1. In a bubbling fluid bed (BFB) boiler, what operating procedures are different from a conventional boiler? What additional instrumentation is required? 2. What should an operator do if the water...

1. In a bubbling fluid bed (BFB) boiler, what operating procedures are different from a conventional boiler? What additional instrumentation is required? 2. What should an operator do if the water drops below the minimum required? 3. What procedures should be followed in the case of tube failures? What modern technology is available to determine tube leaks? 4. If an induced-draft fan fails, describe the system that safely shuts the boiler down.