unit 4 boiler operation | Questions with 100 % correct answers | Verified

When should wet layup be used? Select one: a. When a boiler may be exposed to freezing conditions. b. When a boiler is on standby. c. For long term storage. d. When desiccant is unavailable. - b In a multiple boiler high pressure steam plant, when starting an entire system from cold Select one: a. A small auxiliary heating boiler is used to warm the steam lines while the power boilers are warming. b. All the boilers are started and warmed at the same time. c. The entire system warms and pressurizes as one boiler warms, except for the boilers being left off line. d. Boilers remaining off-line must have their boiler and header stop valves open, and their non-return drain valves shut. - c Although boilers have many different ignition systems, they all follow the same sequence of steps. Which of the following is the third step? Select one: a. Main burner ignition b. Pilot ignition c. Post Purge d. Pre-purge - a A well-planned PM system will Select one: a. ensure equipment longevity. b. create less need for rounds and inspections.c. will cover only the most critical plant equipment. d. respond quickly to equipment breakdown. - a