Mitsubishi Heavy Industries Limited

Other

Takao Nishimura

Kenichiro Kino

Tsutomu Yoshida

Takahiro Ozaki

Keizo Nagasawa

Yukio Asahara

Ryuichi Masumori

Ryuji Umehara

A nuclear reactor fuel integrity monitor includes: a &#x3b3;-ray detector which detects &#x3b3;-ray of a specific radionuclide of a subject measurement medium of a nuclear reactor; a sample container which retains the subject measurement medium therein and surrounds the circumference of the &#x3b3;-ray detector; and a measurement control device which performs a control so that a predetermined amount of the subject measurement medium is introduced into the sample container and calculates a concentration of the specific radionuclide from &#x3b3;-ray data per each unit time detected by the &#x3b3;-ray detector and a volume of the subject measurement medium introduced into the sample container.

Nuclear reactor fuel integrity monitor

An object is to reduce radiation exposure in a nuclear plant. A nuclear plantis a nuclear power generating plant where steam is generated by thermal energy generated by nuclear fission of a nuclear fuelC in a nuclear reactor, and a turbineis driven by the steam to generate heat by a power generator. After a nuclear plantis newly constructed, when a primary cooling system of the nuclear reactorraises the temperature to around a power operation temperature for the first time, zinc is injected into a primary coolant Cpresent in the primary cooling system by a zinc injector

Method of operating nuclear plant

The present invention relates to a grease composition for a constant velocity joint, which has a low coefficient of friction to decrease the vibrations of CVJ, which comprises a base oil, a urea thickening agent, (A) a molybdenum dialkyldithiocarbamate, (B) at least one molybdenum di(alkyl or aryl)dithiophosphate represented by formula (I):

Grease composition for constant velocity joint

Growing community of inventors

Tokyo, Japan

Takao Nishimura