The steam soot blower piping should be...

🔍 Key Concepts

• Purpose of steam soot blowers and what happens when steam lines contain condensate (water) instead of dry steam • Effects of high-velocity wet steam on boiler components inside the furnace and gas passages • Where soot blower steam is directed: onto boiler tubes, refractory, and gas-side surfaces

💭 Think About

• Think about what is actually flowing through the soot blower when it is first opened, if the line has not been drained: is it dry steam, water, or a mixture? • Consider what high‑pressure water droplets or slugs of water would do if they were suddenly ejected at boiler internal surfaces. • Compare which choice best matches physical damage that could occur quickly from wet steam or water impact, rather than a slow operational issue.

✅ Before You Answer

• Verify which option describes mechanical damage from impact/abrasion rather than normal operating losses or fouling. • Ask yourself which component (fuel flame, feedwater system, nozzles, or furnace lining) is directly exposed to the soot blower jet. • Confirm which effect would be most serious and immediate during the first moments of soot blower operation if the line is not properly drained.

The steam soot blower piping should be thoroughly drained before operating to prevent __________.

accidental flameout

feed water losses

nozzle plugging

erosion of refractory

🔍 Key Concepts

💭 Think About

✅ Before You Answer