Uranium products

RBMK Erbium alloyed pellets

Item
Specification
Conventional U-235, % 2.6
2.8
U isotopes, %
>87.9*
Total Hydrogen, %
<0.00006
Summary Boron Equivalent (SBE), %
<0.0002
Density, g/cm3
10.4 - 10.7*
Sintering test (thermal stability of dimensions), %
0.0 - 0.4*
Volume fraction of open pores, %
<0.5*
Average grain size, mm
10 - 25*
Maximum diameter of an individual pore as a microsection metallographic specimen, mm
100
Fraction of pores with effective size of 1 to 10 mm observed in the microsection metallographic specimen, %
>85*
Total impurities, %
0.2*


* Specification could be revised upon the Customer's request.


Impurity, ppm to U, max
Element Specification Element Specification
Boron (B) 0.3 Aluminum (Al) 30
Iron (Fe) 150 Calcium (Ca) 50
Silicon (Si) 30 Magnesium (Mg) 10
Manganese (Mn) 3 Tungsten (W) 50
Copper (Cu) 5 Vanadium (V) 30
Nickel (Ni) 40 Cadmium (Cd) 0.3
Chromium (Cr) 50 Molybdenum (Mo) 30
Nitrogen (N) 30 Phosphor (P) 35
Carbon (C) 20 Gadolinium (Gd) 1.5
Fluorine (F) 5 Zinc (Zn) 50
Chlorine (Cl) 5 Erbium (Er)*  


* Erbium value shall meet specification of the Customer


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