[j]

It would really help if you had a portfolio to show at the interview. This could just be a mock up of a tank, vessel, and a pair of pumps. Pipe it throwing in some instrumentation, valves etc. Dimension it up, Plot it off. Also do iso’s of the lines you’ve shown just to demonstrate what you know. Nobody interviewing you will expect it to be perfect but what it will do is show how keen you are. If you want someone from here to do a quick review of it prior to your interview you can PM me and I’ll throw my eye over it for you.
Good luck.
J