The terms 'swell' and 'shrink' relate to a...

Question 1 / 270705eccefa0bacbc34ba4d47015

Question 1 of 270705eccefa0bacbc34ba4d47015

The terms 'swell' and 'shrink' relate to a change in boiler water level which __________.

Question 1 of 27070

The terms 'swell' and 'shrink' relate to a change in boiler water level which __________.

🔍 Key Concepts

• Boiler drum water level behavior when steam demand or firing rate changes • How steam bubbles in the water space affect indicated water level • Difference between mechanical problems (like erratic feed) and normal level responses to load changes

💭 Think About

• Ask yourself: When you suddenly increase or decrease steam flow, what happens to the mixture of water and steam in the drum, and how would that make the gauge glass level appear to change? • Think about whether ‘swell’ and ‘shrink’ are normal, expected reactions of the drum level to load changes, or signs of contamination or malfunction. • Consider which choice best describes a cause that would produce both an apparent rise (swell) and an apparent fall (shrink) in level without actually adding or removing much water.

✅ Before You Answer

• Verify which option refers directly to a change in steam demand or firing rate, not water chemistry. • Check which choice mentions steam bubbles changing volume and how that would affect the apparent level in the gauge glass. • Eliminate any answer that sounds like a water quality or feedwater control malfunction issue rather than a normal dynamic response.

Question 1 of 27070

The terms 'swell' and 'shrink' relate to a change in boiler water level which __________.

results when the feed rate becomes erratic during maneuvering

is due to steam bubbles below the surface occupying a smaller volume

results from a change in steam flow or firing rate

indicates a high chloride concentration in the boiler water

Question 1 / 270705eccefa0bacbc34ba4d47015

Question 1 of 270705eccefa0bacbc34ba4d47015

The terms 'swell' and 'shrink' relate to a change in boiler water level which __________.

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Question 1 of 27070

The terms 'swell' and 'shrink' relate to a change in boiler water level which __________.