Control of radiation sources in opened facilities of industrial radiography

This work had the objectives to analyze the open facilities or mobile industrial radiography to obtain the distribution of doses in the radiographers, to evaluate the radioprotection conditions and the operational procedures, besides to present proposed for the reference levels and to estimate the potential exposure. The results of the additional monitoring revealed an improvement of the radiation protection conditions in the open facilities and the risk of potential exposure was reduced. With relationship to the radiation protection procedures, the accompaniment of the radiographic testing verified that most of the problems was solved. The advantage of the proposed reference levels is that the supervisors would enlarge the frequency of audits to accomplish the investigations and interventions. The mobile industrial radiography with bunkers presented distributions with 95% of the doses below 0.2 mSv and the distributions of the facilities with cordoned area they had 75% of the doses below 0.4 mSv. The distribution of radiographers dose presented log-normal tendency