The questions are pretty standard. Brief introductory of oneself, Alot of current job questions here and there if you are currently employed. better dig some info on EM cause they will ask.
They do asked to define what honestly, teamwork and safety means to u. and lots of questions about ops tech job scope. eg. are you ready to get your hands dirty, are you ok with with shift work and what not. If you graduated with chemical engineering or chemical process, you better know your stuff. Its quite an interview for sure.

Best of Luck!