Before an auxiliary boiler is shutdown for...

Before an auxiliary boiler is shutdown for...

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Question 1 of 205eccefa2bacbc34ba4d47bfd

Before an auxiliary boiler is shutdown for an extended period of time, the water in the boiler should have a pH value of __________.

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Before an auxiliary boiler is shutdown for an extended period of time, the water in the boiler should have a pH value of __________.

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🔍 Key Concepts

• pH scale and what the numbers mean for acidity vs. alkalinity • How corrosion of boiler metal is affected by pH • Typical boiler water treatment goals before lay‑up or extended shutdown

💭 Think About

• Think about whether you want boiler water slightly acidic, neutral, or alkaline to minimize corrosion when the boiler is idle. • Ask yourself: which pH range tends to protect steel surfaces instead of attacking them? • Consider which pH values on the list are clearly too aggressive (strong acid) or not optimal for corrosion control.

✅ Before You Answer

• Recall that pH 7 is neutral; values below 7 are acidic, above 7 are alkaline. • Eliminate any option that would obviously increase corrosion of steel surfaces during long shutdown. • Remember that boiler water treatment usually aims for alkaline conditions, not acidic, especially for lay‑up.

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