snee ae ecio®® 0 790-" OPERATIONSORDERNO.5.54 PRE-SHOT SAFETYPRECAUTIONS HEADQUARTERS TASK GROUP 7.4, PROVISIONAL APO 187, c/o Postmaster 7° April 1954, 1S00M 1, EFERENCES: a. Annex A, JIF SEVEN Operations Order No, 3-53. b. Special Bulletin, JTF SEVEN, Subject: dated 15 February 1954. c. 2. "Safety Instructions", ENIWETOK Building Layout, 1" = 400', GENERAL SITUATION: ‘a. This plan is applicable to all personnel of Task Group 7,4 located on ENIWETOK ISLAND, b. This plan governs preparation for the safety of personnel and equipment at H.-Hour and until the actual detonation plus fifteen (15) minutes. c. No evacuation of Task Group 7.4 personnel from ENIWETOK will be conducted in preparation for a local detonation, Evacuation which may become necessary because of post-mission radioactivity is covered in Task Group 7.4 Operation Plan No, 1-54. Actions to be taken in the event of high wind or natural disaster are covered in Task Group 7.4 Operations Plan No, 2-54, d. Security of aircraft, equipment, vehicles, materiel and organizational areas is a responsibility of owning and/or using or controlling agencies. e. A nuclear detonation will take place in the ENIWETOK at a specified time and location to be announced, It is possible the shot may be delayed or rescheduled for another day. However, safety instructions contained herein will apply regardless of the firing, ATOLL that the exact f£, Possible hazards which must be considered in conjunction with detonations in the local area include: Intense light, heat, blast, high winds, flying debris and minor water wave effects. Of these phenomena which will occur at time of burst, only intense light will constitute a hazard to personnel, However, the intense light is a serious hazard only to personnel who look in the direction of the burst during and immediately following H-Hour., Only sites RUBY and FLORA will be used for tests in the ENIWETOK area, 3. MISSION: a. Insure that necessary precautions are taken to safeguard personnel and equipment, including aircraft from the effects of nuclear detonations which are conducted in the ENIWETOK area, TASK GROUP 7.4 OPRS ORDER NO. 5-54 ANNEX Z