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Bolts holding the sections of a scroll case together are actually stretched so as to make them exert a greater force than that of the water, which tends to separate them. The increased in length, determined by micrometer, is a measure of the force...
1943-05-26
2024-04-28 |
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Interior view of the scroll case of a 150,000 horsepower hydraulic turbine, being installed for unit L-3 of the left powerhouse, to drive a 108,000 kv.-a. generator.
1941-01-24
2024-04-28 |
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Crown plate is placed on the scroll case of the 150,000 horsepower turbine for main unit L-3. A test ring (which does not show in this photograph) and the crown plate are temporarily assembled on the scroll case for the purpose of making the...
1941-02-06
2024-04-28 |
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Unit L-3 in the left powerhouse. The turbine scroll case has been embedded in concrete, and form work and concrete placing operations are now in progress for the generator foundation.
1941-03-24
2024-04-28 |
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Main unit L-3 turbine runner (water-wheel) suspended over turbine pit in left powerhouse, and about to be lowered into position.
1941-04-26
2024-04-28 |
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Mr. Frank J. Malarky, erecting engineer for the Newport News Shipbuilding and Drydock Company, inspecting completed installation in the L-3 turbine pit. Servo-motor appears in right background, with wicket gate shaft housings in left foreground.
1941-07-24
2024-04-28 |
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Thirty-one foot rotor shaft is set in position on the special assembly platform constructed in the L-9 turbine pit of the left powerhouse. A crew of men from the Westinghouse Electric & Manufacturing Company factory will assemble the rotor on this...
1941-02-11
2024-04-28 |
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Assembly in progress on the rotor for a 108,000 kv.-a. generator at the left powerhouse. The extension pieces have been attached to the shorter arms or spokes of the spider, and stacking of the rotor rim laminations or plates has been started. The...
1941-02-26
2024-04-28 |
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Assembling the four sections of the stator of a 108,000 kv.-a. generator in the left powerhouse. Ladders and stairways are required to work on the world's largest hydro-electric generator. Experts from the Westinghouse factory are installing coils...
1941-03-19
2024-04-28 |
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Lowering stator of main unit L-3 into place, in left powerhouse.
1941-05-20
2024-04-28 |
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A 527-ton rotor, for the first of the 108,000 kilowatt generating sets, being fitted inside the stator or stationary section of main unit L-3. Two 350-ton cranes, joined together by means of a 60-ton lifting beam consisting of two single-trees and...
1941-06-05
2024-04-28 |
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Eight "shoes" and one 8-foot iron and steel "doughnut" make up a thrust bearing for one of the big generating sets at the Grand Coulee powerhouse. Weeks of machine work and polishing are put into making the thrust runner, the face of which must be...
1941-05-31
2024-04-28 |
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Interior view of the left powerhouse, with the installation of the thrust bearing for the 108,000 kv.-a. generator in progress in bay L-3.
1941-07-05
2024-04-28 |
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Construction Engineer A. F. Darland and Supervising Engineer F.A. Banks watching operation of main unit generator L-3, as load of 105,000 kilowatts is reached.
1941-10-03
2024-04-28 |
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Portion of penstock coaster gate, showing rollers and seal,;(first coaster gate to be installed--for unit L-3);
1941-06-19
2024-04-28 |
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Interior of left powerhouse, generator floor level at elevation 991. Embedded metal supports and fastenings for a stator are shown in the foreground.
1941-11-19
2024-04-28 |
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A view of the elevation 968 conduit and cable gallery, looking west, showing general arrangement of conduit supports and pull boxes. The steel grating covers the cable trays leading from the station-service units to the control room.
1941-08-18
2024-04-28 |
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View of the top of the vertical shaft between elevations approximately 1062 and 1250 in block 10, through which control cables extend from the control room of the left powerhouse onto the cable trays seen at the left and far right, which carry the...
1941-08-26
2024-04-28 |
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Main unit L-3 generator-voltage bus structure in the elevation 1012.5 transformer bus gallery of the left powerhouse.
1941-11-19
2024-04-28 |
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First of the huge 36,000 kv.-a. transformers to arrive at Coulee Dam. The contractor's 16-wheel trailer was used to transport the transformer from the railroad yards to the left powerhouse. The three trucks in the rear were used for additional...
1941-01-04
2024-04-28 |
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View of left powerhouse from the elevation 1180 construction trestle, showing transformer deck, transformers, portal frames, and lightning arresters at left.
1941-06-30
2024-04-28 |
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Core and coils for General Electric three-winding, 36,000 kv.-a. transformer being lifted from special 16-wheel tank car, in left powerhouse. The car body is gastight, and was filled with nitrogen while in transit.
1941-11-17
2024-04-28 |
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Giant transformer for main generating unit L-1 being moved into position on transformer deck at left powerhouse.
1941-11-26
2024-04-28 |
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Assembling transformer tie-down portal frames on the left transformer deck and lightning arresters on the face of the dam.
1941-06-25
2024-04-28 |
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Transformer tie-down portal frames and disconnecting switches on transformer deck of left powerhouse.
1941-08-06
2024-04-28 |
