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The expert committee that made this appraisal was appointed by Xu Lianyi, director of the Nuclear Power Office of the China Machinery Industry Federation, and gathered various well-known experts from national research institutes and large enterprises in the field of nuclear power in China. Prior to the convening of the appraisal meeting, according to the national nuclear industry standards, nine major tests, such as heat aging, vibration aging, and irradiation aging, were assumed for the nuclear-grade products developed by Tian Ertong. Such a harsh practice not only verified the safety and reliability of Tian Er Tong nuclear grade products, but also demonstrated that Tian Er Tong is leading the nuclear level of the same industry in China.
Domestic leadership is not a virtual word. When “domestic leading†is a kind of propaganda and lacks sufficient basis, it becomes a disguised word. However, the domestic leader of the Tian Ertong nuclear-grade K1 valve electric device is not self-proclaimed.
According to the national nuclear industry standards, the valve electric devices used in nuclear power plants are divided into three categories: K1, K2, and K3. The K1 class is installed in the nuclear reactor containment, not only under normal conditions and under safe shutdown shock loads, but also to perform the specified functions after accidents and accidents. It is understood that up to now, among the three manufacturers capable of manufacturing nuclear-grade valve electric devices in China, Tiansongtong's new series of products can meet the US RCC-E-1993 standard and the internationally accepted French IEEE382- The 1996 standard covers the capacity of units from 300,000 to 900,000 kilowatts. This is the main basis for the conclusion that the identification has made domestic leading and reached the level of international similar products.
Fang Qingxian, deputy director of the appraisal committee and chief engineer of the Nuclear Safety Center of the State Environmental Protection Administration, told reporters that the valve electric device is the core component of the control pipeline valve. A nuclear power plant needs more than 10,000 valves, half of which are used in the nuclear reactor containment. The harsh environment with high temperature inside the casing, high pressure and large irradiation dose requires that the valve electric device must reach the service life of 40 years without maintenance in the safety enclosure. Fang Qingxian said that in the past, such components of nuclear power plants in China all depended on imports. Today, such products of Tian Ertong are leading domestically to reach the level of international similar products. The practical significance lies in establishing a strategy of “actively developing nuclear power†in the country and placing it on domestic nuclear power equipment manufacturing. Today, the industry is looking forward to the day, Tianshui leads the domestic valve electric device manufacturing industry to achieve localization.
Safety test to challenge the limit In the nine safety reliability tests of the assumed nuclear accidents conducted before the appraisal meeting, for the key tests, the relevant experts visited the site to conduct the whole process from pre-test to test-to-test. . Not only that, but the experts also questioned and reviewed the test and test reports provided by the national certification qualification testing agency at the appraisal meeting.
The most severe of the nine tests was the Loss of Water (LOCA) test of the double-end rupture of the main pipe in the containment of the simulated nuclear reactor containment. This test is usually carried out twice in the world. The first time is to raise the temperature inside the reactor containment from 50 °C to 156 °C in 10 seconds, and increase the pressure to 0.56 MPa for 15 minutes. After the temperature, the second "peak" test was carried out, and then the chemical spray of the etching solution was carried out, and the temperature was lowered to 120 ° C for 24 days. According to international practice, the valve electric device that has withstood the two "peak" tests of this harsh environment can achieve a life of 40 years. For this test of Tian Ertong's products, the supernormal third "leaf peak" and corrosion spray for 96 hours were carried out. This can be said to be the rigorous test of the limit of the two-way electric device that has undergone two "peaks" tests. The staff present at the scene can hold a sweat for it. The results of the third "La Peak" test gave people surprising surprises. Zuo Min, deputy director of the Expert Committee of the 60-year-old, and chief engineer of the Beijing Nuclear Industry Research and Design Institute, climbed the test bench nearly 3 meters high four times. After repeatedly reviewing the test prototype, he praised: "Tian Ertong products are really good. of".
Nuclear-level skill is not a day's work. Why is there such a nuclear-level skill?
Feng Kejun, general manager of the company, said that the generations of Tian Ertong have started from cultivating independent technological innovation capabilities, and are committed to creating exclusive boutiques, expertise and professional energy levels, and have formed a special technical accumulation. The company first developed the first generation of valve drive units in China in the early 1960s. Since then, the first company has established the Valve Drive Technology Research Institute for the first time in more than 40 years. The first company introduced and digested the world's advanced American Mimitok valve drive technology, the first to purchase advanced equipment at home and abroad to carry out the transformation of process equipment based on numerical control, and at the same time lead the industry to carry out continuous product upgrades.
At present, Tian Er Tong products have been made up of more than 40 varieties of more than 40 varieties that are suitable for diversified needs, such as integral type, explosion-proof type, intelligent type, automatic adjustment type, bus control type, network control type and other domestic leading and international advanced products. A new series with more than 1,000 specifications, so that economic growth has shifted from relying on traditional product support to relying on high-tech products, and the quality of economic operation has improved significantly. Since 2002, the company's production and sales value has increased by an average of more than 20% per year. In the first half of this year, sales revenue increased by 15.49%, while profit growth increased by 67.40%, of which 52% of profit growth is based on high technology. New products are implemented.
(Source: China Industry News)
Tian Ertong nuclear grade K1 valve electric device identification scan
The nuclear-level product appraisal meeting organized by the China National Machinery Industry Federation, after a full day of evaluation and demonstration, finally settled at 6 o'clock that night: Tian Ertong independently developed the inner shell of the safety shell of the pressurized water reactor nuclear power plant. Road sealing butterfly valve electric device (K1·Q·100-4-0.25 and K1·Q·1000-1.5-0.25), the structure design is reasonable, the standard is suitable, it is the domestic leading, reaching the level of international similar products.