safe time interval after the weapon or device had been armed to allow Come
plete evacuation of the atoll when necessary, and to permit the Firing Team
time.
This provided several hours in which zero time could be rescheduled
when the weather was uncertain. When possible the arming operations werg
conducted during the daylight hours, but on several occasions it was neces.
sary to arm after dark. Transportation for the Arming Team was provided
by plane, helicopter, or watercraft, according to the type best suited for the
particular zero location.
Firing was accomplished from a Control Room by starting, 15 min
before zero, a motor-driven timer which automatically provided the timing
signals. There was a Control Room at Parry, Eniwetok, and Enyu, Bikini,
The Control ‘= at Enyu could be remotely controlled by radio from the
USS Curtiss.
was the only test where the remote station aboard
the USS Curtiss waS
‘used.
Several disarming operations were conducted at both atolls because of
postponements due to unfavorable weather conditions. Only one disarming
was conducted under an emergency situation. This was
after the
shot had been canceled with 3 min of zero time
-6 did not have responsibility for the two airdrops during the operation. However, through visual observance it was noted that the airdrops
were handled in accordance with Sandia approved field procedures. The
fuze and firing circuits of the weapons operated well within the specified
tolerances.
All weapons and devices were detonated at the proper time and no
misfires occurred during the operation.
4.7
4.7.1
TASK UNIT 7, RADIOLOGICAL SAFETY |
Mission
The mission of TU-7 was as follows:
1. Perform all ground and aerial monitoring services associated with
the scientific mission except those in conjunction with aircraft and airborne
collection of scientific data; assume responsibility for rad-safe for TG 7.5
during the operational phase.
- 148 -
et
safe separation timer was set to open the arm line up to 8 hr after zero
ON
the arm line. On some of the smaller shots at Eniwetok where the diagnog.
tic measurements were not restricted to a certain early time period, the
{
When a shot was canceled within 2 hr of
zero time, the Disarming Team entered the zero area after the timer Opened
2 rN
to retire to the Control Room.