In article , Jim Stewart says...

Didn't work at Three Mile Island....

It would have if they had closed the relief valve
and took a look at their steam tables...

The pressurizer level indicator was hidden behind a huge
bunch of stuff, most of which they didn't need to look
at.

But your point is well taken - if they had done a
bunch of different stuff, the core would not have
slumped.

But they didn't. And it did.

Therefore the secondary cooling system did fail. It
failed because it was turned off, granted. Because
of the lack of appropriate human engineering it did not
work.

The same problem could crop up with a steam boiler
secondary cooling system.

Jim


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