In the outage at nuclear power plant, we try to reduce radiation exposure by installing shields in the work at places of high radiation dose rate. Many of these shields consist of the sheets and plates of heavy metals, and it takes a longer time to install or remove them because heavy loads must be accompanie d. At our company, therefore, we have developed a tungsten balls charge method radiation shield system, can reduce the exposure and workload of its install ation/removal. We will further promote vari...
英字タイトル:
Tungsten balls charge method radiation shield system

Improvement of residual stress is effective in a countermeasure for the stress corrosion cracks in pipe welds. An outer surface irradiated Laser Stress Improvement Process (L-SIP) will be introduced as a method to improve residual stress inside steel pipes. This method is to improve inne r surface residual stress from tensile stress to compressive by the temperature differences between inner and outer surface, that is generated b y the irradiation of laser beam around the welds of steel pipe. Recently this...
英字タイトル:
Improvement of Residual Stress by Outer Surface Irradiated Laser Stress Improvement Process