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Article: Radon mitigation in a typical underground car park in Hong Kong

TitleRadon mitigation in a typical underground car park in Hong Kong
Authors
Issue Date1997
PublisherOxford University Press. The Journal's web site is located at http://rpd.oxfordjournals.org/
Citation
Radiation Protection Dosimetry, 1997, v. 71 n. 4, p. 289-296 How to Cite?
AbstractExperiments were conducted to investigate the equivalent dose to the lung (lung dose) due to radon in an underground car park with four levels. Size distribution of aerosols and activity size distribution of radon progeny loaded aerosols from 9 nm to 10 μm were measured and their relations to car movement and emission were investigated. Unattached fraction, equilibrium factor and PAEC of radon progeny were monitored and were used to predict the lung dose by adopting the ICRP Human Respiratory Tract Model. The mean annual (i.e. 2000 h) lung doses at the four levels, B1, B2, B3 and B4 during daytime were 1.5, 2.4, 2.0 and 2.8 mSv respectively. The lung dose for each car park level at night were 2 times higher. Mitigation methods were investigated and it was found that increasing the ventilation rate only resulted in a few per cent reduction in the lung dose rate during daytime though a larger reduction in PAEC (50% at B1 and 38% at B4) was observed at night. Cleaning the fresh air filters and washing the car park floor with water also resulted in a 21% and 12% reduction in the lung dose rate respectively during daytime.
Persistent Identifierhttp://hdl.handle.net/10722/90465
ISSN
2015 Impact Factor: 0.894
2015 SCImago Journal Rankings: 0.456
References

 

DC FieldValueLanguage
dc.contributor.authorLeung, JKCen_HK
dc.contributor.authorTso, MYWen_HK
dc.contributor.authorHo, CWen_HK
dc.contributor.authorHung, LCen_HK
dc.date.accessioned2010-09-06T10:10:59Z-
dc.date.available2010-09-06T10:10:59Z-
dc.date.issued1997en_HK
dc.identifier.citationRadiation Protection Dosimetry, 1997, v. 71 n. 4, p. 289-296en_HK
dc.identifier.issn0144-8420en_HK
dc.identifier.urihttp://hdl.handle.net/10722/90465-
dc.description.abstractExperiments were conducted to investigate the equivalent dose to the lung (lung dose) due to radon in an underground car park with four levels. Size distribution of aerosols and activity size distribution of radon progeny loaded aerosols from 9 nm to 10 μm were measured and their relations to car movement and emission were investigated. Unattached fraction, equilibrium factor and PAEC of radon progeny were monitored and were used to predict the lung dose by adopting the ICRP Human Respiratory Tract Model. The mean annual (i.e. 2000 h) lung doses at the four levels, B1, B2, B3 and B4 during daytime were 1.5, 2.4, 2.0 and 2.8 mSv respectively. The lung dose for each car park level at night were 2 times higher. Mitigation methods were investigated and it was found that increasing the ventilation rate only resulted in a few per cent reduction in the lung dose rate during daytime though a larger reduction in PAEC (50% at B1 and 38% at B4) was observed at night. Cleaning the fresh air filters and washing the car park floor with water also resulted in a 21% and 12% reduction in the lung dose rate respectively during daytime.en_HK
dc.languageengen_HK
dc.publisherOxford University Press. The Journal's web site is located at http://rpd.oxfordjournals.org/en_HK
dc.relation.ispartofRadiation Protection Dosimetryen_HK
dc.rightsRadiation Protection Dosimetry. Copyright © Oxford University Press.en_HK
dc.titleRadon mitigation in a typical underground car park in Hong Kongen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0144-8420&volume=71&issue=4&spage=289&epage=296&date=1997&atitle=Radon+mitigation+in+a+typical+underground+car+park+in+Hong+Kongen_HK
dc.identifier.emailLeung, JKC: jkcleung@hku.hken_HK
dc.identifier.authorityLeung, JKC=rp00732en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.scopuseid_2-s2.0-0030822814en_HK
dc.identifier.hkuros25778en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0030822814&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume71en_HK
dc.identifier.issue4en_HK
dc.identifier.spage289en_HK
dc.identifier.epage296en_HK
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridLeung, JKC=24080627200en_HK
dc.identifier.scopusauthoridTso, MYW=7102052118en_HK
dc.identifier.scopusauthoridHo, CW=12804270500en_HK
dc.identifier.scopusauthoridHung, LC=21134688100en_HK

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