RESUMEN
Monte Carlo computer simulation of beta radiation transport within radioactively-contaminated food samples was studied and compared with experimental results. We used the Monte Carlo code PENELOPE-2008. The basic geometry of a hand-held contamination monitor and the geometry of beta-emitting food samples and surface sources were modeled, and the detection efficiency of the device was determined. Possibilities to improve the detection efficiency were tested by simulation.
RESUMEN
We present Monte Carlo simulations of the gamma exposure in closed rooms made of steel or concrete and contaminated by 6°Co or NORM radionuclides. The computer code PENELOPE-2008 (Salvat et al., 2009) was used. Our simulations for 6°Co suggest considering detailed Monte Carlo simulations in future recommendations on clearance and exemption of materials with low radioactivity. For NORM nuclides our calculations suggest that Monte Carlo simulations are a possible alternative in case a material fails the dose rate criteria by using the RP 112 screening method.
