BOILER WATER TREATMENT CHART
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Too low
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Too high
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Cause /Result
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Remedy
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Cause /Result
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Remedy
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Alkalinity
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Acidic corrosion
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Dose alkaline chemical(NaOH)
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Caustic corrosion
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Blow down.
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Chloride
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Too lower the better
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Do nothing.
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Heavy scale formation.
High TDS.
Acidic corrosion.
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Identify & stop leakage.
Blow down.
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Phosphate
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Scale formation
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Add phosphate chemical.
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High TDS.
Foaming, priming&
carryover.
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Blow down.
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Conductivity / Hardness/ TDS
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Dose chemical.
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Foaming, priming&
carryover.
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Blow down.
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Hydrazine
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Oxygen corrosion.
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Dose hydrazine chemical.
Increase hot well temp.
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Ammonia attack.
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Blow down.
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Condensate
pH
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Can cause acidic.
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Cond. Control
Avoid leakage.
Increase hot well temp.
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Oil
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Improper heat transfer.
Foaming, priming &
carryover.
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Immediate scum blow down.
Oil in cascade tank.
Stop source of leak.
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