What do you have to know before being interviewed for boilermaker?

you need to know all aspects of plate developement and structural steel marking out.

no you dont. you need to know a little about rigging. you need to know a little about piping and exchangers. Towers and steam drums. boilers and heaters. Oxygen and acetylene cylinders. you need to know about Isometrics and P&IDs. you need to know about pipe hangers and spring cans. you need to know about hydrostatic testing and blinding. you need to know about valves and gaskets. reboilers and demister pads. furnaces and some welding. lifting lugs and plate dogs. pass partitions and sight glasses. safety and math. good luck.

A complete list of all you need to know can be found on the NCCER website. Also there you can find out exactly how many questions there are for each section of the test. There are somewhere around 10 questions dealing with towers and exchangers and 10 dealing with advanced tube working. All the info can be found at the NCCER site. There are many other things to know, aside from those 20 questions