pyroprocessing systems

This chapter provides an overview of the processes involved with two major reprocessing technologies, PUREX and pyroprocessing. Technology of nuclear waste transmutation as a way to render nuclear waste less hazardous is also discussed. ... In this system, both fast and thermal neutrons are utilized in different annular zones: an …

This will be done by developing and creating a training program that will sufficiently train the participants by conducting a pyroprocessing training with necessary theoretical presentations to acquaint the personnel with the technology and procedures for operating pyroprocessing systems, including preheater, calciner, kiln, and clinker cooler.

And that is the reason why. are the most important factors in the success of thyssenkrupp Polysius clinker manufacturing systems. While meeting the range of requirements imposed on the burning system, the plant supplier has the crucial task of optimising the overall pyroprocessing concept by combining high-performance individual machines.

Thermodynamic modeling of the molten salt systems is critical in the design of advanced nuclear power plants, materials recycling, and many other important clean energy applications. As one of the most capable computational thermodynamic approaches, the CALPHAD (Calculation of Phase Diagrams) method has been widely used for …

The Pyroprocessing Files. The article by Ralph Vartabedian in the Los Angeles Times highlights the failure of the Department of Energy's decades-long effort to chemically process a stockpile of spent nuclear fuel at Idaho National Laboratory, ostensibly to convert the waste to forms that would be safer for disposal in a geologic repository.

Several fundamental differences between the nature of aqueous reprocessing flow sheets and those proposed in pyroprocessing present substantial challenges to deploying current techniques developed for aqueous flow sheets directly to pyroprocessing systems. Briefly, pyroprocessing is a batch process, while PUREX is …

As the input feed to the system increases, a greater contribution of energy and exergy entering the system is spent on clinker formation, resulting in less energy and exergy being wasted from the system; thus, first and second law efficiencies increase. Although, the efficiency of the system improves by increasing the feed rate, the free lime ...

The key technology of pyroprocessing is the electrorefining process, where the materials are electrochemically transported from anode to the cathode through the electrolyte. Modeling can be a promising method to optimize system design, predict the separation efficiency, and monitor the operations.

Russian pyroprocessing consists of three main stages: dissolution of the used nuclear fuel in molten salts, precipitation of plutonium dioxide or electrolytic deposition of uranium and plutonium dioxides from the melt, then processing the material deposited on the cathode or precipitated at the bottom of the melt for granulated fuel production.

The key step of the pyroprocessing is the electrorefining of uranium in LiCl-KCl molten salt. ... is a system that consists of a fast-spectrum nuclear reactor that uses metallic fuel and liquid ...

Safeguarding advanced systems requires a different approach, therefore, the concept of integrating safeguards, safety, and security with facility design; i.e., safeguardability or safeguards- and security-by-design, is critical in order to deploy a commercial advanced system using pyroprocessing technologies in a practical …

An Overview of the Formation of SOx and NOx in Various Pyroprocessing Systems. ID: 2257. ESCSI: 9100.014. Author: Euston, Charles R.; Peter Bechtoft Nelson; Ove Lars Jepsen. Publication Name: Emerging Technologies in Resource Recovery and Emission Reduction in the Cement Industry. Type of Publication: Paper. Publisher: Portland …

A compact, efficient method for recycling IFR fuel is being developed. This method, known as pyroprocessing, capitalizes on the use of metal fuel in the IFR and provides separation of actinide elements from fission products by means of an electrorefining step. The process of electrorefining is based on well-understood …

The Nuclear Science and Engineering Division advances the design and operation of nuclear energy systems and applies nuclear energy-related expertise to current and emerging programs of national and international significance. The Nuclear Science & Engineering ( NSE) Division participates in key U.S. Department of Energy ( DOE) …

monitoring the mass of liquid salt in molten salt systems, the gamma spectroscopy data of salt samples from the pyroprocessing facilities in Idaho National Laboratory were acquired and analyzed. The primary focus is the uncertainty analysis of the gamma radioactivity of 154Eu isotope in the molten salts.

Abstract. A compact, efficient method for recycling IFR fuel is being developed. This method, known as pyroprocessing, capitalizes on the use of metal fuel …

Pyroprocessing of spent nuclear fuels uses the LiCl–KCl molten salt as an electrolyte, which contains dissolved fission products and can be very corrosive to the structural alloys.

Pyroprocessing has been explored for metal fuel cycle and nitride fuel cycle in Japan. Metal fuel fast reactor, which can achieve a high breeding ratio over 1.3, and its fuel cycle is a compact system by integrating pyroprocessing. Oxide fuel can be also treated by converting to metals by reduction. Separation of transuranium elements from …

PRIDE is an integrated pyroprocessing system with unit reactor of 50 kgHM/batch capacity. It will use depleted uranium with surrogate materials to show integrated performance and scale-up issues of full-spectrum pyroprocessing technology. PRIDE is a three-story building and it has a large-scale argon atmosphere cell (40.3 m …

The heart of the portland cement manufacturing process is the pyroprocessing system. This system transforms the raw mix into clinkers, which are gray, glass-hard, spherically shaped nodules that range from 0.32 to 5.1 centimeters (cm) (0.125 to 2.0 inches [in.]) in diameter.

The key technology of pyroprocessing is the electrorefining process, where the materials are electrochemically transported from anode to the cathode through the …

This project addresses the problem of achieving accurate material control and accountability (MC&A) around pyroprocessing electrorefiner systems. Spent nuclear fuel pyroprocessing poses a unique challenge with respect to reprocessing technology in that the fuel is never fully dissolved in the process fluid. In this case, the process fluid is ...

Abstract. At the end of May 2007, 830 and 2600 kilograms of EBR-II driver and blanket metal fuel have been treated by a pyroprocess since spent fuel operations began in June 1996. A new metal waste furnace has completed out-of-cell testing and is being installed in the Hot Fuel Examination Facility. Also, ceramic waste process …

drive system with planetary gear unit, the splined kiln tyre, the inlet and outlet seals, the air-cooled inlet trough, and the hydraulic axial thrust system. However, the drive system with self-aligning pinion and the floating tyre (as a more favourably priced alternative to the splined tyre) are specific features of the 3-support kiln.

Introduction. The Molten Salt Thermal Properties Database - Thermochemical (MSTDB-TC) [1], [2] effort seeks to provide useful thermodynamic models within a convenient database for global equilibrium applications relevant to molten salt reactor (MSR) coolant and fuel systems [3] and also to pyroprocessing [4], and the use of …

What we do. We focus on innovative, commercially viable electrochemical processes for the back end of the nuclear fuel cycle. We can efficiently recover actinides to recycle into fresh fuel, immobilize waste in durable waste forms, and model the long-term performance of waste forms in possible disposal facilities. We recently designed highly ...

At the heart of the Portland Cement manufacturing process is the pyroprocessing system. This system transforms the raw mix into clinkers, which are grey, glass-hard, spherically shaped nodules that …

Reuse of ER salt would, thus, greatly reduce the volume of ceramic waste produced during the pyroprocessing of spent nuclear fuel. This final portion of the joint I-NERI research project is to demonstrate the separation of fission products from molten ER salt by two methods previously selected during phase more » two (FY-08) of this project.

The ultimate goal is to demonstrate the viability of pyroprocessing as a practical solution to used fuel management. 1.2 Historical Background The conceptual design under this CRADA project was based on work …