These instruments will record dose=increments as a function of time and the records will be processed to yield (a) dose rate from H hour to time of reboarding ship (maximum 100 hours) and (b) total dose during this period, (The instruments and processing equipment are described in Annex FE) The readings will give information on dose rate and dose to (1) the pilot while the aircraft is on deck, (2) the crewman in a typical deck location neer the aircraft, and (3) a background reading which will be subtracted from (2) to give the contribution of the eircraftto the crewman's radiation exposure, (See Tab C-l for detailed location plans and Tab C-2 for retrieving schedule and available results.) 3.2 Radiction In and Around Each Aircraft on Eniwetok With the aircraft on Eniwetok in a non-contamineatec area, instruments (1) and (2) in 3,1 above will be set into operation in identical orientation, Processed data from instrument (1) will yield information regarding radiation exposure to the pilot in flight (no radiation source other than the aircraft); data from instrument (2) will yield the crewman's radiction exposure from a contaminated aircreft situated on a non-contamineted surface, Tab Ce2 gives operating schedule end available results, 3.3 Effectiveness of Washdown System in Decontaminsting Aboard Shir Aireraft To determine how effective the weshdowm system hes been a number of studies will be conducted: 3.3.1 Overeall Monitoring of Airersft Aboard Shin Before the aircraft are moved, o spotecheck monitoring, according to a predetermined plan, will be conducted aboard each ship. This monitoring will be conducted to obtein information rogerding the redistion field eround the aircraft. (See Tab C-3 for monitoring plans and available results.) The two sets of readings (ABLE vs, BAKER) will be compared and any difference will be assigned as ao decrease due to washdown, unless known extraneous factors interfere, 3.3.2 Distribution Studies ST, LOYUIS2+FRC The distribution of contemination over the surface of each aircraft will be measured both by beta instruments and directional gamma instruments after the airplane has been moved to the beach and before any additional decontemination opcrations ere begun, This will be an indication of (1) possible proferential washing ection by the veshdown system as installed (ABLE plane); (2) possible selective retention of contaminant by verious locales on the aireraft surfcce, and will indicets either a need for relocation of the aircreft washdown system, 4 63