Development of domestic nuclear valves started in the early 60's. Up to now, after decades of efforts, China has formed a certain scale nuclear valves design, manufacture, experiment, testing ability, provide non-nuclear grade valves a and for a period, the construction of two Qinshan nuclear power plant, made important contribution to the localization of nuclear power valve.
Nuclear power valve is in the nuclear island N1, plunger pump CI and the conventional island power station auxiliary facilities BOP valves in the system. From the nuclear safety grade is divided into nuclear safety grade, stage, grade, non-nuclear grade, the nuclear safety requirements of the highest. Nuclear power valve is used in nuclear power plants a large number of medium transport control equipment, is the essential part of the safe operation of nuclear power plant.
According to the statistics with a two set of 1000000 KW units of the nuclear power plant has 30000 units of various types of valves. The pneumatic control valve configuration situation, 33.6% cut-off valve, diaphragm valve, ball valve of 12.8%. accounted for 26.2% of the three items accounted for nuclear valve 72.6%. distribution from the level of security, nuclear grade only 2.3%, nuclear, class total 52%, rather than the nuclear grade accounted for 45.7%.
The proportion of investment in nuclear power valve in nuclear power plants in the nuclear power plants accounted for about 1.6% of the completion of price. The completion of price $3500000000 according to the calculation of Ling Ao nuclear power station two million KW unit, valve investment of $56000000, equivalent to about 460000000 yuan rmb. According to the national nuclear power development plan, by 2020, new nuclear power plants valves will reach a total investment of about 7000000000 yuan (if the material and take into account the price rises will reach nearly 100 million yuan). Such a huge market, provides a good opportunity for the development of China's valve industry, but also for China's valve industry in a severe test.
According to the current situation of China's nuclear power development situation and the development of nuclear power valve, to achieve the rapid development of nuclear power, nuclear localization of the valve, the valve business, personal think Chinese industries and countries should take measures to solve several problems affecting the localization of nuclear power valve.
1 as soon as possible to improve nuclear power valve technology standards and norms in china. The existing EJ, GB, ASME, RCC-M standard complements, in line with national conditions, to improve operability, in order to facilitate the domestic nuclear power valve localization can be achieved in the design, manufacture, inspection and other links on material.
2 the integration of the domestic nuclear power industry valve valve test, detection and identification of equipment and capabilities, the sharing of resources, avoid duplication of investment, redundant construction, accelerate the development of nuclear power valve speed.
3, strengthen personnel training and the digestion and absorption of imported technology. To improve the design ability and level of nuclear electric regulating valve.
The 4 increase in investment in software and hardware, guarantee the design, manufacturing methods and advanced processing and machine parts assembly, reliable quality.
5, strengthen the training and examination of welding nondestructive testing, heat treatment and other special craft personnel. Research and advanced technology, make the parts manufacturing quality reach the design drawings and standard specifications.
The 6 nuclear safety awareness of staff education and training, strengthen the whole process of quality management, design and manufacture of nuclear power valve, improve the management level.
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