Sealing arrangement for service lines to radioactive enclosure - with door device which prevents escape of radioactivity when service plug is removed

摘要

One or more service lines are introduced into a radioactive enclosure by an arrangement in which the lines pass through a removable portion of the enclosure. A door is provided which cooperates with the removable portion so that its removal does not result in escape of radioactivity from the enclosure. The arrangement may be used in a biological shield or with a glove box, for providing water or electric power. A double door device can be used so that one door can seal the enclosure and the other can cover the part of the removable portion exposed to radiation.