w mohRADSAPE (Seo Charte 1 & 2) 1. HeadquartersOtganizton: During the planning stage of CASTLE, staff work required to set up the necessary services and procedures tc cope with the Radsafe problems was well within the capability of one officer and one clerk stenographer. However, once the shot phase of the cperation started, the work-load became considerably greater. a. In particular, the requirement existed for a Radsafe officer, completely conversant with the entire Radsafe plan of action, and with the developing Weather and Radsafe situation for the shot, to be on duty from about H minus 24 hours to approximately H plus 24 houre. It was during this period that the crucial Radsafe work had to be done. Prior to the shot, a succession of commnd briefings (at least 4) required a considerable amowmt of preparation of briefing displays for wind patterns, fall-out plots and transient shipping information. ‘Along with the briefings, a string of advisories and directives were required to go cut to various agencies doth axternal and internal to the task force, some of whiah occasionally required revision in accordance with significant changes in the wind forecast. After the shot, the problem became one of recomnaissance to determine the closeAnswers had to be obtained relative to in and long-range fall-out aspects. the safety of task force ships; the problem of aerial contamination drifting toward SWIWETOK and UJELANG Atolls required early evaluation; winds aloft observations had to be plotted and continually analysed together with both observed and forecast fall-out information; constant checks were required on the cloud sampling operation to assure the conduct of these operations in accordance with reasonable radsafe precautions; advisories again were required to inform internal and external agencies of critical developments; BB