Wide market prospects for domestic valves

With the sustained and rapid development of China's national economy, it has placed very urgent demands on the Chinese energy industry. At present, from the urgent need to ensure China's energy security, optimize energy structure, and support the sustainable development of the national economy, China has formulated policies based on thermal power, vigorously develop hydropower, and moderately develop new energy sources, such as nuclear power and wind power. . The construction of nuclear power in China is moving from experimental and compensatory adjustment to strategic and aggressive development. This is an excellent development opportunity for China's nuclear power industry, and the huge demand for nuclear power plant valves has brought a broad market prospect to domestic and foreign valve manufacturers.

 

I. Overview of nuclear power valves

 

A nuclear power valve is a valve used in a nuclear power plant in a nuclear island N1, a conventional island CI, and a power plant auxiliary facility BOP system. From the security level, it is divided into nuclear safety level I, level II, level III, and non-core level. Among them, nuclear safety level I has the highest requirements. Nuclear power valves are used in nuclear power plants with a large number of medium conveying control equipment, which is an indispensable and important part of the safe operation of nuclear power plants. According to statistics, a nuclear power plant with two 1 million KW units has 30,000 sets of various valves.

 

With the sustained and rapid development of China's national economy, it has placed very urgent demands on the Chinese energy industry. At present, from the urgent need to ensure China's energy security, optimize energy structure, and support the sustainable development of the national economy, China has formulated policies based on thermal power, vigorously develop hydropower, and moderately develop new energy sources, such as nuclear power and wind power. . The construction of nuclear power in China is moving from experimental and compensatory adjustment to strategic and aggressive development. This is an excellent development opportunity for China's nuclear power industry, and the huge demand for nuclear power plant valves has brought a broad market prospect to domestic and foreign valve manufacturers.

 

I. Overview of nuclear power valves

 

A nuclear power valve is a valve used in a nuclear power plant in a nuclear island N1, a conventional island CI, and a power plant auxiliary facility BOP system. From the security level, it is divided into nuclear safety level I, level II, level III, and non-core level. Among them, nuclear safety level I has the highest requirements. Nuclear power valves are used in nuclear power plants with a large number of medium conveying control equipment, which is an indispensable and important part of the safe operation of nuclear power plants. According to statistics, a nuclear power plant with two 1 million KW units has 30,000 valves of various types.

 

At present, there are 447 nuclear power units in operation worldwide, with a total installed capacity of 380 million KW, accounting for 16.2% of the total global power generation. In 17 countries, the installed capacity of nuclear power plants accounts for more than 25% of the total power generation in the country. Among them, France accounted for 77%, South Korea 38%, Japan 36%, Britain 28%, and the United States 20%. Among the nuclear power plants in operation, more than 50% are pressurized water reactors, followed by heavy water reactors, boiling water reactors, graphite reactors, fast neutron breeder reactors, and high gas cooled reactors.

 

The number of valves in nuclear power plants is exemplified by the Daya Bay nuclear power plant, with 43.5% of the nuclear islands, 45% of the conventional islands, and 11.5% of the auxiliary facilities. A total of 13,000 valves are used in the nuclear island section.

 

In terms of valve configuration, the shut-off valve accounted for 33.6%, the diaphragm valve accounted for 26.2%, and the ball valve accounted for 12.8%. These three items accounted for 72.6% of the nuclear island valves. From the distribution of safety levels, only the total of the nuclear I level is only 2.3%, and the cores II and III are available.

 

At present, there are 447 nuclear power units in operation worldwide, with a total installed capacity of 380 million KW, accounting for 16.2% of the total global power generation. In 17 countries, the installed capacity of nuclear power plants accounts for more than 25% of the total power generation in the country. Among them, France accounted for 77%, South Korea 38%, Japan 36%, Britain 28%, and the United States 20%. Among the nuclear power plants in operation, more than 50% are pressurized water reactors, followed by heavy water reactors, boiling water reactors, graphite reactors, fast neutron breeder reactors, and high gas cooled reactors.

 

The number of valves in nuclear power plants is exemplified by the Daya Bay nuclear power plant, with 43.5% of the nuclear islands, 45% of the conventional islands, and 11.5% of the auxiliary facilities. A total of 13,000 valves are used in the nuclear island section.

 

In terms of valve configuration, the shut-off valve accounted for 33.6%, the diaphragm valve accounted for 26.2%, and the ball valve accounted for 12.8%. These three items accounted for 72.6% of the nuclear island valves. From the perspective of safety level distribution, only 2.3% of nuclear I grades, 52% of nuclear II and III grades, and 45.7% of non-nuclear grades.

 

The proportion of nuclear power valves invested in nuclear power plants accounts for about 1.6% of the completion price of nuclear power plants. The repair and replacement costs of nuclear power valves generally account for about 50% of the total nuclear power plant maintenance. The operating cost of nuclear power includes three parts: investment cost, operation and maintenance cost and fuel cost. The investment cost generally accounts for 57% of the operating cost of nuclear power, the operation and maintenance cost accounts for 29%, and the fuel cost accounts for 14%. The overhaul fee (total maintenance) in operating costs accounts for 10% of the operating cost of nuclear power