Q. What chemicals are added for residual dissolved oxygen and carbon dioxide?

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Q. Why deaerator is installed at a certain height from the pump?

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Q. Why deaerator is not used in water cooled and moderated nuclear power plant?

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Q. What is the location of high pressure heaters?

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Q. What is the location of low pressure heaters?

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Q. Steam used to heat water comes from?

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Q. Which of the following type heater is known as deaerator?

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Q. What is the solubility of dissolved gases at boiling or saturation temperature?

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Q. In the deaerator, the feedwater is heated to the saturation temperature by the steam extracted from?

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Q. The heat exchanger after passing through which, the feedwater is sprayed from the top is called?

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Q. What kind of steam comes through the other side of the feedwater spray?

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Q. The chemical injected into the feedwater at the suction of the boiler feed pump is?

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Q. Why is Sodium Sulphite added into the feedwater at the suction of the boiler feed pump?

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Q. Name another chemical apart from Sodium Sulphite which is into the feedwater at the suction of the boiler feed pump?

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Q. Where is the deaerator placed in the feedwater system?

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Q. Why is the deaerator placement in the feedwater system so important?

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Q. Which gases are vented out of the deaerator?

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Q. Net positive suction head(NPSH) is provided because?

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Q. The output of the boiler heat pump is to?

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Q. Why is the deaerator not employed in water cooled & moderated nuclear power plant?

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