Development of Divertor Remote Maintenance System

1998 ◽  
Vol 10 (2) ◽  
pp. 88-95 ◽  
Author(s):  
Nobukazu Takeda ◽  
◽  
Kiyoshi Oka ◽  
Kentaro Akou ◽  
Yuji Takiguchi
Keyword(s):  
Gamma Radiation ◽  
Technology Development ◽  
Extreme Heat ◽  
Radial Transport ◽  
Home Team ◽  
Remote Handling ◽  
Maintenance System ◽  
Remote Maintenance ◽  
The Status

The ITER divertor is categorized as a scheduled maintenance component because of extreme heat and particle loads it is exposed to by plasma. It is also highly activated by 14 MeV neutrons. Reliable remote handling equipment and tools are required for divertor maintenance under intense gamma radiation. To facilitate remote maintenance, the divertor is segmented into 60 cassettes, and each cassette weighing about 25 tons and maintained and replaced through four maintenance ports each 90 degrees. divertor cassettes must be transported toroidally and radially for replacement through maintenance ports. Remote handling involving cassette movers and carriers for toroidal and radial transport has been developed. Under the ITER R&D program, technology critical to divertor cassette maintenance is being developed jointly by Japan, E.U., and U.5. home teams. This paper summarizes divertor remote maintenance design and the status of technology development by the Japan Home Team.

scholarly journals Development of Blanket Remote Maintenance System

1998 ◽  
Vol 10 (2) ◽  
pp. 78-87 ◽  
Author(s):  
Satoshi Kakudate ◽  
◽  
Masataka Nakahira ◽  
Kiyoshi Oka ◽  
Kou Taguchi
Keyword(s):  
Gamma Radiation ◽  
Full Scale ◽  
Positioning Accuracy ◽  
Home Team ◽  
Remote Handling ◽  
Maintenance System ◽  
Remote Maintenance ◽  
Critical Technology ◽  
Blanket Maintenance

ITER in-vessel components such as blankets are scheduled maintenance components, including complete shield blanket replacement for breeding blankets. In-vessel components are activated by 14 MeV neutrons, so blanket maintenance requires remote handling equipment and tools able to handle heavy payloads of about 4 tons within a positioning accuracy of 2 mm under intense gamma radiation. To facilitate remote maintenance, blankets are segmented into 730 modules and railmounted vehicle remote maintenance was developed. According to the ITER R&D program, critical technology related to blanket maintenance was developed extensively through joint efforts of the Japan, EU, and U.S. home teams. This paper summarizes current blanket maintenance technology conducted by the Japan Home Team, including development of full-scale remote handling equipment and tools for blanket maintenance.

scholarly journals Development of Radiation Hardness Components for ITER Remote Maintenance

1998 ◽  
Vol 10 (2) ◽  
pp. 121-132 ◽  
Author(s):  
Kenjiro Obara ◽  
◽  
Satoshi Kakudate ◽  
Kiyoshi Oka ◽  
Akira Ito ◽  
...  
Keyword(s):  
Quality Improvement ◽  
Gamma Ray ◽  
New Products ◽  
Radiation Hardness ◽  
Radiation Doses ◽  
High Radiation ◽  
Home Team ◽  
Remote Handling ◽  
Remote Maintenance ◽  
Component Development

In the ITER, in-vessel remote handling is required to assemble and maintain in-vessel components in DT operations. Since in-vessel remote handling systems must operate under intense gamma ray radiation exceeding 30 kGy/h, their components must have sufficiently high radiation hardness to allow maintenance long enough in ITER in-vessel environments. Thus, extensive radiation tests and quality improvement, including optimization of material compositions, have been conducted through the ITER R&D program to develop radiation hardness components that meet radiation doses from 10 to 100 MGy at 10 kGy/h. This paper presents the latest on radiation hardness component development conducted by the Japan Home Team as a contribution to the ITER. The remote handling components tested are categorized for use in robotic or viewing systems, or as common components. Radiation tests have been conducted on commercially available products for screening, on modified products, and on new products to improve the radiation hardness.

Development of ITER In-Vessel Viewing and Metrology Systems

1998 ◽  
Vol 10 (2) ◽  
pp. 96-103
Author(s):  
Kenjiro Obara ◽  
◽  
Satoshi Kakudate ◽  
Masataka Nakahira ◽  
Akira Ito
Keyword(s):  
High Temperature ◽  
Gamma Radiation ◽  
Technology Development ◽  
High Vacuum ◽  
Inert Gas ◽  
Design And Technology ◽  
Home Team ◽  
Laser Metrology ◽  
Metrology System ◽  
The U.S

The ITER in-vessel viewing system is vital for detecting and locating damage to in-vessel components such as the blankets and divertors and in monitoring and assisting in-vessel maintenance. This system must be able to operate at high temperature (200°C) under intense gamma radiation (-30 kGy/h) in a high vacuum or I bar inert gas. A periscope viewing system was chosen as a reference due to its clear, wide view and a fiberscope viewing system chosen as a backup for viewing in narrow confines. According to the ITER R&D program, both systems and a metrology system are being developed through the joint efforts of Japan, the U.S., and RF Home Teams. This paper outlines design and technology development mainly on periscope in-vessel viewing and laser metrology contributed by the Japan Home Team.

Measurement and Control System for ITER Remote Maintenance Equipment

1998 ◽  
Vol 10 (2) ◽  
pp. 139-145 ◽  
Author(s):  
Kiyoshi Oka ◽  
◽  
Satoshi Kakudate ◽  
Nobukazu Takeda ◽  
Yuji Takiguchi ◽  
...  
Keyword(s):  
Control System ◽  
Full Scale ◽  
Dead Weight ◽  
Measurement And Control System ◽  
Home Team ◽  
Remote Handling ◽  
Remote Maintenance ◽  
Blanket Maintenance ◽  
And Control ◽  
Measurement And Control

ITER in-vessel components such as blankets and divertors are categorized as scheduled maintenance components because they are subjected to severe plasma heat and particle loads. Blanket maintenance requires remote handling equipment and tools able to handle Heavy payloads of about 4 tons within a 2mm precision tolerance. divertor maintenance requires remote replacement of 60 cassettes with a dead weight of about 25 tons each. In the ITER R&D program, full-scale remote handling equipment for blanket and divertor maintenance has been designed and assembled for demonstration tests. This paper reviews the measurement and control system developed for full-scale remote handling equipment, the Japan Home Team contribution.

Paradigmatic Shifts in the Uranium Exploration Process: Knowledge Brokers and the Athabasca Basin Learning Curve

SEG Discovery ◽  
2011 ◽  
pp. 1-23
Author(s):  
James L. Marlatt ◽  
T. Kurt Kyser
Keyword(s):  
Research And Development ◽  
Technology Development ◽  
Current Model ◽  
Development Effort ◽  
Organizational System ◽  
Exploration Process ◽  
Athabasca Basin ◽  
Uranium Exploration ◽  
The Status ◽  
Knowledge Brokers

ABSTRACT Uranium exploration increased over the past decade in response to an increase in the price of uranium, with more than 900 companies engaged in the global exploration on over 3,000 projects. Major economic discoveries of new uranium orebodies have been elusive despite global exploration expenditures of $3.2 billion USD, with most of the effort in historical uranium districts. The increased effort in exploration with minimal return can be described through the example of a cyclical model based on exploration and discovery in the prolific Athabasca Basin, Saskatchewan. The model incorporates exploration expenditure, quantities of discovered uranium, and the sequence of uranium deposit discoveries to reveal that discovery cycles are epochal in nature and that they are also intimately related to the development and deployment of new exploration technologies. Exploration in the Athabasca Basin can be divided into an early “prospector” phase and the current “model-driven”phase. The future of successful uranium exploration is envisaged as the “innovation exploration” stage in which a paradigmatic shift in the exploration approach will take the industry towards new discoveries by leveraging research and technology development. Effective engagement within the “innovation exploration” paradigm requires that exploration organizations recognize knowledge brokers, and adopt research, development, and technology transfer as a long-term, systematic strategy, including critical definition of exploration targets, identification of innovation frontiers needed, enhanced leadership to accurately portray the research and development imperative and elevation of the status of the research and development effort within the organizational system.

scholarly journals Global Problems of Mankind: The Status and Prospects of Solving

2020 ◽  
Vol 10 (513) ◽  
pp. 478-484
Author(s):  
O. V. Ptashchenko ◽  
◽  
D. Y. Arkhypova ◽  
Keyword(s):  
Technology Development ◽  
Political Stability ◽  
Global Scale ◽  
Social Consequences ◽  
General Nature ◽  
Modern World ◽  
Political Aspect ◽  
The World ◽  
Global Problems ◽  
The Status

The article examines the main global problems of the modern world space, defining the main tendencies of overcoming the crisis and the further path of human development. Globalization indicates the general nature of most processes meaningful to mankind. Modern humanity represents an indivisible system of economic, political, social and cultural ties and interactions, which is significative for the unity of its future destiny. Informatization became the basis of globalization, reflecting the current level of technology development. Global problems are problems affecting all mankind, influencing the course of economic development and social sphere, also ecology and political stability. These problems require international cooperation, since none, even a highly developed State, is able solve them on its own. The number of hungry people in the world has increased over the past few years. Now every ninth person in the world is starving every day, suffering from a lack of nutrition. Both the food scarcity and hunger are among the greatest threats to the overall health of the human population exceeding malaria, tuberculosis or HIV. Responsibility for the planet should begin with responsibility for the country, because the crisis of a separate country complicates the world situation in the political aspect; ecological and resource crises jeopardize environmental equilibrium and complicate the problem of resources on a global scale; an economic crisis leads to social consequences in other countries.

An Exploratory Study of Infrastructure Barriers and the Role of Semantic Data Exchange Technologies in the Provisioning of Business Intelligence Services

2012 ◽  
Vol 3 (3) ◽  
pp. 45-59
Author(s):  
Rubén A. Mendoza
Keyword(s):  
Business Intelligence ◽  
Data Exchange ◽  
Business Processes ◽  
Technology Development ◽  
Semantic Data ◽  
Intelligence Services ◽  
The Status ◽  
Enterprise Level ◽  
It Executives

Business Intelligence (BI) has been a top technology development concern for high-ranking IT executives over the past decade. The objective of BI is to use data analysis as a competitive weapon, deeply integrated into business processes. The ability of an organization to provide enterprise-level BI services depends heavily on its IT strategy, itself a function of existing technology investment. Previous research has described four IT architecture stages ranging from isolated applications to modular services, each with increasing complexity and service capabilities. Representatives from four companies were interviewed about the status of their BI activities, and the resulting data helps identify common barriers faced by these organizations in the provisioning of enterprise-level BI services. Interview results also describe the success of a limited-scope operational BI system by one of these firms, and the role of semantic data exchange technologies, primarily XML, in this system.

scholarly journals Summary of Application of Magnetic Coupling Resonance Technology in Power Inspection UAV

2018 ◽  
Vol 228 ◽  
pp. 02007
Author(s):  
Ji Jiang ◽  
Xuanyi Liu ◽  
Xiaoming Zha
Keyword(s):  
Electric Field ◽  
Unmanned Aerial Vehicle ◽  
Technology Development ◽  
Magnetic Coupling ◽  
Research Literature ◽  
Status Quo ◽  
Field Inspection ◽  
Manual Inspection ◽  
The Status ◽  
Aerial Vehicle

With the improvement of technology, technology began to gradually applied to every field, electric field inspection also began to gradually enable unmanned aerial vehicle (uav) inspection instead of manual inspection. Articles in the domestic and foreign research literature of unmanned aerial vehicle (uav) magnetic coupling resonance charging basis, this paper introduces the unmanned aerial vehicle (uav) magnetic coupling resonance charging technology development and application of the status quo, points out the problems in the current study of, offers a new way for the further research in this field.

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