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Installation Of Scroll Case (Installation of turbines and generators) Item Info

The 190-ton scroll case for 103,000 horsepower Allis-Chalmers hydro turbine unit being installed in the west powerhouse at Grand Coulee Dam. This unit consists of several radial and on straight section of welded plate steel riveted with double butt straps. One half of combined unit is lifted by an overhead crane and moved into position. Before being poured in concrete, the scroll case is given hydraulic test of 310 pounds to the square inch. This scroll case, designed for use at Shasta Dam in northern California, is temporarily installed at Grand Coulee Dam by order of the War Production Board, as construction at Shasta Dam had not progressed sufficiently to make immediate use of turbine at that point. With the waters of the mighty Columbia River as a driving force, this turbine now installed is spinning a giant generator at a rate of 138.5 revolutions per minute, producing more than 75,000 kilowatts of electrical energy.
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Title:
Installation Of Scroll Case (Installation of turbines and generators)
Creator:
United States. Army. Corps of Engineers.
Date Created:
1942-07-11
Description:
The 190-ton scroll case for 103,000 horsepower Allis-Chalmers hydro turbine unit being installed in the west powerhouse at Grand Coulee Dam. This unit consists of several radial and on straight section of welded plate steel riveted with double butt straps. One half of combined unit is lifted by an overhead crane and moved into position. Before being poured in concrete, the scroll case is given hydraulic test of 310 pounds to the square inch. This scroll case, designed for use at Shasta Dam in northern California, is temporarily installed at Grand Coulee Dam by order of the War Production Board, as construction at Shasta Dam had not progressed sufficiently to make immediate use of turbine at that point. With the waters of the mighty Columbia River as a driving force, this turbine now installed is spinning a giant generator at a rate of 138.5 revolutions per minute, producing more than 75,000 kilowatts of electrical energy.
Subjects:
power plants in Washington state (Grand Coulee Dam) installation of turbines and generators
Location:
Washington (State) Grant County Grand Coulee Dam
Latitude:
47.954567
Longitude:
-118.99734
Publisher:
University of Idaho Library Digital Initiatives, http://www.lib.uidaho.edu/digital/
Source:
Army Corps of Engineers Dam Construction photographs, 1933-1965, PG 94, University of Idaho Library Special Collections and Archives
Finding Aid:
https://archiveswest.orbiscascade.org/ark:80444/xv165618
Source Identifier:
94-3-10383
Type:
Image;StillImage
Format:
image/jpeg

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Source
Preferred Citation:
"Installation Of Scroll Case (Installation of turbines and generators)", Columbia River Basin Project: Dam Construction in the Pacific Northwest, University of Idaho Library Digital Collections, https://www.lib.uidaho.edu/digital/crbp/items/crbp1015.html
Rights
Rights:
In copyright, educational use permitted. Educational use includes non-commercial reproduction of text and images in materials for teaching and research purposes. For other contexts beyond fair use, including digital reproduction, please contact the University of Idaho Library Special Collections and Archives Department at [libspec@uidaho.edu](mailto:libspec@uidaho.edu). The University of Idaho Library is not liable for any violations of the law by users.
Standardized Rights:
http://rightsstatements.org/vocab/InC-EDU/1.0/
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