The exam is coming up soon, and I would like to ask my colleagues for some advice on basic chemical engineering operations!

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Our company has been closed for half a year due to the economic crisis. Suddenly, we received news from the head office that we need to resume operations by the end of February. As a result, the workshop will hold tests for our new employees on February 17th – there will be both written tests and practical assessments, and it’s possible that we’ll be asked to perform some basic operations on the spot. But we’re very scared right now. I would like to sincerely ask my colleagues for their advice on the following issues: 1. How to properly and completely carry out the operation of switching to a backup pump. 2. How to properly and completely carry out the operation of switching heat exchangers. 3. How to adjust a hot oil pump that has just been repaired by the maintenance team so that it can function as a proper backup unit. 4. How to fully complete the preheating process for a hot oil pump. 5. If an automatic control valve does not display flow rates, how to determine the actual cause of the problem and how to establish a procedure that allows for the repair of such valves. As someone who has just graduated from college, I may have many questions I don’t understand, but these are the ones that come to mind for now. If I think of any other questions in the future, I hope my colleagues will kindly guide me. I hope my colleagues will not hesitate to offer their guidance and provide timely solutions to the naive questions I have raised. If any of my colleagues have any other questions, I welcome their feedback as well! I would like to thank everyone first! Wish everyone a happy Lantern Festival and good luck in the Year of the Ox!