A Study on Community-Based Reconstruction from Nuclear Power Plant Disaster - A Case Study of Minamisoma Ota Area in Fukushima -

2012 ◽  
Vol 7 (sp) ◽  
pp. 432-438 ◽  
Author(s):  
Tomoyuki Furutani ◽  
◽  
Keisuke Uehara ◽  
Jun Murai ◽  
Keyword(s):  
Power Plant ◽  
Nuclear Power ◽  
Measurement Method ◽  
Radiation Measurement ◽  
Community Based ◽  
Measurement Framework ◽  
Measurement Results ◽  
Before And After ◽  
Radiation Measurements

In this research, the authors developed a car-borne radiation measurement method for the farmland and roads in the Minamisoma Ota area of Fukushima that was devasteted by the Great East Japan Earthquake that occurred in northeast Japan on March 11, 2011, and a community-led radiation measurement framework was established and implemented. As a result, radiation measurements and visualization for farmlands, paddies, and forests, which had been conventionally unachievable, was made possible. Furthermore, effective verification of the effect of decontamination also became possible by feeding back radiation measurement results before and after decontamination to residents.

scholarly journals Differentiation and Integration of Evacuees with Regard to Lifting the Evacuation Order Following the Nuclear Power Plant Accident: A Case Study of Naraha and Tomioka Towns, Futaba District, Fukushima Prefecture

2018 ◽  
Vol 13 (6) ◽  
pp. 1125-1141
Author(s):  
Michimasa Matsumoto ◽  
Keyword(s):  
Power Plant ◽  
Nuclear Power Plant ◽  
Nuclear Power ◽  
Entire Area ◽  
Nuclear Power Plant Accident ◽  
Fukushima Prefecture ◽  
Before And After ◽  
Questionnaire Surveys

As of spring 2018, evacuation orders have been lifted from the entire area of Naraha Town and most of Tomioka, except for certain areas. While many evacuees have chosen their evacuation destinations as their permanent residences, some have returned to their former towns. This paper examines the factors involved in the “differentiation” and “integration” of Naraha and Tomioka residents before and after the disaster and the various forms they assume, based on the results of questionnaire surveys conducted in 2012 and 2015 as well as interviews conducted on a continuing basis since the disaster. In this process, it has become apparent that a split exists between Naraha, whose residents are moving toward “integration” with the lifting of the evacuation order, and Tomioka, whose residents are progressing toward “differentiation.”

scholarly journals Dialogue, radiation measurements and other collaborative practices by experts and residents in the former evacuation areas of Fukushima: A case study in Yamakiya District, Kawamata Town

2020 ◽  
Vol 55 (3) ◽  
pp. 215-224 ◽  
Author(s):  
T. Yasutaka ◽  
Y. Kanai ◽  
M. Kurihara ◽  
T. Kobayashi ◽  
A. Kondoh ◽  
...  
Keyword(s):  
Power Plant ◽  
Nuclear Power ◽  
Large Scale ◽  
Research Approach ◽  
Interactive Program ◽  
Collaborative Practices ◽  
Research Activities ◽  
Fukushima Daiichi ◽  
Radiation Measurements

This paper describes the involvement of the residents of the Yamakiya district of the Kawamata town, a former evacuation area after the accident of Fukushima Daiichi Nuclear Power Plant (FDNPP), in the on-going research activities of the authors on the behaviour of radioactive caesium in the environment. By relying on dialogue, measuring radiation, and other collaborative practices, this involvement enabled a series of actions to be taken to resolve the challenges related to the recovery after the lifting of the evacuation order that were appreciated by the residents. The paper also discusses the effects of the interactive program led by the Yamakiya School organized by the authors in cooperation with the residents including among others lectures, voluntary works and radiological surveys on local issues. Based on the above, the authors make recommendations on the desirable form of relationship between residents and experts after an event of large-scale environmental pollution including radiological contamination. Through these activities the authors have also gradually changed their research approach.

Dynamic Simulation Studies of Performed Additional Tests During FAT for Emergency Diesel Generators at Nuclear Power Plant

2016 ◽  
Author(s):  
Salah K. Kanaan ◽  
Amer Omanovic
Keyword(s):  
Power Plant ◽  
Nuclear Power Plant ◽  
Nuclear Power ◽  
Electric Circuit ◽  
Diesel Generator ◽  
Safety Regulations ◽  
Auxiliary Power ◽  
Current Voltage ◽  
Measurement Results ◽  
Generator Sets

In 2004, a decision was made to perform a modernization and a new power uprate of unit 2 at Oskarshamn nuclear power plant in Sweden. Among the most important reasons for this decision were new safety regulations from Swedish Radiation Safety Authority and ageing of important components. A project was established and became the largest nuclear power modernization in the world. The modernization led to the need of analysing the auxiliary power system to ensure that it could supply the unit after the uprate, given tolerances on current, voltage and frequency. During the process of developing models for the diesel generator sets, it turned out that the suppliers could not deliver enough satisfactory material for modelling the diesel engines, the speed controllers and the magnetization systems. Therefore, Oskarshamn nuclear power plant with the help of the manufacturers of the diesel generator sets carried out additional measurements in order to collect data for modelling. Based on electric circuit diagrams provided by the manufacturers, block diagrams of the magnetization systems were made. For the speed controllers, no information was available at all so it was assumed that the controller was of PI-type. The parameters of the magnetization systems and the speed controllers were then tuned using the measurement results. Finally, a comparison between simulated results and the measurement results were made, showing good agreement. This is especially true in the most commonly used operating interval of the diesel generator sets.

Verification of Plastic Interactive Systems

i-com ◽  
2015 ◽  
Vol 14 (3) ◽  
Author(s):  
Raquel Oliveira ◽  
Sophie Dupuy-Chessa ◽  
Gaëlle Calvary
Keyword(s):  
Power Plant ◽  
User Interfaces ◽  
Nuclear Power ◽  
Interactive Systems ◽  
System Model ◽  
Equivalence Checking ◽  
The Past ◽  
Different Levels ◽  
Formal Techniques

AbstractInteractive systems have largely evolved over the past years. Nowadays, different users can interact with systems on different devices and in different environments. The user interfaces (UIs) are expected to cope with such variety. Plastic UIs have the capacity to adapt to changes in their context of use while preserving usability. Such capability enhances UIs, however, it adds complexity on them. We propose an approach to verifying interactive systems considering this adaptation capability of the UIs. The approach applies two formal techniques: model checking, to the verification of properties over the system model, and equivalence checking, to compare different versions of a UI, thereby identifying different levels of UI equivalence. We apply the approach to a case study in the nuclear power plant domain in which several UI are analyzed, properties are verified, and the level of equivalence between them is demonstrated.

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