scholarly journals Mesh generation for radioactive waste management tasks

2021 ◽  
Vol 14 (1) ◽  
pp. 87-95
Author(s):  
R. A. Butov ◽  
◽  
N. I. Drobyishevsky ◽  
E. V. Moiseenko ◽  
Yu. N. Tokarev ◽  
...  
Keyword(s):  
Radioactive Waste ◽  
Waste Management ◽  
Mesh Generation ◽  
Host Rock ◽  
Complex Objects ◽  
Radioactive Waste Management ◽  
Python Language ◽  
Size Number ◽  
Waste Container ◽  
Type Size

The article describes an approach to mesh generation allowing to address radioactive waste management tasks. The approach is based on representing an object as a set of simple geometric shapes (primitives). The characteristics of the mesh (type, size, number of elements) are controlled at a primitive level. The program allows to combine primitives using boolean operations to describe complex objects (for example, intrusions in host rock and their intersections with excavations). To describe nested objects (for example, a radioactive waste container in a borehole or a borehole in a host rock), the program implements a hierarchy of primitives. This approach can be used to generate meshes of objects with regular geometry and/or layered structures. The program is written in Python language. The mesh is created by editing the input files in JSON format.

Optimalisation by the Conditioning of Liquid and Solid Low- and Intermediate Radioactive Waste for Final Disposal in Slovakia

2003 ◽  
Author(s):  
Vladimir Remia´sˇ ◽  
Dusan Kra´sny
Keyword(s):  
Radioactive Waste ◽  
Waste Management ◽  
Waste Treatment ◽  
Fiber Reinforced Concrete ◽  
Radioactive Waste Management ◽  
Waste Package ◽  
Final Disposal ◽  
Whole Process ◽  
Waste Container ◽  
Radioactive Waste Treatment

The radioactive waste treatment and conditioning are the most important step in radioactive waste management. In Slovak Republic the waste treatment and conditioning are including in the “Strategy of Radioactive waste management”. According to this “Strategy..” all sorts of low- and intermediate radioactive waste have to be conditioned to the fiber reinforced concrete container, i.e. “waste package”, only acceptable form for disposal in surface repository in Mochovce. In spite of good design of “Strategy..., in whole process should be occur some difficulty or difference. In the Radioactive Waste Treatment and Conditioning Center in Jaslovske Bohunice, built in 1999, the German treatment and conditioning technology together with French design of waste container was engaged. Presented paper summarized the practices during about 3 years operational period of conditioning radwaste in Jaslovske Bohunice. Till the presented results was achieved the harmonization of conditioning technology, particularly the cementation, has been necessary to accomplish with selected waste package. This aim had been reached after 1 years testing and analyzing with main fixed-target to find suitable formulation for radioactive grouting. The specific experiences had been received after 3 years operational period, which could be use for improving of whole process. In next time, the effects of conditioning process should be done especially in connection to the final disposal namely in term of economical efficiency. Based on present practice the great allowance indicated in area of concentration limits exploitation.

An Overview of the Draft of ‘Nuclear Materials and Radioactive Waste Management Act’

2013 ◽  
Author(s):  
Huan Lin ◽  
Tai-Wei Lan ◽  
Min-Tsang Chang ◽  
Wuu-Kune Cheng
Keyword(s):  
Radioactive Waste ◽  
Waste Management ◽  
Public Involvement ◽  
Nuclear Materials ◽  
Regulatory Body ◽  
Nuclear Facilities ◽  
Radioactive Waste Management ◽  
Regulatory Capacity ◽  
Concept Of Information ◽  
The Impact

The “Nuclear Materials and Radioactive Waste Management Act” (NMRWMA) in Taiwan has been in use since 2002. To promote further administrative efficiency and improve regulatory capacity, an amendment of the act has been initiated by the Atomic Energy Council (AEC). It is now being reviewed by outside experts and related communities so as to include the best understanding of risk management factors. For the future decommissioning challenges of nuclear facilities, the act is also being amended to comply with the regulatory requirements of the decommissioning mandates. Currently the Taiwan government is conducting government reorganization, and AEC will be reformed but will remain as an independent regulatory body. AEC will then be capable of improving the regulatory capacity for facilitating licensing and inspection, ensuring operational safety, environmental protection and public involvement, and giving a more flexible administrative discretion, such as expending the margin of penalty. The amendment is also required to provide a formal legal basis for the Nuclear Backend Fund, and to mandate the waste producers to take responsibility for any final debt repayment. In addition, this amendment promotes measures to prevent accidents or emergencies concerning radioactive materials and facilities and procedures to reduce the impact and effect of any unexpected events. Furthermore, this amendment intends to implement the concept of information transparency and public participation so as to meet the public needs. Finally, radioactive waste final disposal tasks have to be completed by waste producers under the supervision of the AEC.

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