CHAPTER I!, SECTION 3
ing shield. In the cabs of Stations 11, 12, and 13,
lead-paraffin shields were constructed of blocks
of paraffin 12x12x18 inches and bricks of leadparaffine. The material was supported by steel
angle framework, with plywood lining of the
configuration of the shield. The shield in the cab
of Stations 12 and 13 was 8 feet high and 18
inches thick. The vertical portion was a wall 6
feet wide and the horizontal portion 6 feet wide
and 71% feet long set on the deck. The two
portions formed an L-shaped shield in crosssection. The shield in the cab of Station 11 was
8 feet high and 20 inches thick. The vertical
portion consisted of two walls intersecting to
form an L-shape in plan 8x71 feet, with the
horizontal portion 8x74 feet set on the deck.
A 40-foot-high pipe mast for all the stations and
a 20-foot-high pipe mast for Stations 29, 32, and
timber and located on the starboard side between
the cab and the hatch shelter. In the design of
this facility it was required to determine if any
flexing of the barge occurred along the long axis
as a result of wave and wind action while anchored in a typical four-point mooring. Studies were
conducted at Jobsite to measure this flexing,
and it was determined wave and wind action had
little or no effect but that deck temperature
which was a function of weather could cause de-
flections as large as 1 inch between ends of the
barge. Since LASL required a tight alignment
tolerance and the barges were to be used at
dawn, it was necessary to do all final alignment
of the pipeline after 2000 hours and before sunrise.
34 were installed outside each cab to mount
A 16-pair and a 26-pair submarine signal
cable were run to Stations 29, 32, and 34 from
stations.
were terminated in a cabinet on a rack on the
User-furnished antennas for the 81 and 83 series
the timing station on Site Yvonne. These cables
stern end of the barge. From this cabinet, cables
sight was required between the working point in
were run to the cab where other cabinets were
installed.
feet under the water. To establish this line of
sight and connect the detector it was necessary
Stations 11 and 12 had deck sprinkler systems for washdown of possible fall-out from the
For the Pinex experiment a clear line of
the cab and a detector 130 feet away and 20
to cut a 2x12-foot hole in the barge deck; construct a pipeline through the compartment and
under the barge; and provide a caisson for dry
access to the lower end of the pipe to check
pipe alignment and to connect the detector. The
pipeline for this line of sight was rigidly welded
to main members in the compartments and suspended from bolted pipe bracing attached to
the barge bottom. The pipeline for Stations 11,
12, 138, 32, and 34 consisted of two concentric
pipes beginning at a point approximately 47 feet
from the working point. The inner pipe was
composed of 33 feet of 5-inch extra strong pipe
and 50 feet of 12-inch Schedule 80 pipe. The
outer pipe was 24-inch extra strong pipe. For
Station 29 a single pipeline was used. This pipe-
line started at the same location but consisted
of 34 feet of 24-inch extra strong pipe, 10 feet
of 12-inch extra strong pipe, 7 feet of 6-inch
extra strong pipe, an air gap of 5 feet, 7 feet of
6-inch extra strong pipe, and 20 feet of 12-inch
extra strong pipe.
Station 11 was provided with an additional
shield which was located close to the pinhole
access shelter. It was mounted on a 4-foot-high
wood platform and was contained in a timber
frame. Lead bricks stacked in thicknesses vary-
ing from 2 to 6 inches provided the shield. The
configuration of the shield was L-shaped with
one leg 7 feet long and the otherleg 3 feet long.
The sides, top, and bottom of the shield formed
a tunnel 9 inches wide and 16 inches high. A
ready room 14x10x8'%4 feet high was built of
events at Site Charlie. A 325-gpm pump drew
sea water through a 4-inch suction hose line on
the side of the barge and pumped to sprinkler
heads throughout the deck area.
STATION:
17
SITE:
Off Yvonne
USER:
LASL
PURPOSE:
Zero Station
PARTICIPATION: 17
DESIGN PSI:
None
CONSTRUCTION: 6-16-58/7-25-58
The bow end of a U.S. Army-type BC
Barge, 120 feet long by 33 feet wide, supported
this station. The timber structure was divided
into a device room, 21 feet square in plan by
15 feet, 8 inches high and a cab 12 feet long,
7 feet wide by 7 feet high on the roof above the
device room. The device room had a personnel
door and two shutters on each side, a 4x7-foot
door on the bow end, and two 6x6-foot hatch
openings on the roof. The roof cab had two shutters and a 4x7-foot door and was painted red.
Six 4x6-inch columns 20 feet high were installed
along the port side of the barge. Positioning of
this barge was accomplished using a four-anchor
mooring connected to two winches and two
double bitts. Power for this station was supplied
from one 20-kw generator.
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