The autonomy of the nuclear power standard system has always been a bottleneck that has plagued China’s nuclear power development. In order to establish a sound nuclear power standard system as soon as possible, the National Energy Administration issued the “PWR Nuclear Power Plant Standard System Project Table†in 2009, which is the nuclear power industry standard. This is a combination of nuclear power in the field of national standards, industry standards in one nuclear power standard system.
In April 2010, the National Energy Administration established the Nuclear Power Standardization Technical Committee of the Energy Industry (hereinafter referred to as the "Science and Technology Commission"). Since its inception, the First Technical Committee for Standardization has creatively carried out the formulation and revision of nuclear power standards for the energy industry.
“As of the end of September 2011, the 680 standards in the PWR Nuclear Power Plant Standard System Project List have been implemented and implemented 101 items. 458 items are being developed and revised. About 300 items will be completed by the end of the year. The remaining standards will be Completed in 2012, it has basically established a standard system to meet the requirements of the second-generation improved PWR nuclear power plant.†Li Ye, director of the Science and Technology Department of the National Energy Administration, stated at the second meeting of the National Technical Committee. "While improving the standard system of the second-generation improved pressurized water reactor nuclear power plant, it will also initiate the formulation of the three-generation PWR unit standard with mature conditions and construct the basic standard framework for the three-generation PWR unit."
Upon hearing this news, Zhang Huazhuo, chairman of the China Nuclear Energy Industry Association, could not hide his excitement: "China's third-generation nuclear power construction will no longer repeat the embarrassing situation that second-generation nuclear power does not have its own standards for a long time."
"This is a groundbreaking work and it is of great significance for us to get rid of the situation of passive adaptation to international standards. Everyone involved should have a noble sense of mission and glory!" said Qian Zhimin, deputy director of the National Energy Administration.
Fukushima warning deepens consensus At this meeting, the new trend of nuclear power standardization after the Fukushima nuclear accident has become the topic of discussion. The rapid establishment of China's autonomous nuclear power standard system has become a consensus in the industry.
Zhao Bo of China National Nuclear Power Engineering Co., Ltd. said that after the Fukushima nuclear accident, it is necessary for us to review, strengthen, and improve China’s existing nuclear safety and regulatory systems, and guide and supervise nuclear safety triggered by similar extreme natural disasters from the perspective of regulations and standards. problem. In his view, improving the design standards of the on-site emergency control center and the off-site backup emergency control center can resist the bad external events to some extent.
It is understood that the current international development of nuclear power equipment appraisal standards has increased the trend of serious accident identification requirements. In the latest version of the rules for the design and manufacture of electrical equipment in France's nuclear islands, the section entitled “Authentication procedures under severe accident conditions†was added. AP1000 units and EPR units currently under construction in China have also submitted identification requirements under severe accident conditions.
"It is necessary to carry out the construction of a serious accident identification standard for nuclear power equipment in order to perfect China's nuclear power equipment appraisal standard system based on the fact that China only considers the identification requirements for design basis accidents," said Yang Zhongqin of China Nuclear Power Technology Research Institute.
Duan Yuangang from China General Nuclear Power Engineering Co., Ltd. pointedly pointed out: "One of the warnings on nuclear safety at the Fukushima nuclear accident is how to solve the problem of the lack of nuclear power technical standards. The complete nuclear power standard system is the basis and guarantee for all work. In his opinion, we should start with design, construction, operation, and aging management, and further comb the standards and norms to make the technical standard system more comprehensive, scientific, and practical, so as to ensure the safety and reliability of nuclear power plants.
After the release of the PWR Nuclear Power Plant Standard System Project Table, the National Energy Administration issued a total of 470 nuclear power (nuclear island) standards in six batches between 2009 and 2011. With the revision and scientific research tasks, the construction of the nuclear power standard system began to speed up.
The target set for the PWR Nuclear Power Plant Standard System Construction Plan is to achieve the complete supporting of the standard of the second-generation improved PWR unit in 2013 and start the formulation of three-generation PWR unit standards with mature conditions. The basic standard framework for PWR units. In 2015, the standard system comprehensively covered the second generation of improved and basically covered three generations of PWR nuclear power plants.
The construction of the nuclear power standard system thus began to gather power. The units involved in the formulation and revision of standards include more than 40 Chinese nuclear power research and design institutes, China Nuclear Power Engineering Co., Ltd., China Guangdong Nuclear Power Engineering Co., Ltd., China Nuclear Power Technology Research Institute, Shanghai Nuclear Engineering Research and Design Institute, and machinery manufacturing enterprises. Each has a full-time or part-time standardization management staff, and about 1500 scientific research and engineering technicians who directly participate in the standard preparation.
Within a year, the standard technical committee organized a total of 5 large-scale trainings in standard basic knowledge. With the establishment of the nuclear power standard system and the continuous development of standards development and revision work, more and more leaders, experts, and scientific research projects have been designed. Professional technicians such as commissioning and operation have gradually mastered the relevant procedural, normative, and accuracy related standardization technologies, and a high-level team of nuclear power standardization talents has been established.
While fully implementing nuclear power standard formulation and revision, in order to incorporate the latest technology of nuclear power engineering construction and the experience of China's nuclear power engineering accumulation and feedback into the standard, the PWR nuclear power plant standard system is undertaken by the Nuclear Industry Standardization Institute. The project list (2011) was also carried out at the same time. Gong Jun, director of the Institute of Standardization, said that the revision of the project schedule aims to establish a nuclear power standard system that can meet the needs of the second generation of improved and three generations of non-reliable PWR nuclear power plants.
During the revision process, the National Energy Administration arranged a special research project for the "Standard Analysis of Three Generations of Non-Powered Water Pressure Reactor Nuclear Power Plants" in 2009. It was led by the Shanghai Nuclear Engineering Research and Design Institute, the Nuclear Industry Standardization Institute and China National Nuclear Power Engineering Co., Ltd. Jointly undertaken for almost 3 years. On September 21, 2011, the standardization institute organized a project acceptance meeting in Beijing.
In the revised nuclear power standard system, there are a total of 826 standard items in the eight major areas (29 sub-fields): general and basic, preliminary work, engineering design, equipment, construction, commissioning, operation, and decommissioning. Three hundred new special standards for three generations of passive pressure water reactor nuclear power plants have been added, and 33 new shared standards have been added to the second generation of improved and three generations of non-dynamic pressurized water reactor nuclear power plants to further improve the standard project of the second generation of improved pressurized water reactor nuclear power plants. .
The process of meeting the challenge and speeding up all efforts is not a smooth journey. Due to the diversification of China's nuclear power reactor types and the multinationalization of technology introduction, standards for countries such as the United States, France, Russia, Germany, and Canada have all been adopted to different degrees in domestic nuclear power design and construction. The situation of multi-standard coexistence has given nuclear power to China. The construction of the standard system has brought great challenges.
Take the Tianwan Nuclear Power Project as an example. This is the first nuclear power plant in China to use a digital instrumentation control system. The design standard of the process system adopts the Russian standard, the grading standard of the instrumentation and control system adopts the national standard, and the DCS equipment manufacturing and appraisal involve the supply of the instrument and control. The standards of Siemens Germany and the review of the regulatory authorities are reviewed in accordance with the management guidelines and safety review guidelines established by the US Nuclear Regulatory Commission. Therefore, conflicts and collisions between standards often occur during project implementation.
“Because the standard systems of several countries are mixed together, the self-consistency of the standards has brought great difficulties to the design, supply and supervision of nuclear power,†said Chen Rizhao of China Nuclear Power Engineering Co., Ltd. In this regard, he believes that standards must be established on the basis of regulations and guidelines, and regulations and guidelines must be used as a framework and guidance.
Wu Danlei, of Shanghai Power Generation Equipment Design and Research Institute, believes that China's lack of a standard experience feedback mechanism will inevitably affect the development and improvement of the standard system. For example, she said that in the surfacing of steam generator nickel-based tube sheets, foreign countries require the use of electrodepositing methods, and some enterprises in China hope to adopt the new process of electroslag welding. Because it does not comply with foreign standards, this new welding method cannot be applied to the manufacture of nuclear power equipment. If the standard feedback mechanism is sound, such a process may go through the corresponding procedures to enter the scope of the license, which will greatly promote the technological innovation and efficiency improvement of Chinese enterprises.
“We should combine the resources of China’s nuclear power sector and lead the government to set up an experience feedback coalition including owners, design, manufacturing, construction, and operation, and establish an independent and complete experience feedback mechanism through participating in international organizations. , Sharing the results of experience feedback.†Wu Danlei said.
As of August 30, 2011, a total of 218 of the 259 nuclear power standards that should be completed by the National Standards and Technology Commissions by the end of 2011 had been submitted for consultation, of which 95 have been completed. Combining the actual conditions of China’s nuclear power construction and the accumulation of years of engineering experience, the experts proposed nearly 3,000 amendment opinions and suggestions to provide quality assurance for nuclear power standards.
“The localization of nuclear power standards has reached a critical stage. Under the circumstances of nuclear power authorities, nuclear safety regulatory agencies, designers, manufacturers, and owners all agree, according to the current experience accumulated, combined with China's industrial base, the standard technical committee will work out China's own nuclear power standards, said Li Ye.
In April 2010, the National Energy Administration established the Nuclear Power Standardization Technical Committee of the Energy Industry (hereinafter referred to as the "Science and Technology Commission"). Since its inception, the First Technical Committee for Standardization has creatively carried out the formulation and revision of nuclear power standards for the energy industry.
“As of the end of September 2011, the 680 standards in the PWR Nuclear Power Plant Standard System Project List have been implemented and implemented 101 items. 458 items are being developed and revised. About 300 items will be completed by the end of the year. The remaining standards will be Completed in 2012, it has basically established a standard system to meet the requirements of the second-generation improved PWR nuclear power plant.†Li Ye, director of the Science and Technology Department of the National Energy Administration, stated at the second meeting of the National Technical Committee. "While improving the standard system of the second-generation improved pressurized water reactor nuclear power plant, it will also initiate the formulation of the three-generation PWR unit standard with mature conditions and construct the basic standard framework for the three-generation PWR unit."
Upon hearing this news, Zhang Huazhuo, chairman of the China Nuclear Energy Industry Association, could not hide his excitement: "China's third-generation nuclear power construction will no longer repeat the embarrassing situation that second-generation nuclear power does not have its own standards for a long time."
"This is a groundbreaking work and it is of great significance for us to get rid of the situation of passive adaptation to international standards. Everyone involved should have a noble sense of mission and glory!" said Qian Zhimin, deputy director of the National Energy Administration.
Fukushima warning deepens consensus At this meeting, the new trend of nuclear power standardization after the Fukushima nuclear accident has become the topic of discussion. The rapid establishment of China's autonomous nuclear power standard system has become a consensus in the industry.
Zhao Bo of China National Nuclear Power Engineering Co., Ltd. said that after the Fukushima nuclear accident, it is necessary for us to review, strengthen, and improve China’s existing nuclear safety and regulatory systems, and guide and supervise nuclear safety triggered by similar extreme natural disasters from the perspective of regulations and standards. problem. In his view, improving the design standards of the on-site emergency control center and the off-site backup emergency control center can resist the bad external events to some extent.
It is understood that the current international development of nuclear power equipment appraisal standards has increased the trend of serious accident identification requirements. In the latest version of the rules for the design and manufacture of electrical equipment in France's nuclear islands, the section entitled “Authentication procedures under severe accident conditions†was added. AP1000 units and EPR units currently under construction in China have also submitted identification requirements under severe accident conditions.
"It is necessary to carry out the construction of a serious accident identification standard for nuclear power equipment in order to perfect China's nuclear power equipment appraisal standard system based on the fact that China only considers the identification requirements for design basis accidents," said Yang Zhongqin of China Nuclear Power Technology Research Institute.
Duan Yuangang from China General Nuclear Power Engineering Co., Ltd. pointedly pointed out: "One of the warnings on nuclear safety at the Fukushima nuclear accident is how to solve the problem of the lack of nuclear power technical standards. The complete nuclear power standard system is the basis and guarantee for all work. In his opinion, we should start with design, construction, operation, and aging management, and further comb the standards and norms to make the technical standard system more comprehensive, scientific, and practical, so as to ensure the safety and reliability of nuclear power plants.
After the release of the PWR Nuclear Power Plant Standard System Project Table, the National Energy Administration issued a total of 470 nuclear power (nuclear island) standards in six batches between 2009 and 2011. With the revision and scientific research tasks, the construction of the nuclear power standard system began to speed up.
The target set for the PWR Nuclear Power Plant Standard System Construction Plan is to achieve the complete supporting of the standard of the second-generation improved PWR unit in 2013 and start the formulation of three-generation PWR unit standards with mature conditions. The basic standard framework for PWR units. In 2015, the standard system comprehensively covered the second generation of improved and basically covered three generations of PWR nuclear power plants.
The construction of the nuclear power standard system thus began to gather power. The units involved in the formulation and revision of standards include more than 40 Chinese nuclear power research and design institutes, China Nuclear Power Engineering Co., Ltd., China Guangdong Nuclear Power Engineering Co., Ltd., China Nuclear Power Technology Research Institute, Shanghai Nuclear Engineering Research and Design Institute, and machinery manufacturing enterprises. Each has a full-time or part-time standardization management staff, and about 1500 scientific research and engineering technicians who directly participate in the standard preparation.
Within a year, the standard technical committee organized a total of 5 large-scale trainings in standard basic knowledge. With the establishment of the nuclear power standard system and the continuous development of standards development and revision work, more and more leaders, experts, and scientific research projects have been designed. Professional technicians such as commissioning and operation have gradually mastered the relevant procedural, normative, and accuracy related standardization technologies, and a high-level team of nuclear power standardization talents has been established.
While fully implementing nuclear power standard formulation and revision, in order to incorporate the latest technology of nuclear power engineering construction and the experience of China's nuclear power engineering accumulation and feedback into the standard, the PWR nuclear power plant standard system is undertaken by the Nuclear Industry Standardization Institute. The project list (2011) was also carried out at the same time. Gong Jun, director of the Institute of Standardization, said that the revision of the project schedule aims to establish a nuclear power standard system that can meet the needs of the second generation of improved and three generations of non-reliable PWR nuclear power plants.
During the revision process, the National Energy Administration arranged a special research project for the "Standard Analysis of Three Generations of Non-Powered Water Pressure Reactor Nuclear Power Plants" in 2009. It was led by the Shanghai Nuclear Engineering Research and Design Institute, the Nuclear Industry Standardization Institute and China National Nuclear Power Engineering Co., Ltd. Jointly undertaken for almost 3 years. On September 21, 2011, the standardization institute organized a project acceptance meeting in Beijing.
In the revised nuclear power standard system, there are a total of 826 standard items in the eight major areas (29 sub-fields): general and basic, preliminary work, engineering design, equipment, construction, commissioning, operation, and decommissioning. Three hundred new special standards for three generations of passive pressure water reactor nuclear power plants have been added, and 33 new shared standards have been added to the second generation of improved and three generations of non-dynamic pressurized water reactor nuclear power plants to further improve the standard project of the second generation of improved pressurized water reactor nuclear power plants. .
The process of meeting the challenge and speeding up all efforts is not a smooth journey. Due to the diversification of China's nuclear power reactor types and the multinationalization of technology introduction, standards for countries such as the United States, France, Russia, Germany, and Canada have all been adopted to different degrees in domestic nuclear power design and construction. The situation of multi-standard coexistence has given nuclear power to China. The construction of the standard system has brought great challenges.
Take the Tianwan Nuclear Power Project as an example. This is the first nuclear power plant in China to use a digital instrumentation control system. The design standard of the process system adopts the Russian standard, the grading standard of the instrumentation and control system adopts the national standard, and the DCS equipment manufacturing and appraisal involve the supply of the instrument and control. The standards of Siemens Germany and the review of the regulatory authorities are reviewed in accordance with the management guidelines and safety review guidelines established by the US Nuclear Regulatory Commission. Therefore, conflicts and collisions between standards often occur during project implementation.
“Because the standard systems of several countries are mixed together, the self-consistency of the standards has brought great difficulties to the design, supply and supervision of nuclear power,†said Chen Rizhao of China Nuclear Power Engineering Co., Ltd. In this regard, he believes that standards must be established on the basis of regulations and guidelines, and regulations and guidelines must be used as a framework and guidance.
Wu Danlei, of Shanghai Power Generation Equipment Design and Research Institute, believes that China's lack of a standard experience feedback mechanism will inevitably affect the development and improvement of the standard system. For example, she said that in the surfacing of steam generator nickel-based tube sheets, foreign countries require the use of electrodepositing methods, and some enterprises in China hope to adopt the new process of electroslag welding. Because it does not comply with foreign standards, this new welding method cannot be applied to the manufacture of nuclear power equipment. If the standard feedback mechanism is sound, such a process may go through the corresponding procedures to enter the scope of the license, which will greatly promote the technological innovation and efficiency improvement of Chinese enterprises.
“We should combine the resources of China’s nuclear power sector and lead the government to set up an experience feedback coalition including owners, design, manufacturing, construction, and operation, and establish an independent and complete experience feedback mechanism through participating in international organizations. , Sharing the results of experience feedback.†Wu Danlei said.
As of August 30, 2011, a total of 218 of the 259 nuclear power standards that should be completed by the National Standards and Technology Commissions by the end of 2011 had been submitted for consultation, of which 95 have been completed. Combining the actual conditions of China’s nuclear power construction and the accumulation of years of engineering experience, the experts proposed nearly 3,000 amendment opinions and suggestions to provide quality assurance for nuclear power standards.
“The localization of nuclear power standards has reached a critical stage. Under the circumstances of nuclear power authorities, nuclear safety regulatory agencies, designers, manufacturers, and owners all agree, according to the current experience accumulated, combined with China's industrial base, the standard technical committee will work out China's own nuclear power standards, said Li Ye.
K9 Crystal Chandelier,Crystal Chandelier,Hotel K9 Chandelier,Hotel Decoration Chandelier
Table Lamp Wall Lamp Co.,Ltd , http://www.nspendantlamp.com