If the water level as indicated by the gauge...

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Question 1 of 2066636eef28f7522a1c5204e3

If the water level as indicated by the gauge glass of an auxiliary boiler is in question, it should be blown down. Which of the following statements represents the proper procedure for performing a gauge glass blow down?

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🔍 Key Concepts

• Purpose of a gauge glass blow down (what are you trying to prove about the steam and water passages?) • Steam (upper) connection vs. water (lower) connection to the boiler and how each is tested • Why you might need to operate the valves separately rather than together

💭 Think About

• Ask yourself: During a blow down, do you want to verify that both the steam line and the water line to the glass are clear? How would you do that? • Consider what happens in the glass if only the upper (steam) side is open to the boiler with the drain open. What would you see? • Then consider what happens if only the lower (water) side is open to the boiler with the drain open. How would that look different?

✅ Before You Answer

• Make sure the procedure allows you to verify each connection independently (steam side and water side). • Check whether the option you choose uses the valves one at a time with the drain, not both at once while testing. • Confirm that the sequence you pick would clearly show a difference between steam flow and water flow through the gauge glass.

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