scholarly journals Effect of horizontal control rods in total control compensation

1964 ◽  
Author(s):  
A.D. Vaughn
Keyword(s):  
Total Control ◽  
Control Rods ◽  
Horizontal Control

scholarly journals Minor actinides impact on basic safety parameters of medium-sized sodium-cooled fast reactor

Nukleonika ◽  
2015 ◽  
Vol 60 (1) ◽  
pp. 171-179 ◽  
Author(s):  
Piotr Darnowski ◽  
Nikolaj Uzunow
Keyword(s):  
Fast Reactor ◽  
Neutron Transport ◽  
Reactor Core ◽  
Minor Actinides ◽  
Delayed Neutron ◽  
Total Control ◽  
Negative Effect ◽  
Safety Parameters ◽  
In The Beginning ◽  
Control Rods

Abstract An analysis of the influence of addition of minor actinides (MA) to the fast reactor fuel on the most important safety characteristics was performed. A special emphasis was given to the total control rods worth in order to describe qualitatively and quantitatively its change with MA content. All computations were performed with a homogeneous assembly model of modified BN-600 sodium-cooled fast reactor core with 0, 3 and 6% of MA. A model was prepared for the Monte Carlo neutron transport code MCNP5 for fresh fuel in the beginning-of-life (BOL) state. Additionally, some other parameters, such as Doppler constant, sodium void reactivity, delayed neutron fraction, neutron fluxes and neutron spectra distribution, were computed and their change with MA content was investigated. Study indicates that the total control rods worth (CRW) decreases with increasing MA inventory in the fuel and confirms that the addition of MA has a negative effect on the delayed neutron fraction.

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