iia
3.1.1
Reliability of the Residual Padiation Date.
In general, the
resi@ual instrumentation functioned either very well or not at all.
Pables 3.1 through 3.4 show that the major malfunetions were dus to
inoperative shart drives. The possibility of malfunctioning of the
recoriers was anticipated prior to the operstion; however, lack of funds
ané time forced the use of these recorders.
The recorders that worked
were checked with a Timemaster and adjusted to within 10.069percentaccuracy. ~
The repeated calibrations of the instrusent systems indicated a maxima
total error of lese than 10 percent.
Figures 3.1, 3.3, 3-7, 368, 3.9, 3:13, 3-14, 3.15, 3.16, 3.17, and 3.16
present data taken with the detector heads inside a steel pipe, which served as
blast and thermal protection.
he results from these stations should bq
increased by a factor of about 1.4 to compensate for the shielding of the
blast housings.
This estimate of the shielding factor was derived fron
the field measurements at Station 221.06, Shot Flathead, where one detector
wes inside and the other was outside the blast housings.
On the other hand,
Figures 3.2, 3.4, 3.5, 3.6, 3.10, 3.11, end 3.12 present date from detector
heads without blast shields.
conditions
‘These detectors were ealibrated for free-ficld
(00) ené give free-fielé data.
3-2 INTEIAL RADIATION MEASUREMENTS
ST, LQUts ee
The results from the initial-gaum stations are show in Pigures 3.23,
3.24, end 3.25. The initial-gammn station for Shot Zuni (Station £20.09C)
was destroyed by the shock wave, and the data from this station are available
only to shock arrival and are given in Figure 3.23.
Figures 3.26, 3.27, and
3.26 present the total initial-gamma exposure as a function of tim.