VentTlation Equipment This test was performed on several types and sizes of pressure sensitive and remotely operated anti~blast valves for ventilation openings. To prevent injury to occupants and damage to filters and other shelter equipment, blast resistant closures must be provided for all ventilation openings. Research and ‘ development on this project has been done under contract by Arthur D, Little, Inc, A total of eleven prototype valves were tested to obtain designs for rugged, reliable and quick acting blast valves of various sizes and overpressure ratings. Radiological Defense One program in the radiological field is designed to give the technical data necessary for the formulation of specifications for radiological instruments, establishing nuclear radiation shielding requirements, decontamination procedures and radiological monitoring techniques. A second program is designed to obtain information necessary for the formulation of radiological defense operations, techniques and philosophy. It also provides training ina contaminated field for state and local personnel. The decontamination program is to evaluate the effectiveness and feasibility of various methods of decontaminating structures and areas, Methods used include flushing, covering, removal of earth, sweeping, etc. This project also serves to demonstrate and train personnel in decontamination procedures and countermeasures. Monitoring Techniques Objectives of this project are: (1) To obtain further experience for the purpose of evaluation of aerial, automotive, and ground monitoring surveys. ~" (2) To evaluate attenuation factors for mobile survey methods. (3) To evaluate aerial equipment being developed for civil defense use, . at (4) To obtain information on radiation exposures associated with such surveys, Evaluation of Instruments This is a continuing program designed to evaluate radiation detection instruments under field conditions. Both standard FCDA and other commercial instrunents are being tested. Radiation instrument manufacturers are participating in this project. , ily u - 71 - | /j \2