steam boiler

Dear all, I was wondering if there is a code or law that limit a maximum pressure for boilers used in steam power plants. Or we can design a steam boiler as large as we want! If there are such codes, please inform me. Thank you very much.

Hi there. Ive been experiencing a problem with thick green gunk gathering on the filter in the Gas Valve Thermocouple Actuated Line Interrupter (see attached). My plumber's theory is that its a dirty feed from the street. Ive had National Grid at least 10 times telling me anything but...