What Are Assistive Devices?

Except for the main equipment such as the reactor pressure vessel, steam generator, voltage regulator and main pipeline in the nuclear power plant primary circuit system, the remaining process equipment is auxiliary equipment. ^[1]

Hongyanhe Nuclear Power Plant Unit 1's grid connection operation went smoothly and achieved a successful grid connection, including seawater filtration and cathodic protection systems, forced air-cooled phase separation closed buses, auxiliary water supply system silencers, nuclear-level electric actuators, etc. The parameters of all equipment are normal, and the operating status of the unit is well controlled. "This signifies that the products provided by Zhongneng Equipment and its subsidiaries have reached the highest level in China and are at the leading level among international counterparts." Mao Fengfu, general manager of China Nengjian Group Equipment Co., Ltd.

In the bidding for the Hongyanhe Nuclear Power Station project, Zhongneng Equipment and its affiliated companies undertook all the nuclear power plant seawater filtration systems of 4 units, large-scale water filtering equipment drum screens, forced air-cooled phase separation closed buses, auxiliary water supply system mufflers, More than 400 nuclear-grade electric actuators, nuclear-grade pipeline prefabrication, nuclear-grade pipeline support hangers, core neutron measurement guide pipes, lateral restraints, cooling water filters, condensate water filters, cooling water bypass filters The production and supply of water equipment and other equipment is a heavy responsibility.

According to relevant statistics, in 2014 and 2015, the number of nuclear power projects that have been started in commercial operation and the number of newly started projects reached a peak. In 2014, 6 to 8 new projects were started, which doubled year-on-year in 2013, and is expected to exceed the previous "nuclear power heat". ", Ushering in the second spring of the industry. At the same time, the accelerated construction of nuclear power projects will drive 72 billion to 96 billion yuan of investment each year, of which 50% is investment in equipment.

Nuclear power restarts will lead to the release of orders for nuclear power equipment companies. A nuclear power plant has more than 300 various systems and requires tens of thousands of small and large parts / sets. China's supporting manufacturers are very fragmented and urgently need to integrate and optimize the configuration, which brings huge opportunities for domestic nuclear power equipment manufacturing related companies. . Specifically, the nuclear power industry can mainly grasp four main lines, namely nuclear islands, conventional islands, gas-water separation and auxiliary equipment.

Although in the order of actual revenue, major equipment such as nuclear islands and conventional islands are long-cycle equipment, and the return on revenue is earlier than short-cycle equipment such as auxiliary equipment, but from the perspective of order flexibility, long-cycle products generally need to start in advance18 Bidding for more than one month, and the bidding of short-cycle equipment is basically synchronized with the project start time.

As the previous cumulative projects started in the second half of 2013 and early 2014, the release of long-term equipment orders was postponed, and most of them will be released in 2014. The long-term equipment for the restart project has been tendered before 2011, and the flexibility of new orders after the restart is limited. However, the short-term equipment is basically synchronized with the start of new projects. Therefore, the obvious recovery in the number of nuclear power starts will ensure a relatively deterministic increase in orders for short-cycle equipment companies in the past 1-2 years.

Taking nuclear power valves as an example, after the Fukushima nuclear accident, the demand for nuclear power valves for nuclear power plant construction has increased significantly. In 2013, Jiangsu Shentong Valve Co., Ltd.'s nuclear power valve business realized operating income of 237 million yuan, a significant increase of 50.51% year-on-year, indicating that the nuclear power valve market has huge demand. According to industry estimates, if the additional 8.64 million kilowatts of nuclear power installed in 2014 can be realized, it will bring nearly 80 billion yuan in nuclear power equipment procurement, and nuclear power valves will be replaced in 5-8 years. Generally, original manufacturers provide spare parts. Each year, the value of single stack spare parts and equipment is 8 million to 10 million yuan, which will provide huge market opportunities for the nuclear power valve equipment market.

According to the "2014-2018 China Nuclear Power Valve Industry Market Prospect and Investment Strategic Planning Analysis Report" data released by the Foresight Industry Research Institute, China's nuclear power valve market size is about 6 billion yuan, while nuclear power valve repair and replacement costs are about 5 100 million yuan. The overall market size is small, mainly due to the small size of China's nuclear power generation, which has limited the application space of the nuclear power valve market. With the launch of a series of nuclear power units planned in the "Twelfth Five-Year Plan" period in 2014, Equipment companies engaged in related business will usher in the order release period.

In fact, domestic enterprises have mastered the design capabilities of advanced fuel assemblies required for the three-generation solution, and all the main equipment required for the solution also have independent design capabilities and manufacturing capabilities. Due to the high technical difficulty of nuclear power equipment, the main design and equipment supply of nuclear islands and conventional islands are still concentrated in the hands of a few large state-owned enterprises, while domestic companies represented by private enterprises mainly produce auxiliary equipment.

In 2013, the National Nuclear Safety Administration successively approved five subsidiaries of Zhejiang Rich Holdings, Sichuan Huadu, Zhongke Yinghua, Wuxi Huaertai Machinery Manufacturing Co., Ltd., Jiangsu Haishi Pump Manufacturing Co., Ltd., and Northeast Chenchen Mechanical and Electrical Equipment Co., Ltd. Private enterprises have obtained nuclear power auxiliary equipment design and manufacturing qualifications. In the field of nuclear power auxiliary equipment, a dominant situation will be ended, and competition among suppliers is becoming fierce.

After the site approval was passed on April 9, China Nuclear Group's Liaoning Xudabao nuclear power project has been included in the follow-up approval process by the National Nuclear Safety Administration. ^[3]