EVALUATION OF MILITARY RADIAC EQUIPMENT,

Two production type and several experimental type survey meters were evaluated. The ANPDR-32 XN-3 service test model and the IM-71PD prototype model were subjected to similar field tests. Certain basic problems existed with each. The ANPDR-32 gave unreliable readings at rates above 300 rhr, due to sporadic effects, and the IM-71 was unreliable due to its annoying drift and inability to be reset in high radiation fields. The recommendations contained herein should be effected prior to the approval of either equipment for service use. A number of dosimeters of various types were tested, both of a tactical and administrative nature. Among the tactical dosimeters tested on this project, the DT-65 showed the most promise. However, if some difficulties with rate dependence and pressure sensitivity are rectified in the IM-91, this instrument would have first preference. Administrative type dosimeter DT-60 fulfills the requirements for a dosimeter of this type. The E-1 Tactical, Tracerlab Tactical and the Consolidated Vacuum dosimeters were tested under Project 6.4 and reported on in WT-753. In view of limited data contained in this report concerning dosimeter accuracy in residual fields, it is recommended that future dosimeter evaluation programs include a comprehensive analysis of dosimeter response to residual radiation. Author