|
---|
Category:Environmental Monitoring Report
MONTHYEARNG-24-0004, 2023 Annual Radiological Environmental Operating Report2024-05-0808 May 2024 2023 Annual Radiological Environmental Operating Report NG-24-0003, Submittal of 2023 Annual Radioactive Material Release Report2024-04-24024 April 2024 Submittal of 2023 Annual Radioactive Material Release Report NG-23-0004, 2022 Annual Radioactive Material Release Report2023-04-25025 April 2023 2022 Annual Radioactive Material Release Report NG-22-0053, 2021 Annual Radiological Environmental Operating Report2022-05-0606 May 2022 2021 Annual Radiological Environmental Operating Report NG-22-0049, 2021 Annual Radioactive Material Release Report2022-04-26026 April 2022 2021 Annual Radioactive Material Release Report NG-21-0011, Submittal of 2020 Annual Radiological Environmental Operating Report2021-05-0404 May 2021 Submittal of 2020 Annual Radiological Environmental Operating Report NG-20-0038, 2019 Annual Radiological Environmental Operating Report2020-05-14014 May 2020 2019 Annual Radiological Environmental Operating Report NG-20-0037, Correction to the 2018 Annual Radiological Environmental Operating Report2020-05-0707 May 2020 Correction to the 2018 Annual Radiological Environmental Operating Report NG-20-0032, 2019 Annual Radioactive Material Release Report2020-04-28028 April 2020 2019 Annual Radioactive Material Release Report NG-19-0044, Submittal of 2018 Annual Radioactive Material Release Report2019-04-25025 April 2019 Submittal of 2018 Annual Radioactive Material Release Report NG-17-0106, Correction to the 2011 and 2016 Annual Radioactive Material Release Reports2017-12-20020 December 2017 Correction to the 2011 and 2016 Annual Radioactive Material Release Reports ML17118A2462017-04-28028 April 2017 Offsite Dose Assessment Manual (Odam), Revision 37 ML17118A2452017-04-24024 April 2017 Annual Radioactive Material Release Report NG-17-0092, Duane Arnold, 2016 Annual Radioactive Material Release Report2017-04-24024 April 2017 Duane Arnold, 2016 Annual Radioactive Material Release Report NG-16-0110, Duane Arnold - Annual Radiological Environmental Operating Report January 1 to December 31, 20152016-05-12012 May 2016 Duane Arnold - Annual Radiological Environmental Operating Report January 1 to December 31, 2015 NG-16-0110, Radiological Environmental Monitoring Program, Annual Report - Part II Data Tabulations and Analyses for the Year 20152016-05-12012 May 2016 Radiological Environmental Monitoring Program, Annual Report - Part II Data Tabulations and Analyses for the Year 2015 ML16138A1732016-05-12012 May 2016 Annual Radiological Environmental Operating Report January 1 to December 31, 2015 NG-16-0105, Annual Radioactive Material Release Report for 20152016-04-29029 April 2016 Annual Radioactive Material Release Report for 2015 NG-15-0135, 2014 Annual Radiological Environmental Operating Report2015-05-14014 May 2015 2014 Annual Radiological Environmental Operating Report NG-15-0121, 2014 Annual Radioactive Material Release Report2015-04-30030 April 2015 2014 Annual Radioactive Material Release Report ML14136A2872014-05-12012 May 2014 2013 Annual Radiological Environmental Operating Report NG-14-0116, 2013 Annual Radioactive Material Release Report2014-04-30030 April 2014 2013 Annual Radioactive Material Release Report NG-13-0173, Submittal of 2012 Annual Radiological Environmental Operating Report2013-05-13013 May 2013 Submittal of 2012 Annual Radiological Environmental Operating Report NG-12-0214, Annual Radiological Environmental Operating Report2012-05-14014 May 2012 Annual Radiological Environmental Operating Report NG-12-0191, NextEra Energy Duane Arnold - 2011 Annual Radioactive Material Release Report2012-04-27027 April 2012 NextEra Energy Duane Arnold - 2011 Annual Radioactive Material Release Report ML11140A0762011-05-0505 May 2011 Annual Radiological Environmental Operating Report NG-11-0133, Submittal of 2010 Annual Radioactive Material Release Report2011-04-29029 April 2011 Submittal of 2010 Annual Radioactive Material Release Report NG-10-0376, Revision to Annual Radioactive Material Release Report2010-07-23023 July 2010 Revision to Annual Radioactive Material Release Report ML1012704812009-04-27027 April 2009 Annual Radiological Environmental Operating Report NG-10-0265, Duane Arnold, 2009 Annual Radiological Material Release Report2009-04-27027 April 2009 Duane Arnold, 2009 Annual Radiological Material Release Report ML1012704792009-04-27027 April 2009 Duane Arnold, 2009 Annual Radiological Material Release Report NG-09-0308, 2008 Annual Radiological Environmental Operating Report2009-04-23023 April 2009 2008 Annual Radiological Environmental Operating Report NG-09-0308, Duane Arnold - 2008 Annual Radiological Environmental Operating Report2009-04-23023 April 2009 Duane Arnold - 2008 Annual Radiological Environmental Operating Report ML0913106622009-04-22022 April 2009 Duane Arnold - 2008 Annual Radiological Material Release Report NG-09-0308, Duane Arnold - 2008 Annual Radiological Material Release Report2009-04-22022 April 2009 Duane Arnold - 2008 Annual Radiological Material Release Report NG-08-0345, Duane Arnold Energy Center 2007 Annual Radiological Environmental Operating Report2008-04-24024 April 2008 Duane Arnold Energy Center 2007 Annual Radiological Environmental Operating Report ML0812803492008-04-24024 April 2008 2007 Annual Radiological Environmental Operating Report ML0812803512008-04-24024 April 2008 2007 Annual Radiological Material Release Report ML0921505012008-01-0101 January 2008 DAEC Lr - Idnr Iowa Ambient Air Monitoring Annual Report: 2008 Air Quality Bureau ML0712901262006-12-31031 December 2006 Annual Radiological Environmental Operating Report for 2006 ML0712901282006-12-31031 December 2006 Radiological Environmental Monitoring Program, Annual Report - Part II: Data Tabulations & Analyses, January-December 2006 NG-06-0354, 2005 Annual Radiological Environmental Operating Report2006-04-28028 April 2006 2005 Annual Radiological Environmental Operating Report NG-06-0353, Annual Radioactive Material Release Report2006-04-28028 April 2006 Annual Radioactive Material Release Report NG-05-0483, 10 CFR 50.46 Annual Report of Changes in Peak Cladding Temperature2005-09-21021 September 2005 10 CFR 50.46 Annual Report of Changes in Peak Cladding Temperature NG-05-0263, 2004 Annual Radioactive Material Release Report2005-04-29029 April 2005 2004 Annual Radioactive Material Release Report ML0513103682004-12-31031 December 2004 Annual Report Radiation Environmental Monitoring Program January 1 to December 31, 2004 NG-04-0323, Annual Radiological Environmental Operating Report2004-04-30030 April 2004 Annual Radiological Environmental Operating Report NG-04-0324, 2003 Annual Radioactive Material Release Report2004-04-30030 April 2004 2003 Annual Radioactive Material Release Report NG-03-0333, 2002 Annual Radioactive Environmental Monitoring Report2003-04-30030 April 2003 2002 Annual Radioactive Environmental Monitoring Report NG-02-0364, License DPR-49, 2001 Annual Radiological Environmental Report2002-04-26026 April 2002 License DPR-49, 2001 Annual Radiological Environmental Report 2024-05-08
[Table view] Category:Letter type:NG
MONTHYEARNG-24-0004, 2023 Annual Radiological Environmental Operating Report2024-05-0808 May 2024 2023 Annual Radiological Environmental Operating Report NG-24-0003, Submittal of 2023 Annual Radioactive Material Release Report2024-04-24024 April 2024 Submittal of 2023 Annual Radioactive Material Release Report NG-23-0010, Supplement to Duane Arnold Exemption Request Regarding Enhanced Weapons, Firearms Background Checks, and Security Event Notifications Final Rule2023-12-0606 December 2023 Supplement to Duane Arnold Exemption Request Regarding Enhanced Weapons, Firearms Background Checks, and Security Event Notifications Final Rule NG-23-0009, Part 73 Exemption Request Regarding Enhanced Weapons, Firearms Background Checks, and Security Event Notifications Final Rule2023-11-16016 November 2023 Part 73 Exemption Request Regarding Enhanced Weapons, Firearms Background Checks, and Security Event Notifications Final Rule NG-23-0006, Independent Spent Fuel Storage Installation (ISFSI) Financial Assurance Update2023-05-23023 May 2023 Independent Spent Fuel Storage Installation (ISFSI) Financial Assurance Update NG-23-0004, 2022 Annual Radioactive Material Release Report2023-04-25025 April 2023 2022 Annual Radioactive Material Release Report NG-23-0003, 2022 Annual Exposure Report - Form 5s2023-04-21021 April 2023 2022 Annual Exposure Report - Form 5s NG-23-0002, 10 CFR 50.59 Report, Commitment Changes, 10 CFR 72.48 Report, Quality Assurance Program Changes, Technical Specification Basis Changes, and Revision of the DAEC Defueled Safety Analysis Report2023-03-27027 March 2023 10 CFR 50.59 Report, Commitment Changes, 10 CFR 72.48 Report, Quality Assurance Program Changes, Technical Specification Basis Changes, and Revision of the DAEC Defueled Safety Analysis Report NG-23-0001, 2023 Annual Decommissioning and Spent Fuel Management Funding Status Report2023-03-27027 March 2023 2023 Annual Decommissioning and Spent Fuel Management Funding Status Report NG-22-0055, Revision to Duane Arnold Energy Center (DAEC) ISFSI-Only Emergency Plan2022-05-20020 May 2022 Revision to Duane Arnold Energy Center (DAEC) ISFSI-Only Emergency Plan NG-22-0053, 2021 Annual Radiological Environmental Operating Report2022-05-0606 May 2022 2021 Annual Radiological Environmental Operating Report NG-22-0052, Regulatory Issue Summary 2000-11. NRC Emergency Telecommunications System, Statement of Intent to Implement the Proposed Voluntary Initiative2022-05-0404 May 2022 Regulatory Issue Summary 2000-11. NRC Emergency Telecommunications System, Statement of Intent to Implement the Proposed Voluntary Initiative NG-22-0050, Revised Response to Request for Additional Information Relating to Decommissioning Quality Assurance Program, Revision 02022-04-26026 April 2022 Revised Response to Request for Additional Information Relating to Decommissioning Quality Assurance Program, Revision 0 NG-22-0049, 2021 Annual Radioactive Material Release Report2022-04-26026 April 2022 2021 Annual Radioactive Material Release Report NG-22-0035, Response to Request for Additional Information Relating to Decommissioning Quality Assurance Program. Revision 02022-04-13013 April 2022 Response to Request for Additional Information Relating to Decommissioning Quality Assurance Program. Revision 0 NG-22-0047, Registration of Independent Spent Fuel Installation Storage Cask and Notification of Permanent Removal of All Spent Fuel Assemblies from the Spent Fuel Pool2022-04-11011 April 2022 Registration of Independent Spent Fuel Installation Storage Cask and Notification of Permanent Removal of All Spent Fuel Assemblies from the Spent Fuel Pool NG-22-0042, Registration of Independent Spent Fuel Installation Storage Casks2022-04-0808 April 2022 Registration of Independent Spent Fuel Installation Storage Casks NG-22-0041, and Independent Spent Fuel Storage Installation, 2022 Annual Decommissioning and Spent Fuel Management Funding Status Report2022-03-31031 March 2022 and Independent Spent Fuel Storage Installation, 2022 Annual Decommissioning and Spent Fuel Management Funding Status Report NG-22-0031, 2021 Annual Exposure Report - Form 5s2022-03-23023 March 2022 2021 Annual Exposure Report - Form 5s NG-22-0030, Registration of Independent Spent Fuel Installation Storage Casks2022-03-23023 March 2022 Registration of Independent Spent Fuel Installation Storage Casks NG-22-0025, Registration of Independent Spent Fuel Installation Storage Casks2022-03-0808 March 2022 Registration of Independent Spent Fuel Installation Storage Casks NG-22-0021, Registration of Independent Spent Fuel Installation Storage Casks2022-02-24024 February 2022 Registration of Independent Spent Fuel Installation Storage Casks NG-22-0014, Registration of Independent Spent Fuel Installation Storage Casks2022-02-10010 February 2022 Registration of Independent Spent Fuel Installation Storage Casks NG-22-0009, Registration of Independent Spent Fuel Installation Storage Casks2022-01-20020 January 2022 Registration of Independent Spent Fuel Installation Storage Casks NG-22-0001, Supplement to Exemption Request for Failed Fuel Can Weight in a Certificate of Compliance 1004 Renewed Amendment 17 61BTH Type 2 Dry Shielded Canister2022-01-0606 January 2022 Supplement to Exemption Request for Failed Fuel Can Weight in a Certificate of Compliance 1004 Renewed Amendment 17 61BTH Type 2 Dry Shielded Canister NG-21-0038, Registration of Independent Spent Fuel Installation Storage Casks2021-12-22022 December 2021 Registration of Independent Spent Fuel Installation Storage Casks NG-21-0035, Supplement to Exemption Request for Failed Fuel Can Weight in a Certificate of Compliance 1004 Renewed Amendment 17 61 Bth Type 2 Dry Shielded Canister2021-12-10010 December 2021 Supplement to Exemption Request for Failed Fuel Can Weight in a Certificate of Compliance 1004 Renewed Amendment 17 61 Bth Type 2 Dry Shielded Canister NG-21-0030, Exemption Request for Failed Fuel Can Weight in a Certificate of Compliance 1004 Renewed Amendment 17 61 Bth Type 2 Dry Shielded Canister2021-10-21021 October 2021 Exemption Request for Failed Fuel Can Weight in a Certificate of Compliance 1004 Renewed Amendment 17 61 Bth Type 2 Dry Shielded Canister NG-21-0028, Request for Approval of NextEra Energy Duane Arnold, Llc'S Decommissioning Quality Assurance Program Revision 02021-07-30030 July 2021 Request for Approval of NextEra Energy Duane Arnold, Llc'S Decommissioning Quality Assurance Program Revision 0 NG-21-0010, License Amendment Request (TSCR-192): Independent Spent Fuel Storage Installation (ISFSI) Emergency Plan and Emergency Action Level Scheme2021-06-28028 June 2021 License Amendment Request (TSCR-192): Independent Spent Fuel Storage Installation (ISFSI) Emergency Plan and Emergency Action Level Scheme NG-21-0026, CFR 72.48 Report of Changes. Tests. and Experiments2021-06-16016 June 2021 CFR 72.48 Report of Changes. Tests. and Experiments NG-21-0011, Submittal of 2020 Annual Radiological Environmental Operating Report2021-05-0404 May 2021 Submittal of 2020 Annual Radiological Environmental Operating Report NG-21-0009, Report of Facility Changes. Tests and Experiments. and Commitment Changes2021-04-27027 April 2021 Report of Facility Changes. Tests and Experiments. and Commitment Changes NG-21-0021, Supplement to License Amendment Request (TSCR-185): Application to Revise Operating License to Remove Cyber Security Plan Requirements2021-04-22022 April 2021 Supplement to License Amendment Request (TSCR-185): Application to Revise Operating License to Remove Cyber Security Plan Requirements NG-21-0006, 2021 Annual Decommissioning and Spent Fuel Management Funding Status Report2021-03-31031 March 2021 2021 Annual Decommissioning and Spent Fuel Management Funding Status Report NG-21-0005, NextEra Energy Duane Arnold, LLC - Transmittal of the DAEC Defueled Safety Analysis Report Revision 02021-03-29029 March 2021 NextEra Energy Duane Arnold, LLC - Transmittal of the DAEC Defueled Safety Analysis Report Revision 0 NG-20-0094, License Amendment Request (TSCR-189): Revision to Facility License and Technical Specifications to Reflect Permanent Removal of Spent Fuel from the Spent Fuel Pool2021-02-19019 February 2021 License Amendment Request (TSCR-189): Revision to Facility License and Technical Specifications to Reflect Permanent Removal of Spent Fuel from the Spent Fuel Pool NG-21-0004, Response to Request for Additional Information Related to Post Shutdown Decommissioning Activities Report2021-02-0505 February 2021 Response to Request for Additional Information Related to Post Shutdown Decommissioning Activities Report NG-20-0078, Update to Spent Fuel Management Plan Pursuant to 10 CFR 50.54(bb)2021-01-13013 January 2021 Update to Spent Fuel Management Plan Pursuant to 10 CFR 50.54(bb) NG-20-0101, Request for a One-Time Exemption from 10 CFR 73, Appendix B, Section VI, Subsection C.3.(1)(1) Regarding Annual Force-on-Force (FOF) Exercises, Due to COVID-19 Pandemic2020-12-29029 December 2020 Request for a One-Time Exemption from 10 CFR 73, Appendix B, Section VI, Subsection C.3.(1)(1) Regarding Annual Force-on-Force (FOF) Exercises, Due to COVID-19 Pandemic NG-20-0099, Response to Request for Additional Information Relating to License Amendment Request (TSCR-187): Proposed Permanently Defueled Emergency Plan and Permanently Defueled Emergency Action Level Scheme2020-12-0101 December 2020 Response to Request for Additional Information Relating to License Amendment Request (TSCR-187): Proposed Permanently Defueled Emergency Plan and Permanently Defueled Emergency Action Level Scheme NG-20-0093, Supplement to License Amendment Request (TSCR-187): Proposed Permanently Defueled Emergency Plan and Permanently Defueled Emergency Action Level Scheme2020-10-29029 October 2020 Supplement to License Amendment Request (TSCR-187): Proposed Permanently Defueled Emergency Plan and Permanently Defueled Emergency Action Level Scheme NG-20-0090, Certification of Permanent Removal of Fuel from the Reactor Vessel for Duane Arnold Energy Center2020-10-12012 October 2020 Certification of Permanent Removal of Fuel from the Reactor Vessel for Duane Arnold Energy Center NG-20-0083, Registration of Independent Spent Fuel Installation Storage Casks2020-10-12012 October 2020 Registration of Independent Spent Fuel Installation Storage Casks NG-20-0069, Response to Request for Additional Information Relating to Request for Exemption from Portions of 10 CFR 50.47 and 10 CFR 50, Appendix E2020-10-0707 October 2020 Response to Request for Additional Information Relating to Request for Exemption from Portions of 10 CFR 50.47 and 10 CFR 50, Appendix E NG-20-0082, Registration of Independent Spent Fuel Installation Storage Casks2020-09-28028 September 2020 Registration of Independent Spent Fuel Installation Storage Casks NG-20-0071, Request for One-Time Exemption from 10 CFR 50, Appendix E, Biennial Emergency Preparedness Evaluated Exercise Requirements Due to COVID-19 Pandemic2020-09-22022 September 2020 Request for One-Time Exemption from 10 CFR 50, Appendix E, Biennial Emergency Preparedness Evaluated Exercise Requirements Due to COVID-19 Pandemic NG-20-0077, Registration of Independent Spent Fuel Installation Storage Casks2020-09-10010 September 2020 Registration of Independent Spent Fuel Installation Storage Casks NG-20-0073, Notice Regarding Proposed Amendment to Decommissioning Trust Agreements2020-09-0101 September 2020 Notice Regarding Proposed Amendment to Decommissioning Trust Agreements NG-20-0074, Certification of Permanent Cessation of Power Operations2020-08-27027 August 2020 Certification of Permanent Cessation of Power Operations 2024-05-08
[Table view] Category:Periodic Monitoring Report (Radiological/Environmental)
[Table view] |
Text
{{#Wiki_filter:NEXT era M ENERGY ~
DUANE ARNOLD
April 24, 2024 NG-24-0003 10 CFR 50.36a
U . S . Nuclear Regulatory Commission ATTN: Document Control Desk Washington , DC 20555 - 0001
Duane Arnold Energy Center Docket No . 50-331 Renewed Op . License No . DPR -49
2023 Annual Radioactive Material Release Report
Please find as the Enclosure to this letter, a copy of NextEra Energy Duane Arnold , LLC ' s (hereafter, NextEra Energy Duane Arnold) 2023 Annual Radioactive Material Release Report for the Duane Arnold Energy Center (DAEC) . This report satisfies the requirements of Defueled Offsite Dos e Assessment Manual (DODAM) Section 8.2.1 and Technical Specification Section 5.6.3.
This letter makes no new commitments nor changes to existing commitments .
Should you have any questions regarding this matter, please contact Michael Casey at (319) 85 1-7606.
~~
Justin Both Decommissioning Director NextEra Energy Duane Arnold , LLC
Enclosure
cc : Administrator, Region Ill, USNRC Project Manager , DAEC, USNRC Inspector , DAEC, USNRC
NextEra Energy Duane Arnol d, LLC, 3277 DAEC Roa d, Palo, IA 52324 Enclosure to NG-24-0003
Duane Arnold Energy Center 2023 Annual Radioactive Material Release Report
_ 11 pages to follow NEXT era M EN E ~RG~7"Y1~~
ARNOLD DUANE 2023 Annual Radioactive Material Release Report
Duane Arnold Energy Center Palo, Iowa Docket No. 50-331
January 1, 2023, through December 31 , -2023
Pre pa red By :A~.-~=- =~~~e:::....---- Da te : (/4..?-/2.J/
M ichae l C , *on a n d Enviro nm e nta l Marfage rf
V e rifie d B ~'-L..L..L__.__~"""'--"'~""'1...::~::::..__- Da te : tx;/2,,z/$c:>z_f J diologica l Engin ee r
V e rifie d By : __ _ ~ ------ Da te : 'lj,3/ 2- o c. '1 Lo io n P ro jec t Ma n age r'
Approve d By :~~~:.J.UL'!.LL. 4;:.~~ ====- Da te : '-(/ ~ '-{ / ;lOJ_ 4 io ning Directo r 7
Page 1 Table of Contents
PREFACE 3
REGULATORY LIMITS 4
MAXIMUM PERMISSIBLE CONCENTRATIONS 5
GASEOUS EFFLUENTS 5
LIQUID EFFLUENTS 8
RADIOACTIVE SOLID WASTE 11
ADDITIONAL REPORTING REQUIREMENTS 11
Page 2 Preface The Annual Radioactive Material Release Report (ARMRR) covers the operation of the unit during the previous calendar year and shall be submitted prior to May 1 of each year in accordance with 10 CFR 50.36a. The report includes a summary of the quantities of radioactive liquid and gaseous effluents and solid waste released from the unit. The material provided in the report is consistent with the objectives outlined in the DODAM and Process Control Program and in conformance with 10 CFR 50.36a and 10 CFR Part 50, Appendix I, Section IV.B.1.
The Duane Arnold Energy Center (DAEC) permanently shut down on August 10, 2020.
NextEra Energy Duane Arnold (NEDA) informed the NRG by letter dated August 27, 2020 (Accession No. ML20240A067), certifying the permanent cessation of power operations at the DAEC.
In October 2020, NEDA certified by letter (ML20286A317) the permanent defueling of the reactor at DAEC. Therefore, as specified in 10 CFR 50.82(a)(2), the 10 CFR Part 50 license for DAEC no longer authorizes operations of the reactor or emplacement or retention of fuel into the reactor vessel.
In April 2022, all the nuclear fuel had been removed from the fuel pool and placed in dry cask storage at the site Independent Spent Fuel Storage Installation (ISFSI). There are no effluents from the ISFSI based on the design of the casks.
By December 2022, the plant was in SAFSTOR (a long-term storage condition for a permanently shut down nuclear power plant). During SAFSTOR, radioactive contamination decreases substantially, making subsequent decontamination and demolition easier and reducing the amount of low-level radioactive waste requiring disposal. All radioactive and service water systems were drained or placed in a stable condition. Plant systems are monitored, and adverse conditions are documented and addressed as needed.
The contribution of dose to a member of the public is most likely to be exposed from liquid and gaseous effluent releases. Calculation methods in the Defueled Offsite Dose Assessment Manual (DO DAM) follow those prescribed by Regulatory Guide 1.109, "Calculation of Annual Doses to Man from Routine Releases of Reactor Effluents for the Purpose of Evaluating Compliance with 10 CFR Part 50, Appendix I".
Environmental data for the 2023 dose assessment can be found in the Duane Arnold Energy Center 2023 Annual Radiological Environmental Operating Report.
Page 3 Regulatory Limits
Fission and Activation Gases Dose Rate Less than 500 mrem/year to the whole body.
Less than 3000 mrem/year to the skin.
Gamma Air Dose Less than or equal to 5 mrad/quarter.
Less than or equal to 10 mrad/year.
Beta Air Dose Less than or equal to 10 mrad/quarter.
Less than or equal to 20 mrad/year.
Airborne Particulates and Tritium Dose Rate Less than 1500 mrem/year.
Dose Less than or equal to 7.5 mrem/quarter to any organ.
Less than or equal to 15 mrem/year to any organ.
Liquid Effluents Whole Body Dose Less than or equal to 1.5 mrem to the whole body during any calendar quarter.
Less than or equal to 3 mrem to the whole body during any calendar year.
Organ Dose Less than or equal to 5 mrem to any organ during any calendar quarter.
Less than or equal to 10 mrem to any organ during any calendar year.
Concentration Liquid effluents released from the site to unrestricted areas shall not exceed ten times (1 Ox) the concentrations listed in Appendix B, Table 2, Column 2 to 10 CFR 20.1001 - 20.2402.
40 CFR 190 and 10 CFR 72 Dose Less than or equal to 25 mrem annual whole-body dose.
Less than or equal to 75 mrem annual thyroid dose.
Less than or equal to 25 mrem annual dose to any other critical organ.
Page4 Maximum Permissible Concentrations
- Liquid effluent concentrations are limited per DO DAM OLCO 6.1.2 to ten times (1 Ox) the concentration specified in 10 CFR 20 Appendix B, Table 2, Column 2.
- Dose rates, rather than effluent concentrations, are used to calculate permissible release rates for gaseous effluents. The maximum permissible dose rates for gaseous releases are defined in Duane Arnold DODAM Limiting Condition for Operation (OLCO) 6.2.2.
Gaseous Effluents With the nuclear fuel stored at the ISFSI and the plant in SAFSTOR, the building ventilation is only operated to maintain a safe, comfortable working environment. The DODAM gaseous effluent sampling was revised to reflect current plant conditions.
Gaseous Effluent from the Reactor Building Vents, Turbine Building and the Low Level Radwaste Processing and Storage Facility (LLRPSF), when operating, are continuously sampled for particulates and gross alpha. These ventilation systems were operated as necessary to maintain building habitability.
- There were no particulate radionuclides or gross alpha detected on the Turbine Building, Reactor Building or LLRPSF air filters. Filters were changed monthly when ventilation was in service.
- Tritium samples from Reactor Building Vents and LLRPSF were obtained quarterly when ventilation was in service.
- Particulate filters were composited quarterly and sent to an outside lab for analysis of hard-to-detect nuclides Fe-55, Ni-63, Sr-89 and Sr-90 analysis.
- All gaseous effluent releases were continuous and resulted in a small fraction of the 10 CFR 50, Appendix I dose limits.
- There were no abnormal releases of gaseous effluents during the period.
Table 1A includes total activity in Ci for particulate, tritium results and gross alpha. The gross alpha and hard-to-detect nuclides were all less than the lower limit of detection
(<LLD) as reported by Microbac Environmental Inc.
Page 5 Table 1A Gaseous Effluents bv Quarter -
Nuclides 1st Quarter 2 nd Quarter 3rd Quarter 4th Quarter Annual Released Particulates Manganese-54 ND ND ND ND ND (Ci) lron-55 ND ND ND ND ND (Ci) lron-59 ND ND ND ND ND (Ci)
Cobalt-58 ND ND ND ND ND (Ci)
Cobalt-60 ND ND ND ND ND (Ci)
Nickle-63 ND ND ND ND ND (Ci)
Zinc-65 ND ND ND ND ND (Ci)
Strontium-89 ND ND ND ND ND (Ci)
Strontium-90 ND ND ND ND ND (Ci)
Molydeneum- ND ND ND ND ND 99 (Ci)
Cesium-134 ND ND ND ND ND (Ci)
Cesium-137 ND ND ND ND ND (Ci)
Cerium-141 ND ND ND ND ND (Ci)
Cerium-144 ND ND ND ND ND (Ci)
Total for Period ND ND ND ND ND (Ci)
Tritium ND 7.2E-3 2.BE-03 ND 1.0E-2 (Ci)
Gross Alpha ND ND ND ND ND
.. (Ci)
ND 1nd1cates the rad1onuchde was not 1dent1fied 1n any samples using instrumentation that meets the lower hm1t of detection as required by the DODAM
Page 6 In Table 1 B, the receptor of the dose is described such that the dose to any resident near the station is not likely to be underestimated, although conditions more conservative than appropriate for the maximally exposed person may be assumed in the dose assessment. The dose calculations for total body and each organ are displayed for each quarter and the annual limits. Calculations for the release point are performed by the DO DAM in accordance with Reg Guide 1.109.
Table 1 B - Maximum Dose Rates for Gaseous Releases Effluents by quarter and for the Calendar Year 1s1Quarter 2 nd Quarter 3rdQuarter 4 1h Quarter Annual Total Body Dose 7.5e+00 7.5e+00 7.5e+00 7.5e+00 1.5e+01 Limit (mrem)
Total Body 0.0E+00 2.SE-06 1.1 e-6 0.0E+00 3.9e-6 Actual Dose (mrem)
Total Body 0.0% <0.1% <0.1% 0.0% <0.1%
% of Limit Organ 7.5e+00 7.5e+00 7.5e+00 7.5e+00 1.5e+01 Dose Limit (mrem)
GI-LLI 0.0E+00 2.SE-06 1.1 e-6 0.0E+00 3.9e-6 Actual Dose (mrem)
GI-LLI 0.0% <0.1% <0.1% 0.0% <0.1%
% of Limit Bone 0.0E+00 0.0E+00 0.0E+00 0.0E+00 0.0E+00 Actual Dose (mrem)
Bone 0.0 0.0 0.0 0.0 0.0
% of Limit Liver 0.0E+00 2.SE-06 1.1e-6 0.0E+00 3.9e-6 Actual Dose (mrem)
Liver 0.0% <0.1% <0.1% 0.0% <0.1%
% of Limit Kidney 0.0E+00 2.SE-06 1.1 e-6 0.0E+00 3.9e-6 Actual Dose (mrem)
Kidney 0.0% <0.1% <0.1% 0.0% <0.1%
% of Limit Thyroid 0.0E+00 2.SE-06 1.1 e-6 0.0E+00 3.9e-6 Actual Dose (mrem)
Thyroid 0.0% <0.1% <0.1% 0.0% <0.1%
% of Limit Lung 0.0E+00 2.8E-06 1.1 e-6 0.0E+00 3.9e-6 Actual Dose (mrem)
Lung 0.0% <0.1% <0.1% 0.0% <0.1%
% of Limit Skin 0.0E+00 2.SE-06 1.1 e-6 0.0E+00 3.9e-6 Actual Dose (mrem)
Skin 0.0% <0.1% <0.1% 0.0% <0.1%
% of Limit
Page 7 Liquid Effluents
The sewage treatment facility has been shut down and the Iowa Department of Natural Resources in Manchester, Iowa was informed in May of 2023. The influent pipes from the plant sources outside the security building were cut and plugged, the influent pumps were shut off, the discharge pipe was plugged, and the system was emptied. Prior to May 2023, sewage treatment plant samples were collected bi-weekly; there were no plant by-products identified in the samples. The maximum value for the lower limit of detection (LLD) for environmental sample analysis are noted in the DODAM Table 6.3-3. The effluent releases were sampled as part of the Groundwater Protection Program. All other Groundwater Protection Program analyses and results can be found in the Duane Arnold Energy Center 2023 Annual Radiological Environmental Operating Report.
The possibility of plant process systems leaking water to the floor drains and sumps exists. Groundwater that has leaked into the buildings through the pipe and conduit penetrations collect in the floor drains and sumps. This water picks up radioactive nuclides and is collected and treated prior to discharge for ALARA purposes. The water is collected and sampled prior to release to ensure the dose to the public is minimized.
In 2023, there were zero liquid effluent releases in the first three quarters, and twenty three batch releases of liquids from plant radwaste system in the fourth quarter. Volume of Liquid Effluent Released (Prior To Dilution) was 4.5E+04 L and the Volume of Dilution Water used 3.0E+07 L.
Page 8 Table 2A lists the principal radionuclides and presents a quarterly summation of the total activity released (batch mode) and average concentration for all liquid effluents.
Table 2A - Liquid Effluents - Summation of All Releases Nuclides Released 1st Quarter 2nd Quarter 3rdQuarter 4th Quarter Annual Manganese-54 No release No release No release 1.4E-05 1.4E-05 (Ci) lron-55 No release No release No release ND ND (Ci) lron-59 No release No release No release ND ND (Ci)
Cobalt-58 No release No release No release ND ND (Ci)
Cobalt-60 No release No release No release 2.7E-04 2.7E-04 (Ci)
Nickel-63 No release No rel.ease No release 7.1 E-05 7.1 E-05 (Ci)
Zinc-65 No release No release No release 4.3E-7 4.3E-7 (Ci)
Strontium-89 No release No release No release ND ND (Ci)
Strontium-90 No release No release No release 2.4E-06 2.4E-06 (Ci)
Molybdenum-99 No release No release No release ND ND (Ci)
Cesium-134 No release No release No release 4.4E-05 4.4E-05 (Ci)
Cesium-137 No release No release No release 1.8E-04 1.8E-04 (Ci)
Cerium-141 No release No release No release ND ND (Ci)
Cerium-144 No release No release No release ND ND (Ci)
Total for Period No release No release No release 5.8E-04 5.8E-04 (Ci)
Tritium No release No release No release 7.0E-03 7.0E-03 (Ci)
Gross Alpha No release No release No release ND ND (Ci)
ND indicates the radionuclide was not identified in any samples using instrumentation that meets the lower limit of detection as required by the DODAM
In Table 2B, the receptor of the dose is described such that the dose to any resident near the station is not likely to be underestimated, although conditions more conservative than appropriate for the maximally exposed person may be assumed in the dose assessment. The dose calculations for total body and each organ are displayed for each quarter and the annual limits. Calculations for the release point are performed by the DO DAM in accordance with Reg Guide 1.109.
Page 9 Table 2B - Maximum Dose Rates for Liquid Effluents by Quarter and for the Calendar Year 1st Quarter 2nd Quarter 3rd Quarter 4th Quarter Annual Total Body Limit 1.5 1.5 1.5 1.5 3 (mrem)
Total Body No Actual Dose No release No release release 1.0E-01 1.0E-01 (mrem)
Total Body 0.0% 0.0% 0.0% 6.8% 3.4%
% of Limit Dose 5 5 5 5 10 Limit (mrem)
GI-LU No Actual Dose No release No release 5.SE-03 5.SE-03 (mrem) release GI-LU 0.0% 0.0% 0.0% 0.1% 0.1%
% of Limit Bone No Actual Dose No release No release 1.0E-01 1.0E-01 (mrem) release Bone 0.0% 0.0% 0.0% 2.1% 1.0%
% of Limit Liver No Actual Dose No release No release 1.5E-01 1.5E-01 (mrem) release Liver 0.0% 0.0% 0.0% 3.0% 1.5%
% of Limit Kidney No Actual Dose No release No release release 5.0E-02 5.0E-02 (mrem)
Kidney 0.0% 0.0% 0.0% 1.0% 0.5%
% of Limit Thyroid No Actual Dose No release No release release 4.1E-05 4.1 E-05 (mrem)
Thyroid 0.0% 0.0% 0.0% 0.0% 0.0%
% of Limit Lung No Actual Dose No release No release 1.6E-02 1.6E-02 (mrem) release Lung 0.0% 0.0% 0.0% 0.3% 0.2%
% of Limit Skin No Actual Dose No release No release O.OE+OO O.OE+OO release (mrem)
Skin 0.0% 0.0% 0.0% 0.0% 0.0%
% of Limit
Page 10 Radioactive Solid Waste
No radioactive waste shipments occurred during 2023, therefore no classification of waste is declared.
ADDITIONAL REPORTING REQUIREMENTS
There were no revisions to the ODAM in 2023.
The potential for any off-site consequences from radiological accidents has been evaluated and been determined to be unobtainable. Therefore, there is no longer a need for on-site meteorological data accumulation. During the final decommissioning and dismantling phases, administrative controls over radiological source accumulation will preempt any significant radiological release to the environment. Past meteorological data for the general area can be obtained from the National Weather Service.
There were no sample analyses/conditions for which communications were made to State and Local officials due to exceeding the applicable ODAM reporting levels.
There were no spills or leaks of radioactive material that were communicated to State and Local stakeholders.
Page 11}}