Deciossified pop DIR 5200.10 NOTE: In air for any twent y-four(24) hour period after a shot, 1074 uc/ee of which particles less than five (5) microns shall not exceed 107° 12. uc/cc. All radiological safety operations for Operation CASTLE (RESTRICTED . SI), will be cosidered as routine and will comply with permissible radiological exposures for routine work, except "special operations" which must be specifically designated by Comer, JTF ‘. In tactical situations the military commander must make the decision regarding allowable exposures. As military personnel are normally subject to only random exposures, health hazards are at a minimum. Current DOD information on exposure to ganma radiation in tactical situations is indicated below: % a. Uniform acute (inmediate) exposure of fifty (50) roentgens to b. Uniform acute exposure of one hyngred (100) roentgens wil a group of Armed Forces personnel will not appreciably affect their efficiency as a fighting unit. produce in occasional individuals nausea and vomiting, but not to an extent that will render Armed Forces personnel ineffective as fighting units. Personnel receiving an acute radiation exposure of one hundred (100) or more roentgens should be given a period of rest and individual evaluation as soon as possible. c. Uniform acute exposure of approximately one hundred fifty (150) roentgens or greater can be expected to render Armed Forces personnel ineffective as troops within a few hours through a substantial incidence nausea, vomiting, weakness and prostration. Mortality produced by an acute exposure of one hundred fifty (150) roentgens will be very low and eventual recovery of physical fitness may be expected. d. Field Commanders should, therefore, assume that if sub- e. Internal radiation hazards caused by entry of radioactive stantial numbers of their men receive acute radiation exposures substantially above one hundred (100) roentgens there is a grave risk that their commands will rapidly become ineffective as fighting units. substances through the mouth, through the lungs or through cuts or wounds do: . exist after an air burst. Internal hazards following a contaminating surface explosion may be avoided if ordinary precautions are taken. Only under unusual circumstances will there be internal hazard from residual contamination. This eliminates the necessity for masking and consequent reduction of tactical efficiency. 13. This appendix has been designed for reduced security classification in order to facilitate wide dissemination. TASK GROUP 7.4 OPRS ORDER NO. 1-53 ANNEX H, APNDX 2 xo pp Declessified DOD DIR 5200.18