title: Development of a new aerosol monitoring system and its application in Fukushima nuclear accident related aerosol radioactivity measurement at the CTBT radionuclide station in Sidney of Canada.
abstract: A high volume aerosol sampler ("Grey Owl") has been designed and developed at the Radiation Protection Bureau, Health Canada. Its design guidance is based on the need for a low operational cost and reliable sampler to provide daily aerosol monitoring samples that can be used as reference samples for radiological studies. It has been developed to provide a constant air flow rate at low pressure drops (∼3 kPa for a day sampling) with variations of less than ±1% of the full scale flow rate. Its energy consumption is only about 1.5 kW for a filter sampling over 22,000 standard cubic meter of air. It has been demonstrated in this Fukushima nuclear accident related aerosol radioactivity monitoring study at Sidney station, B.C. that the sampler is robust and reliable. The results provided by the new monitoring system have been used to support decision-making in Canada during an emergency response.
authors.affiliation: Radiation Protection Bureau, Health Canada, 775 Brookfield Road, Ottawa, Ontario, Canada K1A1C1. weihua.zhang@hc-sc.gc.ca
authors.forename: Weihua
authors.initials: W
authors.lastname: Zhang
authors.forename: Marc
authors.initials: M
authors.lastname: Bean
authors.forename: Mike
authors.initials: M
authors.lastname: Benotto
authors.forename: Jeff
authors.initials: J
authors.lastname: Cheung
authors.forename: Kurt
authors.initials: K
authors.lastname: Ungar
authors.forename: Brian
authors.initials: B
authors.lastname: Ahier
mesh_terms: D000336:Aerosols / Q000032:analysis* / Q000737:chemistry; D000396:Air Pollutants, Radioactive / Q000032:analysis* / Q000737:chemistry; D001955:British Columbia; D004190:Disasters; D007564:Japan; D011834:Radiation Monitoring / Q000295:instrumentation / Q000379:methods*; D018788:Radioactive Hazard Release
chemical_list: D000336:Aerosols; D000396:Air Pollutants, Radioactive