likely somewhat earlier than that assumed in the dose reconstruction, thus the calculated dose is
likely high-sided. The log of LST-1146 also indicates setting Condition Baker and operating the
fire and flushing pumps over some unspecified period of time. This implies that the ship probably
operated the washdownsystem, but the dose reconstruction assumes no reduction in topside
intensity due to washdown. It is noteworthy that, of the twelve valid cohort badges, two of the
three badges indicated in figure 6.8 with levels at or above the calculated dose (230, 290) were
assigned to cohorts of deck and gunnery personnel, and personnel normally standing bridge
watches underway. This may imply exposure of the badge wearers of these cohorts during the
period of fallout, while the washdownreduced the subsequentintegrated intensities below those

used in the dose calculations. In this event, the calculated doseis further high-sided.
In summary,the film badge dosimetry records for the eight ships discussed herein are
often incomplete and potentially misleading. As discussed, careful analysis and evaluation of these
records is required. Notable problemsinclude questionable validity of cohort composition, lack of
recorded issue and turn-in data, and several cited cases of clearly unique but undocumented
exposure activities by various individuals.
It is noteworthy that, with careful application of the methods and logical inferences
noted in the discussions and plotted results for each of the ships, the overall film badge doses for
each ship show reasonable correlation with the reconstructed doses for the entire periods of
participation. This is true even in the few cases wherethere is poor correlation for some of the
discrete badging periods.

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