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Title: Elevated temperature testing of gaskets for bolted flanged connections

Abstract

Bolted flanged connections are especially prone to leakage when operating at elevated temperatures. In 1986--87, the API Subcommittee on Pressure Vessels, Piping and Tanks expressed a need for gasket performance data and technical formulations to permit the design of gasket systems for high temperature service. The objective was to gain initial understanding of flange behavior, gasket deformation and leakage behavior under simulated elevated temperature service conditions. Experience gained through the previous PVRC-funded elevated temperature test programs as well as companion non-PVRC-funded programs has raised a number of basic questions which would be best answered in the context of a PVRC-supported effort. This Report summarizes the results obtained for four different topics covered in PVRC Grant No. 90-1, namely: (A) verify experimentally the extrapolated long term elevated temperature good performance of compressed asbestos reinforced sheet materials on which are based the MTI guidelines; (B) study the effect of creep/relaxation of flexible graphite sheet materials at elevated temperature on the tightness of a joint in which the gasket deflection remains practically constant; (C) study the effect of the gas medium and pressure on the tightness performance at elevated temperature of graphite filled spiral wound gaskets with and without internal rings; (D) establishmore » correlations between the weight loss of elastomer sheet gasket materials during aging at elevated temperature, and changes in their mechanical properties (tensile strength and relaxation) as well as the variations of their tightness performance.« less

Authors:
; ;  [1];  [2]
  1. Univ. of Montreal, Quebec (Canada). Ecole Polytechnique
  2. J. Payne Associates, Long Valley, NJ (United States)
Publication Date:
OSTI Identifier:
7150095
Resource Type:
Journal Article
Journal Name:
Welding Research Council Bulletin; (United States)
Additional Journal Information:
Journal Volume: 391; Journal ID: ISSN 0421-2118
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; BOLTED JOINTS; GASKETS; CONTAINERS; FLANGES; PERFORMANCE TESTING; MECHANICAL PROPERTIES; OXIDATION; PRESSURE DEPENDENCE; CHEMICAL REACTIONS; JOINTS; SEALS; TESTING; 420200* - Engineering- Facilities, Equipment, & Techniques

Citation Formats

Derenne, M, Marchand, L, Bazergui, A, and Payne, J R. Elevated temperature testing of gaskets for bolted flanged connections. United States: N. p., 1994. Web.
Derenne, M, Marchand, L, Bazergui, A, & Payne, J R. Elevated temperature testing of gaskets for bolted flanged connections. United States.
Derenne, M, Marchand, L, Bazergui, A, and Payne, J R. 1994. "Elevated temperature testing of gaskets for bolted flanged connections". United States.
@article{osti_7150095,
title = {Elevated temperature testing of gaskets for bolted flanged connections},
author = {Derenne, M and Marchand, L and Bazergui, A and Payne, J R},
abstractNote = {Bolted flanged connections are especially prone to leakage when operating at elevated temperatures. In 1986--87, the API Subcommittee on Pressure Vessels, Piping and Tanks expressed a need for gasket performance data and technical formulations to permit the design of gasket systems for high temperature service. The objective was to gain initial understanding of flange behavior, gasket deformation and leakage behavior under simulated elevated temperature service conditions. Experience gained through the previous PVRC-funded elevated temperature test programs as well as companion non-PVRC-funded programs has raised a number of basic questions which would be best answered in the context of a PVRC-supported effort. This Report summarizes the results obtained for four different topics covered in PVRC Grant No. 90-1, namely: (A) verify experimentally the extrapolated long term elevated temperature good performance of compressed asbestos reinforced sheet materials on which are based the MTI guidelines; (B) study the effect of creep/relaxation of flexible graphite sheet materials at elevated temperature on the tightness of a joint in which the gasket deflection remains practically constant; (C) study the effect of the gas medium and pressure on the tightness performance at elevated temperature of graphite filled spiral wound gaskets with and without internal rings; (D) establish correlations between the weight loss of elastomer sheet gasket materials during aging at elevated temperature, and changes in their mechanical properties (tensile strength and relaxation) as well as the variations of their tightness performance.},
doi = {},
url = {https://www.osti.gov/biblio/7150095}, journal = {Welding Research Council Bulletin; (United States)},
issn = {0421-2118},
number = ,
volume = 391,
place = {United States},
year = {Sun May 01 00:00:00 EDT 1994},
month = {Sun May 01 00:00:00 EDT 1994}
}