D0 Cryo-Corner Piping Flexibility Analysis

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Description

Table 1 indicates that the stiffest line is the cryogenic vent line while the most flexible line is the 6 inch insulating vacuum line. The table also shows that the four remaining lines are roughly of the same stiffness. This follows closely with the experience of installing the U-tubes in the assembly hall. The vent line was by far the stiffest, while the other lines are comparitively more flexible. However, the value for the LAr line is misleading. It is as flexible as the other 1 1/2 x 3 lines. Using this as a basis, the collision hall connections should ... continued below

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13 pages

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Clark, D. August 20, 1991.

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Description

Table 1 indicates that the stiffest line is the cryogenic vent line while the most flexible line is the 6 inch insulating vacuum line. The table also shows that the four remaining lines are roughly of the same stiffness. This follows closely with the experience of installing the U-tubes in the assembly hall. The vent line was by far the stiffest, while the other lines are comparitively more flexible. However, the value for the LAr line is misleading. It is as flexible as the other 1 1/2 x 3 lines. Using this as a basis, the collision hall connections should be slightly more stiff, but not appreciably. The vent line represents the only anticipated 'difficulty'. Provided that the building piping is constructed to reasonable tolerances, there should be no need to modify the existing U-tubes for use in the Collision hall. The analysis makes many assumptions which are not completely valid. For example, the inner line is much more flexible than the table indicates. Thus the analysis should not be taken as an absolute measure of the amount of force necessary to deflect the lines. The analysis does provide a means of comparison between individual lines and between the assembly hall and collision hall. The last column in tables 1 and 2 indicate which lines are the stiffest comparatively. In addition, by comparing the stiffness of each line in the collision hall with the corresponding line in the assembly hall, a qualitative assesment can be made as to whether the lines in the collision hall are flexible enough.

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13 pages

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  • Report No.: FERMILAB-D0-EN-320
  • Grant Number: AC02-07CH11359
  • DOI: 10.2172/1031760 | External Link
  • Office of Scientific & Technical Information Report Number: 1031760
  • Archival Resource Key: ark:/67531/metadc834564

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • August 20, 1991

Added to The UNT Digital Library

  • May 19, 2016, 3:16 p.m.

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  • Aug. 30, 2016, 4:02 p.m.

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Clark, D. D0 Cryo-Corner Piping Flexibility Analysis, report, August 20, 1991; Batavia, Illinois. (digital.library.unt.edu/ark:/67531/metadc834564/: accessed January 19, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.