Nuclear Plant Modification in a Risk-Informed Environment

2002 ◽  
Author(s):  
Raymond H. V. Gallucci
Keyword(s):  
Power Plant ◽  
Nuclear Power Plant ◽  
Nuclear Power ◽  
Cost Benefit ◽  
Nuclear Plant ◽  
Regulatory Environment ◽  
Benefit Evaluation

This paper examines a specific nuclear power plant modification performed in a risk-informed regulatory environment. It quantifies both the permanent and temporary effects of the modification, and performs a cost-benefit evaluation.

New Generation of Diamond Toolings for Facilitating Decommissioning Operations

2011 ◽  
Author(s):  
Claude Besson ◽  
Erico Mariotti ◽  
Alexandre Mouysset ◽  
Lorenz zur Nedden ◽  
Bernard Delannay
Keyword(s):  
Power Plant ◽  
Nuclear Power Plant ◽  
Nuclear Power ◽  
Nuclear Plant ◽  
Diamond Tools ◽  
Nuclear Decommissioning ◽  
Specialized Equipment ◽  
New Generation

Diamond tools are well proven cutting, drilling and grinding technologies in many applications but need to be specifically optimized and adapted for the complex and varied structures of nuclear power plant in view of decontamination and decommissioning. The proper development and use of diamond tools in these extreme and complex conditions can only be achieved thanks to the combined talent of experienced nuclear plant contractors, engineers, technicians, operators of diamond tools, and the use of specialized equipment. This present paper is an overview of the possible applications of diamond tools in the different operations of Nuclear Decommissioning and Decontamination.

Design Concept of Composite Module for Nuclear Power Plant Construction

2004 ◽  
Author(s):  
Taihei Yotsuya ◽  
Kouichi Murayama ◽  
Jun Miura ◽  
Akira Nakajima ◽  
Junichi Kawahata
Keyword(s):  
Power Plant ◽  
Nuclear Power Plant ◽  
Nuclear Power ◽  
Large Scale ◽  
Construction Method ◽  
Nuclear Plant ◽  
Small Scale ◽  
Modular Construction ◽  
Plant Construction ◽  
Composite Module

A composite module construction method is to be examined reflecting one of the elements of construction rationalization of a future nuclear plant planned by Hitachi. This concept is based on accomplishments and many successes achieved by Hitachi through application of the modular construction method to nuclear power plant construction over 20 years. The feature of the composite module typically includes a planned civil structure, such as a wall, a floor, and a post, representing modular components. In this way, an increased level of rationalization is expected in the conventional large-scale nuclear plants. Furthermore, the concept aiming at the modularization of all the building parts comprising medium- or small-scale reactors is also to be examined. Additional aims include improved reductions in the construction duration and rationalization through use of the composite module. On the other hand, present circumstances in nuclear plant construction are very pressing because of economic pressures. With this in mind, Hitachi is pursuing additional research into the introduction of drastic construction rationalization, such as the composite module. This concept is one of the keys to successful future plant construction, faced with such a severe situation.

Russia will drop nuclear plans unless Turks buy in

2016 ◽  
Keyword(s):  
Power Generation ◽  
Power Plant ◽  
Nuclear Power Plant ◽  
Air Force ◽  
Nuclear Power ◽  
Nuclear Plant ◽  
Content Type ◽  
Bilateral Relations

Subject The Akkuyu nuclear plant that Turkey is building with Russia's Rosatom. Significance Since the Turkish air force downed a Russian warplane last November, bilateral relations have plunged to an all-time low. Rumours persist that Moscow has frozen funding for the Akkuyu nuclear power plant (NPP) and is unwilling to complete the project unless it can share the risk. Impacts Continued development would be an added incentive for Ankara and Moscow to repair relations. Abandoning the project would further strain relations between Ankara and Moscow. Turkey may look for other developers to complete the NPP while prioritising other forms of power generation.

A Nuclear Paradise

Kudankulam ◽  
2020 ◽  
pp. 32-70
Author(s):  
Raminder Kaur
Keyword(s):  
Power Plant ◽  
Nuclear Power Plant ◽  
Middle Class ◽  
Nuclear Fuel ◽  
Nuclear Power ◽  
Background Radiation ◽  
Nuclear Plant ◽  
Peninsular India ◽  
Visual Material ◽  
Alternative Sources

Chapter 2 grounds the study in an exploration of the ecological, material, and social contours of the region. It focuses on the backstories of Kudankulam as the site for a nuclear plant and the spaces of criticality that were generated. The formidable presence of the nuclear plant, visual, material and discursive spawned a range of reactions that spanned from intrigue to ambivalence to resistance. With an overview of ‘hot spots’ in Kanyakumari and Tirunelveli Districts, the prospect of more radioactivity applies not just to the Kudankulam Nuclear Power Plant but also to high levels of background radiation in peninsular India, and the mining of sand for atomic minerals particularly for alternative sources of nuclear fuel by way of thorium. Along the way, we assess the repercussions of new hierarchies with the migrant middle class of nuclear employees and the entrenchment of old ones along caste-communal lines.

scholarly journals Calculation of the Dose for Public Individuals Due to a Severe Accident at the Angra 2 Nuclear Plant, Brazil

2021 ◽  
Author(s):  
André Silva de Aguiar ◽  
Seung Min Lee ◽  
Gaianê Sabundjian
Keyword(s):  
Power Plant ◽  
Nuclear Power Plant ◽  
Nuclear Power ◽  
Nuclear Plant ◽  
Emergency Planning ◽  
Severe Accident ◽  
Whole Body ◽  
The Public ◽  
Protective Actions ◽  
Radionuclide Release

Through a severe accident at nuclear power plant Angra 2, the whole body dose effective of the individuals members of the public located in the Emergency Planning Zones (EPZs) will be calculated, and later, the protective actions in these EPZs will be analyzed. Two different scenarios of radionuclide release into the atmosphere will be considered. In the first scenario, 2 h of the release of Xe, Cs, Ba, and Te, and the second scenario, 168 h of release.

Fragility of a Flood Defense Structure Subjected to Multi-Hazard Scenario

2016 ◽  
Author(s):  
Saran Srikanth Bodda ◽  
Harleen Kaur Sandhu ◽  
Abhinav Gupta
Keyword(s):  
Power Plant ◽  
Nuclear Power Plant ◽  
Nuclear Power ◽  
Hurricane Sandy ◽  
Nuclear Plant ◽  
Gravity Dam ◽  
Concrete Gravity Dam ◽  
Element Analysis ◽  
Dam Foundation ◽  
Flood Defense

The March 2011 Fukushima Daiichi nuclear power plant disaster has highlighted the significance of maintaining the integrity of flood protection systems in the vicinity of a nuclear power plant. In the US, Oyster Creek nuclear plant was shut down when high storm surge during hurricane Sandy threatened its water intake and circulation systems. A gravity dam located upstream of a power plant can undergo seismic failure or flooding failure leading to flooding at the nuclear plant. In this paper, we present the results from a study on evaluating the fragilities for failure of a concrete gravity dam under both the flooding and the seismic events. Finite element analysis is used for modeling the seismic behavior as well as the seepage through foundation. A time-dependent analysis is considered to account for appropriate nonlinearities. Failure of dam foundation is characterized by rupture, and the failure of dam body is characterized by excessive deformation for the flooding and seismic loads respectively. The study presented in this paper has focused on a concrete gravity dam because of the need of validation of models which exist in prior studies only for concrete gravity dams. However, the concepts are directly applicable to any concrete flood defense structure.

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