Issues and practices in the use of effects data from FREDERICA in the ERICA Integrated Approach

Garnier‐Laplace, Jacqueline; Copplestone, David; Gilbin, Rodolphe; Alonzo, Frédéric; Ciffroy, Philippe; Gilek, Michael; Agüero, A.; Björk, Mikael; Oughton, Deborah; Jaworska, A; Larsson, Carl‐Magnus; Hingston, J. L.

doi:10.1016/j.jenvrad.2008.04.012

Cited by 102 publications

(60 citation statements)

References 17 publications

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“…For radioactive substances, radiotoxicity values of EDR 50 come from previous work from Garnier-Laplace et al [8,11]. The 95% confidence interval on the geometric mean was calculated by bootstrap using R library [12].…”

Section: Input Data and Statisticsmentioning

confidence: 99%

A Screening Level Ecological Risk Assessment and ranking method for liquid radioactive and chemical mixtures released by nuclear facilities under normal operating conditions

et al. 2009

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Abstract. Ecological Risk Assessment is used to evaluate the potential hazards to the environment that are attributable to emissions of pollutants from industries. There is guidance available regarding the general ecological risk assessment process including problem formulation, exposure and effect analyses, and risk characterization. In a first step, the Screening-Level Ecological Risk Assessment (SLERA) is used to evaluate whether the emissions can put the receptor ecosystems at risk or not. Concerning releases from nuclear facilities under authorization, any SLERA is a challenging task because of (1) the large number of substances, (2) the various quantities that may be emitted to the aquatic ecosystems and (3) the various environmental situations to be considered. This task must be performed for two categories of pollutants, radionuclides and chemicals, each exhibiting specificities in terms of concentration in media or dose-effect relationships. Since these relationships for radioactive substances are based on the tissue-absorbed dose in Gray, the first step is to express critical exposure values to radionuclides in a consistent way with the critical concentration used for chemicals. We describe here the screening and ranking method that was developed and an application to the electronuclear sites along the Rhône River.

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Section: Input Data and Statisticsmentioning

confidence: 99%

A Screening Level Ecological Risk Assessment and ranking method for liquid radioactive and chemical mixtures released by nuclear facilities under normal operating conditions

et al. 2009

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“…High priority CRwo-soil values have been defined as those where: (i) the contribution of internal dose to the total weighted absorbed dose rate was above 70%, and (ii) the internal weighted absorbed dose rate was above 1E-3 μGy h −1 , assuming 1 Bq kg −1 dw soil. The choice of criteria values was partially based on a comparison with the 10 μGy h −1 default screening value in the ERICA Tool (Larsson, 2008;Howard et al, 2010;GarnierLaPlace et al 2008;Andersson et al, 2009). For example, assuming 1 Bq kg −1 dw in soil, an estimated internal dose rate of 1E-3 μGy h −1 means that 10,000 Bq kg −1 dw would be required in soil to result in a dose rate of 10 μGy h −1 .…”

Section: 2mentioning

confidence: 99%

Exploring methods to prioritise concentration ratios when estimating weighted absorbed dose rates to terrestrial Reference Animals and Plants

Howard

Wells

Beresford

et al. 2013

Journal of Environmental Radioactivity

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The ICRP and IAEA have recently reported Concentration Ratio values (CRwo-mediaequilibrium radionuclide activity concentration in whole organism divided by that in media) for Reference Animals and Plants (RAPs) and a wide range of organism groups, respectively, based on a common online database. Given the large number of data gaps in both publications, there is a need to develop methods for identifying the relative importance of improving currently available CRwo-media values. A simple, transparent approach involving the derivation and comparison of predicted internal and external weighted absorbed dose rates for radionuclides considered by ICRP (2009) for terrestrial RAPs is presented. Using the approach of applying a reference value of CRwo-soil = 1 or using the maximum reported values where CRwo-soil >1, we provisionally identify terrestrial radionuclide RAP combinations which could be considered low priority, notably: Ca, Cr and Ni consistently; Mn for all RAPs except Deer and Pine Tree; and Tc for all RAPs but Wild Grass. Equally, we can systematically identify high priority elements and radioisotopes, which largely, but not exclusively, consist of alpha-emitters (especially isotopes of Ra and Th, but also consistently Am, Cf, Cm, Np, Pa, Po, Pu, U). The analysis highlights the importance of the radiation weighting factor default assumption of 10 for alphaemitters in the ERICA Tool when comparing the magnitude of the internal dose and trying to identify high priority RAP-isotope combinations. If the unweighted Dose Conversion Coefficient (DCC) values are considered, those for alpha-emitters are often one order of magnitude higher than those due to some beta-gamma emitters for terrestrial RAPs, whereas with the radiation weighting factor applied they are two orders of magnitude higher.1.

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“…Each dataset was substituted for regression analysis to reconstruct the dose(rate) -effect relationship and then estimate the critical exposure values that were defined the same way as in [5,6]. Thus, the dose giving 50% change in observed effect (ED 50 ) in comparison to control is considered as the critical dose for acute exposure, and the critical dose rate for chronic exposure is defined as the dose rate resulting in 10% change of observed effect (EDR 10 ).…”

Section: Dose (Rate) -Effect Modelsmentioning

confidence: 99%

Development of an approach to assess critical doses and dose rates for cultivated plants

2011

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Abstract. The aim of this work is to develop methods for an assessment of critical doses and dose rates that can result in significant radiation-induced effects in agrocenoses. This is realized on an example of cultivated plants which are one of the main components of agroecosystems. Available information on dose dependences in such umbrella endpoints as reproduction, survival, morbidity, alterations in morphological and biochemical processes, genetic effects in crops, vegetables, fruit trees, etc are gathered from papers issued mainly in Russian scientific press during last 50 years. Data are maintained as database in MS Access that contains about 10000 records at the moment. As critical exposure values, doses are considered producing 50% changes of biological effect at acute impact (ED 50 ), or dose rates resulting in 10% changes at chronic exposure of plants (EDR 10 ). The critical doses and dose rates for agrocenosis estimated from available information on reproduction and survival are presented here. Primary data are assesed for their quality according to several criteria. Three models (linear, logariphmic, logistic) for dose-effect relationship are tested for an applicability to fit a dose-effect dependence taking account of their goodness-of-fit and robustness of ED 50 and EDR 10 estimates.

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Issues and practices in the use of effects data from FREDERICA in the ERICA Integrated Approach

Cited by 102 publications

References 17 publications

A Screening Level Ecological Risk Assessment and ranking method for liquid radioactive and chemical mixtures released by nuclear facilities under normal operating conditions

A Screening Level Ecological Risk Assessment and ranking method for liquid radioactive and chemical mixtures released by nuclear facilities under normal operating conditions

Exploring methods to prioritise concentration ratios when estimating weighted absorbed dose rates to terrestrial Reference Animals and Plants

Development of an approach to assess critical doses and dose rates for cultivated plants

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