scholarly journals Estimation of level of performance functions forests radioactively contaminated territories

Author(s):  
Ivan Martynchuk

Forest resources are an integral part of economic, social and ecological development of the state. Making decisions as for the change and improving the system of forestry and the mechanism of management of it should be based on the results of comprehensive evaluation of implementation their functions by forest fund. The research is based on application of integrating estimation method to economic objects. The main functions of forest resources include productive, socio-economic, protective and preserving function. The method of evaluation of lamas their functions is developed, which is based on the method of integral evaluation and regulation of performing indicators implementation of specific functions. System of indicators is selected, which reflect the performance of the forest resources of each determined function. It was ascertained that degree of execution of their functions by forests of the four most radioactively contaminated districts of Zhytomyr oblast as one of the worst-affected by Chornobyl Nuclear Power Plant disaster differs significantly. This applies especially to provisional and protection functions.

2014 ◽  
Vol 541-542 ◽  
pp. 916-921 ◽  
Author(s):  
Li Xu ◽  
Ru Chao Deng ◽  
Chu Xu ◽  
Di Zhang ◽  
Chen Xing Sheng

For evaluate the risk of civil marine nuclear power plant, through the searching related standards for ship, external environmental parameters that the nuclear ship should be suited was found. Based on the characteristics of power plant of civil nuclear-powered ship, the hierarchy system of primary loop system was established and corresponding indicator marking criteria were formulated for the risk assessment. The result shows that the Reactor Safety Injection System (RIS), the Reactor Boron and the Water Supply System (REA), the Control Rods and the Hull of Fuel Canning are the key risk factors in the primary loop system. Finally, the comprehensive evaluation was carried out for collision, stranding and swing of multi-degree of freedom, and put forward relative countermeasures to cope with the possible risks based on the comprehensive evaluation and combined with the literatures.


2021 ◽  
Vol 30 (2) ◽  
pp. 305
Author(s):  
Dóra Lovas

<p>The aim of the article is to present the ruling of the Court of Justice of the European Union (CJEU) in the case of the Hinkley Point C nuclear power plant. This investment can also be related to the Paks II nuclear power plant investment, therefore the two investments are compared too. Both projects were examined by the European Commission, which take an important part when the national aid was awarded to Hinkley Point C and Paks II projects, and the decision of the CJEU also had influence on it. The author considers the European Commission’s aid conception positive, because the less developed countries are not forced to use only the renewables, but the environmental and security aspects of nuclear energy are also allowed (e.g. Hinkley Point C and Paks II nuclear power plants). The subsidy was allowed in both cases, but the reasons are different. In these cases, the limits of the EU energy politics can be seen, i.e. the right to select the package and the priority of the energy security and sustainable development. To mention an example for the difference, in Great Britain the energy sector was divided among the participants on the market but in Hungary the nuclear energy remained under state control. In the first option the state wanted to prove that it grants offset for the help to the general market services and in the second option the market investor principle was highlighted in order to show no other market participant act in other way. These points were not accepted, the state aid was provided both cases with permissible reasons because the projects condescend the goals of environmental policy and energy security. The decisions show that as a result of the efforts to protect the environment the dependency on energy increased and it cannot be solved only be encouraging the usage of the renewables. The permissive attitude of the European Commission can be found here and it is influenced by the increased state regulative roles. According to the author, it also appears in the environmentally friendly decisions which refers to the Paris Agreement’s fulfilment and the involvement of environmental requirements into politics. Moreover, the European Union tries to maintain its leader role in economics, which can be reached by the decrease of energy dependency and the exclusive usage of renewable energies is not the appropriate solution. The CJEU judgement is relevant in several respects. The article focuses primarily on the issue of environmental protection, state aid and the relation between the Euratom Treaty and the Treaty on the Functioning of the European Union.</p>


2020 ◽  
pp. 195-199
Author(s):  
V.V. Potapov ◽  
V.A. Il’in

The features for application of laser scanning of the lining geometry, the thickness measurement of the lining and the measurement of hardness with the subsequent assessment of mechanical properties to monitor the state of the pressurized volume of the containment envelope of nuclear power plants with VVER are considered.


2020 ◽  
Author(s):  
Susumu Yamada ◽  
Masahiko Machida ◽  
Ayako Iwata ◽  
Shigeyoshi Otosaka ◽  
Takuya Kobayashi ◽  
...  

&lt;p&gt;Just after Fukushima Daiichi Nuclear Power Plant (1F) accident occurred in March 2011, the direct discharges of highly-contaminated water from reactor Unit 2 and 3 into the 1F port followed. After the suppressions of the direct discharges, Kanda (Biogeosci. 10, 6107&amp;#8211;6113, 2013) suggested that relatively small amounts of run-off of a radionuclide (Cs-137) from 1F port into Fukushima coastal region has continued based on his estimation method. However, Kanda&amp;#8217;s estimation period was limited up to September 2012. Therefore, we expand the estimation period of the discharged inventory up to very recently, March 2020 with significant accuracy improvements by the present authors. As a result, we find that totally, in the period over 9 years, the discharged inventory has gradually diminished together with various characteristic fluctuations. In this presentation, we analyze the observed diminishing trends with temporal fluctuations and discuss their relationships with various suppression measures and constructions toward decommissioning of 1F. Furthermore, we estimate the annual discharged amount of Cs-137 and evaluate its impacts on the coastal area in terms of seawater concentrations.&lt;/p&gt;


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