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Conversion of simulated radioactive pollutant gas concentrations for a complex building array into radiation dose

Gallacher, DJ, Robins, AG and Hayden, P (2016) Conversion of simulated radioactive pollutant gas concentrations for a complex building array into radiation dose Journal of Radiological Protection, 36. pp. 785-818.

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Abstract

Methods used to convert wind tunnel and ADMS concentration feld data for a complex building array into effective radiation dose were developed based on simulations of a site in central London. Pollutant source terms were from positron emitting gases released from a cyclotron and clinical PET radiotracer facility. Five years of meteorological data were analysed to determine the probability distribution of wind direction and speed. A hemispherical plume cloud model (both static and moving) was developed which enabled an expression of gamma-ray dose, taking into account build-up factors in air, in terms of analytic functions in this geometry. The standard building wake model is presented, but this is extended and developed in a new model to cover the concentration feld in the vicinity of a roof top structure recirculation zone, which is then related to the concentration in the main building wake zone. For all models presented the effective dose was determined from inhalation, positron cloud immersion and gamma ray plume contributions. Results of applying these models for determination of radiation dose for a particular site are presented elsewhere.

Item Type: Article
Subjects : Mechanical Engineering
Authors :
NameEmailORCID
Gallacher, DJUNSPECIFIEDUNSPECIFIED
Robins, AGa.robins@surrey.ac.ukUNSPECIFIED
Hayden, Pp.hayden@surrey.ac.ukUNSPECIFIED
Date : 2016
Identification Number : https://doi.org/10.1088/0952-4746/36/4/785
Copyright Disclaimer : © 2016 IOP Publishing Ltd
Uncontrolled Keywords : radiation dose, wind tunnel, ADMS, positron, PET, plume, building
Depositing User : Symplectic Elements
Date Deposited : 17 May 2017 13:58
Last Modified : 18 May 2017 12:54
URI: http://epubs.surrey.ac.uk/id/eprint/841044

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