As a result of the work from PVP2007-26387, alternative (non-traditional) Flange Assembly Procedures are being adopted for use at one large U.S. chemical producer/shipper. Based on the success of the Alternative Flange Assembly Procedures the Authors decided to further investigate the effects of Alternative Flange Assembly Procedures on Gasket Retorque Dwell Periods, specifically in a General Purpose (GP) Tank Car Hinged/Bolted Manway Connection. This ongoing work can serve as a guide to others in industry as “Best Practices” for selecting and qualifying Gasket Retorque Dwell periods using Alternative Assembly Procedures for their flanged connections for commonly used manway gasket type(s).
- Pressure Vessels and Piping
Ongoing Work With PVP2007-26387 “Determination and Qualification of Alternative Flange Assembly Procedures” and Resulting Gasket Retorque Dwell Periods Based on Alternative Flange Assembly Procedures
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Frew, JEB, Waterland, AF, III, Wyler, C, & Ragsdale, TH. "Ongoing Work With PVP2007-26387 “Determination and Qualification of Alternative Flange Assembly Procedures” and Resulting Gasket Retorque Dwell Periods Based on Alternative Flange Assembly Procedures." Proceedings of the ASME 2008 Pressure Vessels and Piping Conference. Volume 2: Computer Applications/Technology and Bolted Joints. Chicago, Illinois, USA. July 27–31, 2008. pp. 153-162. ASME. https://doi.org/10.1115/PVP2008-61398
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