scholarly journals Experimental Study on RFID Antenna Reading Areas in a Tunnel System

2017 ◽  
Vol 2017 ◽  
pp. 1-15
Author(s):  
Kai Kordelin ◽  
Jaana Kordelin ◽  
Markku Johansson ◽  
Johanna Virkki ◽  
Leena Ukkonen ◽  
...  
Keyword(s):  
Monitoring System ◽  
Nuclear Waste ◽  
Research Area ◽  
Diffraction Scattering ◽  
Nuclear Waste Storage ◽  
Waste Storage ◽  
Measurement Results ◽  
Radiofrequency Identification ◽  
Tunnel System ◽  
Antenna Location

We study optimized antenna reading area mappings for a radiofrequency identification- (RFID-) based access monitoring system, used in an underground nuclear waste storage facility. We shortly introduce the access monitoring system developed for the ONKALO tunnel in Finland and describe the antenna mounting points as well as the research area. Finally, we study the measurement results of the antenna reading areas and factors that affect the reading area size. Based on our results, in addition to antenna location and direction, absorption to obstacles, reflections, diffraction, scattering, and refraction affect the antenna reading area.

scholarly journals Development and Implementation of an RFID-Based Tunnel Access Monitoring System

2016 ◽  
Vol 2016 ◽  
pp. 1-10 ◽  
Author(s):  
Kai Kordelin ◽  
Jaana Kordelin ◽  
Markku Johansson ◽  
Johanna Virkki ◽  
Leena Ukkonen ◽  
...  
Keyword(s):  
Monitoring System ◽  
Nuclear Waste ◽  
Fire Department ◽  
Storage Facility ◽  
Nuclear Waste Storage ◽  
Monitoring Period ◽  
Used Nuclear Fuel ◽  
Waste Storage ◽  
Safety Improvement ◽  
One Year

Due to safety reasons, the exact number and location of people working in an underground tunnel need to be known all the time. This work introduces the development and implementation of an RFID-based access monitoring system for the ONKALO nuclear waste storage facility. This system was taken into use in 2010 and was systematically monitored for one year. The system principle and the used equipment are presented in this paper together with the reliability evaluation results of the implemented system. According to the field use evaluation of the ready system, the reading reliability at the end of the monitoring period was 100%. In addition, even after the successful monitoring period, the system has been updated and new features for safety improvement have been created based on fire department guidelines and achieved user experience. In the future, the RFID system has been planned to be used also in the final depositing of the used nuclear fuel and buffer materials.

scholarly journals (Hydroxy)apatite on cement: insights into a new surface treatment

2021 ◽  
Author(s):  
Ronald Joseph Turner ◽  
Pieter Bots ◽  
Alan Richardson ◽  
Paul Bingham ◽  
Alex Scrimshire ◽  
...  
Keyword(s):  
Low Temperature ◽  
Surface Treatment ◽  
Nuclear Waste ◽  
Environmental Remediation ◽  
Coating Material ◽  
Hydroxy Apatite ◽  
Nuclear Waste Storage ◽  
Waste Storage ◽  
Architectural Preservation

(Hydroxy)apatite [Ca10(PO4)6(OH)2], has emerging potential as a cement coating material, with applications in environmental remediation, nuclear waste storage and architectural preservation. In these low temperature environments and when precipitating from...

scholarly journals Management of the Energy and Economic Potential of Nuclear Waste Use

Energies ◽  
2021 ◽  
Vol 14 (12) ◽  
pp. 3709
Author(s):  
Bader Alshuraiaan ◽  
Sergey Pushkin ◽  
Anastasia Kurilova ◽  
Magdalena Mazur
Keyword(s):  
Nuclear Fuel ◽  
Nuclear Waste ◽  
Spent Nuclear Fuel ◽  
Integrated Approach ◽  
Economic Potential ◽  
Nuclear Waste Storage ◽  
Scientific Discussion ◽  
Management Algorithm ◽  
Waste Storage ◽  
The Eu

Recently, issues related to the effects (benefit or harm) of processing nuclear waste and its further use as fuel have been increasingly often raised in the scientific discussion. In this regard, the research aims to investigate issues related to the assessment of the economic potential of nuclear waste use, as well as the cooperation between states in the context of the reduction of risks associated with nuclear waste storage and processing. The research methodology is based on an integrated approach, including statistical, factor analysis, and the proposed system of performance indicators for managing spent nuclear fuel use. The research was carried out on the basis of materials from Russia and the EU countries. In the course of the study, a model of cooperation between states has been developed (based on the example of technologies and methods of processing nuclear waste used in the EU and Russia) according to the nuclear waste (spent nuclear fuel) management algorithm. The model considers the risks and threats associated with ecology and safety. The developments and other results described in the study should be used in further research devoted to the use of nuclear waste as heat-producing elements.

Effect on the structure and stability of iron phosphate glass with Sb and Te-ion loading for nuclear waste storage application

2021 ◽  
Vol 570 ◽  
pp. 121016
Author(s):  
Akhilesh C. Joshi ◽  
Mainak Roy ◽  
Dimple P. Dutta ◽  
Raman K. Mishra ◽  
Sher Singh Meena ◽  
...  
Keyword(s):  
Nuclear Waste ◽  
Phosphate Glass ◽  
Iron Phosphate ◽  
Nuclear Waste Storage ◽  
Structure And Stability ◽  
Waste Storage

scholarly journals THE EFFICIENCY ASSESSMENT OF THE STATE SYSTEM OF NUCLEAR SAFETY CONTROL OF NSC-SO

2020 ◽  
pp. 71-80
Author(s):  
R.L. Godun ◽  
A.O. Doroshenko ◽  
D.О. Muliar
Keyword(s):  
Monitoring System ◽  
High Frequency ◽  
Comprehensive Analysis ◽  
Nuclear Safety ◽  
Nuclear Waste Storage ◽  
Safety Control ◽  
Waste Storage ◽  
Efficiency Assessment ◽  
Alarm Systems ◽  
Safety Monitoring System

According to the results of a comprehensive analysis, it was found that the nuclear safety monitoring system (NSMS) does not fully comply with the requirements put forward to it. By assessing the sufficiency of the detection points of this monitoring system, it was found that there is no monitoring at the cluster of nuclear fissile materials (NFM) in the central hall and at the “northern” cluster in 305/2 rooms. The effectiveness of monitoring the “southern” cluster of NFM in the room. 305/2 is insufficient and does not comply with the standards regulated by the rules of nuclear safety. Also, a number of other requirements to the NSMS (as the emergency alarm systems of the spent nuclear waste storage facility) are not fulfilled. It is proposed to re-arrange the measuring channels (MC) of the system, decommission excess (non-informative) MC and use their equipment to organize new effective monitoring points; to upgrade the software and arrange individual ground of the system to reduce the influence of high-frequency interference.

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