200316 ⎘
Arrangements for treating, for handling, or for facilitating the handling of, fuel or other materials which are used within the reactor, e.g. within its pressure vessel; Arrangements for introducing objects into the pressure vessel; Arrangements for handling objects within the pressure vessel; Arrangements for removing objects from the pressure vessel; Arrangements for obtaining access to the interior of a pressure vessel whilst the reactor is operating by using an auxiliary vessel which is temporarily sealed to the pressure vessel