FAST METHOD FOR THE ASSESSMENT OF OCCUPATIONAL RADIOACTIVE CONTAMINATION ORIGINATING FROM OPEN SOURCES OF RADIATION (CROSBI ID 626297)
Prilog sa skupa u zborniku | izvorni znanstveni rad | domaća recenzija
Podaci o odgovornosti
Justić, Mihaela ; Kosmina, Domagoj ; Mrčela, Iva ; Surić Mihić, Marija ; Šoštarić, Marko ; Prlić Ivica
engleski
FAST METHOD FOR THE ASSESSMENT OF OCCUPATIONAL RADIOACTIVE CONTAMINATION ORIGINATING FROM OPEN SOURCES OF RADIATION
While handling open radioactive sources, contamination of the occupational environment can occur due to accidents or improper handling. After work with open radiation sources it is necessary to check for radioactive contamination in the occupational environment. This paper presents a method for the fast assessment of radioactive contamination using a survey meter. Measurements were conducted in occupational environments with higher possibility of radioactive contamination, at the nuclear medicine departments of three Croatian hospitals. The measurements were performed above work benches where contaminated area was marked by adhesive tape. The H*(10) rate measurements were performed with a survey meter Thermo Eberline FH 40 GL-10 and a mobile gammaspectrum identifier Mirion Technologies SpiR-ID. After H*(10) rate measurements, a swipe test was performed on the contaminated area using dry cotton pads. Swipe test analysis was conducted using high resolution gammaspectroscopy which yielded the type and activity of radionuclides picked up with cotton pads. Where radioactive contamination was measurable, gammaspectroscopic analysis determined that the predominant cause was radionuclide 99m Tc. The linear dependence between the ambient dose rate and surface concentrations of radioactive contamination was confirmed by calculating correlation coefficients. This linear dependence enabled us to determine the ambient equivalent dose rate limits that correspond to the radioactive surface contamination limits.
radioactive contamination; open sources
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Podaci o prilogu
396-401.
2015.
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objavljeno
Podaci o matičnoj publikaciji
Zbornik radova 10. simpozija HRVATSKOG DRUŠTVA ZA ZAŠTITU OD ZRAČENJA
Petrinec, Branko ; Bituh, Tomislav ; Milić, Mirta ; Kopjar, Nevenka
Zagreb: Hrvatsko društvo za zaštitu od zračenja
1849-5060
Podaci o skupu
10. simpozij HRVATSKOG DRUŠTVA ZA ZAŠTITU OD ZRAČENJA
predavanje
15.04.2015-17.04.2015
Šibenik, Hrvatska