Power utilities in Japan have found that all their reactors use steel components made in the same way as supposedly weak French products. They are now set to check the durability of the components in question.
The utilities examined the makers and production methods of key components at the instruction of Japan’s Nuclear Regulation Authority. The results were announced on Friday.
The probe came after steel in some parts of reactor walls made in France was found to contain more carbon than it should. Steel with high carbon content can be damaged more easily.
The French products were made using the forging method. The Japanese utilities say all 46 reactors at their 18 nuclear plants used some parts made by forging.