Danger of the improvisation in the services of radiology

A preliminary evaluation of the safety conditions and of the radiological protection procedures in some X-rays rooms at the Radiodiagnostic Service of the HUCFF was performed. This evaluation was carried through the radiometric survey of the rooms, using an ion chamber of ionization Victoreen 450 P, calibrated for radiodiagnostic and a water phantom of 25 x 35 cm. The results showed that in the places shielded by proper barriers, the dose rates were in accordance with international recommendations and Norm CNEN 3.01. In the rooms where mobile shielding were placed, presented dose rates above the acceptable limits being critical in small rooms. Very often the improvisations are made without communication to the technical department. Periodic radiometric surveys help in the detection of situations. (author)