Published January 12, 1996 | Version v1
Patent Metadata-only

A replacement process for a duct passing through the vessel bottom of a pressurized water nuclear reactor

Creators

Description

After extracting the tube to be replaced, the inner surface around the opening is machined and a hollow shell is welded on the machined surface. The shell is then bored to realize an opening for the new duct which is next welded. Application to the replacement of penetration ducts in the bottom of PWR vessels. (author). 5 refs., 4 figs

Availability note (English)

Available from Institut National de la Propriete Industrielle, Paris (France).

Additional details

Additional titles

Original title (French)
Procede de remplacement d'un tube de traversee du fond de la cuve d'un reacteur nucleaire refroidi par de l'eau sous pression

Publishing Information

Imprint Pagination
29 p.
IPC:
Int. Cl. G21c17/017; G21c13/036; G21c17/10; G21c1/08.
IPC
Int. Cl. G21c17/017; G21c13/036; G21c17/10; G21c1/08.
Patent number
FR patent document 2722326/A/

INIS

Country of Publication
France
Country of Input or Organization
France
INIS RN
28008740
Subject category
S21: SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS;
Resource subtype / Literary indicator
Non-conventional Literature
Descriptors DEI
DUCTS; GUIDE TUBES; PWR TYPE REACTORS; REACTOR MAINTENANCE; REACTOR VESSELS; REPAIR; SHELLS; WELDED JOINTS
Descriptors DEC
CONTAINERS; ENRICHED URANIUM REACTORS; JOINTS; MAINTENANCE; POWER REACTORS; REACTORS; THERMAL REACTORS; TUBES; WATER COOLED REACTORS; WATER MODERATED REACTORS

Optional Information

Secondary number(s)
FR patent application 9408426.