Heat Exchangers Hammering? Tube Bundles Fouling and Failing?

Do you have heat exchangers (i.e. Reboilers) HAMMERING and/or losing tubes like this heat exchanger?  

This device is not evacuating condensate, thus the significant temperature differential.  This backing up of condensate in the heating space reduces surface area AND poses a potential for thermal and hydraulic shock that will damage tubes, create leaks and destroy equipment.  It also reduces throughput and can impact product quality.