Scavenging air pressure is provided to the...

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Question 1 of 205eccefa0bacbc34ba4d46de4

Scavenging air pressure is provided to the steam soot blowers to __________. keep steam from accumulating in the soot blowing element while another element is being operated prevent corrosive combustion gases from entering the elements when the system is secured

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🔍 Key Concepts

• Role of scavenging air in steam soot blower systems • What happens inside a soot blower element when it is not actively blowing steam • Protection of elements from corrosive combustion gases when the system is secured or another element is operating

💭 Think About

• Think about why you might want a small, continuous flow of clean air through the soot blower elements when they are not blowing steam. What problem does this prevent? • Consider the path that furnace or uptake gases would take if there were no scavenging air. Where could those gases go, and what damage could they cause? • Ask yourself whether scavenging air is more about preventing steam buildup, preventing gas ingress, or both. Which effect is actually a realistic concern in operation?

✅ Before You Answer

• Verify whether steam can realistically accumulate in an element that is not being supplied with steam • Check if corrosive combustion gases entering idle elements is a known operational issue soot blowers are designed to prevent • Confirm the primary purpose of scavenging air in the manufacturer’s or training descriptions: is it for steam management, gas exclusion, or something else?

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