Apparatus and method for inerting and venting the...

Details Apparatus and method for inerting and venting the... Apparatus and method for inerting and venting the...

G - Physics

21

C

G21C 13/02 (2006.01) G21C 9/004 (2006.01) G21D 1/02 (2006.01)

Patent

CA 2230900

When hydrogen is generated within the containment (8) of a nuclear power station, its containment atmosphere (CA) must be inerted. In order to avoid a pressure buildup within the containment (8) when inerting of this type is carried out, an apparatus and a method are specified which make it possible to bleed (vent) the containment atmosphere (CA) simultaneously. For this purpose, according to the invention, a reversible activity holdup device (4, 4') is provided, which makes it possible to vent the containment atmosphere (CA), without radioactive material being released into the surroundings. It is thereby also possible for the containment (8) of a nuclear power station to be inerted even prophylactically, so that the safety of the nuclear power station plant is markedly increased.

En cas d'apparition d'hydrogène à l'intérieur l'enceinte de confinement (8) d'une centrale nucléaire, il convient de rendre inerte l'atmosphère de l'enceinte de confinement (CA). Pour éviter, lors d'une telle opération, une montée en pression à l'intérieur de l'enceinte de confinement (8), l'invention propose un dispositif et un procédé permettant de purger (venting) simultanément l'atmosphère de l'enceinte de confinement (CA). L'invention concerne également un dispositif de rétention de l'activité nucléaire (4,4') réversible qui autorise une purge de l'atmosphère de l'enceinte de confinement (CA) sans que le matériel radioactif ne soit libéré dans l'environnement. Par conséquent, l'opération consistant à rendre inerte l'atmosphère de l'enceinte de confinement (8) d'une centrale nucléaire peut également constituer une mesure prophylactique de telle façon que la sécurité de la centrale nucléaire s'en trouve considérablement améliorée.

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