Thermal shielding system intended for the upper slab of a nuclear reactor
Creators
Description
The description is given of a device for the thermal protection of the upper shield closing a reactor vessel with respect to a hot gaseous medium topping the primary fluid of the vessel, passages being provided in the upper shield and the walls of the latter in contact with the gaseous medium being covered with a metal plate, called shield edging. The device includes a relatively thin metal ring plate which, placed horizontally under the upper shield, is provided with orifices facing the passages and marks with the edging plate of the upper shield closed spaces confining an inert gas. The internal edge of the plate and the free edges bounded in the latter by the orifices are connected to the edging plate of the upper shield through a sealing ring and the outer edge of the plate is joined by large radius connections to the edging plate of the upper shield
Availability note (English)
Available from Institut National de la Propriete Industrielle, Paris (France).Abstract (French)
On presente un dispositif de protection thermique de la dalle de fermeture de la cuve d'un reacteur vis-a-vis d'un milieu gazeux chaud surmontant le fluide primaire de la cuve, des passages etant menages dans la dalle et les parois de cette derniere en contact avec le milieu gazeux etant recouvertes par une tole metallique dite de bordure de la dalle. Le dispositif comprend une plaque metallique annulaire relativement mince qui, disposee horizontalement sous la dalle est munie d'orifices en face des passages et delimite avec la tole de bordure de la dalle des espaces fermes emprisonnant un gaz inerte. Le bord interne de la plaque et les bords libres delimites dans cette derniere par les orifices sont relies a la tole de bordure de la dalle par l'intermediaire d'une virole d'etancheite, et le bord externe de la plaque est relie par des raccordements a grand rayon a la tole de bordure de la dalleAdditional details
Additional titles
- Original title (French)
- Dispositif de protection thermique de la dalle d'un reacteur nucleaire
Publishing Information
- Imprint Pagination
- 9 p.
- IPC:
- Int. Cl. G21c13/02.
- IPC
- Int. Cl. G21c13/02.
- Patent number
- FR patent document 2309957/A/
INIS
- Country of Publication
- France
- Country of Input or Organization
- France
- INIS RN
- 10463572
- Subject category
- S22: GENERAL STUDIES OF NUCLEAR REACTORS;
- Resource subtype / Literary indicator
- Non-conventional Literature
- Descriptors DEI
- ANNULAR SPACE; CLOSURES; INERT ATMOSPHERE; PLATES; REACTOR COMPONENTS; THERMAL SHIELDS
- Descriptors DEC
- CONFIGURATION; CONTROLLED ATMOSPHERES; SHIELDS