Project 2.10 - Verification of Washdown Effectiveness as a Shipboard
Radiological Countermeasure - M. M. Bigger
OBJECTIVES
Operation of YAGs and LST to be stationed in fallout area.
RadSefe for NRDL Projects.
Washdown effectiveness evaluation.
PROCEDUFE AND RUSULTS — SEIP QPERATIC!S
The project ships, YAG-39, YAG-4O0 and LST-611 successfully completed their
~
mission on the
YAG-40 tracks is shown
‘(Tewa) shot.
“in Fig 2,10-1,
A preliminary plot of the YAC-39 and
Wore complete informetion rererding all
phases of ship end instrument operations has been given to Project 2.63 for
inclusion in their reports,
YAG-39 OPERATIONS
Fallout arrived on the YAG-39 at 12°05'N, 165°11'E, approximately 25
miles ncrth of the shot rcoint.
The ship was headed into the wind end proceeded
at 2 knots for a distance of 6 miles.
At 1030, the ship began to steer a
figure eicht course with the center et 12°01.5'N and 165°18'E and held the
center of the figure eight within a mile of this stetion.
The figure eight
was about 2 miles long and the wind was always on or forward of the beam.
At 1648, a drogue was launched and the ship kept station on this drogue,
steering a figure eisht, until relieved ty the M/V Horizon at 0245 on T+l
(22 July 1956).
The ship headed for Bikini to off-load samples.
This was
accomplished tetween 0745 and C800 end the ship was back in co=peny with the
Eorizon at 1300,
From 1390 to 1515, water samples were taken on each ship
and similar water measurexents (profiles) taken for comparism..
‘
i EOPIED ybas
VAN. RG
-~ £8 =
Difficulty
4