The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 21, 1998
Filed:
Feb. 12, 1996
Ronald Morris, North Huntingdon, PA (US);
Westinghouse Electric Corporation, Pittsburgh, PA (US);
Abstract
Method and apparatus for enhancing removal of corrosion products from a nuclear reactor piping system. A reagent is supplied into a multi-part reactor piping system to react with the corrosion products therein. The corrosion products dissolve into the reagent to define a contaminated solution. The contaminated solution is brought into contact with an ion exchange resin bed that absorbs the corrosion products from the contaminated solution to define a reagent-containing contaminant-free solution. In this regard, a circulation pump having a predetermined net positive suction head (NPSH) interconnects the system with the resin bed for pumping the contaminated solution from one part of the reactor piping system and into contact with the resin bed and thereafter pumping the contaminant-free solution from the resin bed and to another part of the reactor piping system to remove the corrosion products. Moreover, a gas injector injects a pressurized gas into the reactor system to pressurize the reactor system to a predetermined pressure necessary to maintain the NPSH during transfer of the contaminant-free solution from one part of the piping system to another part of the piping system. During each transfer, the pump brings substantially all contaminated solution into contact with the resin bed as it removes substantially all the corrosion products from the piping system.