Commissariat &#xc0; L'&#xc9;nergie Atomique Et Aux &#xc9;nergies Alternatives

Denis Lorenzo

Alain Ravenet

Thierry Beck

Romain Garrigue

Jean-Claude Garnier

Guy Mailhe

A mitigation assembly for a nuclear reactor including a box with an upper portion forming the head of the assembly housing an upper neutron shielding device, including a head including removable lock and a slug installed free to move in translation relative over a given travel distance, the lock being configured such that locking/unlocking between the head and the box can be made by displacement of the slug with an extraction grab with its pawls attached in the slug. The lower part of the upper neutron shielding device includes a cone-shaped sealing block with the tip of the cone oriented downwards, cooperating with a cone-shaped internal surface of the box, a sealing device being formed between the two, the assembly created forming a removable sealing plug.

Mitigation assembly for nuclear reactor comprising a removable sealing plug

A device for supporting nuclear fuel plates () with a longitudinal axis (X) including a bottom () forming a lower longitudinal end of the supporting device and a lid () forming an upper longitudinal end of the supporting device, the bottom () and the lid () being rigidly connected to each other through a central connecting means and peripheral connecting means, a plurality of upper means () for supporting the plates () attached to the lid (), and a plurality of lower means () for supporting the plates () attached to the bottom (), ensuring elastic support of the longitudinal ends of the plates () in a direction of the width (R) of the plate () and allowing free deformation of said longitudinal ends in the direction of the thickness (T) of the plate.

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Manosque, France

Denis Lorenzo