Jes of washdown water were collected on the YAG 39 with a
7-in. fun-
‘gel which was fitted into a hole in the deck and connected by a long piece
‘ef tygon tubing to a collecting bottle just above the recorder room where
ghe personnel were stationed.
Radioactive washdowm weter was collected
rting at U+1.2 hr. The rate of collection was apnroximately 200 ml/nr.
f
first 50 ml measured 10 r/hr at the surface of the container; it was
uted and aliquoted for decay measurements, On U+1.4 days, the bottles
YMG 39 were received at the field laboratory.
Their average reading
69 + 5 mr/nr; the funnels measured 24+ 4 mrfnr.
tles were sent to USNRDL.
Six of the 12
TABLE 33 - Samples from Shot 3
tation
Volume
(m1)
——
$-250.05
3250.05
§-250,97
§~250.07
1365
1822
1650
1065
Total Count at
Gamma
Beta
30.6
48.0
31.4
14.64
26.3
$2250.98
1020
35.7
9-251.02
1160
36.8
3~Coca
Loca
fe}
b)
355
166
Description
K+7,3 days
(c/n x 1077)
53.1
3.33
Comments
=>
Liquid and solid Buoy - Tc(4)
42.5
23.8
42.3
Liquid and solid Raft = TC
Liquid and solid Raft = TC
Liquid and solid Raft - TC
82.1
5033
Liquid and solid
Liquid and solid
56.6
57.8
Liquid and solid
Raft - TC
TC
306) 74 bottle}
Liquid and solid |TC (island)
Project 2.5a total collector
Project 2.4a triple bottle collector
On the YAG 40, significant differences were found in the sampla
collected on each side of the bridge. “onsiderable rain had fallen
before the samples were recoverad, Bottles from the port side read
24 +3 ur/hr on U+4 days; the funnels averaged 6 +1 mr/nr; and the
average water volime was 376 + 68 ml. Bottles from the starboard side
read 28 + 8 mr/hr; the funnels averaged 10 + 3 mr/nr; and the liquid vol.me was 911 + 80 ml,
On that day, the average total gamma count was
4.67 x 107 c/m per bottle for port side collectors ani 13.2 x 107 c/n
per bottle for starboard collectors or 2.8 times as much activity for the
collectors which had been directly exposed to the drifting fallout.
In addition, on U-day wipe samples were taken from an F-84 which
had flown through the cloud. These read as high as 35 r/hr at about
U+6hr.
The early decay of these wipe samples was much slower than
that of the fallout collected on the YAG 39. Since considerable fractionation would be possible during contamination ami decontamina‘ion of
the aircraft, these samples were not considered to be truly representative
of the material in the cloud. Although these samples were given rather
extensive treatment, only the data for iodine analysis will be reported,
31