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How coolant flow is maintained in the event of loss of power to the PHT system? |
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Answer» When the PHT power fails, it takes two minutes for DG to come to full power. The circulation is maintained by flywheel, which increases the de-acceleration and maintains the flow for two minutes. If there is a station blackout the flow is maintained by thermo-symphoning by which more denser cold water comes down and less denser hot water goes up by convection method. |
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