We recommend a vacuum based leak detection system for several reasons:

Reason #1: No risk of liner bulging

A first reason is that when using a vacuum system there will be no risk for liner bulging and damage due a to too high pressure in the leak detection system behind the liner. Be aware that the relatively large liner compartments are welded to the carbon steel pressure bearing wall. These large areas allow only a very limited pressure difference between each side of the liner.

Some vendors try to avoid this risk of bulging by switching off the leak detection system when the pressure in the synthesis section is below a certain value. In our view this is not a good solution because…

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