HEADQUARTERS, Joint Task Ferce SEVEN Washington 25, D. C. 10 November 1953 Appendix IT to Annex N Radiological Safety, CJTF SEVEN Operation Plan No. 3-53 RADIOLOGICAL SAFETY OFFICE AND CENTER 1. A JTP SEVEN radiological safety office (RadSafe Office) and a TG 7.1 radiological safety center (RadSafe Center) will be established for each shot. The RadSafe Office, manned by personnel of the Technical Branch of the task force Operations Division (J-3), will operate as whe task force staff agency responsible for the dissemination of task ‘orce radiclogical directives, the presentation of radiological shot briefing material and the maintenance of displays of radiological information having an impact on the overall task force mission. The RadSafe Genter will be established by CTG 7.1 and will serve as operavicns headquarters for the radiological safety activities of TG Toi. Fertinent data collected at the RadSafe Center will be forwarded to the RadSafe Office at the task force command post. Detailed Duties a. RadSafe Office (1) The RadSafe Office, in coordination with CTG 7.4 who will develop the air RADEX plot, will assemble the overall RADEX situation and disseminate the air and surface RADEX prior to shot time (forecast.) and will originate messages from time to time after shot time announcing R (Reentry) Hour, radiological clearances of previously closed areas, radiological directives to task groups, advisories to commands external to the task force and revisions of the air and surface RADEX as required. (2) The RadSafe Office will be responsible for the preparation of RadSafe forecast information for the shot briefings. (3) The RadSafe Office will maintain displays of radiological information pertinent to the test area and having an impact outside this area to include radiation levels on atoll islands and lagoon, RADEX information, cloud trajectories and their relation to occupied atolls and air and surface routes contiguous to the danger area, ship movements in the danger area, results of water sampling and such other items of special radiological consideration as may be required by the operation or the scientific projects. (4) Physical Lecations of RadSafe Office a. For BIKINI ATOLL shots: b. For ENIWETOK ATOLL shots: Command ship Operations Division (J-3), JTF SEVEN Headquarters building, PARRY ISLAND. b. RadSafe Center (1) The RadSafe Center will maintain radiological situation data on lagoon waters and islands of the shot atoll, based on air and ground survey information, supplemented by monitor reports. This information will be the basis of periodic situation reports or maps and briefing information furnished to the task force and task group commanders, N-II-1