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. 30, 1999
Filed:
Oct. 09, 1998
Applicant:
Inventors:
Yuuji Midorikawa, Sendai, JP;
Yoshiyuki Saitoh, Sendai, JP;
Takeshi Sakai, Izumiohtsu, JP;
Teruchika Kikuchi, Sakai, JP;
Assignees:
Tohoku Electric Power Co., Ltd., Miyagi, JP;
Nuclear Fuel Industries, Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G21C / ;
U.S. Cl.
CPC ...
376306 ;
Abstract
A mixture of metal ions is added to the primary cooling water of a water-cooled nuclear reactor to inhibit deposition of radioactive materials in the cooling water on the inner surfaces of pipes. The mixture of metal ions added to the cooling water introduced into the primary cooling system simultaneously comprises two to four of the metal ions, Mn ion, Mg ion, Ni ion and Zn ion, one of these ions being manganese ion.