Prospect Research on Application of Mobile Liquid Radwaste Treatment Unit in Nuclear Power Plant

2017 ◽  
Author(s):  
Laiye Zhu ◽  
Maogang Zhu ◽  
Yanhong He ◽  
Xin Wang ◽  
Wenshu Dong
Keyword(s):  
Wastewater Treatment ◽  
Power Plant ◽  
Nuclear Power Plant ◽  
Mobile Device ◽  
Nuclear Power ◽  
New Technologies ◽  
Liquid Waste ◽  
Waste Processing ◽  
Radioactive Liquid Waste ◽  
Treatment Unit

With the introduction of third generation of nuclear power AP1000, Westinghouse uses the mobile device (a mobile wastewater treatment device 6 units shared) radioactive waste system design concepts. This design not only simplifies the process of nuclear island waste system; saves equipment layout space; improves equipment utilization; while increases the use of new technologies lifetime of the plant and the possibility of flexibility. This paper introduces the first AP1000 unit (Sanmen, Zhejiang Province) by using the advanced mobile device technology and application of wastewater treatment under the condition of the primary coolant source level. At the same time, the paper also discusses the periodic system inspection and the strategy of maintenance. In addition, the paper further expands the application direction of the mobile waste processing aspects, such as: decommissioning of nuclear facilities; enhancing the facility decommissioning radioactive liquid waste purification capability. Another example: After the Fukushima accident, people pay more attention to accident-mitigation-design and hope to accelerate the development of emergency radioactive liquid waste processing devices. Thus, in addition to strengthening the nuclear power plant inherent defense in depth and resistance emergency capability, mobile waste treatment device or combination device special regional settings can be made to improve and enhance the ability to get more diversified emergency response.

Conditioning of Radioactive Waste Resulted From the Treatment of Liquid Waste From the Romanian Nuclear Power Plant

2003 ◽  
Author(s):  
Carmen Arsene ◽  
Dumitru Negoiu
Keyword(s):  
Power Plant ◽  
Nuclear Power Plant ◽  
Radioactive Waste ◽  
Nuclear Power ◽  
Liquid Waste ◽  
Organic Polymers ◽  
Research Project ◽  
Direct Immobilization ◽  
Made In

For the conditioning of spent resins contaminated with radionuclides, such as: 137Cs, 134Cs, 60Co, 58Co, 57Co, 54Mn, etc., techniques of direct immobilization in cement, bitumen and organic polymers have been tested. The selected process was the bituminization using industrial bitumen, I 60–70, made in Romania, which had very good immobilizing characteristics. The paper presents stages of the research project, technical conditions for the process and advantages of the bituminization of spent resins.

Robots–from concept to commissioning (Company profile)

Robotica ◽  
1983 ◽  
Vol 1 (3) ◽  
pp. 161-165
Author(s):  
Duncan Barrie Lowe
Keyword(s):  
Power Plant ◽  
Nuclear Power Plant ◽  
Flexible Manufacturing ◽  
Nuclear Power ◽  
Flexible Manufacturing Systems ◽  
Manufacturing Systems ◽  
Waste Processing ◽  
Process Industries ◽  
Industrial Robotics

SUMMARYTaylor Hitec Ltd are active in the field of inventive design and successful construction of unique robotic implements for remote working in nuclear power plant and associated waste processing. The company has widened its operation and expertise to provide a concept-to-commission service in consultant and applications engineering for the introduction of robots and FMS in manufacturing and process industries. In the profile presented here are some examples of the manipulators produced by the company and their technical evolution, together with an outline of the successful widening of business into the fields of industrial robotics and flexible manufacturing systems.

scholarly journals Conceptual model and results of long-term radioecological monitoring of the effect zone of liquid discharges from the Beloyarsk nuclear power plant

2020 ◽  
pp. 68-75
Author(s):  
L. N. Mikhailovskaya ◽  
A. V. Korzhavin ◽  
V. N. Trapeznikova ◽  
A. V. Trapeznikov
Keyword(s):  
Power Plant ◽  
Nuclear Power Plant ◽  
Bottom Sediments ◽  
Nuclear Power ◽  
Liquid Waste ◽  
River System ◽  
Reference Points ◽  
Radiation Hazard ◽  
Hydrographic Network

Relevance. The long-term use of the Olkhovsk bog as a natural filter on the way of the liquid discharges of the Beloyarsk Nuclear Power Plant (BNPP) led to radionuclide contamination of the Olkhovsk bog-river system that became a source of secondary pollution.Intention. To assess the radioecological state of the BNPP liquid waste zone based on a special system for monitoring environmental pollution by long-lived radionuclides.Methodology. Samples of water, bottom sediments, and soils were studied at the reference points of the bog-river system.Results and Discussion. Over the 35 years of the BNPP operation, pollution of the upper layers of bottom sediments has decreased due to redistribution of radionuclides with surface runoff, depth migration and radioactive decay. After the reconstruction of discharges, the removal of radionuclides into open hydrographic network decreased by 2–3 times and amounted to 48.2 ∙ 106 Bq ∙ year–1 for 90Sr and 94.8 ∙ 106 Bq ∙ year–1 for 137Cs. The migration of radionuclides to adjacent Olkhovsk bog-river system territories is still limited by the coastal strip of flooded soils.Conclusion. Radioecological situation in the Olkhovsk bog-river system is potentially dangerous. Migration processes (movement of the pollution front along the drain vector) can result in increased transfer of radionuclides into an open hydrographic network and require constant monitoring. For a balanced assessment of the radiation hazard of Olkhovsk bogriver system, it is necessary to assess current stocks of radionuclides.

Hitachi-GE Advanced Construction Management Technologies

2008 ◽  
Author(s):  
Kimiharu Onda ◽  
Masatoshi Takada ◽  
Hisako Okada ◽  
Kazuto Tatehora
Keyword(s):  
Power Plant ◽  
Nuclear Power Plant ◽  
Construction Management ◽  
Nuclear Power ◽  
New Technologies ◽  
Personal Digital Assistant ◽  
Safety And Reliability ◽  
Planning Function ◽  
Under Construction ◽  
A Site

Hitachi has so far developed the construction management system with information technology since more than twenty years ago. As the recent results, we developed the advanced new functions and applied them to the Nuclear Power Plant (NPP)’s under construction. RFID-applied construction management method with personal digital assistant (PDA) could realize more reliable and efficient construction control on a site. By enhancing an Integrated Schedule Planning function, the construction scheme could be more accurately and speedily developed, which made it possible to realize the standardization of schedule planning, the linkage with other systems, and the improvement of operability. By applying these new technologies to Hitachi construction management, Hitachi can supply the nuclear power plant with higher quality, safety, and reliability.

scholarly journals A Study of the Adsorption Characteristics of Cobalt and Caesium from a Solution by Using Vietnamese Bentonite

2015 ◽  
Vol 43 (2) ◽  
pp. 79-83 ◽  
Author(s):  
Le Phuoc Cuong ◽  
Pham Hoang Giang ◽  
Bui Dang Hanh ◽  
Gergő Bátor
Keyword(s):  
Power Plant ◽  
Nuclear Power Plant ◽  
Radioactive Waste ◽  
Nuclear Power ◽  
Large Scale ◽  
High Efficiency ◽  
Waste Treatment ◽  
Low Cost ◽  
Liquid Waste ◽  
Controversial Topic

Abstract The radioactive waste produced from the construction of a nuclear power plant is a controversial topic. The resulting radioactive waste contains 60Co and 137Cs isotopes that are the most difficult to remove. Bentonite is widely used as an adsorbent for heavy metals. An important factor is the safe operation of waste management at a nuclear power plant to be built in Vietnam. Therefore, a method of degrading complexes of radionuclides and the adsorption of radionuclides onto Vietnamese Bentonite was implemented in this study. In current literature, UV radiation and heating with oxidising substances are used in general for degrading complexes of radionuclides. The experimental results for the adsorption of Co(II) and Cs+ onto VNB suggest that VNB can be used in the future for large-scale liquid waste treatment due to its low cost, high efficiency, and environmentally friendliness.

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