BOILING WATER REACTOR

Patent · Mon Aug 01 04:00:00 EDT 1960

OSTI ID:4837135

In a boiling water reactor the creation of steam bubbles during the operation induces a different depletion of fuel in the different core zones as a result of the different average moderator density caused by the steam bubbles. In order to avoid excessive differences in depletion of the fuel, the fuel elements have an elongated form, so that the average total amount of fuel (fissile and fertile) decreases along the element axis in the direction of flow of the boiling water through the core. The fuel element is provided with a uniform amount of fissile material per unit length. The local multiplication factor K/sub eff/ is held constant in this way along the path of the boiling water flow. (NPO)

• Research Organization: Originating Research Org. not identified
• NSA Number: NSA-15-032967
• OSTI ID: 4837135
• Report Number(s): FR 1241339 .
• Country of Publication: France
• Language: English

Related Subjects

BOILING
BUBBLES
BURNUP
CONFIGURATION
DENSITY
FLUID FLOW
FUEL ELEMENTS
MODERATORS
MULTIPLICATION FACTORS
PATENT
QUANTITY RATIO
REACTOR CORE
REACTOR TECHNOLOGY
REACTORS
VARIATIONS
WATER COOLANT