CHAPTER II, SECTION 3 number for this Operation. It was necessary to remove the earth cover over the station prior to effecting rehabilitation. A cooling and ventilating system with a capacity of 1,500 CFM and a 1,000 gallon tank for storing generator fuel were installed inside the station. The existing sump was used and a new 150 gpm sump pumpwasinstalled. Electrical work included relocating ten existing 214” conduits and installing 34 new 214” conduits and two new 6” conduits from the side of Station 2201 to CASTLE Station 2211. The existing electrical panel was relocated from Room B to the Utility corridor. Three new electrical receptacles that were duplicates of the existing receptacles were installed in Room B. Cope trays, 12” x 25”, were suspended 12” below the ceiling in Rooms A and B. Power was supplied from the main powerhouse through a 150 KW transformer. Auxiliary power was provided by one 35 KW and a 10 KW Diesel generator with a manually operated transfer switch. A 16’ x 32’ type B2 tent was erected on an existing concrete slab. A 200-amp, 3-pole breaker was added to the main utility power panel. The breaker was to open at H-minus one minute by EG&Gsignal. STATION: PURPOSE: SITE: USER: PARTICIPATION: CONSTRUCTION: OCCUPANCY: 2210 Generator Station Sugar UCRL 22 10-4-55/5-5-56 4-7-56 This was a generator station consisting of one 10 KW, 220-volt, 3-phase generator and one 35 KW, 220-volt, 3-phase generator for instrument power of Station 2200. Voltage regulation of the generators was required to be within approximately one per cent accuracy and their locations had to be within 50° from Station 2200. The station had two concrete wing walls for retaining sand as protection and a 6’-high x 6’-thick concrete curtain wall to electrically shield the utility power from the instrument power. In addition, the generators were required to have a remote control panel in Station 2200. A delay in construction was experienced due to difficulties connected with receiving electrical equipment. STATION: PURPOSE: SITE: USER: PARTICIPATION: 1, 2, 3 and 4 CONSTRUCTION: 11-3-55/4-27-56 Station 2211 was a generator station containing one 10 KW generator and one 35 KW generator for instrument power of Station 2201. An engineering study was madeto deter-. mine whether it would be less expensive to expend the generators or to protect them in a shelter. If they were to be expended, several additional generators would be required. As a result of the study, a concrete shelter 14’ x 24’ x 8’-3” high, with a slab and roof 4’ thick, was constructed, which had wing walls 85’ long, 21’ high and 3’-6” thick. A 4’x6’-high 6”-thick concrete wall to electrically shield utility power from instrument power was also provided. Voltage regulation within one per cent was required. A remote control panel was located in Station 2201. A total of 382 cubic yards of concrete was poured. STATIONS: PURPOSE: SITE: USER: PARTICIPATION: CONSTRUCTION: OCCUPANCY: Figure 2-99. Station 2210 Retaining Wall and Concrete Shield Page 2-110 2211 Generator Station Sally UCRL 2220.01 and 2220.02 Long Range Detector Sugar UCRL 22 1-20-56/5-24-56 3-14-56 These stations consisted of concrete foundations 5’ x 8’-4” and 3’ thick which were required to support detectors with a load distributed into three bearing surfaces, each approximately 240 inches square and supporting a 6.7 kip load. To the rear of each foundation was a 5’ x 4’ x 2’ deep copper-lined capacitor pit with four 3” galvanized pipe sleeves 6” on center and 8” above the floor of the pit. Anchor bolts in