Finding UO2 Enrichment Value for MCNP5 Input File

[AlbeFerS]

Hi there,

I´m just finishing an input file for MCNP5 and I can´t find a value of density for UO2 enriched to 3,25% - 3,6%.

Does anyone know it or know where I can find it?

Thanks in advance!

(P.D.: wikipedia is not my friend... )

 

[SteamKing]

Not even

http://en.wikipedia.org/wiki/Uranium_dioxide

He seems pretty friendly.

 

[Astronuc]

The theoretical density (TD, 100% dense, or no porosity) of UO₂ is approximately 10.96 to 10.98 g/cm³, or 10960 to 10980 kg/m³. In practice, there is always some porosity in a polycrystalline pellet. For a few decades, in LWR fuel, we have used about 95% dense UO₂ (10410 kg/m³), but some fuel is made with densities > 95%, and often in the range of 96 to 97% TD (10520 to 10630 kg/m³), and in some cases in might go up to close to 98% TD. It depends on the reactor and cycle/core design.

 

[AlbeFerS]

Not even

http://en.wikipedia.org/wiki/Uranium_dioxide

He seems pretty friendly.

Thanks.
I meant that I had seen it and that I don´t trust wikipedia anymore (for this kind of data, even though this time is approximately right)

 

[Astronuc]

Thanks.
I meant that I had seen it and that I don´t trust wikipedia anymore (for this kind of data, even though this time is approximately right)

If one is doing work or school work, one should go to a textbook or other reliable source.

For nuclear fuel properties, one can use MATPRO.

I'll post some links to some technical documents once the websites are up.

The IAEA and INL have changed their websites, so old link may not be viable anymore.

IAEA Technical Documents (TECDOCs) are available here:
http://www-pub.iaea.org/books/IAEABooks/Series/34/Technical-Documents

See -
http://www-pub.iaea.org/books/IAEAB...and-Fuel-Rod-Design-for-Water-Cooled-Reactors

Specifically - http://www-pub.iaea.org/books/IAEAB...Light-Water-Reactors-and-Heavy-Water-Reactors
Section 6.1.1.10 Density of Solid UO₂

 

[AlbeFerS]

I´ll check it out.

Thank you again.

 

[Astronuc]

I´ll check it out.

Thank you again.

See also these earlier publications -
http://www-pub.iaea.org/MTCD/publications/PDF/IAEA-THPH_web.pdf

http://www-pub.iaea.org/MTCD/publications/PDF/te_949_prn.pdf