Mee ° CAE: peeeai’ = Radiological Safety Regulatiois CJTF SEVEN No 3-$3 : calcuieting allowable exposures under both tactical and operational cond, tions, (S) All persons in aircraft at shot time or at subsequent times when engaged in cperations in or near the cloud or RADEX track shall wear film badges. (6) Crew members cf aircraft in the alr at zero hour will take special precautions to avoid (for at Least 10 seconds) the direct and reflected iignt resulting from the burst. At the discretion of the airplane commander this cculd be done with protective high den- sits goggles, by turning away from the burst’ with eyes closed, oy sovering the eyes with the forearm, by turning cockpit lights up to highest intensity cr by any combination of the above e, In sir and water the following continuous levels of radioactivity are considered safe from the standpoint of personne: drinking and breathing ‘uc microecurie): Water Beta Gama Em:‘ter x 1073 uc/eo Cealculated to H / 2 days) Air (2, hour average) ‘6 Particles less than 5 micron diameter 107 uc/ee Part.cles greater then § micron diameter 10-4 32/ec 18. In tactical situations the military commander must make the decision regarding allowable exposures. As military persenne) are normally subject to only randum ecocsure, health haztards are a2 a minimun, Current Department of Defense information on exposure *o gamma radi- ation in tactical situations ta indicated below: a. Uniform acute (immediate) expesure of 50 roentgens to a group of Armed Forces personne? will not appreciably affect their efficiency as a fighting unit. b. Uniform acute exposure of 100 roentgens will produce in occasional individuals nausea and vomting but now to an extent that will render Armed Forces personne! ineffective as fiazhting urits, Personnel receiving an asut9 radiation exposure of LOor mere roentgens should be given a period of rest and indivadual evaluation as soon as possible. e. Uniform acute exposure of approximately 150 roen‘gens or greater can be expected to render Armed Forces personnel ineffective as troops within a few hours through a substantial ancadence of nausea, vomiting, weakness and prostration. Mortality rroduced by an acute exposure of 150 roentgens will be very low and eventual recovery of physical fitness may be expected. a. Field commands should, therefore, assume tnat if substantial numbers of their men receive acute radiation eryzesures substantially above 100 roentgens there is a grave risk that their commands will rapidly become ineffective as fighting units. e. Internal radiation hazards caused by entry cf radioactive substances through the mouth, through the lungs or through cuts or wounde do not exist after an air burst. Internal hazards following & contaminating surface explosion may be avoided af ordinary