Recently, the "An Underwater Crawling Device for Nuclear Reactors" independently developed by Beijing Leiming Cyber Nuclear Equipment Technology Research Co., Ltd. (referred to as "Leiming Cyber Nuclear Equipment") has officially obtained a utility model patent from the National Intellectual Property Administration (Patent Number: ZL202520986210.6). This patent falls within the field of nuclear power plant operation and maintenance technology and provides a stable mounting and flexible mobile operation platform for various maintenance tools on the grid plates of the reactor core. The core function of this platform lies in: in high-radiation and underwater environments, it can carry maintenance tools for automatic positioning and movement. One of its typical applications is: after installing the guiding tool, it not only solves the problem of difficult loading of deformed fuel components, but also solves the problem of difficult installation and movement of traditional guiding tools, thereby greatly improving the safety, reliability and operational efficiency of the loading process. 

During the refueling and maintenance period of a nuclear power plant, the reactor pressure vessel is filled with a water layer approximately 20 meters deep (acting as a radiation shield). Under such an environment, completing the maintenance of the reactor pressure vessel and loading the fuel assemblies is a complex and challenging task. The traditional operation mode relies on manual use of long rods or steel wire ropes for operation, facing multiple challenges such as poor visibility, difficulty in controlling maintenance tools, difficult positioning, high risk of personnel radiation exposure, and vulnerability of fuel assemblies to damage. Ramon Cyber Nuclear Equipment targets the industry's pain points and successfully developed this underwater crawling device, aiming to promote the intelligent innovation of the traditional operation mode. 

This device is equipped with a crawling mechanism and has the ability to autonomously crawl underwater. It does not need to rely on the platform above the water pool or external mechanical assistance to achieve positioning and autonomous movement on the grid plates under the core. This enables the operation and adjustment of various maintenance tools to be carried out with ease. This design effectively solves the problem of difficult positioning of maintenance tools such as guiding tools in the core, significantly reducing the operational intensity and skill requirements, and avoiding damage to fuel assemblies caused by the maintenance tools. The device also effectively shortens the time that operators spend in the irradiated environment, helping to reduce the collective irradiation dose, improving the safety and reliability of maintenance operations, and providing strong support for nuclear power plants to achieve safer and more efficient major overhauls and daily operation and maintenance. 

In recent years, Raymon Cyber Nuclear Equipment has been dedicated to overcoming challenges for China's nuclear industry, focusing on technological breakthroughs and innovative research and development in the field of nuclear energy equipment. The successful development and patent authorization of this underwater crawling device fully demonstrate the company's technological innovation capabilities and its high sense of responsibility for nuclear safety. The company will continue to focus on industry front-end demands, promote the in-depth application of intelligent and remote maintenance technologies, and contribute Chinese wisdom and solutions to the safe and high-quality development of the global nuclear power industry.