From October 13th to 14th, 2021, the two-day 8th International Nuclear Power Operation and Maintenance Conference was held in Shanghai. This year's operation and maintenance conference attracted more than 500 representatives from nearly 140 units, including government regulators, nuclear power operators, design institutes, inspection and maintenance service companies, operation and maintenance service providers, equipment suppliers, and scientific research institutions. They shared the top-level strategic direction of the industry and conspired to build a new pattern for the future development of China's nuclear power industry.

This year's operation and maintenance conference is organized by the Shanghai Nuclear Power Office as the organizer, Daya Bay Nuclear Power Operation Management Co., Ltd., EDF, Guangxi Fangchenggang Nuclear Power Co., Ltd., Huaneng Shandong Shidao Bay Nuclear Power Co., Ltd. as the permanent director unit, Shanghai Yingzhi Business Consulting Co., Ltd. as the organizer, State Nuclear Demonstration Power Plant Co., Ltd., Shandong Nuclear Power Co., Ltd., Shanghai Electric Group, Dongfang Electric joint stock company, Harbin Electric joint stock company, France-China Electric Power Association, Zhongyuan Operation and Maintenance Overseas Engineering Co., Ltd. as the support unit jointly organized.

The conference with the theme of "Domestic and foreign nuclear power operation and maintenance experience summary and technological innovation" has received extensive attention from colleagues in the nuclear power industry at home and abroad, focusing on "nuclear power" valves, steam turbines, electrical equipment, in-service inspection, industrial safety, radiation protection, cleaning and decontamination, and operation and maintenance tools.

Mr. Zhang Hongtao, Chief Engineer of the Shanghai Economic and Information Commission, and Mr. Lu Haibin, Secretary of the Party Group and Director of the Shanghai Nuclear Power Office, delivered speeches at the opening of the conference.

"Sharing experience, innovating technology, empowering operation and maintenance" The Shanghai Nuclear Power Office held the "Shanghai Nuclear Power" brand logo release and use license signing ceremony through the operation and maintenance conference platform. The operation and maintenance conference platform witnessed the official release of the "Shanghai Nuclear Power" brand logo with everyone.

Nuclear energy is the leading source of new and clean energy. In recent years, China's nuclear power installed capacity has continued to increase, and the number of nuclear power units under construction has remained the world's largest for many consecutive years. The overall level of nuclear power operation safety ranks among the international advanced ranks.

In order to ensure the long-term safe and stable operation of nuclear power plants and improve the safety of nuclear power facilities, it is necessary to conduct regular inspections and maintenance of nuclear power equipment, facilities (plants), and even replace certain components. The machinery of nuclear power plants (steam turbines, diesel engines, pumps, valves, pipelines), electrical (generators, transformers, switches, power distribution, motors, electric heads), instrumentation and control equipment, and other important components of nuclear power, need to be regularly inspected, repaired, and cleaned, otherwise it will affect the normal use of nuclear power facilities.

Traditional nuclear power equipment and facilities (plants) decontamination methods are mainly divided into physical decontamination methods, chemical decontamination methods, electrochemical decontamination methods, and electromagnetic vibration decontamination methods.

The shortcomings of traditional cleaning and decontamination methods:

1. High pollution to the surrounding environment and loud noise.

2. When using acids and alkalis, washing must be carried out between the two decontamination stages to lengthen the decontamination process.

3. Damage to the nuclear power equipment itself.

Compared with traditional cleaning methods, laser cleaning has the characteristics of no damage to the substrate, non-contact, and no thermal effect. It is suitable for a variety of materials and is considered to be the most reliable and effective surface cleaning method. Unlike traditional methods, laser cleaning is harmless to the human body and the environment, and is a "green" cleaning technology.

The self-developed sixth-generation ultra-high-power pulsed nuclear power special laser cleaning equipment brought by Shengtong Intelligent Laser has been optimized in module design and function improvement based on the original development experience, which can realize the surface contaminant treatment and collection of large-scale nuclear power equipment. This will further enhance the service life of large-scale nuclear power equipment, reduce environmental pollution during maintenance, and make decontamination of nuclear power plant equipment easier and cheaper.

In addition, Shengtong intelligent laser degreasing equipment (model STQX-1100F) is also deeply loved by everyone. This backpack-type laser cleaner has the advantages that traditional cleaning methods cannot replace in the maintenance of nuclear power equipment. It has high mobility, small size, easy to carry, fast cleaning speed and good effect. It can be used to clean the adhesives (rust layer, paint layer, coating, oxide layer, etc.) on nuclear power components, saving half the time and restoring the original color of the workpiece. The service life is up to 100,000 hours.

Laser cleaning uses high-frequency and high-energy laser pulses to illuminate the surface of the workpiece. The coating layer can instantly absorb the focused laser energy, causing oil stains, rust spots or coatings on the surface to be instantly peeled off. The cleaned material is easy to clean and does not damage the substrate.

Shengtong Intelligent Laser is a high-tech enterprise integrating R & D, production and sales. It owns two laser brands and several holding companies, "Shengtong" and "Chengjing". It has a number of core R & D personnel from Tsinghua University, Chinese Academy of Sciences and other famous institutions, including 3 professor-level engineers. It has established long-term and stable cooperative relations with many professional laser research institutions at home and abroad. It has more than ten years of industry experience, 53 national patent technologies, and has passed ISO9001, CE, 3A and other system certifications. It has also provided a series of complete laser cleaning solutions and related supporting facilities for domestic and foreign customers.

Shengtong Intelligent Laser has successively launched laser cleaning equipment with different power and performance, which meets the daily maintenance needs of the nuclear power industry and greatly improves the cleaning efficiency. It plays an important role in reducing energy consumption, noise and environmental pollution.

Exhibitors came to consult and learn about the cleaning equipment in an endless stream, and everyone developed a strong interest in the application of laser technology in the cleaning and maintenance of nuclear power equipment. Some brought their own products to the scene for proofing and personally operated the machine for on-site laser cleaning experience. Shentong's laser cleaning technology was well received by everyone at this exhibition, and they have a more comprehensive understanding of laser cleaning equipment and technology.

The next day, the organizing committee set up six special technical exchange seminars on valves, steam turbines, electrical equipment, in-service inspection and non-destructive testing, industrial safety and radiation protection, and decontamination and cleaning of nuclear power plant facilities for the current hot spots in the nuclear power industry. Experts from various departments of nuclear power plants worked with various enterprises to analyze various issues, share the experience of all parties, and let the supply and demand sides have in-depth exchanges on advanced technologies and difficulties and solutions in the operation and maintenance subdivision field.

Sharing experience, innovative technology, empowering operation and maintenance, on October 14, 2021, the 8th International Nuclear Power Operation and Maintenance Event came to a successful conclusion. Shengtong Intelligent Laser will continue to uphold the two core responsibilities of "innovation" and "service", not forgetting the original intention and keeping in mind the mission, adhering to the business philosophy of "winning the market with technological leadership and rewarding users with high-quality services", innovating products and refined services, integrating laser cleaning technology into the cleaning and maintenance of nuclear power equipment, making more contributions to the decontamination and cleaning of nuclear power plant facilities, and helping the rapid development of China's nuclear power industry!