Naslov
BRZA METODA PROVJERE RADIOAKTIVNOG ONEČIŠĆENJA RADNE OKOLINE PRI RADU S OTVORENIM IZVORIMA ZRAČENJA
(FAST METHOD FOR THE ASSESSMENT OF OCCUPATIONAL RADIOACTIVE CONTAMINATION ORIGINATING FROM OPEN SOURCES OF RADIATION)

Autori
Justić, Mihaela ; Kosmina, Domagoj ; Mrčela, Iva ; Surić Mihić, Marija ; Šoštarić, Marko ; Prlić Ivica

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
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, 2015, 396-401

Skup
10. simpozij HRVATSKOG DRUŠTVA ZA ZAŠTITU OD ZRAČENJA

Mjesto i datum
Šibenik, Hrvatska, 15.04.2015. - 17.04.2015

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Domaća recenzija

Ključne riječi
radioaktivno onečišćenje; otvoreni izvori
(radioactive contamination; open sources)

Sažetak
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.

Izvorni jezik
Engleski

Znanstvena područja
Fizika, Javno zdravstvo i zdravstvena zaštita

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