高耐久ライニングによる海水系信頼性向上
概要
In nuclear power plants in Japan, seawater is used as the cooling water. The inner surface of piping for circulating the seawater to the cooling system of each facility is lined with polymeric materials such as rubber, polyethylene (PE) or epoxy resin to prevent corrosion caused by the seawater. In recent years, cases of deterioration caused by aging of the lining materials have occurred, such as cavitation erosion in high flow velocity sections, slurry abrasion, and cracking due to the deterioration of physical properties, and demand from power companies, which are the users of the equipment, for the development of a lining material with higher durability and reliability, has been increasing. Therefore, we have developed a highly-durable lining material that has higher cavitation erosion resistance and greater cracking resistance than the existing lining materials, and started applying the developed lining material to nuclear power plants in Japan as a lining material that can withstand harsh environments.
