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Third Barrier Integrity of the Primary Circuit

In addition, in the top parts of the fuel rods of the control assembly, depleted uranium is used instead of steel to avoid high local power peaks in the uppermost fuel pellets, and to improve economics by reducing parasitic absorption (which would occur in the steel) and reducing axial neutron leakage  [Pg.39]

For the VVER market, FRAMATOME, COGEMA and Siemens joined forces in 1993 and founded European VVER Fuels GmbH, located in Offenbach/Main, Germany. The purpose of this company was to supply nuclear uranium fuel assemblies and related services for utilities operating VVER reactors. [Pg.39]

Obviously, the service equipment already installed at VVER-440 sites can be used without restrictions with TRIGON-440 fuel assemblies. [Pg.39]

In this section, we focus our attention on ensuring the structural integrity of the VVER pressure vessel via microstructure evaluation after irradiation and postirradiation heat treatment. [Pg.39]

Third Barrier Integrity of the Primary Circuit Interactions of Neutrons with Materials... [Pg.53]

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Barrier primary

Integrity of the

Primary circuit

The Integral

The Integrated Circuit

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