A Gas Turbine-Modular Helium Reactor (GT-MHR) is a 600 MW t helium cooled high temperature reactor with increased efficiency (up to 47% [14]), which is designed to operate with different kinds of fuels. Each reactor module is composed of two parts. First part is the reactor, where the nuclear fission takes place and helium is …

The Gas Turbine – Modular Helium Reactor (GT MHR) is an advanced gas-cooled reactor currently under development in a joint United States – Russian Federation program to provide capacity for disposition of surplus weapons plutonium. The GT-MHR is designed to provide very high safety, high thermal efficiency and environmental advantages.

A detailed exergoeconomic analysis is performed for a combined cycle in which the waste heat from the Gas Turbine-Modular Helium Reactor (GT-MHR) is recovered by an ammonia–water power/cooling cogeneration system. Parametric investigations are conducted to evaluate the effects of decision variables on the …

General Atomics Electromagnetic Systems (GA-EMS) announced today that it is collaborating with Framatome Inc. to develop a new helium-cooled 50-Megawatt electric (MWe) Fast Modular Reactor (FMR) concept that will produce safe, carbon-free electricity and can be factory built and assembled on-site, which will reduce costs and …

8.5 Summary. HTGRs are thermal neutron reactors with helium coolant, graphite moderator, and fully ceramic-coated particle fuel elements that can reach an exit temperature of 700°C–1000°C. Developed from early gas-cooled reactors in the 1950s, the latest HTGRs use modular technology, and the next step in development is VHTR.

Summary. The Gas Turbine – Modular Helium Reactor (GT-MHR) couples a High Temperature Gas-cooled Reactor (HTGR) with a Brayton power conversion cycle to produce electricity at high efficiency. It is based on HTGR technology developed over the past. 40 years that includes the design, construction and operation of seven HTGR plants.

The HTGR design option being advanced by General Atomics for the NGNP demonstration plant, and for follow-on commercial deployment, is the Steam Cycle Modular Helium Reactor (SC-MHR). The SC-MHR, which is the subject of this paper, uses fuel elements in the form of hexagonal blocks, which are stacked together to form the reactor …

The Gas Turbine – Modular Helium Reactor (GT-MHR) couples a High Temperature Gas-cooled Reactor (HTGR) with a Brayton power conversion cycle to produce electricity at …

The HTGR design option being advanced by General Atomics for the NGNP demonstration plant, and for follow-on commercial deployment, is the Steam Cycle Modular Helium Reactor (SC-MHR). The SC-MHR, which is the subject of this paper, uses fuel elements in the form of hexagonal blocks, which are stacked together to form the …

Design Process for Modular Helium-Cooled Reactor Plants – A revision of the current standard is being initiated. – The revision will focus on making the standard more inclusive of other high temperature gas reactor types. This will include a broader range of fuel particle designs and coatings, and different types of gas coolants.

Gas Turbine-Modular Helium Reactor (GTMHR) is one of these advanced energy conversion technologies. A GTMHR can achieve a thermal efficiency of 48% when helium gas is heated in nuclear reactor to a temperature of around 850 °C [3]. However, substantial amount of low grade thermal energy (more than 300 MW) is still dumped from …

The study began with an analysis of the current 600 MWt GT-MHR (Gas Turbine-Modular Helium Reactor). The numerical model was validated by other studies. Then, three alternative operating ...

The Modular Helium Reactor (MHR) builds on 30 years of international gas-cooled reactor experience utilizing the unique properties of helium gas coolant, graphite moderator and coated particle fuel. To efficiently utilize the high temperature potential of the MHR, an innovative power conversion system has been developed featuring an …

Nuclear Safety Design Process for Modular Helium-Cooled Reactor Plants. This standard applies to the safety design process for plants. This standard provides a process for establishing top-level safety criteria; safety functions; top-level design criteria; licensing-basis events; design-basis accidents; safety classification of systems ...

The Gas Turbine-Modular Helium Reactor (GT-MHR) is the result of coupling the evolution of a low power density passively safe modular reactor with key technology …

An MHR (Modular Helium Reactor) can cool down by itself under any accident conditions even if active shutdown cooling systems are inoperative. The purpose of the study is to develop a numerical ...

A schematic diagram of the combined Gas Turbine-Modular Helium Reactor/Organic Rankine Cycle (GT-MHR/ORC) with a capacity of 299 MW electrical power is shown in Fig. 1.The helium is heated in the reactor core to a temperature of around 850 °C, by flowing downward through coolant channels in graphite fuel elements.

With this paper, it is demonstrated that with modular helium cooled reactors using spherical fuel elements; it is possible to increase the efficiency of the reactor cycle with a safer nuclear process control. In addition, it is also demonstrated that parallel to electricity production, conversion of methane to hydrogen will be carried out ...

The GT-MHR (Gas Turbine Modular Helium Reactor), being developed by General Atomic (GA), couples a HTGR contained in one pressure vessel with a high efficiency Brayton cycle gas turbine system in ...

The Gas Turbine-Modular Helium Reactor (GT-MHR) is a new turbine generating system powered by a passiVely-safe nuclear reactor. It eliminates the need to make steam to produce electricity, and frees us from the pollution and waste" of fossil-fuel generating plants. It could also help to

@article{osti_885771, title = {Deep-Burn Modular Helium Reactor Fuel Development Plan}, author = {McEachern, D}, abstractNote = {This document contains the workscope, schedule and cost for the technology development tasks needed to satisfy the fuel and fission product transport Design Data Needs (DDNs) for the Gas Turbine …

The high-temperature gas-cooled reactor (HTGR), which based on the closed Brayton cycle with helium as the working fluid, is one of the most promising fourth-generation nuclear reactors ( Zhang and Yu, 2002, Muto et al., 1998, Crommelin, 2004 ). The turbine inlet temperature can be increased up to 900 °C with a direct helium cycle, …

For electricity and hydrogen production, an advanced reactor technology receiving considerable international interest is a modular, passively-safe version of the high …

The Gas Turbine - Modular Helium Reactor (GT-MHR) couples a high temperature gas cooled reactor (HTGR) with a Brayton power conversion cycle to produce electricity at high efficiency. Because of its capability to produce high coolant outlet temperatures (at least 850 deg. C with potential for still higher temperature), the modular …

Therefore Modular Helium Reactor (MHR), one of these HTR designs is a strong candidate for the thermochemical splitting of water into hydrogen and oxygen, which operate within the 750–1000 °C range [14], [15], [16]. There are popular simplified computational models to analyze analytically prismatic reactors.

The Gas Turbine – Modular Helium Reactor (GT-MHR) is an advanced nuclear power system that offers unparalleled safety, high thermal efficiency, environmental advantages, and competitive electricity generation costs. The GT-MHR module couples a gas-cooled modular helium reactor (MHR) with a high efficiency modular Brayton cycle gas …

The Gas Turbine-Modular Helium Reactor (GT-MHR) is the result of coupling the evolution of a low power density passively safe modular reactor with key technology developments in the U.S. during the last decade: large industrial gas turbines; large active magnetic bearings; and compact, highly effective plate-fin heat exchangers.

The primary overall objective of the project was to develop and document a conceptual design for the Steam Cycle Modular Helium Reactor (SC-MHR), which is the reactor concept proposed by General Atomics for the NGNP Demonstration Plant. The report summarizes the project activities over the entire funding period, compares the …

Small Modular Reactors (SMRs) The IAEA defines SMRs as advanced nuclear reactors that have a power capacity of up to 300 MW(e) per unit, which is about one …

The Modular Helium Reactor (MHR) is a strong candidate for VHTR design. It is suitable to adapt MHR operating conditions to VHTR operating conditions. An increased coolant outlet temperature directly drives an increase in the peak fuel temperature. One of the biggest concerns in the improvement of the VHTR is an undesirable peak fuel ...

The Gas Turbine-Modular Helium Reactor (GT-MHR) is the result of coupling the evolution of a low power density passively safe modular reactor with key technology developments in the U.S. during the last decade: large industrial gas turbines; large active magnetic bearings; and compact, highly effective plate-fin heat exchangers.

The Gas Turbine – Modular Helium Reactor (GT-MHR) is an advanced nuclear power system that offers unparalleled safety, high thermal efficiency, environmental …

their Modular Helium cooled Reactor (MHR) design to transmute transuranium isotopes (TRU) extracted from the fuel discharged from Light Water Reactors (LWR), and to search for improvement possibilities. The specific design we were to evaluate is also referred to as the "Deep Burn" MHR or DB-MHR. Following are specific objectives

The Gas Turbine – Modular Helium Reactor (GT MHR) is an advanced gas-cooled reactor currently under development in a joint United States – Russian Federation …

A Gas Turbine-Modular Helium Reactor (GT-MHR) is a 600 MW t helium cooled high temperature reactor with increased efficiency (up to 47% [14]), which is designed to operate with different kinds of fuels.Each reactor module is composed of two parts. First part is the reactor, where the nuclear fission takes place and helium is …

The gas turbine modular helium reactor GT-MHR is one of fourth generation reactors studied in the world. It is a graphite-moderated helium-cooled reactor designed in the United States during the ...

The Gas Turbine Modular Helium Reactor (GT-MHR) can effectively destroy surplus weapons grade plutonium, consuming more than 90% of the initially charged …

General Atomics Electromagnetic Systems (GA-EMS) is developing a 50 MWe helium-cooled Fast Modular Reactor (FMR) [1]. The project has been selected by the U.S. Department of Energy (DOE) for Advanced Reactor Concepts-20 (ARC-20) under Advanced Reactor Demonstration Program (ARDP). The long-term goal is to design, …