EFFICIENCY OF CYLINDRICAL CONTROL RODS PARTIALLY INSERTED IN A BARE REACTOR

Journal Article · Fri Sep 01 04:00:00 EDT 1961 · Nuclear Sci. and Eng.

OSTI ID:4829096

Ligou, J

An extension of the method of Nordneim-Scalettar to the case of rods partially inserted in a bare reactor is described. Axial flux harmonics are introduced. It is assumed that the extrapolation distances of the rods for thermal neutrons still have the same value whatever their insertion length may be. This extrapolation distance can be calculated especially from data relative to rods of infinite length. Calculation methods for the determination of the efficiency of rod assemblies and the distribution of thermal neutron flux are described. It should be noted that the determination of the flux distribution may require the use of many more harmonics than the determination of rod efficiency, since the results converge more rapidly in the latter case. Significant examples are given. The calculation method was programmed to be used with a BULL Gamma AET Computer. (auth)

• Research Organization: Groupement Atomique Alsacienne Atlantique, Le Plessis Robinson, France
• NSA Number: NSA-16-002709
• OSTI ID: 4829096
• Journal Information: Nuclear Sci. and Eng., Journal Name: Nuclear Sci. and Eng. Vol. Vol: 11
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ABSORPTION
COMPUTERS
CONFIGURATION
CONTROL ELEMENTS
CYLINDERS
DIFFUSION
DISTRIBUTION
EFFICIENCY
EQUATIONS
ERRORS
EXTRAPOLATION LENGTH
MATHEMATICS
NEUTRON FLUX
NEUTRONS
NORDHEIM-SCALETTAR METHOD
NUMERICALS
OSCILLATIONS
PROGRAMMING
REACTIVITY
REACTOR CORE
REACTOR TECHNOLOGY
REACTORS
RODS
THERMAL NEUTRONS
TRANSPORT THEORY