Boiler Operator Question: Do you know and can you comment why some cooling towers are 300 feet tall and others are like 30x30 cubicle on top of a building? Boiler Operator Interview QuestionAnswer: It depends on the type of plant and the application the tower has to deal with it. Previous QuestionNext QuestionGive us a specific example of a time when you used good judgement and logic in solving a problem?Loeffler boiler is a water tube boiler using a forced circulation of water. A. True B. False