Method for sealing a stub tube in a nuclear reactor

Details Method for sealing a stub tube in a nuclear reactor Method for sealing a stub tube in a nuclear reactor

1997-02-14

1998-08-18

Wasil, Daniel D.

Induced nuclear reactions: processes, systems, and elements

Handling of fission reactor component structure within...

376203, 376292, 2940207, G21C 13028

Patent

active

057967970

ABSTRACT:
A method for sealing cracks adjacent stub tube attachment welds in a reactor pressure vessel of a nuclear reactor is described. The reactor pressure vessel includes at least one stub tube through which a control rod housing extends. The control rod housing is attached to one end of the stub tube with an upper stub tube attachment weld. A sidewall of a control rod drive housing is cut at a location below the upper stub tube attachment weld to separate an upper portion of the control rod housing from a lower portion of the control rod housing. The lower portion of the control rod drive housing is removed from the bottom head opening, and a replacement lower portion is positioned in the bottom head opening proximate to the remaining upper portion. The replacement lower portion then is secured to the reactor pressure vessel without securing the replacement lower portion to the remaining upper portion of the control rod drive housing.

REFERENCES:
patent: 4440339 (1984-04-01), Tamai et al.
patent: 5209894 (1993-05-01), Borrman et al.
patent: 5267279 (1993-11-01), Saito et al.

Affiliated with

Also associated with

Rating

Method for sealing a stub tube in a nuclear reactor does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for sealing a stub tube in a nuclear reactor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for sealing a stub tube in a nuclear reactor will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1122784