3.2.15 USS NICHOLAS Dose Calculations Dose calculations for the NICHOLAS on 26-27 April, when UNION fallout was encountered, are detailed below. Time periods below deck are indicated by an asterisk (*). For all other days, the daily film badge dose is calculated by multiplying the integrated intensity topside (Table 2-15) 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 through 31 May 1954 are given in Table 3-15. Integrated Day Time Period Intensity (mR) 26 April 0000-0600* 0600-1200 1200-1430* 1430-1700 1700-1800* 1800-2000 0 0 32.5 78.5 25.2 50.4 2000-2400* x Ship Shieldig Factor = Adjusted Exposure (mR) 0 0 3.3 78.5 2.5 50.4 0.1 1.0 0.1 1.0 81.0 267.6 (Table 2~15) 0.1 8.1 142.8 26 April film badge dose = (142.8 mR) (0.7 mrem/mR) = 100.0 mrem 27 April 0000-0800* 0800-1200 1200-1330* 1330-1700 1700-1800* 1800-2000 2000-2400* - 127.2 49.9 17.6 41.4 10.3 19.5 37.0 302.9 (Table 2-15) 0.1 1.0 0.1 1.0 0.1 1.0 0.1 27 April film badge dose = (130.0 mR) (0.7 mrem/mR) = 91 mrem 143 12.7 49.9 1.8 41.4 [.0 19.5 3.7 130.0 :