67
telephone and signal systems. The main signals
terminated at a panel from which distribution
was effected to the surrounding stations. Communications with the Atoll system were established through four telephones connected to the
panel. Three local telephones were utilized for
communication with the zero station, a mirror
house, and a vacuum pumpstation.
The dehumidification system comprised
two 103,000 btu,hr refrigerant compressors with
two 27-gpm water-cooled condensers mounted
above one of them. Five ceiling-mounted de-
CHAPTER II, SECTION 3
to ensure a firm bond between the coarse and
fine aggregate. Also, whenever possible, inspection windows were used to reduce the free fall
of concrete, thus reducing separation. The 34
E ransome paver was used on large pours in
conjunction with the mixer trucks, thus ensuring
a continuously uniform flow of concrete. Difficulty with closing the blast-proof doors was
also encountered as they were too heavy for
the hinges. It was necessary to shim under the
hinges to bring the doors up level and to bevel
the blocks for locking to ensure securing them.
humidifiers were provided; one in Room B, two
in Room C and two in Room D. A primary
air coil of 64,000 btu/hr at 300 fpm face velocity was installed in the primary air inlet. Two
vertical-type, centrifugal, self-priming, 54-gpm
pumps located outside of the station were utilized in circulating salt water for cooling to the
condenser units.
The ventilation system consisted of a 12-
inch round air inlet duct leading to a primary
air fan of 600 cfm, which discharged into a sys-
tem of ducts leading to the various rooms. A
20-inch square air filter was fitted in the air
inlet; a 600-cfm exhaust fan was installed in
the utility room.
Electric room heaters were provided as follows: Room B, one 10 KW unit; Room C, four
7.5 KW units; and Room D, two 3 KW units.
A coax dryer assembly wasinstalled in Room D.
A total of 4,058 cubic yards of concrete
was poured with a 28-day average strength of
3,936 psi. Difficulties were encountered with
pouring concrete for this station due to the
depths of the forms and the closely tied reinforcing steel, both of which caused a large amount of separation. This situation was over-
come by pouring a 3-to-6-inch layer of grout
first, in order to absorb separated aggregate and
eh
‘iy
Figure 2-68.
STATIONS:
PURPOSE:
SITE:
Station 1311.04 - 20% Complete
1311.01, .03, .04 and .05
Alpha Detector Stations
Yvonne
USER:
LASL
PARTICIPATION: 6
CONSTRUCTION: 1-4-56/5-25-56
Each station was a reinforced concrete Lshaped building 25’-4” x 21’ x 19’-6” high with
walls and slabs 5 feet thick and a 5’ x 3’ entrance
corridor. For the most part, double layers of reinforcing steel and inclined stirrups were used.
A 2’-6’-square blast door in the end wall provided access. The stations were precisely located
along the lines of coaxial cable covered with fill
to a depth of 15’. Upon approaching the station,
the fill was increased so that no less than 5’ of
cover was maintained over the building. The
fill extended to a point approximately 30’ beyond the station. Each station had three detect-
Figure 2-67.
Station 1310 - Room B-
During Construction
or heads mounted on a concrete pad that was
approximately 20 feet above the coaxial cable
and rested on top of the fill The detector
mounts were within 1 inch of their specified
locations in relation to the zero stations with
which they participated. All detectors from the
stations were connected to main runs of
coaxial cable which eventually terminated in
Page 2-83