Gutierrez-Villanueva J L, Sainz-Fernández C, Fuente-Merino I, Sáez-Vergara J C, Correa-Garcés E, Quindos-Poncela L S
RADON Group, Faculty of Medicine, University of Cantabria, Avda Cardenal Herrera Oria s/n, Santander 39011, Spain.
Radiat Prot Dosimetry. 2013 Aug;155(4):459-66. doi: 10.1093/rpd/nct016. Epub 2013 Feb 14.
The last nuclear accident in Fukushima nuclear power plant has increased the necessity for measuring radiation in the environment. Therefore, radiation monitors providing results traceable throughout the country become essential and it is very important to test them under the same environmental conditions. The first intercomparison of natural radioactivity under field conditions was held in Saelices el Chico (Salamanca, Spain) in May 2011, including an exercise on environmental dose rate. This article presents the results achieved by 19 instruments belonging to 12 institutions from 7 different countries. The tested detectors are proportional counters, ionisation chambers, Geiger-Müller and scintillators measuring dose rate in three stations with reference values from 110 to 1800 nGy h(-1). All the results were given in terms of air kerma (nGy h(-1)) and the measurements show agreement within 25 % in all the sites. Evaluation criteria based on accuracy and statistical uncertainty were also carried out and 25 % of participants passed the test in all sites.
福岛核电站的上一次核事故增加了测量环境辐射的必要性。因此，提供可在全国范围内溯源结果的辐射监测器变得至关重要，并且在相同环境条件下对其进行测试非常重要。2011年5月在西班牙萨拉曼卡的塞利塞斯埃尔奇科举行了首次野外条件下天然放射性的比对，其中包括一次环境剂量率演练。本文介绍了来自7个不同国家12个机构的19台仪器所取得的结果。所测试的探测器有正比计数器、电离室、盖革 - 米勒计数器和闪烁体，它们在三个测量站测量剂量率，参考值为110至1800 nGy h⁻¹。所有结果均以空气比释动能（nGy h⁻¹）表示，测量结果显示在所有站点的误差在25%以内。还基于准确性和统计不确定性进行了评估标准，25%的参与者在所有站点通过了测试。
