D ne w vest suit the local conditions. However, barge support ahould be closely operations, Future operations may well look to the barge method as asetul pins assembly and delivery operations in a consolidated installation. 4.5 So Neen “ wren TASK UNIT 6, FIRING PARTY TU-6 had the responsibility for arming and firing the nuclear devices Getorated operation. In general, two teams were utilized for the operation: one was the armingwo t. which made test checks of the X units and firing racks prior to the final assembly of ~~ vices and the inspection and test checks of the firing circuitry involved, including the neon testing of the Go-No-Go interlock circuits; the other was the firing team, which Operanee control equipment used for this purpose. The work of TU-6 was accomplished ia close } “ with TU-4 (assembly for LASL devices), TU-14 (assembly for UCRL devices), and Ds" (EG&G signal and firing circuits). The missions of the arming and firing teams Were accup. plished with the aid of detailed check lists which enumerated each operation and the Choearey measurements associated with the arming and firing of each of the nuclear devices. Tie re plan of operations used by TU-6 is given separately in the TU-6 Operations Plan. The original plans provided for firing the various devices from land-based control sy. ‘tions located on Enyu Island, Bikini Atoll, and Parry Island, Entwetok Atoll, from which wire electrical circuits originated. These circuits terminated at the various zero points. The fire detonatio Sicaion.:.: which the firing was accomplished by mamually opery. ting the control board at Station 70,Enyu Island. However, immediately following this shot 1 was decided to fire the remaining devices at Bikini Atoll from aboard the command ship, the USS Estes means of a radio link from the ship to Station 70. The final shot of the Castie as fired from the Control Room on Parry Island. This was the only detons. tion of the series made at Eniwetok Atoll. . During Operation Castle no misfires or other delays were encountered which were due te the arming or firing operations. Weather difficulties did interfere with the firing schedule, however, and these delays necessitated arming and disarming all but two of the devices more than once. 46 TASK UNIT 7, RADIOLOGICAL SAFETY 4.6.1 Introduction TU-7, the Rad-Safe unit for TG 7.1, was a continuation of the Rad-Safe Unit of TG 132.1, Preliminary to the Castle operational phases, personnel to staff the unit were requested from the Army, Navy, and Air Force. The Army furnished $4 persona, and the Navy furnished 11, Civilian technical advisers of Health Division, LASL, and the U. 8. Public Health Service added to the unit just prior to and during the overseas period. b 4 | 4.6.2 Task Group Organization for Radiation Safety Early concepts for Castle indicated a high requirement for radiation-safety monitors. In past operations these monitors were furnished from personnel of the Rad-Safe Task Unit. The continuation of this policy would have meant a large unwieldy organization and an expensive service. An alternative was proposed and accepted by the Task Group Commander, This alternative was to place radiation-safety responsibility with the commanders and project leaders and to require each project to provide its own trained monitors. Training of Rad-Safe monitors was to-be accomplished by Rad-Safe Task Unit personnel. A reserve monitor pool was also to be established by TG 7.2 in case of emergency need. The monitor, from the unit concept, would act as radiation-safety adviser to the project leader. . . Establishment of this policy enabled TU-7 to reduce its operational personnel to a small skeleton staff of 43 personnel supplemented by project monitors of LASL, UCRL, and DOD. 64 BEST AVAILABLE COPY EI Ae NE TEe Tee