Progress in understanding key aerosol issues

Herranz, L.E.; Ball, J. M.; Auvinen, Ari; Bottomley, D.; Dehbi, A.; Housiadas, C.; Piluso, Pascal; Layly, V. D.; Parozzi, F.; Reeks, Michael W.

doi:10.1016/j.pnucene.2009.09.013

Cited by 15 publications

(7 citation statements)

References 15 publications

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“…where: (14) and D is the particle diffusion coefficient. Diffusional filtering in real cracks is expected to be greater than for straight-sided channels because of increased wall surface area and the occurrence of laminar-swirl effects analogous to Dean flow in pipe bends [9].…”

Section: Diffusional Filtering Comparisonsmentioning

confidence: 99%

“…Here, we will focus on a recent example of modelling described in Refs. [14,15]. However, the cracks are represented by straight-sided channels, and turbulent deposition mechanisms are used there to model inertial deposition in an effort to match the filtering measurements of Gelain and Vendel [5], as interpreted by those authors.…”

Section: Other Theoretical Modellingmentioning

confidence: 99%

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Theoretical modelling of gas flow and filtering of particulates in cracks in containment barriers, and comparison with other theoretical and empirical studies

Han

2012

Fusion Engineering and Design

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Section: Diffusional Filtering Comparisonsmentioning

confidence: 99%

Section: Other Theoretical Modellingmentioning

confidence: 99%

Theoretical modelling of gas flow and filtering of particulates in cracks in containment barriers, and comparison with other theoretical and empirical studies

Han

2012

Fusion Engineering and Design

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“…In nuclear safety for example, deposition of radioactive particles is essential for the characterization of the radioactive mass arriving on the last barrier of containment before environmental release, i.e. the High Efficiency Particulate Air filters (Burkett et al 1984;Herranz et al 2010). It is also important to determine where the radioactive deposit mainly occurs, the radioactive load is therefore known for the protection of maintenance workers against radioactive contamination.…”

Section: Introductionmentioning

confidence: 99%

Dry aerosol particle deposition on indoor surfaces: Review of direct measurement techniques

Costa

Malet

Gehin

2021

Aerosol Science and Technology

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Localizing and measuring aerosol deposition is essential to gain knowledge on contaminants and their transfer mechanisms, cleanliness of people's environments and consequently on health. However, examining aerosol deposition is challenging, as it is based on several different mechanisms linked to aerosols, surfaces and air flow properties . Many techniques exist to measure aerosol deposition, but only a few techniques directly measure aerosol deposition without modifying the deposition itself. This paper gathers and details the existing measurement techniques, which directly measure a depositing flux of aerosol particles on indoor surfaces. They are classified according to whether they measure a mass or a number surface deposition concentration. Among the mass concentration measurement techniques, a few are the most commonly used in the literature and are well-known, whereas the family of micro-sensors was recently developed and continue to be improved in laboratory experiments. Micro-sensors request to know more about theoretical and technical aspects for building and implementing. The features of micro-sensors entail generally an ability to carry in situ and close to real-time measurement. The number concentration measurement techniques are essentially based on optical systems. Commercial devices apart, these techniques are adaptable and their configurations depend on the experimental constraints. They also require some theoretical consideration depending on which kind of aerosol deposition is observed.On the contrary, the commercial devices are turnkey solutions and are developed for specific domains, such as cleanroom deposition measurement, in order to provide user-friendly devices and an easier reached repeatability in the measurement protocol.

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“…The most thor ough study of the processes of evaporation of the main components of corium and fission products dissolved in it as a function of the oxidation potential of the melt is fulfilled for the initial corium, corresponding to the composition and temperature inside the reactor vessel in the case of a severe accident [3]. The yield of the fis sion products (primarily, iodine and cesium) in the composition of aerosols was studied in the SARNET project [4].…”

Section: Introductionmentioning

confidence: 99%

A study of the liquid and gaseous phases upon the interaction of molten corium with the sacrificial material based on iron oxide and Portland cement

Udalov¹,

Poznyak

Sazavsky

et al. 2016

Glass Phys Chem

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Changes in the intensity of evaporation and the composition of condensing oxides are experimen tally studied upon diluting corium by iron(III) oxide and Portland cement. It is found that the formation rate of aerosols over the melt is reduced upon diluting the corium by the studied sacrificial material by almost an order of magnitude up to 0.5 g/(cm 2 s). In the reducing atmosphere, the form of the particles of the aerosols is octahedral and in an oxidizing atmosphere it is spherical.

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Progress in understanding key aerosol issues

Cited by 15 publications

References 15 publications

Theoretical modelling of gas flow and filtering of particulates in cracks in containment barriers, and comparison with other theoretical and empirical studies

Theoretical modelling of gas flow and filtering of particulates in cracks in containment barriers, and comparison with other theoretical and empirical studies

Dry aerosol particle deposition on indoor surfaces: Review of direct measurement techniques

A study of the liquid and gaseous phases upon the interaction of molten corium with the sacrificial material based on iron oxide and Portland cement

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