Excessive priming in a propulsion boiler can...

Question 1 / 270705eccefa0bacbc34ba4d46f6e

Question 1 of 270705eccefa0bacbc34ba4d46f6e

Excessive priming in a propulsion boiler can cause severe damage to the_________.

Question 1 of 27070

Excessive priming in a propulsion boiler can cause severe damage to the_________.

🔍 Key Concepts

• Boiler priming and what carries over with the water during priming • Function and location of an integral superheater in a propulsion boiler • How moisture or water droplets in steam affect turbine blades and casings

💭 Think About

• When priming occurs, what exactly is being carried into the steam lines, and how does this differ from normal dry saturated steam? • Think about which components (superheater or turbine) are directly exposed to the steam flow, and how liquid water in that steam might affect them mechanically and thermally. • Would damage from wet steam be limited to one part of the system, or could it extend further downstream? Why?

✅ Before You Answer

• Be clear on the definition of priming (water carryover vs. just pressure fluctuation). • Visualize the steam path: drum → superheater → main steam turbine. Which parts see the steam first, and in what condition? • Consider how erosion, thermal shock, or overheating could occur if water droplets are present where only dry steam is expected.

Question 1 of 27070

Excessive priming in a propulsion boiler can cause severe damage to the_________.

integral superheater

main steam turbine

Both A and B

Neither A nor B

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