Enhancing load-following and/or spectral shift capability in sin

Induced nuclear reactions: processes – systems – and elements – With control of reactor – By coolant flow

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Details

376373, 376377, 376209, G21C 732

Patent

active

051006090

ABSTRACT:
The present invention discloses an improved methodology for achieving the desirable feature of recirculation flow control in a sparger-type natural-circulation BWR, enabling reactors utilzing the method to perform in load-following and/or spectral shift modes of power operations. In its broadest aspects, the invention is based on locating the feedwater sparger at an elevational level which is about water level established during normal operation of the BWR. One or more of load following or spectral shift can be performed by controlling the feedwater fed to said BWR through the feedwater inlet and into the sparger to vary the water level to be above, at or below the elevational level of such sparger.

REFERENCES:
patent: 3429775 (1966-06-01), Petersen
patent: 3621926 (1971-11-01), Townsend
patent: 4557890 (1985-12-01), Matsuda et al.
patent: 4877574 (1989-10-01), Suzuki et al.

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