We have renovated, and used for four years, a small 3.4 m x 4.3 m conventional patient second floor hospital room to accommodate a low dose rate remote afterloading unit containing 13 GBq (0.35 Ci) of 137Cs.
Supplemental room shielding consists of a power assisted door (536 kg, 1.7 cm thickness of lead), 1.3 cm lead wall shielding at selected wall locations and on a projector shield beneath the bed, and 0.6 cm of lead over the floor above.
Radiation control features consisted of a room interior radiation detector independent of the remote afterloading unit, a redundant patient/nurse communication system, a remote control system, a door interlock system to insert and retract the radioactive pellets, and a visible and audible status indicator system located at a nearby nurses'work station.
Renovation costs (in 1990 dollars) were $383 per square foot ; total project costs were $187,000.
Nursing personnel radiation exposure was reduced from about 6 muSv (mg Ra eq) - 1 (0.6 mrem (mg Ra eq) - 1) to about 0.7 muSv (mg Ra eq) - 1 (0.07 mrem (mg Ra eq) - 1), almost a tenfold reduction.
Mots-clés Pascal : Exposition professionnelle, Sécurité, Dose faible, Equivalent dose, Hôpital, Blindage, Radioprotection
Mots-clés Pascal anglais : Occupational exposure, Safety, Low dose, Dose equivalent, Hospital, Shielding, Radioprotection
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 95-0501947
Code Inist : 002B30A02C. Création : 01/03/1996.