What primary operational issue is addressed by boiler feed water conditioning__________________?
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Answer: E. all of the above
Explanation
Boiler feed water conditioning uses specific chemical treatments to neutralize dissolved oxygen and control pH levels, preventing corrosion. Antiscalant chemicals and water softeners bind calcium and magnesium ions to prevent hard mineral scale deposits on heat transfer surfaces. Proper conditioning manages total dissolved solids and alkalinity to eliminate caustic embrittlement and foaming carryover issues. Unconditioned feed water introduces impurities that concentrate rapidly inside high-pressure boiler drums as pure steam evaporates continuously. Scale acts as a thermal insulator that causes localized overheating, tube ruptures, and catastrophic pressure vessel failures. Carryover occurs when water droplets or impurities are swept into the steam line, damaging downstream turbine blades and valves.
Options A, B, C, and D each represent individual critical operational problems that occur if water conditioning is neglected. Selecting only corrosion or scale would ignore the equally hazardous risks of carryover and caustic embrittlement in boilers. Therefore, all the listed operational issues must be addressed simultaneously, making the comprehensive option the correct choice.
- Subject
- Engineering
- Category
- Mechanical Engineering
- Topic
- —
- Difficulty
- medium
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