GREEeee) Project 2.4 - Decontamination and Protection - J. C. Maloney OBJECTIVES To study the contamination of various types of building surfaces exposed at various orientations to the fallout. To study the effectiveness of various decontamination procelures, and thus obtain data on the radiological recovery of military installations constructed from the tested types of material. INSTRUMUNTATION Panels of the various types of building materials were mounted on a structure so as to present various orientations to the fallout. ., The structures were mounted on the forward portion of YAG 39 and YAG : 49. Evaluation was to be carried out at Parry, where various decon~ tamination methods were to be used on the panels. The effectiveness of decontamination was to be assessed by survey and some reziochemical ‘) ani radio physical investigations ef the ranels and dec ntamination WASLES, ~ 2 sie ¥ Due to insufficient contamination from veMME (FLATHEAD), it was decided to leave the panel assembly on the YAG-39. On the YAG-40, only the panels on the front face reccived enough contamination to warrant experimentation, Due to the difficulty in manipulating the canvas covers protecting the panels on the two structures, it was decided to forego the pre- and post-shot surface covering. Due to the apparent low decontamination efficiency of low and high pressure water hosing, it was decided to forego these techniques. lean > CSPIEU/COE ‘ LAN BC -19- i \ L