BOILING WATER REACTOR

Patent · Mon Jun 20 04:00:00 EDT 1960

OSTI ID:4795908

At boiling water reactors with natural circulation of the boiling water through the core, it has been found that the steam tends to accumulate near the exits of the reactor channels, leading to destruction of the fuel elements through overheating. In order to avoid this effect, the reactor comprises a series of elongated fuel elements immersed in the mass of the coolant-moderator constituted by water, each mounted in a general vertical direction, so that they form a reactor core having the shape of a reversed cone. The channels delimited by the fuel elements are designed so that their cross section increases as the density of the coolant flow decreases, i.e. as the coolant is evaporated. This system avoids losses of friction at the exits of the channels and increases the said natural circulation. (NPO)

• Research Organization: Originating Research Org. not identified
• NSA Number: NSA-16-015837
• OSTI ID: 4795908
• Report Number(s): FR 1237542
• Country of Publication: France
• Language: English

Related Subjects

BOILING
BURNOUT
CONFIGURATION
CONVECTION
DENSITY
FLUID FLOW
FRICTION
FUEL ELEMENTS
HEATING
NATURAL CIRCULATION
PATENT
REACTOR CORE
REACTOR TECHNOLOGY
REACTORS
STEAM
VARIATIONS
WATER COOLANT
WATER MODERATOR