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IRSN, Institut de radioprotection et de sûreté nucléaire

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Enhancing Nuclear Safety


Research

 

Aerosol physics, measurement methods, sources and transport


Description

Aerosols are the main vectors for possible transfer of contamination between a nuclear facility and the environment. Aerosol physics is therefore an essential link between the facility (covered in safety studies) and humans and their environment (covered in radiological protection studies). This field of research is exactly at the crossroads between protection and safety-related issues.

Two main areas of research

In order to understand the various mechanisms involved in contamination transfer, our corresponding research programs cover two main areas:
- aerosol sources and transport,
- measurement methods and assessment.
Aerosol sources and transport:
- sources, characterization: nucleation, re-entrainment and powder drop, state of electric charges, shape factor,
- evolution in space and time: condensation, evaporation, agglomeration,
- particle sinks: interaction with surfaces, transport in ducts, filtration,
- the specific case of radon decay product dynamics.

Measurement methods and assessment:
- development of new measuring equipment,
- development of qualification means (test benches with radioactive or non-radioactive aerosols),
- sampling strategy.

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