(Fighting against New Coronary Pneumonia) All the internal components of the second overseas unit of Hualong No. 1 have been installed
China News Agency, Beijing, April 5 (Reporter Yan Xiaohong) China National Nuclear Corporation revealed on the 5th that at 10:18 local time on April 4 local time, Hualong No. 1 overseas demonstration project-Pakistan Karachi K-3 unit lower reactor internal components Three successful exits of the reactor marked the completion of the installation of the internal components of the K-3 unit. During the assembly and adaptation to the pressure vessel, all the assembly and installation dimensions met the design requirements for the subsequent flushing of the K-3 unit nuclear circuit and The cold test and other nodes laid a solid foundation.
The internal components of the reactor are the core components in the reactor pressure vessel. They are manufactured and assembled with high precision. They mainly provide reliable support and accurate positioning for fuel and related components. They bear the full load of the core components and are transferred to the reactor pressure vessel to provide protection for the control rod components. And guide, provide a flow channel for the coolant in the stack, etc. At the same time provide a heat shield for the pressure vessel, reduce exposure to neutrons and r rays, reduce radiation damage and other effects.
It is reported that for large-scale equipment, the installation process of the internal components of the stack is not only complicated, but also the precision of on-site processing and assembly is extremely high. CNNC Zhongyuan K-2 / K-3 project department leads and organizes all units on the site to carefully deploy and take the initiative to prevent epidemic. The main goal is to promote self-reliance and create conditions to promote the progress of the project on the premise of ensuring the quality and progress of the K-2 project. The unit, China Nuclear Five, worked closely with each other to coordinate and resolve various constraints. It summarized and learned the experience of assembling and installing the internal components of the K-2 unit. From the unpacking of the equipment to the successful completion of the internal component assembly and adaptation to the pressure vessel After 115 days, the duration of the K-2 project was shortened by 25 days. (Finish)