The inspection began with an atomic defense exercise that simulated an encounter with radiological contamination under conditions likely to occur during the CASTLE tests rather than in battle. Staff and ship's officers, according to the TG 7.3 final report (Reference 11, p. lla-3), observed and evaluated the » « « Ship's closure of gas tight envelope, decontamination stations, washdown systems in operation, Radiological Defense Bill, radiac equipment, decontamination equipment, and pre-contamination preparation of the ship. During the inspection, observers did uncover “numerous small deficiencies which were corrected." The judgment expressed in TG 7.3's final report (Reference 11, p. lla-4) was that: The inspections instilled in ship's personnel confidence in their ability to protect themselves from radiation and thus improved morale in many cases. All inspections were considered satisfactory, and subsequent events proved their worth. Operation of ship washdown systems during fallout was a constant source of exposure to radiation for some personnel, according to the TG 7.3 final report (Reference 11, p. lla-3): During operation of the washdown systems it was found necessary to have a few personnel topside and exposed to radiation in order to clear the fire main strainers, replace ruptured hoses, and to take the kinks out of the hoses when the washdown system was first turned on. Furthermore, when a ship encountered fallout, the crew was required to close off all ventilation to spaces below decks. Crews found this raised temperatures beyond tolerable levels in the engineering spaces. Conse- quently, according to a report filed from the Philip after CASTLE, "from time to time it was necessary to relax the material condition in order to resume ventilation of these spaces." The result was unavoidable exposure of personnel in those areas to airborne radiation. ported (Reference 28): 122 As one ship later re-