DECONTAMINATION MACHINE FOR DECONTAMINATING NUCLEAR STEAM GENERATOR CHANNEL HEADS

摘要

A decontamination machine comprises a first assembly including a vertical post (12) and a carriage track (13) with a movable carriage (14) thereon, the carriage track (13) being pivotally secured to the upper end portion of the post (12) so that the assembly can be collapsed to a size permitting entry into the channel head (1) through a manway (6), with the assembly being sufficiently light in weight to permit its installation in the channel head (1) by no more than two individuals. The machine includes a horizontal support beam (20) and a curved track (23) which are separably secured to the vertical post (12) and to the outer end of the carriage track (13) so that a generally quadrantally shaped frame is provided. The carriage track (13) carries an adjustable decontamination blaster means (26). Means are provided for moving the carriage along the carriage track (13) and for swinging the carriage track (13) both horizontally and vertically in the frame so that the decontamination means (26) has the capability of sweeping past substantially all of the interiorly facing walls in the channel head (1).
Decontamination by remote operation becomes possible with this machine.