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Proc. ASME. PVP2021, Volume 3: Fluid Structure Interaction; High Pressure Technology, V003T05A002, July 13–15, 2021
Paper No: PVP2021-61239
... Proceedings of the ASME 2021 Pressure Vessels & Piping Conference PVP2021 July 13-15, 2021, Virtual, Online PVP2021-61239 GENERAL METAL TO METAL STATIC SEALS LEAK TIGHTNESS OVERVIEW - R&D PROCESSES, FEA AND TESTS AND FURTHER CODE IMPLEMENTATION Przemyslaw Lutkiewicz1, David Robertson Sam (Kwok Lun...
Proc. ASME. PVP2020, Volume 3: Design and Analysis, V003T03A079, August 3, 2020
Paper No: PVP2020-21048
...Abstract Abstract In the finite element analysis of large-scale heat exchangers, the tightness analysis of tube-to-tubesheet joints of heat exchanger is classified into a highly nonlinear problem due to the existence of contact between tube and tubesheet, and there are a large number of tubes...
Proc. ASME. PVP2020, Volume 2: Computer Technology and Bolted Joints, V002T02A002, August 3, 2020
Paper No: PVP2020-21305
... then be used to estimate tightness for the gasket material using the Room Temperature Tightness (ROTT) data. If the joint is still at or above required tightness, then retorquing the joint soon after initial assembly is of little benefit. If the gasket has lost enough stress, then a retorque can bring...
Proc. ASME. PVP2020, Volume 2: Computer Technology and Bolted Joints, V002T02A018, August 3, 2020
Paper No: PVP2020-21473
...ESTIMATION OF TIGHTNESS OF BOLTED FLANGE CONNECTIONS SUBJECTED TO COMBINED LOADS OF AXIAL LOAD AND BENDING MOMENT Takashi Kobayashi National Institute of Technology, Numazu College, Shizuoka, Japan Ryosuke Nogi Advanced course National Institute of Technology, Numazu College, Shizuoka, Japan...
Proc. ASME. PVP2019, Volume 2: Computer Technology and Bolted Joints, V002T02A023, July 14–19, 2019
Paper No: PVP2019-93928
... seating stress requirements are defined as 35 MPa (5,000 psi) for Class 150, 56 MPa (8,000 psi) for Class 300 and Class 400, and 70 MPa (10,000 psi) for Class 600 and above. Three questions will be explored in this paper. First, to what tightness does the new B16.20 spiral wound gasket leakage rate...
Proc. ASME. PVP2011, Volume 3: Design and Analysis, 329-338, July 17–21, 2011
Paper No: PVP2011-57475
... Many investigations and practical experience show that the leakage failure of the tube-to-tubesheet joints is a common failure mechanism for the shell and tube heat exchangers. To systematically research the tightness of the hydraulically expanded tube-to-tubesheet joints, a three-dimensional...
Proc. ASME. PVP2008, Volume 1: Codes and Standards, 481-488, July 27–31, 2008
Paper No: PVP2008-61712
... 24 07 2009 Mechanics of flexible expansion was expounded, and technology points of uniform rubber expanding in tube-to-tubesheet joints of Zirconium (Zr) heat exchangers were introduced. A series of pull-out strength and tightness experiments were performed for rubber-expanded tube...