Results of Calculations of External Gamma
Radiation Exposure Rates from Fallout
and the Related Radionuclide Compositions
Operations Nougat through Bowline, 1962-1968
ABSTRACT
This report presents data on calculated gammaradiation 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 wCi/m?.
The 733U, 235U, 238U and 25%240Pu data were omitted primarily to keep the output unclassified.
Futhermore, the natural uranium contentof the soil is about one million times that received from fallout and
at least half of the plutonium in Nevada and Utahsoils comes from worldwide fallout.?
TABLE 1.
Shot Name
Yield, date and placement of Events of Operations Nougat through Bowline, 1962-1968
Yield (kt)
Danny Boy
Sedan
Date
0.43
104
Johnny Boy
Placement
Mar. 5, 1962
Buried 110 ft
July 6, 1962
Buried 635 ft
0.5
July 11, 1962
Buried 2 ft
Smail Boy
Low
July 14, 1962
Low Tower
Little Feller }
Low
July 17, 1962
Surface
Sulky
0.092
Dec. 18, 1964
Buried 90 ft
Palanquin
4.3
April 14, 1965
Buried 280 ft
Cabriolet
2.3
Jan. 26, 1968
Buried 171 ft
Buggy
5.4
Mar. 12, 1968
Buried 135 ft
Dec. 8, 1968
Buried 355 ft
Schooner
30
1