No abstract available

[en] A cutting tool is specially designed to open plutonium containers. It comprises two halves rotating together with three cutter wheels. CLearance is provided to prevent too much vibrations or stress when the container presents defects

[en] Minimising contaminated waste is a top priority in decommissioning projects in the nuclear sector. In the area of building decontamination, efficient processing of all affected concrete ceilings, walls and floors is essential and quickly results in a surface area of several thousand square metres to be processed. Decontamination is mainly carried out by using milling machines, e. g. rotary cultivators. Within the scope of a research project (BMWI, ZIM, funding code: KF2286004LL3) the project partners Karlsruher Institut fuer Technologie (KIT) and Contec Maschinenbau and Entwicklungstechnik GmbH (Alsdorf/Sieg) investigated the influence of the geometry of the cutting tools on concrete removal. This article shows results from the test program conducted at the Institute for Technology and Management in Construction (TMB) of the KIT, Department of Deconstruction of Conventional and Nuclear Structures.

[en] The paper is devoted to the topical issue of the formation of a variation method for calculating the accuracy of metal cutting systems. The current state of the basic variation method for calculating the geometric accuracy of metal cutting machines is determined. A transition from considering the geometric accuracy of only the metal cutting machine to considering the accuracy of the metal cutting system is made, which includes the metal cutting tool. The proposed directions for the development of the method are recommended to be divided into groups according to the criterion of linearized and non-linear formulation when building accuracy balances. The solution of the problem posed in the paper serves as a methodological basis for work on normalization and compensation of geometrical errors of machine tools, including the creation of the foundations of standards for the accuracy of metal-cutting machines and tools. This work is useful for scientists engaged in the study of the geometric accuracy of processing on metal-cutting machines, as well as the normalization and compensation of the geometric errors of machines. (paper)

[en] The fuel element on a support is perpendicular to the cut edge, it is maintained by clamps and between 2 cuttings it is advanced of the wanted length. The ends are cut with a cutter for ends and evacuated separately. The pencils are cut inside a cavity for containment and evacuated through an opening

No abstract available

No abstract available

[en] In micro and medium enterprises of Tofu, there is an activity that is done repeatedly and traditionally, namely the cutting process. The cutting process is done by using a kitchen knife so that it is not efficient and able to cause fatigue for the operator. Additionally, there is also the possibility of different cut sizes of tofu because the cutting is done without using a measurement tool. The operator just follows the mild flow on the tofu. The purpose of this study is to plan a manufacture of tofu cutting tools. This study used The Analytical Hierarchy Process method in which this method begins by conducting interviews regarding the choices in level 1, 2 and 3 actions to several respondents. The result from a variety of alternative solutions based on requirements specifications showed that the products of tofu cutters were selected with materials, such as pine wood, strings, handles, naples and naple bolts. This tool will produce tofu whose size is 52 x 52 cm2. The product design is carried out based on the specifications of materials and tools to produce a simple design so that the tofu cutter tool is easy to use and low cost. (paper)

[en] A few states started in the early forties/fifties the first development of nuclear technologies. Some of them now own a great amount of nuclear installations which entirely fulfill their assignment. In some cases, the life time of the nuclear power plants which were scheduled for approximately 30 years have been extended by more than 50%, the other ones as well as fuel production and enrichment plants, experimental or research reactors, will have to be dismantled in the near future. The decommissioning of those installations is definitely one of the twenty first century challenge. It is differently managed depending on the countries and their energetic and development policies, their financial consideration, the availability of qualified engineers or specialized companies to handle such projects. The final aim of decommissioning is to recover the geographic site in its original condition. A real cooperation is existing in between the people involved in different countries through different types of conferences and meetings during which the main subjects are: - The safety of the operators during all the phases of decommissioning operations. - Restrictions and dimensioning of the required equipment - Storage and waste management - Elaboration of procedures for recording all different steps and processes. Some of the techniques are described in this paper without being exhaustive. (author)

[en] Westinghouse capitalizes more than 30 years of experience in the cutting of internal components of reactor and their packaging in view of their storage. Westinghouse has developed and validated different methods for cutting: plasma torch cutting, high pressure abrasive water jet cutting, electric discharge cutting and mechanical cutting. A long feedback experience has enabled Westinghouse to list the pros and cons of each cutting technology. The plasma torch cutting is fast but rises dosimetry concerns linked to the control of the cuttings and the clarity of water. Abrasive water jet cutting requires the installation of costly safety devices and of an equipment for filtering water but this technology allows accurate cuttings in hard-to-reach zones. Mechanical cutting is the most favourable technology in terms of wastes generation and of the clarity of water but the cutting speed is low. (A.C.)