The measurement of 60Co contaminated rebar buildings with thermoluminescence dosemeters.
Three contaminated housing units, yielding annual dose levels of 6, 22 and 57 mSv, were selected randomly from identified radiation contaminated buildings (RCBs) to perform this experiment. The results are presented of a study to investigate the probability of finding RCBs by using eight thermoluminescence dosemeters (TLDs) for each suspected radiation contaminated housing unit. The results revealed that, for these three housing units, the probabilities of detecting contaminated housing units using eight TLDs were 93%, 86% and 99%, respectively. The number of TLDs required for such a determination depended strongly on both the radiation contaminated level (i.e., the activity) in the housing unit and the distribution of contaminated columns and beams in the house.
Chen
W L
WL
Department of Medical Radiation Technology, National Yang-Ming University, 155, Li-Nong St. Sec. 2, Pei-tou, Taipei 112, Taiwan, ROC. wlchen@ym.edu.tw
Yeh
S H
SH
D016902:Air Pollution, Indoor / Q000032:analysis*; D003037:Cobalt Radioisotopes / Q000032:analysis*; D003252:Construction Materials / Q000032:analysis*; D004784:Environmental Monitoring / Q000379:methods; D005160:Facility Design and Construction; D006798:Housing; D015233:Models, Statistical; D011829:Radiation Dosage; D011835:Radiation Protection / Q000379:methods; D018570:Risk Assessment / Q000379:methods*; D013624:Taiwan; D013819:Thermoluminescent Dosimetry / Q000295:instrumentation / Q000379:methods* / Q000592:standards
D003037:Cobalt Radioisotopes