SoA dA SII IIIIIIIII IIIA AAAI IADS. PART Ill, CHAPTER 11 CHAPTER 11 RADIOLOGICAL SAFETY GENERAL 11.1 On 15 March 1958, the beginning of Operation HARDTACK, CJTF-Seven assumed responsibility for the radiological safety of all JTF-Seven personnel. Each Task Group Commander was delegated the responsibility for RADIATION EXPOSURE OPERATIONAL GUIDES 11.6 a. 11.8. ' The Rad-Safe personnel of AEC andits 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 services and operations as they affected TG 7.5 personnel. Close liaison was maintained between 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, b. 11.7 demonstrated that HEN 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 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. A contaminated area, defined as a radiological exclusion area (RADEX), was as FULL RADEX--an area in which the gamma radiation contamination was greater than 100 mr/hr gamma,or greater than 10,000 counts per minute (cpm) 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 area of 55 square centimeters. 11.4. as Assistant Chief of Staff, E-7. This organizational arrangement was most satisfactory, and 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. follows: complished by agreement between the two TG Commanders. was at EPG, the AEC Rad-Safe Assistant acted gens (r) for any consecutive 138-week The gamma criteria for TG 7.5 personnel was further restricted to 5.0 r for the calendar year. decontamination, and equipment repair, was ac- The Commander of TG 7.5 held RadSafe responsibility for the personnel of TG 7.5. The CTG 7.5’s Rad-Safe Adviser was responsible for staff direction on all TG 7.5 RadSafe policies. The AEC Rad-Safe Officer was designated the Assistant Chief of Staff, E-7, with responsibility to the TG 7.5 Deputy Commander for supervising the Rad-Safe operations and recommending protection measures. The Contractor’s Rad-Safe Officer functioned as the Operations Officer and provided necessary support. During periods when neither the Rad-Safe Adviser nor the Assistant Chief of Staff, E-7, Gamma--a maximum of 3.75 roentriod, with a maximumof 5.0 r within the period of the Operation. to CTG 7.1 the operational control of the Rad-Safe facilities operated during the nontest period by H&N. This control was returned to CTG 7.5 on 3 September 1958, 15 days after ¢ Seven personnel authorized by CJTF- Seven directive was: radiological safety for the personnel within his particular Task Group. 11.2 On 1 April 1958, CTG 7.5 relinquished the last detonation. The total cumulative exposure to JTF- 11.8 Entry of 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 access pass issued by the TU-6 Plotting and Briefing Officer which stated the purpose and the precise location of the entry. H&N operated d-Safe check points only when it was necessary for the control of TG 7.5 personne] or when required to sup- plement TU-6 personnel. 11.9 All parties entering FULL RADEX areas were accompanied by certified monitors. Work-party monitors were furnished by H&N. All persons were required to wear anti-contamination clothing in FULL RADEXareas. TU-6, TG 7.1, determined the kind of clothing to be worm in a LIMITED RADEXarea as the particular mission demanded. However, for TG 7.5 personnel, concurrence was obtained from the Contractor's Rad-Safe Officer. Page 61