69 CHAPTER II, SECTION 3 No serious difficulties were experienced with this large Station. The tying of the closely spaced reinforcing bars was time-consuming. An airlift shuttle service was required between the construction site and the camp on Fox to reduce time lost in travel. A total of 822 cubic yards of concrete was poured with an average 28-day strength of 4,200 psi. STATION: PURPOSE: SITE: USER: PARTICIPATION: et 5 Figure 2-73. aa Fis eeanaateael! Station 1319 - 98% Complete 1320 Detector and Recorder Dog LASL 10, 11, 12 and 13 CONSTRUCTION: 1-14-56/5-3-56 OCCUPANCY: 5-14-56 The station was existing building, CASTLE leads in 2-inch conduit. Conduits from this power panelcarried circuits into the station for light and utility receptacles, thermostat and humidistat, and instrument power. Conduits were also led with wires from the timing cabinet to two explosion-proof links. A 16-circuit submarine cable from Dog terminated in a cast iron weatherproof junction box mounted outside of the station. From this box, 14-inch conduit led to the terminal cabinet inside the station and carried the circuits for User signals, the door-closing signal telephone. at H-5 seconds, and a The dehumidification equipment was lo- cated on a concrete pad outside of the station. A direct expansion-type coil, 2 square foot face area, 65,000 btu/hr and using Freon 12, was installed in the primary air system. An 822 cfm fan located on the equipment slab supplied air to the station through a 12-inch round steel duct. A 20” x 16” x 2”air filter in an aluminum housing was connected to the fan inlet. Exhaust was through a 12-inch round steel pipe duct with two 90-degree bends for radiation protection. The Freon 12 refrigerant system had a dx coil and a 5.4-ton capacity air-cooled compressor. A refrigerant liquid receiver was installed below the condenser. A 10 KW air duct heater was used to reheat primary air. Two 18”-square 2”-thick steel-plate slideing doors mounted in steel housings and held in open position with %-inch wire rope connected to explosive blast links provided for closing the air openings prior to the blast. A fuel supply system for the generators consisted of a 1,000-gallon steel tank, all welded, 6’-11” diameter, 7’-6” long and with fuel lines to and from the engines. Station 1210 to which was added a concrete wall at the front and roof for radiation shielding; a reinforced concrete building at the rear; and a sight tube structure in the forward area. The shield wall extended up the forward wall and over the roof for half the width of the existing building and its entire length. This new wall was doweled into the existing roof and Wi y The reinforced concrete building began at the rear wall of the existing structure and extended back 31’ to a 90-long retaining wall; the building was 48 wide and the walls and slabs were 3 feet thick. A large opening was provided in the rear wall to permit installation of equipment. This opening was provided with a steel-framed blast panel 7’ x 8high which would normally remain closed. Access to the addition was provided by means of a steelframed blast door 4’ x8’ high with additional access by means of a vestibule containing an interior steel-framed blast door 2’-6square. The tunnel of the existing building was damaged during prior events and was removed. The new tunnel was incorporated within the addition. In order to allow the addition to act as a unit with the existing building in resisting blast load, the roof, base slab, and ex- terior side walls were doweled into the existing structure. An exterior monorail hoist was installed over the rear blast door. Mounted on the roof of the new addition, at the rear, was an exhaust pipe housing of reinforced concrete, 9’ x 25’ long x 4’ high, with two steel hydraulically-operated blast-resistant vent doors. In front of the existing station was a re- inforced concrete baffle wall and retaining wall Page 2-87