Radiation Protection Bureau, Health Canada, 775 Brookfield Road, Ottawa, Ontario, Canada K1A1C1.
J Environ Radioact. 2011 Dec;102(12):1065-9. doi: 10.1016/j.jenvrad.2011.08.007. Epub 2011 Aug 26.
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.
加拿大卫生部辐射防护局设计和开发了一种大容量气溶胶采样器（“灰猫头鹰”）。其设计指南基于需要一种低成本、可靠的采样器，以提供可用于放射性研究参考样本的日常气溶胶监测样本。它的开发目的是在低压降下（每天采样约 3 kPa）提供恒定的空气流速，流量变化幅度小于满量程流量的±1%。对于超过 22000 立方米的标准空气进行过滤器采样，其能耗仅约为 1.5 kW。在卑诗省 Sidney 站的福岛核事故相关气溶胶放射性监测研究中，已经证明该采样器坚固可靠。新监测系统提供的结果已用于在加拿大应急响应期间支持决策。
