5 research outputs found
Calibration factor fluctuations for radiological protection instruments used in Nuclear Medicine Departments - experience from CLOR
BACKGROUND
The calibration of the dosimetric instruments is a basis of safety of the people working with the ionization radiation. The necessity of calibration is especially important in the institutions where the open radioactive sources are used. The paper presents the abilities of CLOR’s radiological protection instruments calibration facility and the important conclusions from calibrations results for group of instruments used in Nuclear Medicine Department in Poland.
MATERIALS AND METHODS
The results for five types of instruments dedicated for dose rate as well as for contamination measurements were presented. Analyzes were based on the results presented at calibration certificated of chosen instruments.
RESULTS
It has been shown that the calibration factor might fluctuate by 50% in period of one year for particular instrument as well as for more than 100% for two instruments of the same type.
CONCLUSIONS
The presented results prove the importance of the calibration process and it is evidence that the calibration process of the radiation protection instruments should be performed periodically for the test of dose rate measurements as well as for contamination measurements abilities.The paper presents the capabilities of CLOR’s facility for calibrating radiological protection instruments and the important conclusions drawn from the results of calibrating instruments used in Nuclear Medicine Departments in Poland. The analysis was based on results of the certified calibration of chosen instruments. The result for five types of instruments dedicated for dose rate and contamination measurements were presented. They prove the importance of the calibration process. They show that the calibration factor for one particular instrument may fluctuate by 50% in a one year period as well as by more than 100% for two instruments of the same type
Changes in Polish law related to the implementation of COUNCIL DIRECTIVE 2013/59/EURATOM of 5 December 2013
Radon is an invisible, naturally occurring radioactive noble gas. According to the WHO report, it is the most important cause of lung cancer after smoking [1]. Recent epidemiological studies show that a statistically significant increase in the risk of lung cancer already occurs as a result of prolonged exposure to radon inside rooms where the concentration is at 100 Bq/m3 and increases by 16% per 100 Bq/m3 increase (considering a prolonged exposure period). For this reason, the Council Directive 2013/59/Euratom (BSS) [2] establishing the basic safety standards for the protection against the hazards related to ionizing radiation, that was passed in 2013, pays particular attention to issues related to radon exposure. BSS reduce radon concentration limits in workplaces to 300 Bq/m3. According to the regulations in force, the BSS must be implemented in the Polish Atomic Law no later than 6th February 2018
National comparison of methods for determination of radon in water
The article describes three interlaboratory experiments concerning 222Rn determination in water samples.
The fi rst two experiments were carried out with the use of artifi cial radon waters prepared by the Laboratory
of Radiometric Expertise (LER), Institute of Nuclear Physics, Polish Academy of Sciences in Kraków in 2014
and 2018. The third experiment was performed using natural environment waters collected in the vicinity of the
former uranium mine in Kowary in 2016. Most of the institutions performing radon in water measurements in
Poland were gathered in the Polish Radon Centre Network, and they participated in the experiments. The goal of
these exercises was to evaluate different measurement techniques used routinely in Polish laboratories and the
laboratories’ profi ciency of radon in water measurements. In the experiment performed in 2018, the reference
values of 222Rn concentration in water were calculated based on the method developed at LER. The participants’
results appeared to be worse for low radon concentration than for high radon concentrations. The conclusions
drawn on that base indicated the weaknesses of the used methods and probably the sampling. The interlaboratory
experiments, in term, can help to improve the participants’ skills and reliability of their results
Changes in Polish law related to the implementation of COUNCIL DIRECTIVE 2013/59/EURATOM of 5 December 2013
Radon is an invisible, naturally occurring radioactive noble gas. According to the WHO report, it is the most important cause of lung cancer after smoking [1]. Recent epidemiological studies show that a statistically significant increase in the risk of lung cancer already occurs as a result of prolonged exposure to radon inside rooms where the concentration is at 100 Bq/m3 and increases by 16% per 100 Bq/m3 increase (considering a prolonged exposure period). For this reason, the Council Directive 2013/59/Euratom (BSS) [2] establishing the basic safety standards for the protection against the hazards related to ionizing radiation, that was passed in 2013, pays particular attention to issues related to radon exposure. BSS reduce radon concentration limits in workplaces to 300 Bq/m3. According to the regulations in force, the BSS must be implemented in the Polish Atomic Law no later than 6th February 2018
Changes in Polish law related to the implementation of COUNCIL DIRECTIVE 2013/59/EURATOM of 5 December 2013
Radon is an invisible, naturally occurring radioactive noble gas. According to the WHO report, it is the most important cause of lung cancer after smoking [1]. Recent epidemiological studies show that a statistically significant increase in the risk of lung cancer already occurs as a result of prolonged exposure to radon inside rooms where the concentration is at 100 Bq/m3 and increases by 16% per 100 Bq/m3 increase (considering a prolonged exposure period). For this reason, the Council Directive 2013/59/Euratom (BSS) [2] establishing the basic safety standards for the protection against the hazards related to ionizing radiation, that was passed in 2013, pays particular attention to issues related to radon exposure. BSS reduce radon concentration limits in workplaces to 300 Bq/m3. According to the regulations in force, the BSS must be implemented in the Polish Atomic Law no later than 6th February 2018