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:
Nov. 08, 2011
Filed:
Dec. 17, 2007
Luong Cam Tran, San Jose, CA (US);
Thomas P. Diaz, San Martin, CA (US);
Samson Hettiarachchi, Menlo Park, CA (US);
Paul Y. Shu, San Jose, CA (US);
David P. Siegwarth, San Jose, CA (US);
Luong Cam Tran, San Jose, CA (US);
Thomas P. Diaz, San Martin, CA (US);
Samson Hettiarachchi, Menlo Park, CA (US);
Paul Y. Shu, San Jose, CA (US);
David P. Siegwarth, San Jose, CA (US);
GE-Hitachi Nuclear Energy Americas LLC, Wilmington, NC (US);
Abstract
An injection system designed to deliver a chemical solution into a reactor through feedwater system taps during normal operating condition of a power reactor is disclosed. The process of delivery is via positive displacement pumps. Injection of chemical is in a concentrated solution form, which is internally diluted by the system prior to discharging from the skid. The injection system minimizes chemical loss due to deposition on the transit line, enables a higher concentrated solution to be used as the injectant, eliminates the time consuming laborious process of chemical dilution, raises chemical solution to the pressure required for injection, prevents solid precipitations out of solution at the injection pump head through the use of a flush solution, and deposits fresh chemical on new crack surfaces that develop during a power reactor start-up, shutdown and operation.