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In the PWR the top houses the steam outlet, not inlet, and coolant flow is applied to the pressure vessel inlet connections.

A glass lined vessel would simply not be durable enough for a 40 or hopefully 60 year life. If it started cracking or peeling off, how would it be repaired?

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Q: Why the steam inlet at the top and coolant circulation from bottom of the reactor why we can't use the glass lined reactors for alkali reactions?
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