Good Evening Group. Please educate me....
Glycol and ammonia shell and tube heat exchangers.

First question: I am accustom to seeing the tubes inspected in the refining industry and chemical manufacturing plants. In ammonia refrigeration systems are you guys/gals looking inside from time to time to see the condition of the tubes - to prevent leaks?

Second questions: When A leak happens - can you get a backfeed of ammonia into the glycol system?

Third Question: What would be the symptoms of a leak in the tube?

I visit here every now and then to educate myself and not feel intimidated to ask the questions that I need to understand...I thank-you for helping me on this one....

Seaturtle....