The adequate tightness of flanged joints contributes to maintaining safe working conditions in numerous equipment and industrial installations. The new sealing technologies and materials can require more careful selection, handling and installation than previous asbestos equivalents. Many research studies have been conducted to understand and improve the assembly bolt load of piping joints in order to minimize the likelihood of leakage. The selection of the bolt load must consider many factors, such as: minimum gasket stress to achieve a seal; the maximum stress that will damage the joint components and the amount of gasket stress lost to creep-relaxation under room temperature and service condition. It is well known that the bolt load decrease to some degree after the initial assembly due to creep-relaxation characteristics of the gasket. ASME PCC-1 recommends restoring the gasket load, after a minimum 4 hours, due to short-term creep-relation. This paper intends to investigate factors which may influence the creep-relaxation characteristic of the compressed non-asbestos gasket. In order to reproduce real field condition, ASME B16.5 class 300lbs flanges were used in this experimental investigation.
Skip Nav Destination
ASME 2007 Pressure Vessels and Piping Conference
July 22–26, 2007
San Antonio, Texas, USA
Conference Sponsors:
- Pressure Vessels and Piping Division
ISBN:
0-7918-4280-0
PROCEEDINGS PAPER
An Experimental Investigation of the Factors That Contribute to the Creep-Relaxation of Compressed Non-Asbestos Gaskets
Jose´ C. C. Veiga,
Jose´ C. C. Veiga
Teadit Ind. Com. Ltda, Rio de Janeiro, RJ, Brazil
Search for other works by this author on:
Carlos F. A. Cipolatti,
Carlos F. A. Cipolatti
Teadit Ind. Com. Ltda, Rio de Janeiro, RJ, Brazil
Search for other works by this author on:
Ana M. F. de Sousa,
Ana M. F. de Sousa
Teadit Ind. Com. Ltda, Rio de Janeiro, RJ, Brazil
Search for other works by this author on:
David W. Reeves
David W. Reeves
Chevron Refining Technology, Richmond, CA
Search for other works by this author on:
Jose´ C. C. Veiga
Teadit Ind. Com. Ltda, Rio de Janeiro, RJ, Brazil
Carlos F. A. Cipolatti
Teadit Ind. Com. Ltda, Rio de Janeiro, RJ, Brazil
Ana M. F. de Sousa
Teadit Ind. Com. Ltda, Rio de Janeiro, RJ, Brazil
David W. Reeves
Chevron Refining Technology, Richmond, CA
Paper No:
PVP2007-26645, pp. 269-281; 13 pages
Published Online:
August 20, 2009
Citation
Veiga, JCC, Cipolatti, CFA, de Sousa, AMF, & Reeves, DW. "An Experimental Investigation of the Factors That Contribute to the Creep-Relaxation of Compressed Non-Asbestos Gaskets." Proceedings of the ASME 2007 Pressure Vessels and Piping Conference. Volume 2: Computer Applications/Technology and Bolted Joints. San Antonio, Texas, USA. July 22–26, 2007. pp. 269-281. ASME. https://doi.org/10.1115/PVP2007-26645
Download citation file:
13
Views
Related Proceedings Papers
Related Articles
The Effect of Cylinder and Hub Creep on the Load Relaxation in Bolted Flanged Joints
J. Pressure Vessel Technol (August,2008)
A Proposed Model for Creep Relaxation of Soft Gaskets in Bolted Joints at Room Temperature
J. Pressure Vessel Technol (February,2008)
Design for Leakage in Flange Joints Under External Loads
J. Pressure Vessel Technol (May,2007)
Related Chapters
Standardization of Valves, Flanges, Fittings and Gaskets (ASME B16 Standard)
Continuing and Changing Priorities of the ASME Boiler & Pressure Vessel Codes and Standards
Pipe Flange Leakage and Stress
Applying the ASME Codes: Plant Piping & Pressure Vessels (Mister Mech Mentor, Vol. 2)
Evaluation of Flange Leakage due to Thermal Bowing and Shock
Ageing and Life Extension of Offshore Facilities