Patent · US Expired

Method and apparatus for disposing of a radioactively contaminated steam generator

US6041484A · kind A · utility

0Cited by

4References

9Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Rainer Kunz · Wulfen, DE
Hermann Operschall · Achern, DE

Key dates

Filing date	May 7, 1998
Grant date	Mar 28, 2000
Priority date	—
Expiry date	May 7, 2018

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T29/49751
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

A method for disposing of a radioactively contaminated steam generator with a multiplicity of U-shaped heating tubes fixed in a tube plate, includes cutting off the heating tubes above the tube plate, cutting open the dome of the steam generator and gripping the heating tubes one after the other at the U-bend with force-locking measures. Once gripped, each heating tube is drawn through crushing rollers to achieve an initial reduction in size and to reduce a bend radius of the tube and is then passed into a press where it is pressed flat.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.