You have this exact same thing with airplane engine starts. Add fuel at the wrong time and the whole thing either exceeds temperature limits and has to be compl

You have this exact same thing with airplane engine starts. Add fuel at the wrong time and the whole thing either exceeds temperature limits and has to be completely taken apart or you cause a fire. The most common cause of destroyed engines is exactly like you describe for the boiler, it didn't start the first time and someone ignores the cooldown limits and/or cause of the failed start (e.g. not enough power in the batteries to get the turbine up to minimum speed before adding fuel, try again now with even less power because you used some on the first attempt)