Search results for "nuclear power"

Nuclear Analysis of an ITER Blanket Module

2013

ITER blanket system is the reactor’s plasma-facing component, it is mainly devoted to provide the thermal and nuclear shielding of the Vacuum Vessel and external ITER components, being intended also to act as plasma limiter. It consists of 440 individual modules which are located in the inboard, upper and outboard regions of the reactor. In this paper attention has been focused on to a single outboard blanket module located in the equatorial zone, whose nuclear response under irradiation has been investigated following a numerical approach based on the Monte Carlo method and adopting the MCNP5 code. The main features of this blanket module nuclear behaviour have been determined, paying part…

Radioactivity control strategy for the JUNO detector

2021

JUNO is a massive liquid scintillator detector with a primary scientific goal of determining the neutrino mass ordering by studying the oscillated anti-neutrino flux coming from two nuclear power plants at 53 km distance. The expected signal anti-neutrino interaction rate is only 60 counts per day, therefore a careful control of the background sources due to radioactivity is critical. In particular, natural radioactivity present in all materials and in the environment represents a serious issue that could impair the sensitivity of the experiment if appropriate countermeasures were not foreseen. In this paper we discuss the background reduction strategies undertaken by the JUNO collaboration…

The utmost ends of the nuclear fuel cycle: Finnish perceptions of the risks of uranium mining and nuclear waste management

2013

There has been substantial social scientific research to determine how people perceive the risks of nuclear power, wastes, and waste management, but not much attention has been given to risk perceptions of other types of nuclear activities. Knowledge about attitudes towards uranium mining and exploitation is increasing, and more attention should be paid to how people perceive the risks of both ends of the nuclear fuel cycle. Therefore, the aim of this paper is to analyze the risk perceptions towards nuclear waste and uranium mining and how these perceptions relate to each other. The analysis is based on Finnish survey data (N = 1180) gathered in 2007. Renewed international interest in nucle…

Cover Picture: Uranium from German Nuclear Power Projects of the 1940s— A Nuclear Forensic Investigation (Angew. Chem. Int. Ed. 45/2015)

2015

A critical assessment of global uranium resources, including uranium in phosphate rocks, and the possible impact of uranium shortages on nuclear powe…

2013

International audience

Transient analysis of "2 inch Direct Vessel Injection line break" in SPES-2 facility by using TRACE code

2015

In the past few decades a lot of theoretical and experimental researches have been done to understand the physical phenomena characterizing nuclear accidents. In particular, after the Three Miles Island accident, several reactors have been designed to handle successfully LOCA events. This paper presents a comparison between experimental and numerical results obtained for the “2 inch Direct Vessel Injection line break” in SPES-2. This facility is an integral test facility built in Piacenza at the SIET laboratories and simulating the primary circuit, the relevant parts of the secondary circuits and the passive safety systems typical of the AP600 nuclear power plant. The numerical analysis her…

TRITIUM - A Real-Time Tritium Monitor System for Water Quality Surveillance

2018

In this work the development results of the TRITIUM project is presented. The main objective of the project is the construction of a near real-time monitor for low activity tritium in water, aimed at in-situ surveillance and radiological protection of river water in the vicinity of nuclear power plants. The European Council Directive 2013/51/Euratom requires that the maximum level of tritium in water for human consumption to be lower than 100 Bq/L. Tritium levels in the cooling water of nuclear power plants in normal operation are much higher than the levels caused by the natural and cosmogenic components, and may easily surmount the limit required by the Directive. The current liquid-scint…

Physics potential of the Jiangmen underground neutrino observatory

2019

JUNO (Jiangmen Underground Neutrino Observatory) is a 20 kton multipurpose neutrinodetector under construction in China and it will be completed in 2021. The detector will belocated near the the city of Jiangmen, 53 km away from two nuclear power plants that willprovide the neutrino flux for the main sear of the observatory. The main physics goal is the determination of the neutrino Mass Hierarchy, even if will play animportant also in other topics, such as: neutrino oscillation, solar neutrino, SuperNova neutrinos,geoneutrinos and atmosperic neutrinos among others

The merits and limits of pooling data from nuclear power worker studies

2015

Analysis of Primary/Containment Coupling Phenomena Characterizing the MASLWR Design During a SBLOCA Scenario

2012

Today considering the world energy demand increase, the use of advanced nuclear power plants, have an important role in the environment and economic sustainability of country energy strategy mix considering the capacity of nuclear reactors of producing energy in safe and stable way contributing in cutting the CO2 emission (Bertel & Morrison, 2001; World Energy Outlook-Executive Summary, 2009; Wolde-Rufael & Menyah, 2010; Mascari et al., 2011d). According to the information’s provided by the “Power Reactor Information System” of the International Atomic Energy Agency (IAEA), today 433 nuclear power reactors are in operation in the world providing a total power installed capacity of 366.610 G…