Penstock X-Ray Machine
Rating |
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Title |
Penstock X-Ray Machine |
Title Caption |
A 200,000-volt X-ray machine photographing the circumferential welded seams of a main unit penstock section. One picture covers 16 inches of the seam; the penstock liner is rotated so that successive 16-inch sections of the seam are X-rayed. The film is exposed to X-rays which have first passed through the welded seam, and any slag, gas, or lack of fusion that is present in the weld is revealed by the photograph. |
Description |
A 200,000-volt X-ray machine photographing the circumferential welded seams of a main unit penstock section. One picture covers 16 inches of the seam; the penstock liner is rotated so that successive 16-inch sections of the seam are X-rayed. The film is exposed to X-rays which have first passed through the welded seam, and any slag, gas, or lack of fusion that is present in the weld is revealed by the photograph. |
Date Original |
1939-08-10 |
Author |
United States. Department of the Interior. Bureau of Reclamation.; Messrs. Johnson and Erickson selected photographs from photographers Pomeroy, Robinson, and Russell. |
Library of Congress Subject Headings |
Penstocks--Washington (State)--Grand Coulee Dam; Steel Radiography--Washington (State)--Grand Coulee Dam |
TGM Subject |
Penstocks--Washington (State)--Grand Coulee Dam; Equipment & personnel transportation; Spillways--Washington (State)--Grand Coulee Dam |
Type |
Image |
Genre |
Photographs |
Geographic Area |
United States--Washington (State)--Grant County--Grand Coulee Dam site; United States--Washington (State)--Grant County--Grand Coulee Dam |
Identifier |
cg040b07v7p225.jpg |
Publisher |
Manuscripts, Archives, and Special Collections, Washington State University Libraries: https://libraries.wsu.edu/masc/ |
Source |
Is found in A History of the Columbia Basin Project (vol. 7, pg. 225), Cage 40, Frank A. Banks Papers https://libraries.wsu.edu/masc/finders/cg40.htm at Washington State University Libraries' Manuscripts, Archives, and Special Collections (MASC) https://libraries.wsu.edu/masc |
Rights |
http://rightsstatements.org/vocab/NKC/1.0/ |
Rights Notes |
No known copyright. Item is in public domain as it was created by the United States government. |
Digitization |
Original photographic prints were scanned at 24 bit 3000 pixels by the long side for master TIFF files on an Epson Expression 10,000 XL scanner. While 24 bit 150 PPI JPEG also created and added to the CONTENTdm database at the WSU Libraries. |
Notes |
Part of Western Waters Digital Library, http://westernwaters.org/ |
Language |
English |
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