ift tr Results of Calculations of External Gamma Radiation Exposure Rates from Fallout and the Related Radionuclide Compositions Operation Teapot, 1955 ABSTRACT This report presents data on calculated gamma radiation exposure rates and ground deposition of related radionuclides resulting from Events that deposited detectable radioactivity outside the Nevada Test Site complex. INTRODUCTION The Events which deposited detectable radioactivity outside the Nevada Test Site complex! are listed in Table.1. RESULTS Results of the calculations of relative external gamma radiation exposure rate and related radionuclide ground deposition are given in the Appendices. These calculations are described in detail in Ref. 2. The output of the calculation has 30 decay times, 10 from 1 to 21 h, 10 from 1 to 300 d, and 10 from 1 to 50 y. For each of these times and for zero time there are values of the external gammaradiation exposure rate normalized to 1 mR/h, 1 m abovethe surface, 12 h after the event, the associated values of uCi/m? for each radionuclide, and the total uCi/m?. TABLE 1. Yield, date and placement of Events of Operation Teapot, 1955. Event Yield (kt) Wasp 1 Feb. 18 Air drop 762 ft Moth 2 Feb, 22 300 ft Tower Tesla 7 March 1 300 ft Tower Turk 43 March 7 500 ft Tower Hornet 4 March 12 300 ft Tower Bee 8 March 22 500 ft Tower Ess Apple I Date Placement 1 March 23 Buried 67 ft 14 March 29 500 ft Tower Wasp Prime 3 March 29 Air drop 740 ft HA 3 April 6 Air drop 36620 ft Post 2 April 9 300 ft Tower Met 22 April 15 400 ft Tower Apple Ii 29 May 5 500 ft Tower Zucchini 28 May 15 500 ft Tower 1 ——e