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TECHNICAL PAPERS

The Use of “Fitness for Service” Assessment Procedures to Establish Critical Flaw Sizes in High-Pressure Gas Cylinders

[+] Author and Article Information
John H. Smith

Potomac, MD 20854

Mahendra D. Rana

Praxair, Inc, Tonawanda, NY 14151

Clark Hall

Harsco Gas and Fluid Control Group, Harrisburg, PA 17105

J. Pressure Vessel Technol 125(2), 177-181 (May 05, 2003) (5 pages) doi:10.1115/1.1565078 History: Received April 22, 2002; Revised February 05, 2003; Online May 05, 2003
Copyright © 2003 by ASME
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References

U. S. Code of Federal Regulations, 1999, Title 49-Transportation, Part 178 Specifications for Packaging Subpart C—Specifications for Cylinders, Office of the Federal Register, National Archives and Records Administration, Washington, DC.
CGA Pamphlet C-6 Standards for Visual Inspection of Steel Compressed Gas Cylinders, 1993, Compressed Gas Association, Inc., Arlington, VA, 7th Edition.
CGA Pamphlet C-1 Methods for Hydrostatic Testing of Compressed Gas Cylinders, 1996, Compressed Gas Association, Inc., Arlington, VA, 7th Edition.
API 579, 2000, “Recommended Practice for Fitness-for-Service,” American Petroleum Institute, Washington D.C., First Edition.
Exemption DOT-E-9421 (Seventh Revision), 2000, U.S. Dept. of Transportation, Washington, DC.

Figures

Grahic Jump Location
Longitudinal notch geometry used in the tested cylinders
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Rectangular LTA geometry used in the tested cylinders
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Comparison of measured RSF versus calculated RSF for tested 4500 psi cylinders
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Critical flaw sizes as a function of RSF
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Critical flaw sizes as a function of RSF for 4500 psi, 8.75 in. ID×0.26 in. wall cylinder

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