THE DESIGN AND CONSTRUCTION OF A LEAD SHIELDED CUBICLE FOR THE ANALYSIS OF βr ACTIVE MATERIALS

摘要

The modifications to four semi-shielded fume cupboards and a centrifuge alcove for the analysis of ΒΓ active materials in a typical laboratory, of building 220, is described. Three fume cupboards are used as the working area on highly active (up to 5 Mev curies) samples. One fume cupboard is fitted with a sliding access door and also used as a decontamination bay. The alcove is used for the unloading of samples from shielded transport containers and for transferring samples to a balance box by means of a light railway, A shielded box has been constructed containing a balance pan, the rest of the balance being unshielded for ease of access and maintenance.nAn electrically driven crane fitted with a manual lift has been incorporated into the design so that sources, apparatus and reagents can be taken in and out of the working area.nThe apparatus necessary to carry out a number of standard analytical technique is also described.