psy ved ddssesVyvVsesvsysevsa 6 , GONEIDENTAL PART fll, CHAPTER 11 CHAPTER 11 RADIOLOGICAL SAFETY GENERAL 11.1. On 15 March 1958, the beginning of Operation HARDTACK, CJTF-Seven assumed responsibilitv for the radiological safety of all JTF-Seven personnel. Each Task Group Commander was delegated the responsibility for 11.6 The total cumulative exposure to JTFSeven personnel authorized by CJTFSeven directive was: a. radiological safety for the personnel within his particular Task Group. 11.2 On 1 April 1958, CTG 7.5 relinquished to CTG 7.1 the operational control of b. test period by HEN. This control was returned to CTG 7.5 on 3 September 1958, 15 days after the last detonation. 11.8. The Rad-Safe personnel of AEC and its Contractor functioned as an independent Rad-Safe organization for TG 7.5. TU-6, the Rad-Safe organization for TG 7.1, acted as the Rad-Safe organization during the operational period: however, to keep radiation exposure to a minimum, TG 7.5 maintained control over The gammacriteria for TG 7.5 personnel was further restricted to 5.0 r for the calendar 11.7 A contaminated area, defined as aradiological exclusion area (RADEX), was as follows: FULL RADEX--an area in which the gamma radiation contamination was greater than 100 mr hr gamma, or greater than 10,000 counts fer minute (cpm) CTG 7.5 and CTG 7.1 on all Rad-Safe matters of mutual interest. Facilities were shared. and work on common problems, such as dosimetry, decontamination, and equipment repair, was accomplished by agreement between the two TG Commanders. alpha using a portable survey meter with a probe area of 55 square centimeters. LIMITED RADEX--A radiation contaminated area with an intensity between 10 and 100 mr‘hr gamma, or between 1000 and 10,000 cpm alpha, with a probe 11.4. and recommending protection measvres. The Contractor's Rad-Safe Officer functioned as the . year. personnel. Close liaison was maintained between with responsibility to the TG 7.5 Deputy Com- Any exception to this guide was to be on an individual basis and had to be approved by CTG 7.5 and the CJTF-Seven. services and operations as they affected TG 7.5 The Commander of TG 7.5 held RadSafe resnonsibility for the personnel of TG 7.5. The CTG 7.5’s Rad-Safe Adviser was responsihle for staff direction on all TG 7.5 RadSafe policies. The AEC Rad-Safe Officer was designated the Assistant Chief of Staff. E-7, Gamma--a maximum of 3.75 roentgens (r) for any consecutive 13-week period, with a maximum of 5.0 r with- in the period of the Operation. the Rad-Safe facilities operated during the non- mander for supervising the Rad-Safe operations yyvvve dv’ vbvsy RADIATION EXPOSURE OPERATIONAL GUIDES area of 55 square centimeters. 11.8 Entryof all personnel into contaminated areas was controlled by CTG 7.1, TU-6. Personnel were not permitted beyond the RadSafe check point without a proper acces: pass issued by the TU-6 Plotting and Briefing Officer which stated the purpose and the rrecise location of the entry. H&N operated Rad-Safe check Operations Officer and provided necessary support. During periods when neither the Rad-Safe points only when it was necessary for the control of TG 7.5 personnel or when required to supplement TU-6 personnel. as Assistant Chief of Staff, E-7. This organi- 11.9 demonstrated that H&N could adequately supply radiological safety services for TG 7.5. In previous test series, Rad-Safe personnel were integrated into TU-6, TG 7.1, and the CTU-6 Work-party monitors were furnished by H&N. All persons were required to wear anti-contami- Adviser nor the Ascictant Chief of Staff, E-7, was at EPG. the AEC Rad-Safe Assistant acted zational arrangement was most satisfactory. and became the Rad-Safe Officer for TG 7.5. 11.5 The operational chart of the TG 7.5 RadSafe organization is shown in Figure 3-8. All parties entering FULL RADEX areas were accompanied bycertified monitors. nation clothing in FULL RADEX areas. TU-6, TG 7.1, determined the kind of clothing to be worn in a LIMITED RADEX area as the par- ticular mission demanded. However, for TG 7.5 personnel, concurrence was obtained from the Contractor’s Rad-Safe Officer. Poge 61 ot