3.2.11 USS LST-551 Dose Calculations The LST-551 experienced fallout after Shots BRAVO, ROMEO, and NECTAR while participating at Operation CASTLE. All fallout was either light (Shots BRAVO and NECTAR), or came at a time when normal crew routines were not Significantly altered by its presence (ROMEO). The daily film badge dose is calculated by multiplying the integrated intensity topside (Table 2-11) by the time-averaged shielding factor (0.46); the integrated intensity below is multiplied by the fraction of the day spent below deck (0.6), Contributions from each source are summed and converted to a film badge dose. Table 3-11 gives the cumulative film badge dose through 31 May 1954. 3.2.12 USS LST-762 Dose Calculations Most of the fallout that was experienced onboard the LST-762 occurred while the ship was beached on Parry Island, Enewetak Atoll (Shots BRAVO and ROMEO), This fallout was relatively light and normal crew routines were probably nat altered by its presence. Although Shot YANKEE fallout necessitated using the ship's washdown system intermittently for a four-hour period during the afternoon of 6 May, intensities were not so high as to seriously restrict crew duties. A "typical" work day has been assumed on 6 May which tends to high-side the dose calculated for that day. The daily film badge dose is calculated by multiplying the integrated intensity topside (Table 2-12) by the time-averaged shielding factor (0.46); the integrated intensity below is multiplied by the fraction of the day spent below deck (0.6). Contributions from each source are summed and converted to a film badge dose. Cumulative film badge doses are given in Table 3-13 thorugh 31 May 1954. 3.2.13 USS LST-825 Dose Calculations The LST-825 experienced light fallout following Shot BRAVO as it was passing through the PPG enroute to Japan. Crew activities would not have been altered by this contamination. Since the ship's hull and interior saltwater systems did not become contaminated from steaming in radioactive water, personnel film badge doses are calculated by multiplying the integrated free-field intensities in Table 2-13 by the time-averaged shielding factor (0.46), and then by 0.7 to convert to a film badge dose. Cumulative film badge doses through 31 May 1954 are given in Table 3-13. 137