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CEADIER
ERGINICT I
APPENDIX "CC"
DETERMINATION OF D FACTOR
1. The NTS Planning Board is working on preparation of a
paper which will include recommended limiting operational
criteria for this and future operations.
Dr. Graves, as Chair- |
man of the Board, has established a subcommittee to,
among other
things, develop the best method of classifying individual
detonations as to their degree of difficulty of execution as
related to the established off site rad safe criteria.
At
this date these studies are still in progress, however, indications are that an empirical relationship of measured fallout
of past shot and detonation conditions including yield, height
above ground surface,
surface conditions,
tower or other
vaporized material and weather conditions can be developed that
will provide a method of classifying various proposed detona-
tions as to degree of difficulty.
It has been established that
a reasonably good relationship exists between measured close-in
(150-200 mi) off-site fallout and yield and detonation height
for alr and tower bursts.
The following tables present this
relationship.
-~- 15 -
Cin Ai i ap
Rae Iile Uh
Appendix "c"