After operating various aspects of the ammonia training system such as DX, flooded, recirculated, cascade, and water chiller, the operators in these pictures observed and controlled hot gas defrost and hot gas heating using hand expansion, dual pressure regulators, and float drainers.  The operators and instructors, including our RETA Authorized Instructor, also had thorough discussions and dialogue concerning troubleshooting and   cause / effect.  After the completion of the Operator III course, several students took the RETA’s CIRO examination. 

In last week's class, the students learned about recirculators, high pressure receivers, and thermosiphon receiver vessels and piping.  The class enjoyed taking on the task of oil pot draining.

This week's class learned the fundamentals of industrial refrigeration including compressor, condenser, pump and evaporator operation and maintenance.  The students received hands-on training and participated in live emergency response drills in IRTC's full scale ammonia refrigeration system, which is a fully functional ammonia plant on campus.