G - Physics – 21 – C
Patent
G - Physics
21
C
358/29
G21C 19/20 (2006.01) F22B 37/58 (2006.01) G21D 1/00 (2006.01)
Patent
CA 1130479
48,390 ABSTRACT OF THE DISCLOSURE This invention provides shielded access to the irradiated heat exchanger tube bundle of a nuclear steam generator contained within a cask after removal from the generator. This tube bundle must be reduced in size and confined for removal from the containment building through hatchways of generally limited size. Access to the en- closed bundle is at the flanged joints of adjacent sec- tions forming the cask and which are vertically separated to permit an oxygen lance to be inserted therein for burning the tubes at that level. A rotatably supported annular seal ring covers the separation and shields against the escape of radiation or irradiated material during the burning process. The ring provides access ports through which roller supports are mounted on the cask and provide access of the cutting tool to the tubes. Rotation of the ring on the rollers permits the tool to be inserted completely around the cask. After the tubes within one section of the cask are severed, the tubes and that portion of the cask are removed and the ring raised to a next position where the procedure is repeated.
354692
Meuschke Robert E.
Wolfe Donald L.
Mcconnell And Fox
Westinghouse Electric Corporation
LandOfFree
Radiation shield ring assembly and method of disassembling... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Radiation shield ring assembly and method of disassembling..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Radiation shield ring assembly and method of disassembling... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-957039