Process for reducing tensile welding stresses in a nozzle in a n

Induced nuclear reactions: processes – systems – and elements – Handling of fission reactor component structure within...

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376204, 29446, 72370, 228199, G21C 1300

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active

052788784

ABSTRACT:
A process is claimed for reducing tensile welding stresses in a nozzle in a nuclear reactor shell, such as a nuclear reactor head, wherein the nozzle has been welded to the nuclear reactor shell, which involves applying axial compressive loads on the free ends of the nozzle in an amount sufficient to substantially reduce the welding stresses. In some cases radial pressure can be imposed on the inner wall of the nozzle wherein the tensile welding stresses are located.

REFERENCES:
patent: 3625568 (1971-12-01), Verdier
patent: 4491001 (1985-01-01), Yoshida et al.
patent: 4612071 (1986-09-01), O'Donnell et al.
patent: 4683014 (1987-07-01), Porowski et al.
patent: 5065934 (1991-11-01), Ito
patent: 5196160 (1993-03-01), Porowski et al.

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