CHAPTER I}, SECTION 3
a
a
Figure 2-61.
STATION:
PURPOSE:
SITE:
USER:
PARTICIPATION:
CONSTRUCTION:
OCCUPANCY:
Station 1220.07
Figure 2-62.
1310
Alpha Recording Station
Yvonne
LASL
6, 7 and 24
12-2-55/4-28-56
3-4-56
This station was a non-expendable 56’ x 70’
x 16’-high reinforced concrete building, with 5’-
6”-thick walls; it was divided into three scientific equipment rooms and one utility room
with connecting corridors for ingress and
egress.
The entrance corridor had two 90-degree offsets
for reducing the possibility of a radiation hazard. An entrance tunnel maze extended from
one corner of the building and a separate vestibule provided emergency access in case blast
pressures rendered the main entrance unusable.
Surrounding the’ tunnel and on three sides of
the building was a 24-foot high retaining wall
which held back a 12-foot earth cover over the
station. The leading edge of the fill was sand-
bagged. The exterior walls and slabs of the
station were 5’-6” thick with most of the re-
inforcing placed in two layers to provide rea-
sonable bar spacing for the concrete pour. A
large quantity of stirrup reinforcing was used
in order to obtain a flexible structure and allow
Station 1310-15% Complete
inch pipe sleeves. Steel blast doors were installed at the ends of the tunnel maze, the entrance
to the forward room, and the emergency access
vestibule. Two ventilation pipe doors located
in one retaining wall permitted extending 12-
inch piping through the fill into the station. A
j-ton capacity crane with removable rail was
provided over the main entrance corridor door
for lifting heavy equipment off trucks.
Power was supplied from the island distribution system to two dry-type 150 KVA, 3phase transformers in the utility room, with
secondaries at 120/208 volt, 4-wire. One trans-
former supplied scientific and the other utility
power. The utility system consisted of air conditioning units, de-humidifiers, room heaters,
trailer receptacles, and vacuum pumps for Station 1841. The scientific system comprised special instruments, detectors, normal lighting, and
a postshot recovery panel. The postshot panel
provided for emergency lighting to the corridor,
utility room (A), instrument rooms (B and C),
and the general purpose room (D). During preshot operations, the emergency panel was supplied by the scientific system, but for post-shot
recovery, a User-furnished portable generator
was provided.
Room B was divided into three parts: an
for high shear loads. The interior walls were
3’-6” and/or 4’ thick in order to carry the roof
and base slab reactions. Numerous openings in
the roof coupled with a relatively thin roof slab
required special design considerations with respect to blast loadings. Embedded 24-inch Ibeams spaced between the sleeves and conduits
took the shear loads and acted as the tension
isolated screened section, large instrument section, and light channel section. The isolated
screened section was built of wood with a copper
screen between two layers of plywood. All copper-screened connections were lapped and soldered for maximum continuity and insulated
from one layer of the plywood by a sheath of
polystrene plastic. All electrical circuits leading
used as supports for sliding steel-framed lead
doors which covered the lower end of the 12-
furnished filter panel. The outlet boxes and wire
coverings within the room were nonmetalic. The
station was used as a distribution point for
reinforcing the slab. The lower flanges of the
I-beams were set flush with the ceiling and
Page 2-80
into the screened room passed through a User-