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:
Mar. 14, 1995
Filed:
Oct. 14, 1992
Hidefumi Ibe, Katsuta, JP;
Masanori Takahashi, Mito, JP;
Yasuko Aoki, Hitachi, JP;
Yamato Asakura, Katsuta, JP;
Makoto Nagase, Hitachi, JP;
Noriyuki Ohnaka, Katsuta, JP;
Masanori Sakai, Hitachi, JP;
Takashi Saito, Katsuta, JP;
Katsumi Ohsumi, Hitachi, JP;
Kazuhiko Akamine, Katsuta, JP;
Makoto Hayashi, Hitachi, JP;
Kiyotomo Nakata, Katsuta, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A water chemistry factor which is specific to a specific portion of a primary cooling system and universal is decided to be a standard target. The concentration of an agent for mitigating corrosion damage of structural material of the primary cooling system is controlled so that the target will be in a desirable range. All sensor groups provided in the primary cooling system are separated into sensor groups in different lines, of which a specific sensor group are connected to an arithmetic unit and a data base and are for always monitoring a plant process. For example, concentration distribution agreed with measured value oxidation component in the reactor water at the measurement points is selected from the data base, and it is used to estimate the standard target.