Haiyang Nuclear Power Unit 3 nuclear island plant 656 tons of "big block" hanging in place

At 12:39 on September 25th, Haiyang Nuclear Power Unit 3 nuclear island safety shell bottom sealing module was lifted in place. This is the first large module hanging on the nuclear island reactor plant No. 3. The curtain of the peak.

The safety shell is a steel pressure vessel with an inner diameter of 39.62 meters and a height of 65.67 meters. It is composed of the cylindrical cylindrical body and the top ellipsoid headquarters in the middle. It is the third safety barrier to prevent radioactive substance leakage. The sealing head of the safety shell as the first hanging component of the safety shell is welded by 64 arc -shaped steel plates, weighing 656 tons, and the total weight of the lifting is nearly 754 tons. This time, it was lifted at 10:17. After the hook, turning, carriers walking, and hooking, it lasted 2 hours and 22 minutes, and it was smooth at 12:39.

As the world's advanced third -generation three -generation pressure pile nuclear power unit, this time the lifting of finite element analysis software is used for modeling in advance, the development of stress analysis is carried out, the risk of intervention in place in advance is identified and dealt with. Ensure that the suspension is balanced and further ensure the safety of lifting. (YMG All -Media reporter Pang Lei Correspondent Cheng Yatang Fu Duo Photography Report)

- END -