Radiation Protection Dosimetry Advance Access originally published online on August 24, 2005
Radiation Protection Dosimetry 2006 118(1):117-121; doi:10.1093/rpd/nci326
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TECHNICAL NOTE
Radon measurements in the caves of Zonguldak (Turkey)
k1
delen2
1 Department of Physics, Zonguldak Karaelmas University, 67100 Zonguldak, Turkey
2 Çekmece Nuclear Research and Training Centre, P.O. Box 1, Atatürk Airport, 34149
stanbul, Turkey
* Corresponding author: aytekin{at}karaelmas.edu.tr
Received May 18, 2005, amended June 16, 2005, accepted June 27, 2005
There are
20 caves of limestone origin in Zonguldak (Turkey). In this study, the results of atmospheric radon measurements performed for two caves are presented. These caves, Gökgöl and Cehennema
z
, are open to tourism. Gökgöl Cave is the longer, at nearly 3200 m in length. Cehenennema
z
is a pit-type cave with a total length of 85 m. The radon measurements were performed for 2 months between July 2004 and September 2004 using passive polycarbonate detectors. The mean radon concentrations were recorded as 1918.8 Bq m3 in Gökgöl Cave and 657 Bq m3 in Cehennema
z
Cave. The maximum value corresponds to a site located 400 m from the entrance of Gökgöl Cave. Mean effective dose values for tourists of 0.86 µSv per visit to Cehennema
z
Cave and 3.76 µSv to Gökgöl Cave were obtained. These results show that protection against radiological hazards would not be necessary for visitors to these two caves.