The breaking down reasons of the small float head bolts in an acid stripping unit and primary exchanger for feed water are analyzed.

Internal expansion joint shall be adopted to single tube side float head heat exchanger for avoiding from large temperature difference stress, when design pressure on shell side is larger.

Capture all your thoughts on paper (or digitally) - don't let them float around in your head, where they will surface at inappropriate times, stress you out and be forgotten when they are needed.