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Men Carry Bolts (Installation of turbines and generators) Item Info

Bolts and nuts weighing 193 pounds, couple the sections of the shafts for the two 75,000 kilowatt Shasta generators being installed in the Grand Coulee Dam left powerhouse. The bolts are five inches in diameter and 25 inches long. Each section of the two part shaft is provided with a flange, in which 16 holes have been bored. The bolts will be inserted in these openings, and the nuts, weighing 37 pounds each, attached. To tighten these, a huge steel wrench, three feet long, turned by the blows from a heavy sledge hammer, will be used. Before being seated, the bolts will be cooled to 80 below zero, and shrunk, in a compartment filled with dry ice. While in their contracted form, they will be inserted in the openings in the flanges of the shaft. When their temperature again rises and matches that of the surrounding atmosphere, the fit will be as near perfect as engineers are able to make it.
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Title:
Men Carry Bolts (Installation of turbines and generators)
Creator:
Fuller, H.W.
Date Created:
1942-12-29
Description:
Bolts and nuts weighing 193 pounds, couple the sections of the shafts for the two 75,000 kilowatt Shasta generators being installed in the Grand Coulee Dam left powerhouse. The bolts are five inches in diameter and 25 inches long. Each section of the two part shaft is provided with a flange, in which 16 holes have been bored. The bolts will be inserted in these openings, and the nuts, weighing 37 pounds each, attached. To tighten these, a huge steel wrench, three feet long, turned by the blows from a heavy sledge hammer, will be used. Before being seated, the bolts will be cooled to 80 below zero, and shrunk, in a compartment filled with dry ice. While in their contracted form, they will be inserted in the openings in the flanges of the shaft. When their temperature again rises and matches that of the surrounding atmosphere, the fit will be as near perfect as engineers are able to make it.
Subjects:
power plants in Washington state (Grand Coulee Dam) installation of turbines and generators
Location:
Washington (State) Grant County Grand Coulee Dam
Latitude:
47.955529
Longitude:
-118.98828
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:
94-3-10940
Type:
Image;StillImage
Format:
image/jpeg

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Source
Preferred Citation:
"Men Carry Bolts (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/crbp1022.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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