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Article | REF: BN3130 V2

Boiling water reactors

Author: Pierre BOIRON

Publication date: July 10, 2011

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1. Core physics. Neutronics and thermohydraulics

The boiling water reactor (BWR) core (figure 1 ) is cylindrical. Fuel rods are arranged in assemblies or casings (assemblies ranging from 7 × 7 to 10 × 10 rods), between which are inserted cruciform control rods. Flux detectors are distributed throughout the core at several levels. Antimony-beryllium neutron sources are also installed to control divergence at reactor start-up (table 1 ).

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Core physics. Neutronics and thermohydraulics
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