Irradiation and examinations of the second group of thermionic fuel element insulators (UCA‐2)

1991 ◽  
Author(s):  
Leo A. Lawrence ◽  
Kevin E. Ard ◽  
Anthony R. Veca ◽  
Emilio M. Giraldez
Keyword(s):  
Fuel Element

Mathematical simulation of heat transfer during fluid flow for a fuel element with a polyzonal finned shell

2017 ◽  
Vol 20 (4) ◽  
pp. 58-63
Author(s):  
K. Maksymenko-Sheiko ◽  
◽  
Yu. Litvinova ◽  
T. Sheyko ◽  
M. Khazhmuradov ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Fluid Flow ◽  
Fuel Element ◽  
Mathematical Simulation

Evaluation of Corrosion of the Dummy “EE” Plate 19 in YA Type ATR Fuel Element During Reactor PALM Cycles

2016 ◽  
Author(s):  
Jeffrey Owen Brower ◽  
Michael Vasily Glazoff ◽  
Thomas John Eiden ◽  
Aleksey Victor Rezvoi
Keyword(s):  
Fuel Element

A contribution to the 1D modelling of fuel element mechanics

1987 ◽  
Vol 101 (2) ◽  
pp. 183-192
Author(s):  
J. Šmíd ◽  
J. Svoboda
Keyword(s):  
Fuel Element ◽  
1D Modelling

Axial and Azimuthal Asymmetry of RBMK-1000 Fuel-Element Cladding Oxidation

Atomic Energy ◽  
2018 ◽  
Vol 124 (1) ◽  
pp. 36-42
Author(s):  
A. V. Sukhikh ◽  
S. S. Sagalov ◽  
S. V. Pavlov
Keyword(s):  
Fuel Element ◽  
Azimuthal Asymmetry ◽  
Fuel Element Cladding

Modeling of elastic-plastic deformation of the ring parts as applied to the analysis of the results of testing the material of the fuel-element cladding

2021 ◽  
Vol 87 (7) ◽  
pp. 67-75
Author(s):  
V. M. Markochev
Keyword(s):  
Yield Strength ◽  
Fuel Element ◽  
Yield Stress ◽  
Test Procedure ◽  
Analytical Formula ◽  
Residual Deformation ◽  
Pure Bending ◽  
Fuel Element Cladding ◽  
Current Form ◽  
Actual Yield

An analytical formula for a smooth description of the tension diagram of EK-181 steel and a method for rearranging the diagram when changing the direction of deformation are proposed for the first time. The process of straightening a quarter of an annular sample and further stretching is numerically modeled. It is shown that the conditional yield strength of the material of the straightened sample is 7.5% less than the actual conditional yield strength of steel. It is shown that the test for pure bending of a cantilever sample in the form of a semicircle with the processing of the bending diagram (by analogy with GOST 3565–80 for torsion) provides an estimate of the conditional yield strength which is 32% higher than the actual yield strength. The possibility of numerical reconstruction of the tension diagram from the diagram of pure bending of a cantilevered semi-ring sample is proved. It is shown that this procedure really gives the value of the conditional yield strength of steel EK-181 with a tolerance for the residual deformation of 0.2%. The analysis of the test procedure for the rings of fuel element cladding and the proposed algorithm for determination of the conditional yield stress of the ring material is carried out. Attention is drawn to the arbitrariness of the choice of the designed load on the two-stage diagram of the diametrical tension of the ring and to the lack of scientific substantiation of the possibility of determining the yield stress on the second part of the diagram. It is shown that this method in the current form contradicts GOST for tensile testing due to the absence of a base with a uniform stress state on the ring. Therefore, the considered method is not recommended for determining the values of the conditional yield strength suitable for strength calculations.

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