qe 1.3.2 To provide detailed information on the operational and logistical requirements on Project 6.le. 1.4 Enemy Forces Same se in basic plan 1.5 Friendly Forces 1.5.1 Same as in basic plan. 1.5.2 Team C will be provided by and under control of Project 6.lb. 1.5.3 Development, provision, and maintenance of gamma-time in- 1.5.44 Basic information on physical and chemical nature of con- tensity instruments will be accomplished by Project 6.hf. taminant will be available from Program 2, Project 2.5. 1.6 Assumptions and Limitations 1.6.1 Same as in basic plan. 1.6.2 Contamination of interior compartments of ships beyond the region of immobilization from underwater atomic attack may present a personnel hazard of military significance. 1.6.3 Major avenues of ingress of contamination are the venti-_ 1.6.4 The total hazard to personnel in interior compartments lation and combustion-air systems. is caused by gamma radiation through bulkheads and decks, by active deposits on surfaces of compartments and ductwork, and by active material contained in the air. These factors can be measured independently. 1.6.5 Areas of interest in this investigation are firerooms, boilers, boiler air ducts, ventilation ducts, and ventilation compartments. 1.6.6 Information gained from observations of the boiler, 1.6.7 Information gained from observations of limited numbers boiler-air ducts, and firerooms on the test ships can be usefully applied or extrapolated to boiler systems in various naval vessels of interest. of typical ventilation systems and devices can be usefully applied or extrapolated to ventilation systems in various naval vessels of interest. 2. Mission 2.1 , ST. LOUIS FRC To obtain information necessary to determine the radiological hazards in interior compartments at various times after burst as a result of externel radiation from airborne and deposited activity in spaces and ducting. 2 Es F/