Reactor head with integral nozzles

Details Reactor head with integral nozzles Reactor head with integral nozzles

2005-05-03

2005-05-03

Carone, Michael J. (Department: 3641)

Induced nuclear reactions: processes, systems, and elements

Seal arrangements

Between pressure vessel cover and vessel or portion thereof

C376S294000, C376S203000

Reexamination Certificate

active

06888908

ABSTRACT:
A reactor closure head assembly has guide tube nozzles which are integral with the reactor closure head. A dome-shaped forging having a concave surface is prepared with extra thickness equal to or greater than the desired nozzle height. Nozzles having bores therethrough are machined opposite the concave surface. Weld buttering is applied to the ends of the nozzles, the concave surface is clad with a corrosion resistant layer, and the forging is then heat treated. A guide tube flange is attached to the ends of the nozzles. The surfaces of the nozzle bores are covered with a protective layer which is preferably applied without heating, for example by electrochemical deposition, thereby avoiding the need for subsequent post weld heat treatment.

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