An approach to the subslab depressurization remedial action in a high (222)Rn concentration dwelling.
J Environ Radioact
; 101(3): 219-25, 2010 Mar.
Article
em En
| MEDLINE
| ID: mdl-19969402
ABSTRACT
Galicia (NW Spain) is a radon-prone area in the Iberian Peninsula. Measurements were carried out at a rural dwelling, with an annual average of radon concentration over 4000 Bq m(-3) and a maximum of 9000 Bq m(-3), found during a radon screening campaign held in the Autonomous Community of Galicia. We performed a detailed study to identify the main contamination source and the behaviour of the radon concentration, in which a linear dependence with temperature was verified, once corrected for relative humidity. We used different passive methods (charcoal canisters and two types of etched track detectors) as well as a radon concentration monitor that provided continuous measurement. Subsequent to this characterization, and in order to reduce the high radon concentration, a remedial action was developed using different passive and forced ventilation methods. A modified subslab depressurization technique was found to be the most effective remedy, providing a radon concentration reduction of around 96%. This method also has the advantages of being inexpensive and reliable over time.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Ventilação
/
Monitoramento de Radiação
/
Radônio
/
Poluição do Ar em Ambientes Fechados
/
Contaminação Radioativa do Ar
Tipo de estudo:
Prognostic_studies
Limite:
Humans
País/Região como assunto:
Europa
Idioma:
En
Ano de publicação:
2010
Tipo de documento:
Article