34
< 3.21
< 1.50
< 2.80
< 1.44
< 5.54
< 2.54 (Indicator) swu 08/14/2023 08/14/2023
< 1.59
< 1.80
< 3.54
< 1.80
< 3.00
< 1.73
< 6.31
< 3.19 (Control)
SWD 11/07/2023 11/07/2023
< 7.63
< 6.44
< 11.8
< 8.65
< 15.0
< 6.61
< 9.85
< 10.9 (Indicator) swu 11/07/2023 11/07/2023
< 10.6
< 7.63
< 18.6
< 5.97
< 24.5
< 8.46
< 10.3
< 14.0 (Control)
Year:2023 Page 32 of 44 Page 5 of 11 Units: pCi/L Cs-134 Cs-137 Ba-140 La-140 15 18 60 15
< 6.33
< 5.14
< 30.7
< 13.8
< 6.30
< 6.15
< 31.7
< 12.9
< 7.44
< 7.01
< 42.0
< 13.7
< 6.16
< 8.87
< 42.5
< 14.0
< 1.30
< 1.23
< 10.5
< 3.65
< 1.61
< 1.67
< 13.0
< 4.66
< 8.23
< 9.09
< 26.3
< 10.6
< 9.15
< 10.12
< 33.8
< 5.80
Plant: River Bend Station I
Year: 2023 I
Page 33 of 44 Annual Radiological Environmental Operating Report Page 6 of 11 Monitoring Results Tables Table 14: Surface Water - Tritium Analysis: H-3 Units: pCi/L Location Start Date End Date H-3 REQUIRED LLD +
2000 SWD (Indicator) 02/21/2023 02/21/2023
< 525 SWU (Control) 02/21/2023 02/21/2023
< 519 SWD (Indicator) 05/25/2023 05/25/2023
< 497 SWU (Control) 05/25/2023 05/25/2023
< 504 SWD (Indicator) 08/14/2023 08/14/2023
< 590 SWU (Control) 08/14/2023 08/14/2023
< 585 SWD (Indicator) 11/07/2023 11/07/2023
< 509 SWU (Control) 11/07/2023 11/07/2023
< 520
Plant: River Bend Station Year: 2023 Page 34 of 44 Annual Radiological Environmental Operating Report Page 7 of 11 Monitoring Results Tables Table 15: Groundwater - Gamma Analysis: Gamma Isotopic Units: pCi/L Location Collection Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 1-131 Zr-95 Cs-134 Cs-137 Ba-140 La-140 Date REQUIRED LLD +
15 15 30 15 30 15 15 30 15 18 60 15 WD (Indicator) 04/05/2023
< 6.45
< 5.99
< 14.0
< 7.90
< 11.6
< 6.46
< 9.12
< 12.2
< 7.25
< 5.33
< 23.0
< 7.96 WU (Control) 04/05/2023
< 5.07
< 6.71
< 16.7
< 8.26
< 14.1
< 7.97
< 12.2
< 9.15
< 8.15
< 6.14
< 30.7
< 10.4 WD (Indicator) 10/09/2023
< 5.42
< 5.17
< 9.78
< 5.87
< 13.8
< 7.33
< 7.48
< 8.46
< 5.85
< 5.74
< 24.2
< 7.64 WU (Control) 10/09/2023
< 3.53
< 4.65
< 8.57
< 4.25
< 9.34
< 4.89
< 6.07
< 7.09
< 4.51
< 4.16
< 17.9
< 5.62
Plant: River Bend Station I
Year: 2023 I
Page 35 of 44 Annual Radiological Environmental Operating Report Page 8 of 11 Monitoring Results Tables Table 16: Groundwater-Tritium Analysis: H-3 Units: pCi/L Location Start Date End Date H-3 REQUIRED LLD +
2000 WD (Indicator) 04/05/2023 04/05/2023
< 326 WU (Control) 04/05/2023 04/05/2023
< 510 WD (Indicator) 10/09/2023 10/09/2023
< 540 WU (Control) 10/09/2023 10/09/2023
< 544
Plant: River Bend Station I
Year: 2023 I Page 36 of 44 Annual Radiological Environmental Operating Report Page 9 of 11 Monitoring Results Tables Table 17: Sediment - Gamma Analysis: Gamma Isotopic Units: pCi/kg (dry)
Location I Collection Date Cs-134 Cs-137 REQUIRED LLD +
150 180 SEDD (Indicator) I 08/14/2023
< 85.45
< 71.21 SEDU (Control)
I 08/14/2023
< 99.39
< 72.20
Plant: River Bend Station I
Year: 2023 I
Page 37 of 44 Annual Radiological Environmental Operating Report Page 10 of 11 Monitoring Results Tables Table 18: Fish - Gamma Analysis: Gamma Isotopic Units: pCi/kg (wet)
Location Collection Mn-54 Co-58 Fe-59 Co-60 Zn-65 Cs-134 Cs-137 Date REQUIRED LLD.+
130 130 260 130 260 130 150 FD 09/26/2023
< 59.28
< 44.65
< 87.16
< 66.35
< 122.9
< 46.97
< 41.52 (Indicator)
FU 09/26/2023
< 60.54
< 66.22
< 124.7
< 68.70
< 134.2
< 56.13
< 48.16 (Control)
Plant: River Bend Station I
Year: 2023 I Page 38 of 44 Annual Radiological Environmental Operating Report Page 11 of 11 Monitoring Results Tables Table 19: Food Products - Gamma Analysis: Gamma Isotopic I
Units: pCi/kg (wet)
Location Collection Date 1-131 RE9UIRED LLD +
60 GN1 (Indicator) 03/13/2023(1)
< 13.97 GQ1 (Indicator) 3/13/2023(1)
< 20.20 GR 1 (Indicator) 3/14/2023<1)
< 19.13 GQC (Control) 03/14/2023(1)
< 13.12 GN1 (Indicator) 05/31/2023
< 53.46 GQ1 (Indicator) 05/31/2023
< 56.62 GR1 (Indicator) 05/31/2023
< 46.70 GQC (Control) 05/31/2023
< 46.61 GN1 (Indicator) 08/1 /2023(2)
< 115.2 GQ1 (Indicator) 08/1/2023 <2)
< 110.1 GR1 (Indicator) 08/1 /2023(2)
< 102.8 GQC (Control) 08/1/2023<2)
< 95.75 GN1 (Indicator) 09/12/2023(2)
< 34.08 GQ1 (Indicator) 09/12/2023(2)
< 34.64 GR1 (Indicator) 09/12/2023(2)
< 40.34 GQC (Control) 09/12/2023(2)
< 27.89 GN1 (Indicator) 11/07/2023
< 22.43 GQ1 (Indicator) 11/07/2023
< 23.02 GR1 (Indicator) 11/07/2023
< 20.85 GQC (Control) 11/07/2023
< 22.22 (1) See Attachment 1, Table 7, Sample Deviations Table, Comment #2 (2) See Attachment 1, Table 7, Sample Deviations Table, Comment #6 Cs-134 60
< 15.34
< 19.14
< 21.03
< 12.09
< 37.77
< 33.40
< 24.34
< 34.54
< 9.068
< 9.115
< 9.006
< 7.086
< 35.84
< 31.21
< 43.60
< 32.30
< 25.51
< 26.89
< 24.05
< 26.16 Cs-137 80
< 13.76
< 18.31
< 21.02
< 13.13
< 36.08
< 27.39
< 25.52
< 30.39
< 8.212
< 8.169
< 7.960
< 7.116
< 39.79
< 34.20
< 41.71
< 27.79
< 26.78
< 29.03
< 23.07
< 26.14
Plant: River Bend Station Year: 2023 I Page 39 of 44 Annual Radiological Environmental Operating Report Page 1 of 6 lnterlaboratory Comparison Program Results 1.0 Summary For the Teledyne Brown Engineering (TBE) laboratory, 124 out of 131 analyses performed met the specified acceptance criteria. Seven analyses did not meet the specified acceptance criteria for the following reasons and were addressed through the TBE Corrective Action Program. A summary is found below.
Note: The Department of Energy (DOE) Mixed Analyte Performance Evaluation Program (MAPEP) samples are created to mimic conditions found at DOE sites which do not resemble typical environmental samples obtained at commercial nuclear power facilities.
- 1.
The MAPEP February 2023 Soil Ni-63 result was evaluated as Not Acceptable. TBE's reported value was 294 Bq/kg and the known result was 1130 Bq/kg (range 791 - 1469).
The sample was reprepped by a different (senior) lab technician with results of 1120 &
1250 Bq. It was determined that there was a difference between the two techs during the sample prep (technique) and the procedure was revised to reflect these differences including using a specific aliquot amount. (NCR 23-08)
- 2.
The MAPEP February 2023 vegetation Sr-90 result was evaluated as Not Acceptable.
The reported value was 0.05 Bq (not detected) and the known result was a "false positive".
This was considered to be a statistical failure because TBE's reported result with 3 times the uncertainty resulted in a slightly positive net result (0.03194 Bq/kg). The reported result was significantly below TBE's average detection limit for vegetation samples.
(NCR 23-09)
- 3.
The ERA RAD April 2023 water Ba-133 result was evaluated as Not Acceptable. The reported value was 26.0 pCi/L and the known was 22.3 (acceptance range 17.1 - 25.8 pCi) or 117% of the known (acceptable for TBE QC). The sample was used as the workgroup duplicate with a result of 25.4 (114%). The sample had also been counted on a different detector with a result of 21.9 (98% ). The was TB E's first failure for Ba-133.
(NCR 23-10)
- 4.
The MAPEP August 2023 soil Fe-55 result was evaluated as Not Acceptable. The reported value was 346 Bq/kg and the known result was 1280 (acceptance range of 896-1664 Bq/kg). This was TBE's initial evaluation for Fe-55 in soils. The result was received at the end of December and the root cause in under investigation. No client samples were associated with this cross-check. (CAR 23-31)
- 5.
The Analytics September 2023 milk Sr-90 result was evaluated as Not Acceptable. The reported result was 7.28 pCi/L and the known result was 12.8 (57% of known). This sample was used as the workgroup duplicate and the carrier yields for both samples were 107% and 75%. The LCS recovery for the workgroup was at 106%. The ERA drinking water Sr-90 cross check that was analyzed around the same time was acceptable at 108%. There was no explanation for the failure. This is the first low biased failure for Sr-90 milk. The last failure (high) was in 2016. (NCR 23-24)
- 6.
The ERA RAD October 2023 water Gross Alpha result was evaluated as Not Acceptable.
The reported result was 53.2 pCi/L and the known result was 70.6 (acceptable range of 54.0 - 87.2 pCi/L). The reported result was the workgroup duplicate and was within 75%
of the known value (within TBE QC range). The original result was 63.3 pCi/L (90% of the known). Because the LCS result was biased slightly high, the decision was made to report the lower value. (NCR 23-20)
Plant: River Bend Station I
Year:2023 I Page 40 of 44 Annual Radiological Environmental Operating Report Page 2 of 6 lnterlaboratory Comparison Program Results
- 7.
The ERA RAD October 2023 water 1-131 result was evaluated as Not Acceptable. The reported value was 23.5 pCi/L and the known result was 29.7 (acceptable range of 25.8 -
33.6) The reported result was 79% of the known, which is within the acceptable TBE QC range. The workgroup was reviewed with no anomalies found. The LCS/LCSD results were 109% and 86.1 %. The sample was not processed in a timely manner as per the ERA instructions which stated to analyze shortly after receipt due to the short half-life.
Going forward, the QA &/or Lab Mgr. will ensure that this analysis is started sooner.
(NCR 23-21)
The Inter-Laboratory Comparison Program provides evidence of "in control" counting systems and methods, and that the laboratories are producing accurate and reliable data.
Plant: River Bend Station I
Year: 2023 I
Page 41 of 44 Annual Radiological Environmental Operating Report Page 3 of 6 Table 20: Analytics Environmental Radioactivity Cross Check Program Teledlne Brown Engineering Environmental Services Identification TBE Known Ratio of TSE to MonthNear Number Matrix Nuclide Units Reported Value (a)
Analytics Result Evaluation (bl Value March 2023 E13826 Milk Sr-89 pCi/L 70.5 93.1 0.76 w
Sr-90 pCi/L 12.3 14.7 0.84 A
E13827 Milk Ce-141 pCi/L 127 139 0.91 A
Co-58 pCi/L 119 131 0.91 A
Co-60 pCi/L 250 279 0.90 A
Cr-51 pCi/L 246 302 0.82 A
Cs-134 pCi/L 172 200 0.86 A
Cs-137 pCi/L 125 140 0.89 A
Fe-59 pCi/L 122 122 1.00 A
1-131 pCi/L 70.2 82.0 0.86 A
Mn-54 pCi/L 165 180 0.92 A
Zn-65 pCi/L 306 306 1.00 A
E13828 Charcoal 1-131 pCi 79.0 89.9 0.88 A
E13829 AP Ce-141 pCi 91.9 87.8 1.05 A
Co-58 pCi 87.5 82.5 1.06 A
Co-60 pCi 199 176 1.13 A
Cr-51 pCi 218 191 1.14 A
Cs-134 pCi 119 126 0.94 A
Cs-137 pCi 92.4 88.7 1.04 A
Fe-59 pCi 95.5 76.9 1.24 w
Mn-54 pCi 120 113 1.06 A
Zn-65 pCi 179 193 0.93 A
E13830 Soil Ce-141 pCi/g 0.224 0.220 1.02 A
Co-58 pCi/g 0.193 0.207 0.93 A
Co-60 pCi/g 0.406 0.441 0.92 A
Cr-51 pCi/g 0.464 0.477 0.97 A
Cs-134 pCi/g 0.334 0.316 1.06 A
Cs-137 pCi/g 0.270 0.288 0.94 A
Fe-59 pCi/g 0.183 0.193 0.95 A
Mn-54 pCi/g 0.263 0.284 0.93 A
Zn-65 pCi/g 0.475 0.484 0.98 A
E13831 AP Sr-89 pCi 99.4 90.8 1.09 A
Sr-90 pCi 14.6 14.3 1.02 A
(a) The Analytics known value is equal to 100% of the parameter present in the standard as determined by gravimetric and/or volumetric measurements made during standard preparation
{b) Analytics evaluation based on TBE internal QC limits:
A= Acceptable - reported result falls within ratio limits of 0.80-1.20 W = Acceptable with warning - reported result falls within 0. 70-0.80 or 1.20-1.30 N = Not Acceptable - reported result falls outside the ratio limits of< 0. 70 and > 1. 30 (Page 1 of 4)
Plant: River Bend Station I
Year: 2023 I
Page 42 of 44 Annual Radiological Environmental Operating Report Page 4 of 6 Table 20: Analytics Environmental Radioactivity Cross Check Program Teledine Brown Engineering Environmental Services Identification TBE Known Ratio of TBE to MonthNear Number Matrix Nuclide Units Reported Value (a)
Analytics Result Evaluation (bl Value September 2023 E13832 Milk Sr-89 pCi/L 49.8 71.4 0.70 w
Sr-90 pCi/L 7.28 12.8 0.57 Nc1>
E13833 Milk Ce-141 pCi/L 93.4 104 0.90 A
Co-58 pCi/L 58.2 65.8 0.88 A
Co-60 pCi/L 190 223 0.85 A
Cr-51 pCi/L 207 205 1.01 A
Cs-134 pCi/L 96.0 114 0.84 A
Cs-137 pCi/L 121 141 0.86 A
Fe-59 pCi/L 78.8 78.8 1.00 A
1-131 pCi/L 27.9 37.4 0.75 w
Mn-54 pCi/L 128 146 0.88 A
Zn-65 pCi/L 185 203 0.91 A
E13834 Charcoal 1-131 pCi 76.9 78.7 0.98 A
E13835 AP Ce-141 pCi 91.9 87.1 1.05 A
Co-58 pCi 58.7 55.2 1.06 A
Co-60 pCi 200 187 1.07 A
Cr-51 pCi 192 172 1.12 A
Cs-134 pCi 89.6 96 0.94 A
Cs-137 pCi 109 119 0.92 A
Fe-59 pCi 68.3 66.1 1.03 A
Mn-54 pCi 129 123 1.05 A
Zn-65 pCi 163 171 0.96 A
E13836 Soil Ce-141 pCi/g 0.228 0.184 1.24 w
Co-58 pCi/g 0.103 0.116 0.89 A
Co-60 pCi/g 0.364 0.394 0.92 A
Cr-51 pCi/g 0.371 0.362 1.02 A
Cs-134 pCi/g 0.176 0.202 0.87 A
Cs-137 pCi/g 0.285 0.315 0.90 A
Fe-59 pCi/g 0.140 0.139 1.00 A
Mn-54 pCi/g 0.237 0.259 0.92 A
Zn-65 pCi/g 0.349 0.359 0.97 A
E13837 AP Sr-89 pCi 74.6 80.2 0.93 A
Sr-90 pCi 13.9 14.4 0.96 A
(a) The Analytics known value is equal to 100% of the parameter present in the standara as determined by gravimetric and/or volumetric measurements made during standard preparation (b) Analytics evaluation based on TBE internal QC limits:
A = Acceptable - reported result falls within ratio limits of 0. 80-1. 20 W = Acceptable with warning - reported result falls within 0. 70-0.80 or 1.20-1.30 N = Not Acceptable - reported result falls outside the ratio limits of < 0. 70 and > 1. 30 (1) ~ee NCR 23-24 (Page 2 of4)
Plant: River Bend Station I
Year: 2023 I
Page 43 of 44 Annual Radiological Environmental Operating Report Page 5 of 6 Table 21: DOE's Mixed Analyte Performance Evaluation Program (MAPEP)
Teledine Brown EnsineerinS Environmental Services Identification TBE Known Acceptance Month/Year Number Matrix Nuclide Units Reported Value (a)
Range Evaluation (b)
Value February 2023 23-MaS48 Soil Ni-63 Sq/kg 294 1130 791 - 1469 N<3>
23-MaSU48 Urine Cs-134 Sq/L 9.92 10 6.7-12.4 A
Cs-137 Sq/L 0.0994 (1)
A Co-57 Sq/L 9.35 8.67 6.07 - 11.27 A
Co-60 Sq/L 9.03 8.13 5.69 - 10.57 A
Mn-54 Sq/L 11.80 10.0 7.0 - 13.0 A
U-234 Sq/L 0.01 Not spiked U-238 Sq/L 0.01 Not spiked Zn-65 Sq/L 10.60 9.29 6.50 - 12.08 A
23-MaW48 Water Ni-63 Sq/L 23.1 27.3 19.1-35.5 A
23-RdV48 Vegetation Cs-134 Sq/sample 5.6 7.6 5.32 - 9.88 w
Cs-137 Sq/sample 0.03 (1)
A Co-57 Sq/sample 5.9 6.9 4.85 - 9.01 A
Co-60 Sq/sample 5.00 6.51 4.56 - 8.46 w
Mn-54 Sq/sample 6.08 8.03 5.62 - 10.44 w
Sr-90 Sq/sample 0.05 (1)
N(4)
Zn-65 Sq/sample 5.49 7.43 5.20- 9.66 w
August 2023 23-MaS49 Soil Fe-55 Sq/kg 346 1280 896 - 1664 N(s>
Ni-63 Sq/kg 1260 1370 959 - 1781 A
23-MaW49 Water Ni-63 Sq/L 1.0 1
(2)
A 23-RdV49 Vegetation Cs-134 Sq/sample 3.860 4.98 3.49 - 6.47 w
Cs-137 Sq/sample 0.027 (1)
A Co-57 Sq/sample 3.88 4.24 2.97 - 5.51 A
Co-60 Sq/sample 2.37 2.79 1.95 - 3.63 A
Mn-54 Sq/sample 2.04 2.56 1.79 - 3.33 w
Sr-90 Sq/sample 0.96 1.17 0.82 - 1.52 A
Zn-65 Sq/sample
-0.514 (1)
A (a) The MAPEP known value is equal to 100% of the parameter present in the standard as determined by gravimetric and/or volumetric measurements made during standard preparation (b) DOEIMAPEP evaluation:
A= Acceptable - reported result falls within ratio limits of 0.80-1.20 W = Acceptable with warning - reported result falls within 0. 70-0.80 or 1.20-1.30 N = Not Acceptable - reported result falls outside the ratio limits of < 0. 70 and > 1. 30 (1) False positive test (2) Sensitivity evaluation (3) See NCR 23-08 (4) See NCR 23-09 (5) Initial evaluation - See CAR 23-31 (Page 3 of 4)
Plant: River Bend Station I
Year: 2023 I
Page 44 of 44 Annual Radiological Environmental Operating Report Page 6 of 6 Table 22: ERA Environmental Radioactivity Cross Check Program Teledyne Brown Engineering Environmental Services Identification TBE Reported Known Acceptance Evaluation (bl Month/Year Number Matrix Nuclide Units Value Value<a>
Limits March 2023 MRAD-38 Water Am-241 pCi/L
- 28. 1 32.1 22.0 -41.0 A
Fe-55 pCi/L 118 1380 811-2010 A
Pu-238 pCi/L 65.6 70.7 42.5 - 91.6 A
Pu-239 pCi/L 82.9 92.4 57.2-114 A
Soil Sr-90 pCi/kg 2630 2580 803-4020 A
AP GR-A pCi/filter 69.6 76.8 40.1 - 127 A
GR-B pCi/filter 36.8 32.8 19.9 - 49.6 A
April 2023 RAD-133 Water Ba-133 pCi/L 26.0 22.3 17.1-25.8 N(1>
Cs-134 pCi/L 72.1 77.6 63.4 - 85.4 A
Cs-137 pCi/L 62.1 63.1 56.8-72.2 A
Co-60 pCi/L 32.6 30.3 26.7 - 36.1 A
Zn-65 pCi/L 253 242 218 - 283 A
GR-A pCi/L 34.2 29.2 14.9 - 38.2 A
GR-B pCi/L 64.3 60.7 41.8 - 67.4 A
U-Nat pCi/L 61.75 62.7 51.2 - 69.0 A
H-3 pCi/L 13,300 12700 11,100 - 14,000 A
Sr-89 pCi/L 67.0 61.1 49.2-69.0 A
Sr-90 pCi/L 36.5 36.0 26.4-41.5 A
1-131 pCi/L 24.3 28.7 23.9 - 33.6 A
September 2023 MRAD-39 Water Am-241 pCi/L 54.0 71.0 48.7 - 90.8 A
Fe-55 pCi/L 2430 2630 1550 - 3830 A
Pu-238 pCi/L 172 177 106 - 229 A
Pu-239 pCi/L 171 182 113 - 224 A
Soil Sr-90 pCi/kg 9580 6800 2120 - 10,600 A
AP GR-A pCi/filter 82.2 79.8 41.7-131 A
GR-B pCi/filter 54.3 42.6 25.8 - 64.4 A
October 2023 RAD-135 Water Ba-133 pCi/L 86.3 92.2 73.8 - 111 A
Cs-134 pCi/L 38.4 41.2 27.9 - 54.5 A
Cs-137 pCi/L 194 199 161 - 237 A
Co-60 pCi/L 49.5 47.8 33.8 - 61.8 A
Zn-65 pCi/L 59.7 57.0 23.7 - 90.3 A
GR-A pCi/L 53.2 70.6 54.0 - 87.2 N(2>
GR-B pCi/L 46.9 42.2 30.5 - 53.9 A
U-Nat pCi/L 51.26 51.7 45.9-57.5 A
H-3 pCi/L 20,100 22,900 19,700 - 26,100 A
Sr-89 pCi/L 51.1 38.2 25.2 - 51.2 A
Sr-90 pCi/L 31.7 35.7 30.3-41.1 A
1-131 pCi/L 23.5 29.7 25.8 - 33.6 N(3)
(a) The ERA known value is equal to 100% of the parameter present in the standard as determined by gravimetric and/or volumetric measurements made during standard preparation.
(b) ERA evaluation:
A = Acceptable - Reported value falls within the Acceptance Limits N = Not Acceptable - Reported value falls outside of the Acceptance Limits (1) See NCR 23-10 (2) See NCR 23-20 (3) See NCR 23-21 (Page 4 of 4)