In a paper presented in 1994 [1], the authors examined a heat exchanger flange to ascertain the cause for a leak. This examination was conducted using Finite Element (FE) analysis procedures. At that time, it was not practical to accurately model the interaction between the flanges and gaskets as a function of time and the resultant temperature. In the ensuing time period, the available FE technology has improved dramatically. Faster computers and new parallel solver technology allow modeling of the flange components that was not practical 10 years ago. In this paper, the authors will re-examine the exchanger system using current technology and discuss the improved insight that this new technology provides to the problem solution.

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