IAEA MODARIA II (2016 – 2019) 22 nd October 2018 Assessments and control of exposures to public and biota for planned releases to the environment Juan C. Mora IAEA International Atomic Energy Agency
Problem • The paradigm “ the standards of environmental control needed to protect the general public would ensure that other species were not put at risk ” changed to “ the need to be able to demonstrate (rather than to assume) that the environment is being protected against radionuclides ” . • “ Establish a consistent and comprehensive basis for the proper protection of people and the environment against radiation risks [ … ] without unduly limiting the operation of facilities . ” IAEA
2 nd INTERIM MEETING Ljubljana - Slovenia (Jozef Stefan Institute (JSI)) (7-10 May 2018) IAEA
General information - People attending – 12 - Countries - 10 - 3 presentations - Report preparation - Paper preparation - 3 technical visits (LSC and HRGSL of JSI, Krško NPP) IAEA
WG3: Report IAEA
WG3: Working steps (Chapters) 1. Methodology for biota impact assessments ( Valeria Amado ). 2. Identify practical international and national guidance for the demonstration of the compliance with requirements for the protection of the environment against ionizing radiations ( Stephanie Bush- Goddard + Maria Psaltaki ). 3. Identify state of the art tools, sources of data and methods for performing dose assessments in routine radioactive discharges which can be used in integrated assessments of the humans and the biota, including uncertainties ( Justin Smith ). 4. Study, Validate and Incorporate H3 and C14 state of the art models ( Volodymyr Korolevych + Nana Kwamena ) 5. Identify a set of cases and scenarios where explicit assessment of the environment would be necessary ( Iuri Bonchuk ). 6. Carry out dose assessments for humans and the biota in those scenarios with associated uncertainty analysis ( Benjamin Zorko ). 7. Studies to evaluate if generic organisms are enough to demonstrate that the environment is protected in a dose assessment for routine release ( Benoit Charrasse + Amanda Andersson ) 8. Communication with stakeholders ( Cecile Boyer + Elisabeth Leclerc ) 9. Evaluate and compare models, approaches, parameters and other characteristics used in the assessments ( Benjamin Zorko + JC Mora ). 10. Discuss the results and give advice to the IAEA on needs and gaps ( JC Mora ). IAEA
WG3: What has been done IAEA
WG3: What has been done IAEA
WG3: What has been done Tool 1 User Availabili Human Biota dose Atmospheric Lake River Estuary Marine Same dispersion Same activity ICRP RAPs Are ref Com models 2 concentrations 3 ty dose rate only levels/crit ment eria for s humans or biota included? ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ CIEMAT CROM 8 X X X ABmerit ESTE ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ (Slovak X X Republic) IRSN/EDF SYMBIOS ✓ ✓ ✓ ✓ planned planned X ? ? ? X (France) E PC- planned ✓ ✓ ✓ ✓ ✓ PHE (UK) planned X X X X CREAM ARIA ✓ ✓ X X X X X n/a n/a n/a X Andra Impact (France) Andra ✓ ✓ X X X X X n/a n/a n/a X MOM ✓ ✓ ✓ ✓ CERES X X X n/a X CEA ERICA / X X ✓ ✓ ✓ ✓ ✓ ✓ (France) X X X SRS19 KDOSE60 (based on USNRC ✓ ✓ ✓ ✓ X ? ? n/a X 1.109) Korean X X ENDOS codes INDAC 2.0 K-BIOTA ✓ X X X X X X X X V3.0 4 BARC Based in ✓ ✓ ✓ ✓ (India) part on X X X n/a n/a n/a X SRS19 IAEA
WG3: What has been done Installation Providing the To provide Dose assessments Name Type data For Humans For Biota ARN (VA) ARN (VA) CIEMAT (JCM) CIEMAT (JCM) EDF+IRSN (CM) ESTE AI (PC) ESTE AI (PC) Chinon NPP EDF+IRSN EDF+IRSN (CM) PHE (JS) PHE (JS) CEA (BC) CEA(BC) CLRP ( PK ) Iurii Bonchuk (Ukraine) Iurii Bonchuk (Ukraine) Iurii Bonchuk (Ukraine) Iurii Bonchuk (Ukraine) USA USNRC+DoE NPP DoE+USNRC+ANL (SBG, AA & CY) DoE+USNRC+ANL (SBG, AA & CY) Millstone (SBG & AA) Mr Gu (China) Mr Gu (China) ANDRA+CEA (EL & BC) ANDRA+CEA (EL & BC) LILW Surface L'Aube ANDRA (EL) ARN+CIEMAT (VA & JCM) ARN+CIEMAT (VA & JCM) Repository PHE (JS) PHE (JS) Mr Gu (China) Mr Gu (China) CLRP ( PK ) CLRP ( PK ) ESTE-AI ESTE-AI Cadarache Large Research CEA (BC) PHE PHE Labs Laboratory EDF+IRSN EDF+IRSN CEA (BC) CEA (BC) Iurii Bonchuk (Ukraine) Iurii Bonchuk (Ukraine) ARN+CIEMAT+SJI (VA, JCM and BZ) ARN+CIEMAT+SJI (VA, JCM and BZ) Spent Nuclear Fuel PHE (JS) PHE (JS) La Hague ANDRA (EL) Reprocessing Plant ANDRA (EL) ANDRA (EL) CEA (BC) CEA (BC) NPP, Heavy water Atucha NRA (VA) IAEA reactor
WG3: What has been done Name of the modeler L. Liptak, E.Fojcikova, P.Carny, M.Chyly Institution ABmerit s.r.o. (Ltd), Slovakia For Human For Biota Lagrangian puff trajectory model (PTM), software: Model used for the atmospheric dispersion Lagrangian puff trajectory model (PTM), software: ESTE AI. ESTE AI. Model used for the liquid dispersion Compartment model, software: ESTE AI. Compartment model, software: ESTE AI. Model Name(s) for Dose calculation ESTE Limit value used (>0) : Unit of the dose calculated mSv Type of dose calculation Deterministic + module for uncertainty analyses (Deterministic/Probabilistic) Reference area (km x km) Area with radius of 10 km. Model Name(s) for Dose Rate calculation ESTE What is the methodology you are using for Dose due to the Atmospheric release DS472, ICRP108 the evaluation of the biota (national law, DS472, NUREG … ) The average dose to the mGy/d Unit of the Dose rate calculated representative person Exposure Pathways considered Yes / no calculated due to the Major nuclides Type of dose calculation exposure pathway with (Deterministic/Probabilistic) respect to the reference area Deterministic Reference area (km x km) Ingestion of terrestrial foods Yes 1.2E-03 Area with radius of 10 km. ± 2.00E-04 H3(99%) Inhalation of plume Yes 7.9E-03 ± H3(99%) Inhalation of resuspended material No ± Internal pathway Average / max Dose rate for External pathway The average internal Reference dose rate (mGy/d) Ingestion of water (contamination from atmospheric deposit) No ± for RO/RAP calculated with respect to the Organisms considered (RAP, surrogate dose rat e to the (ICRP 108 and DS427) - upper reference area Average Total Dose organism,...) - Terrestrial and Aquatic fauna RO/RAP calculated with value of the band where very Risk index Skin dose (case of tritium) No ± rate and flora respect to the low probability of effects is External cloud shine External ground shine reference area expected (ICRP 108) Accidentelly ingested material No ± Amphibian 8.0E-06 ± ± 1.7E-12 ± 8.0E-06 ± 10 8.0E-07 ± Bird 8.0E-06 ± ± 3.2E-12 ± 8.0E-06 ± 1 8.0E-06 ± Mollusc-gastropod ± ± ± ± 10 ± IAEA reptile ± ± ± ± 1 ± Annelid - earthworm 1.6E-05 ± ± 8.2E-12 ± 1.6E-05 ± 100 1.6E-07 ±
WG3: What has been done IAEA
WG3: What has been done IAEA
WG3: During this week • Presentation/Discussion of results of dose assessments • Additional source term information • Discussions/Advance on the different chapters • Joint meeting WG1/WG7 (marine models) IAEA
Training courses • ESTE AI (ABMerit) • Advanced use of CROM (SRS19) IAEA
Thank you! Jc.mora@ciemat.es IAEA
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