Wyniki wyszukiwania - BazTech

1

Microstructural Characterization of U-10wt.%Zr Fuel Slugs Containing Rare-Earth Elements Prepared by Modified Injection Casting

Lee Sang-Hun, Kim Ki-Hwan, Kuk Seoung-Woo, Park Jeong-Yong, Choi Ji-Hoon

Archives of Metallurgy and Materials

|

2019

|

Vol. 64, iss. 3

953--957

EN

U-10wt.%Zr metallic fuel slugs containing rare-earth (RE: a rare-earth alloy comprising 53% Nd, 25% Ce, 16% Pr and 6% La) elements for a sodium-cooled fast reactor were fabricated by modified injection casting as an alternative method. The distribution, size and composition of the RE inclusions in the metallic fuel slugs were investigated according to the content of the RE inclusions. There were no observed casting defects, such as shrunk pipes, micro-shrinkage or hot tears formed during solidification, in the metallic fuel slugs fabricated by modified injection casting. Scanning electron micrographs and energy-dispersive X-ray spectroscopy (SEM-EDS) showed that the Zr and RE inclusions were uniformly distributed in the matrix and the composition of the RE inclusions was similar to that of a charged RE element. The content and the size of the RE inclusions increased slightly according to the charge content of the RE elements. RE inclusions in U-Zr alloys will have a positive effect on fuel performance due to their micro-size and high degree of distribution.

2

Comparison of simple design of sodium and lead cooled fast reactor cores

Mazgaj P., Darnowski P., Gurgacz S., Lipka M., Dziubanii K.

Journal of Power Technologies

|

2014

|

Vol. 94, nr 5

16--25

EN

This report presents the results of a numerical simulation of thermal hydraulics processes in a liquid metal cooled fast reactor core, combined with simple neutron population computing for an infinite pin cell lattice. Two types of coolant were studied: liquid sodium and liquid lead, with all requirements regarding safety conditions observed. Temperature distributions along the cooling channel and distributions in the radial direction were prepared, then criticality calculations were performed for MOX fuel using MCNP Monte Carlo code.

3

Efficiency of the use of LTE system radio resources in highway transport environment

Gajewski S.

Archives of Transport System Telematics

|

2014

|

Vol. 7, iss. 2

40--44

EN

The paper describes the problem of analysis of throughput-coverage characteristics of the LTE system. Simulation results of the efficiency of the use of LTE radio resources are presented. Simulation studies on the basis of original model of the LTE network simulator were carried out. In addition, the evaluation of throughput for a single connection, and available capacity were evaluated in the context of the use of the same available frequency band in all cells of a cellular network. The results were also analysed in view of LTE transport applications. The results shows that from the point of view of transport applications of LTE better results on system performance gives the PFR method.