Numerical investigation on transverse flow of helical …
The helical cruciform fuel (HCF) rod assembly is a new type of fuel for the lead-bismuth (LBE) fast reactor. It can be self-positioned and realize a coolant mixing without wrapped wire or grid spacer. This kind of fuel assembly can not only realize the function of the traditional wire-wrapped fuel assembly, but also omit the wire -wrapped ...
Experimental investigation of pressure fluctuation and
1. Introduction. Lead-cooled Fast Reactors (LFRs) is a kind of reactor with coolant as lead or lead-based eutectic (LBE), and LFRs is one of the major candidates among the fourth-generation reactors launched by the US Department of Energy (DOE) in the Fourth Generation International Forum (GIF) [1].There are the following thermal …
Numerical simulation on the thermal stratification in the lead …
Lead-cooled fast reactor (LFR) adopts the liquid metal lead as the coolant and is beneficial to the fuel sustainability and high safety. LFR is suffering from the serious thermal stratification due to the pool type design and high operation temperature, leading to the threatening thermal stress on the structure.
SPARK-NC: A Lead-Bismuth-Cooled Small …
In this study, a conceptual design was developed for a lead-bismuth-cooled small modular fast reactor SPARK-NC with natural circulation and load following capabilities. The nominal rated power …
SAFETY PARAMETERS OF ADVANCED RBEC-M LEAD-BISMUTH COOLED FAST REACTOR
A concept of the RBEC lead-bismuth fast reactor is a synthesis, on one hand, experience in development and operation of fast sodium power reactors and reactors with Pb-Bi coolant, and, on the ...
Development and verification of lead-bismuth cooled …
Lead-bismuth cooled fast reactor eliminates the need for large high-pressure vessels, have simple auxiliary systems, and have low construction and operation and maintenance costs.
GIF Portal
The Lead-cooled Fast Reactors (LFRs) feature a fast neutron spectrum, high temperature operation, and cooling by either molten lead or lead-bismuth eutectic (LBE), both of which support low-pressure operation, have very good thermodynamic properties, and are relatively inert with regard to interaction with air or water.
MicroURANUS: Core design for long‐cycle lead‐bismuth‐cooled fast
A core design of MicroURANUS, a long‐cycle lead‐bismuth‐cooled fast nuclear reactor for marine applications, is presented. It aims to generate a power of 60MWth, which can be regulated during operation. MicroURANUS was designed to achieve a small burnup reactivity swing for 30 effective full‐power years of a lifetime without …
Fuel cladding damage assessment based on reactivity
1. Introduction. The lead-bismuth eutectic (LBE) has obvious advantages of excellent thermal-physical, chemical properties and forgiving core behavior mainly owing to its negative reactivity coefficient (IAEA, 2012, OECD/NEA, 2007, Zhang, 2013).As a result, Lead cooled Fast Reactor (LFR) was selected as one of the six Generation-IV reactor …
Fast-neutron reactors, Fast nuclear reactors | IAEA
The fast neutron spectrum allows fast reactors to largely increase the energy yield from natural uranium as compared to thermal reactors. This high utilization …
Abstract and Figures
diagram of the small lead – bismuth fast reactor SPALLER-100 core is shown in Figure 4 (cross-section view) and the main parameters of the SPALLER-100 is listed in Table 1 .T h ec o r e
Thermal hydraulic characteristics of spiral cross rod
The flow and heat transfer behavior of self-structured spiral cross rod bundles in lead–bismuth-cooled fast reactor is analyzed with CFD methods. A computational model of spiral-cross-section fuel rod was established, and the velocity and temperature fields in the triangular arrangement of the fuel rod were numerically simulated. ...
Development and validation of the lead-bismuth …
The lead-cooled fast reactor refers to a fast neutron reactor that uses liquid lead or a lead-bismuth eutectic alloy as a coolant. Compared to traditional pressurized …
Thermal design of printed circuit heat exchanger used for lead-bismuth …
Lead-bismuth fast reactor is a Generation IV (GEN IV) nuclear reactor system with great development potential for its enhanced safety, economy and feasibility [1]. With more than 60 years of operating experience, it has attracted more and more attention around the world. In addition, with limited industrial and grid infrastructure, the ...
Sub-channel analysis of lead–bismuth fast reactor fuel …
The lead bismuth eutectic (LBE) cooled fast reactor fuel assemblies in China Initiative Accelerator Driven subcritical System (CiADS) are supported by wire spacers, and the sub-channel code is a significant analysis method to evaluate the thermal–hydraulic behavior of fuel assemblies. In this study, a sub-channel analysis code for LBE coolant ...
International Conference on Fast Reactors and …
Fast reactor technologies include sodium, lead, lead-bismuth eutectic, gas, molten salt and supercritical water-cooled systems, as well as hybrids, such as accelerator driven systems. Several …
Verification and application of SuperMC3.3 to lead-bismuth-cooled fast
The purpose of this study is to verify the applicability of SuperMC to the lead-bismuth-cooled fast reactor RBEC-M. The multi-temperature cross-section generation function of SuperMC was employed ...
Development and verification of lead-bismuth …
Lead-bismuth cooled fast reactor eliminates the need for large high-pressure vessels, have simple auxiliary systems, and have low construction and operation and maintenance costs. The research and …
Lead-Cooled Fast Reactor
Lead-cooled fast reactors (LFRs) are fast-spectrum reactors cooled by molten lead or lead alloys, such as the eutectic mixture of lead and bismuth (LBE). They operate at …
A sub-channel analysis code for advanced lead bismuth fast reactor
The preliminary design of advanced lead bismuth fast reactor such as ELSY, SSTAR, PEACER and PBWFR has already been initiated, but the bundle geometry and fuel composition have not been individually analyzed with the sub-channel method. Therefore, a reliable and stable sub-channel code is necessary and the PBWFR sub …
Conceptual design of oil field energy supply system based …
Moreover, the lead–bismuth fast reactor uses lead–bismuth eutectic (LBE) with high boiling point, low melting point and good thermal stability as coolant, which can operate under low pressure. In addition, it adopts integrated pool structure, compact equipment, and can be miniaturized, which can be better applied to heavy oil thermal ...
2.6-Overview of Lead-Cooled Fast Reactor …
Lead-Bismuth Eutectic (LBE) is also an LFR coolant option – Lower melting point of LBE (~125 o C vs ~330 o C for pure lead) is a significant advantage against …
Lead-Cooled Fast Reactor
The Lead-cooled fast reactors (LFRs) are cooled by either pure molten Lead or its alloy; Lead and bismuth eutectic [19–21]. This is known as LBE. These two coolant-based reactors are also referred to as heavy metal-cooled reactors (HMRs). The boiling point of Lead and LBE are 2010 K and 1943 K, respectively.
International Conference on Fast Reactors and Related …
Fast reactor technologies include sodium, lead, lead-bismuth eutectic, gas, molten salt and supercritical water-cooled systems, as well as hybrids, such as accelerator driven systems. Several demonstration projects, ranging from small to large scale, are under study, design and construction.
Overview on Lead-Cooled Fast Reactor Design and Related Technologies
The next generation of nuclear energy systems, also known as Generation IV reactors, are being developed to meet the highest targets of safety and reliability, sustainability, economics, proliferation resistance, and physical protection, with improved performances compared with the currently licensed plants or those presently being built. …
Numerical study on conjugate heat transfer
The Printed Circuit Heat Exchanger (PCHE) is the optimal heat transfer structure of the fourth-generation advanced Lead–Bismuth Eutectic (LBE) cooled fast reactor coupling with the supercritical carbon dioxide (S-CO 2) Brayton cycle system.It is of great significance to study the conjugate heat transfer characteristics between LBE with …
Modular Lead-Bismuth Fast Reactors in Nuclear Power
On the basis of the unique experience of operating reactors with heavy liquid metal coolant–eutectic lead-bismuth alloy in nuclear submarines, the concept of modular small fast reactors SVBR-100 for civilian nuclear power has been developed and validated. The features of this innovative technology are as follows: a monoblock …
Heavy-Metal Aerosol Transport in a Lead-Bismuth-Cooled Fast Reactor …
Heavy-Metal Aerosol Transport in a Lead-Bismuth-Cooled Fast Reactor with In-Vessel Direct-Contact Steam Generation. ... A key technical issue of this reactor concept is the consequences of Pb-Bi aerosol generation within the vessel, its transport within the power cycle components and impact on the design and operation of the …
Overview of lead-cooled fast reactor activities
Abstract. The lead-cooled fast reactor (LFR) features a fast neutron spectrum, high temperature operation, and cooling by molten lead or lead–bismuth eutectic (LBE), low-pressure, chemically inert liquids with very good thermodynamic properties. It would have multiple applications including production of electricity, hydrogen and …
Modular Lead-Bismuth Fast Reactors in Nuclear …
Abstract. On the basis of the unique experience of operating reactors with heavy liquid metal coolant–eutectic lead-bismuth alloy in nuclear submarines, the …