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West wall of L-8 generator pit, through which workmen are cutting an opening for the penstock of a Shasta turbine. The wall was first drilled, then the center section will be blasted. Photo of workmen operating chippings guns.
1942-05-13
2024-11-24 |
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Riggers attaching a sling to a large section of concrete wall between pits 8 and 7, preparatory to removal. The opening was required for coupling the Shasta turbine in pit No. 7 to the penstock in pit No. 8.
1942-05-26
2024-11-24 |
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Shasta turbine scroll case L-7, from elevation 951, looking east. Water will be supplied from penstock L-8, through a reducing elbow extending through the pit wall.
1942-07-08
2024-11-24 |
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With five sections of the scroll case of a "Shasta" turbine in their final position, the three remaining sections, connected together, are moved into place by an overheard crane.
1942-07-11
2024-11-24 |
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Tightening up temporary bolts in #1 Shasta turbine, scroll case.
1942-07-23
2024-11-24 |
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Bucking rivets on Shasta #1 (unit A) scroll case with a moveable mechanical device.
1942-07-28
2024-11-24 |
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Special elbows were required to connect a Shasta turbine scroll case in one turbine pit with a penstock in an adjoining pit because the Shasta turbines turned in a "left-handed" direction while the Grand Coulee units turn "right-handed. Each inlet...
1942-12-28
2024-11-24 |
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The water wheel of a "Shasta" turbine being lowered into place. Guide vanes, which direct water from the scroll case into the wheel and also stiffen the speed ring, are visible behind the rigger.
1942-10-15
2024-11-24 |
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Lowering the turbine runner for the L-7 Shasta turbine into place. The wheel is seen as it is entering the well at El. 979. The weight of the runner with its 38" shaft is about 85 tons.
1942-10-15
2024-11-24 |
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Looking down on work in pit No. 8, from the top of the wall at El. 991, between pits 8 and 7. Reinforcing steel for the throat of the draft tube has been placed.
1942-06-26
2024-11-24 |
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Erection of the scroll case of Shasta turbine L-8. This view shows men using sledge and flatter to lay up a butt strap, after heating.
1942-07-25
2024-11-24 |
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In order to fit together the sections of the plate-steel scroll cases of the Allis-Chalmers turbines built for the Shasta plant, bolts, tightened with impact wrenches, were placed in all the rivet holes through shells and butt straps.
1942-07-25
2024-11-24 |
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Motors, pumps, pipes, gauges, connections, and controls of the oil circulating system for the guide bearing of an Allis-Chalmers (Shasta) turbine. In case the oiling system driven by an alternative current motor fails, another, operated from a...
1942-12-28
2024-11-24 |
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Control room in the left powerhouse, showing arrangement for indirect lightning along the wall and a ventilator in the ceiling. At the left, the benchboard for the control of the 108,000-kw. units is being installed, and at the right, control...
1942-02-11
2024-11-24 |
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From the control room desk at the left, power plant operators have telephone connections with all parts of the dam and powerhouse, and long distance outlets through the local Bell telephone system, also facilities for communicating with other...
1942-07-08
2024-11-24 |
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This mimic board in the main control room shows the interconnections of generators, transformers, power circuits, associated switch yard equipment, and the outgoing transmission lines, as arranged on December 14, 1942, except that Spokane lines...
1942-12-14
2024-11-24 |
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Bench board in the control room of the left powerhouse, for the control of the station-service generating units and the drum gates. The right hand panel carries remote-control equipment for the drum gates in the spillway of the dam.
1942-08-26
2024-11-24 |
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The time standard for the regulation of generator speed is a master clock in the control room of the left powerhouse. The block is driven by energy from a storage battery. A feeble pulsating electric current, generated by a 60-cycle tuning fork,...
1942-08-26
2024-11-24 |
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Control panels for L-2 generator in the governor gallery, at El. 951. The board at the left controls the generator and auxiliary equipment. The cabinet at the right contains the turbine governor and its controls.
1942-01-20
2024-11-24 |
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This is a portion of the generator unit-control station being constructed in the governor gallery of the left powerhouse, at elevation 951, for the No. 1, 75,000-kilowatt Shasta generating unit in the pit L-7. The station will start the turbine,...
1942-12-12
2024-11-24 |
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This is the generator control cubicle of the unit-control station for the No. 1, 75,000-kilowatt Shasta unit in pit L-7. It is situated in the governor gallery at elevation 951. The station will start the turbine, indicate the loads and...
1942-12-12
2024-11-24 |
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Oil circuit breaker between generator L-1 and a bank of three 36,000-kv.-a. triple-winding, 13,800/115,000-230,000 volt transformers. When generator L-1 is to be shut down, it is disconnected from the transformers by means of the circuit breaker,...
1942-10-19
2024-11-24 |
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Test set-up for calibrating the rotating standard watt-hour meters (right foreground) from the laboratory standard meter, which is being read by Test Engineer, F. R. Schleif. This is part of the test procedure for indirectly checking the generator...
1942-04-13
2024-11-24 |
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The core of a special 36,000-kv.-a. transformer, just unloaded from a gastight car in which it was delivered from the General Electric factory. The transformer is provided with full-capacity secondary windings for both 115,000 and 230,000 volts.
1942-01-15
2024-11-24 |
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The station service transformer room of the left powerhouse. The transformers, each of 500 kv.-a. capacity, step down energy generated at 6900 volts to 460 volts, for operation of machinery in the power plant.
1942-01-10
2024-11-24 |
