Radiation Safety and Cleanup Preparations 185 situation, an extensive radiation protection program was developed. To protect against exposure from alpha and beta radiation, personnel protective equipment was used, personnel monitoring and decontamination procedures were established, and a variety of administrative procedures were formulated. To protect against exposure to gamma radiation, rigorous precautions were taken to assure that the gamma-contaminated areas were well defined, access to them wasstrictly controlled, and the time any individual could spend in such an area was limited. The radiation protection program andits remarkable effectiveness is discussed in the subsequentsections. No other aspect of the Enewetak radiological cleanup operation received the attention, priority, and detail that the radiation safety (radsafe) program received. wet oe ee STANDARDS AND GUIDANCE Army Regulation (AR) 40-14, 20 May 1975, was adopted as the basic standard for personne! radiation exposures at Enewetak. This document implements the guidelines contained in Title 10, Code of Federal Regulations (CFR), Part 20 and Title 29, CFR, Part 1910.!2.13These basic radiation standards, which were adopted for the Enewetak Cleanup Project, include: a. The accumulated dose equivalent of radiation to the’ whole-body, head and trunk, active blood-forming organs, gonads, or lens of the eye will not exceed: (1) 1.25 rems in any calendar quarter, nor (2) 5 remsin any calendar year. b. The accumulated dose equivalent of radiation to the skin of the whole-body (other than hands and forearms), cornea of the eye, and bone will not exceed: (1) 7.50 remsin any calendar quarter, nor (2) 30 remsin any calendar year. c. The accumulated dose equivalent of radiation to the hands and wrists or the feet and ankles will not exceed: Cc (1) 18.75 rems in any calendar quarter, nor (2) 75 rems in any | calendar year. d. The accumulated dose equivalentof radiation to the forearmswill not exceed: (1) 10 rems in any calendar quarter, nor (2) 30 remsin any calendar year. e. The accumulated dose equivalent of radiation to the thyroid, other organs, tissues, and organ system will not exceed: ath rye Se