Heat exchanger

This is the frame to the heat exchanger. You can see pipes coming in and out of the bottom left corner of the photo.

The frame is empty, normally it has a series of stainless steel plates 

These are the stainless steel plates.  Boiler oil flows on one side, and cooking oil flows on the other. The boiler oil heats the cooking oil.  Last week, several of these plates failed (developed a hole) and contaminated both the boiler oil and the cooking oil. 

The heat exchanger and the plates are all brand new.

New plates should arrive Friday, and titanium plates are on order.