Question 104Steam Plants - 1st Asst/Chief
70% to passWhich of the listed mediums should be used when water washing a boiler?
ACold fresh water
BCold salt water
CHeated salt water
DHeated fresh water
AI Explanation
The correct answer is D) Heated fresh water. The reason heated fresh water is the recommended medium for water washing a boiler is that it helps to effectively remove any built-up scale or deposits within the boiler. The heated temperature helps to dissolve and dislodge these materials, allowing them to be flushed out. Using cold water would be less effective, while salt water could potentially cause corrosion to the boiler's internal components over time. The other options, A) cold fresh water, B) cold salt water, and C) heated salt water, are not recommended as they would be less effective or potentially damaging to the boiler during the washing process.
Related Questions
Q163:Valve "H" shown in the illustration, functions to _______________. Illustration ... Q199:When the rate of heat transfer through tube walls is so reduced that the metal b... Q375:Regarding main reduction gears, when high speed first reduction pinions and gear... Q328:The splits located in the halves of main reduction gear bearings are aligned at ... Q322:The labyrinth seals used on rotating steam turbine shafts reduces external leaka...
Ready to test your knowledge?
Take a Steam Plants - 1st Asst/Chief Practice ExamOfficial Resources