Sorry for the delayed response - I was waiting on the plates to be analyzed. I have attached photos of the failures. There are multiple plates with failures in the SAME location (not close proximity, but SAME location).
The mfg is saying it is corrosion but as rmw says I can't see how it would...
Thanks for your response. Material = 316SS. Media used for cooling is food grade polypropylene glyclol. Chill from ambient to ~35 deg F. Chemicals used for cleaning are caustic (25%) and paracetic acid (not used at the same time).
Anyone ever experienced pin holes in the exact same location on different plates in a plate & frame heat exhanger? The supplier tried to tell us it was due to a chemical used in our process, but the holes were in the same spot on multiple plates - 141 out of 258 stainless steel plates.
This...
