title: Evaluating variability and uncertainty in radiological impact assessment using SYMBIOSE.
abstract: SYMBIOSE is a modelling platform that accounts for variability and uncertainty in radiological impact assessments, when simulating the environmental fate of radionuclides and assessing doses to human populations. The default database of SYMBIOSE is partly based on parameter values that are summarized within International Atomic Energy Agency (IAEA) documents. To characterize uncertainty on the transfer parameters, 331 Probability Distribution Functions (PDFs) were defined from the summary statistics provided within the IAEA documents (i.e. sample size, minimal and maximum values, arithmetic and geometric means, standard and geometric standard deviations) and are made available as spreadsheet files. The methods used to derive the PDFs without complete data sets, but merely the summary statistics, are presented. Then, a simple case-study illustrates the use of the database in a second-order Monte Carlo calculation, separating parametric uncertainty and inter-individual variability.
authors.affiliation: Institut de Radioprotection et de Sûreté Nucléaire (IRSN), PRP-ENV, SERIS, LM2E, Cadarache, France. Electronic address: marie.simon-cornu@irsn.fr.
authors.forename: M
authors.initials: M
authors.lastname: Simon-Cornu
authors.affiliation: Institut de Radioprotection et de Sûreté Nucléaire (IRSN), PRP-ENV, SERIS, LM2E, Cadarache, France.
authors.forename: K
authors.initials: K
authors.lastname: Beaugelin-Seiller
authors.affiliation: Institut de Radioprotection et de Sûreté Nucléaire (IRSN), PRP-ENV, SERIS, LM2E, Cadarache, France.
authors.forename: P
authors.initials: P
authors.lastname: Boyer
authors.affiliation: Institut de Radioprotection et de Sûreté Nucléaire (IRSN), PRP-ENV, SESURE, LERCM, Cadarache, France.
authors.forename: P
authors.initials: P
authors.lastname: Calmon
authors.affiliation: Institut de Radioprotection et de Sûreté Nucléaire (IRSN), PRP-ENV, SERIS, L2BT, Cadarache, France.
authors.forename: L
authors.initials: L
authors.lastname: Garcia-Sanchez
authors.affiliation: Institut de Radioprotection et de Sûreté Nucléaire (IRSN), PRP-ENV, SERIS, LM2E, Cadarache, France.
authors.forename: C
authors.initials: C
authors.lastname: Mourlon
authors.affiliation: Institut de Radioprotection et de Sûreté Nucléaire (IRSN), PRP-ENV, SERIS, LM2E, Cadarache, France.
authors.forename: V
authors.initials: V
authors.lastname: Nicoulaud
authors.affiliation: Institut de Radioprotection et de Sûreté Nucléaire (IRSN), PRP-ENV, SERIS, LM2E, Cadarache, France.
authors.forename: M
authors.initials: M
authors.lastname: Sy
authors.affiliation: Institut de Radioprotection et de Sûreté Nucléaire (IRSN), PRP-ENV, SERIS, LM2E, Cadarache, France.
authors.forename: M A
authors.initials: MA
authors.lastname: Gonze
mesh_terms: D011868:Radioisotopes / Q000032:analysis*; D035501:Uncertainty
chemical_list: D011868:Radioisotopes
keywords: Dosimetric impact; EMRAS TRS 472; Multi-media modelling; Probabilistic exposure assessment; Transfer factors