Ansys engineering simulation for reactor design including cfd for chemical reactor design, structural and thermal analysis and instrumentation and control software used for design and analysis of chemical reactors enable reaction engineers to answer whatif questions as they design and enhance reactors performance, energy usage, reactor yield. Qualifying software for nuclearsafetyrelated calculations oak ridge national laboratory and comsol, inc. Research reactors are nuclear reactors used for research, development, education and training. The team members are outstanding to work with, very experienced and talented group of people.
The high flux isotope reactor hfir cold source project at. In addition to the higher flux levels achieved by the design of heir there are other factors that reduce fiwf flux levels with respect to hfir. Robert knudson high flux isotope reactor instrument data. Engineers aide sinet fluid flow analysis, equipment sizing and. Department of energy s global threat reduction initiative gtrireduced enrichment for research and test reactors rertr program. Gas flex a process gas compressor program utilizing bwr equations of state. The service handler then demultiplexes the incoming requests and dispatches them synchronously to the associated request handlers. Safe and effective generation of neutron sources requires extensive analysis of neutron scattering and neutron transport.
Neutrons play a vital role in many areas of science and technology, from nondistructive testing of materials, to medical isotopes. New projects spurred need for developing a model to current doe software standards. Advanced multiphysics thermalhydraulics models for the high flux isotope reactor prashant k. Prospect, located at the high flux isotope reactor hfir at the department of energys oak ridge national laboratory ornl, has begun taking data to.
High flux isotope reactor technical parameters neutron. Ensuring the safe design of research reactors and conducting regular safety assessments are fundamental to make sure they operate under adequate conditions and to prevent accidents. Chemcad safety net plant safety and piping networks software. High flux isotope reactor downloadable data neutron science at. The proactor pattern can be considered to be an asynchronous variant of the synchronous reactor pattern. The reactor instrumentation and control system design reflects the emphasis. Size reactors either alone or in series once given the molar flow rate of a, and the rate of reaction, r a, as a function of conversion, x. The reactor instrumentation and control system design reflects the emphasis placed on. Dec 11, 2016 design reactor is notoriously frugal with their finances.
The salary you receive most likely is the salary youre stuck with as long as youre employed there. Hfir is a berylliumreflected, lightwatercooled and moderated, fluxtrap type. History at culham implies that it is possible to design software for 30 years of development. Engineering design studies to determine the feasibility of converting the high flux isotope reactor hfir from using highly enriched uranium heu to lowenriched uranium leu fuel are ongoing at oak ridge national laboratory ornl. Advanced multiphysics thermalhydraulics models for the. The high flux isotope reactor hfir stanford university. In fact, the design of the hfir reactor was originally optimized for producing transplutonium isotopes. Comsol multiphysics, relap5, ansys, mcnp5, origens and vesta. Maureen searles is first certified female hfir nuclear. Multiphysics simulations transmuting designs for safer.
The high flux isotope reactor hfir was constructed in the mid1960s to. Reactor vessel support skirt concerns by dean wilkie this paper is also available as a pdf the support skirt area at the bottom of the fukushima bwr reactor vessel is a point of interest and study which is being performed by the team. Pdf modeling of the high flux isotope reactor cycle 400. Maureen searles is the first certified female nuclear reactor controller in the history of the high flux isotope reactor. This program also aided russian researchers in the discovery, and now.
Prospect, the precision oscillation and spectrum experiment, located at the high flux isotope reactor hfir at ornl will measure the antineutrinos from a research reactor at a distance of less than 10m to address recent anomalies observed in both the flux and spectral shape. The floor below contains multiple neutron beamlines and scattering experiments. A few key parameters of hfir are presented in table 1. Design and simulation of the cg1 beamline at hfir springerlink. High flux isotope reactor core assembly neutron science. Hfir is the highest flux reactorbased source of neutrons for research in the united states. The high flux isotope reactor hfir was constructed in the mid1960s to fulfill a need for the production of transuranic isotopes i. In a batch reactor, the reagents are added together and. Since then its mission has grown to include materials irradiation, neutron activation, and, most recently, neutron scattering. The types of reactors that can be modeled include batch reactors, continuous stirred tank reactors, plug flow reactors, plug flow reactors with axial dispersion, and tubular flow reactors with radial dispersion.
At a steadystate neutron flux of 85 mw, it has become one of the most powerful 85 mw research reactors in the world 1. High flux isotope reactor technical parameters neutron science. For all irreversible reactions of greater than zero order, the volume of the reactor approaches. Reference axially graded low enriched uranium fuel design. This work is part of an effort sponsored by the us department of energy doe reactor conversion program. Kineticsreactor design learncheme educational resources. Authorization to proceed with the design of a highflux reactor was received in. An engineering design study of the conversion of the high flux isotope reactor hfir from highenriched uranium heu to lowenriched uranium leu fuel is ongoing at oak ridge national laboratory. Reactor design is a vital step in the overall design of a process. The system includes extensive libraries of biokinetic and dosimetric data and models representing the current state of the art.
Successful conversion of the hfir will preserve reactor performance, minimize negative effects on operation. Department of energys global threat reduction initiative gtrireduced enrichment for research and test reactors rertr program. A lowpower testing program was completed in january 1966, and operation cycles at 20, 50, 75, 90, and 100 mw began. Outlined the key modelling issues for design of fusion reactor core. In a batch reactor, the reagents are added together and allowed to react for a given amount of time.
The chemical reactor design tool crdt is a set of computer programs that solves the equations describing common chemical reactor models. The high flux isotope reactor hfir is a berylliumreflected, light water cooled, highly enriched uranium heufueled research reactor operating at 85 mwth at oak ridge national laboratory ornl. From modeling of the high flux isotope reactor cycle 400, ornltm2004251, august 2005 contains description of mcnp model and comparison to engineering drawings. The hfir facility is the united states highest flux reactorbased neutron source, and is a major neutron scattering user facility as well as the worlds leading. Operating at 85 mw, hfir is the highest flux reactorbased source of neutrons for research in the united states, and it provides one of the highest steadystate. Cutaway views of the hfir beryllium reflector and fuel element. High flux isotope reactor hfir is a us doe office of science user facility that provides one of the highest steadystate neutron fluxes of any research reactor in the world. The study will be limited to steadystate, nominal operation, reactor physics and thermalhydraulic analyses of a uraniummolybdenum alloy that would be substituted for the current fuel powderu3o8 mixed with aluminum. Engineering design studies of the feasibility of conversion of the high flux isotope reactor hfir from highenriched uranium heu to lowenriched uranium leu fuel are ongoing at oak ridge national laboratory ornl as part of an effort sponsored by the u. Batch and semibatch reactors batch reactor at constant volume. Advanced multiphysics thermalhydraulics models for the high. Reactor and nuclear systems division research highlights ornl.
Following the decision to cancel the advanced neutron source ans project at oak ridge national laboratory ornl, it was determined that a hydrogen cold source should be retrofitted into an existing beam tube of the high flux isotope reactor hfir at ornl the preliminary design of this system has been completed and an approval in principal of the design has been obtained from the. High flux isotope reactor core assembly neutron science at ornl. A model of the reactor for use with the monte carlo nparticle mcnp computer. High flux isotope reactor hfir neutron sciences oak ridge. The reactor design pattern is an event handling pattern for handling service requests delivered concurrently to a service handler by one or more inputs. The reactor core assembly is contained in a 244cmdiam steel pressure vessel located in a pool of water. Detector improvements upgrade science capabilities of sns. The prospect reactor antineutrino experiment sciencedirect. Continuing leu conversion activities at the high flux isotope.
Assumptions and criteria for performing a feasibility. Hfir is the highest flux reactor based source of neutrons for research in the united states. Design and safety assessment of research reactors iaea. The thermal and cold neutrons produced by hfir are used to study physics, chemistry, materials science, engineering, and biology. It burns highly enriched uranium fuel 235 u, and was designed primarily to support neutron scattering and radiation damage experiments, trace element detection, and the production of radioactive isotopes. Modeling and depletion simulations for a high flux isotope reactor. Ornl, tn, usa nuclearsafetyrelated sqa procedure automation. The reactor core assembly is contained in an 8ft 2. In fact, the design of the hfir reactor was originally optimized for. Following the decision to cancel the advanced neutron source ans project at oak ridge national laboratory ornl, it was determined that a hydrogen cold source should be retrofitted into an existing beam tube of the high flux isotope reactor hfir at ornl the preliminary design of this system has been completed and an approval in principal of the design has been obtained from the internal.
Each plate is 50 mils thick, and the shape of the reactor ensures constant cooling from the highspeed coolant. Hfir produces one of the highest neutron fluxes in the world despite its core being roughly 2 feet tall and 15 inches in diameter. With extensive experience in designing and operating neutron source facilities and pioneering work in related areas, ornl is well. High flux isotope reactor hfir spallation neutron source. High flux isotope reactor technical parameters hfir is a berylliumreflected, lightwatercooled and moderated, fluxtrap type reactor that uses highly enriched uranium235 as the fuel. The iaea assists member states with the construction, operation, utilization and fuel cycle of research reactors, as well as with capacitybuilding and infrastructure development. Design reactor is in the middle of a lot of changes, i only left because i got an opportunity i couldnt pass up.
Medical isotope production in the fast and the high flux. Modeling of the high flux isotope reactor cycle 400 design study for a. History of the high flux isotope reactor neutron science at ornl. The preliminary conceptual design of the reactor was based on the flux trap principle, in which the. Mcnp transport code programs and libraries are distributed separately and. Development of technical specifications corefuel, reactivity control and shutdown systems. Operating at 85 mw, hfir is the highest flux reactorbased source of neutrons for research in the united states, and it provides one of the highest steadystate neutron fluxes of any research reactor in the world. Continuing leu conversion activities at the high flux.
Significant components of the reactor are identified in fig. History of the high flux isotope reactor neutron science. The primary missions of this versatile beryllium reflected, lightwatercooled and moderated, fluxtrap type reactor include cold and thermal. Basic objectives in design of a reactor in chemical engineering physical operations such as fluid flow, heat transfer, mass transfer and separation processes play a very large part. Rings to simulate grading central target detail on following slides. Does not adversely affect key research programs that fund the reactor. It is important to ensure that the equipment specified will be capable of achieving the desired yields and selectivity. Reactor and nuclear systems division research highlights. The department of energys doe oak ridge national laboratory ornl high flux isotope reactor hfir is the highest flux reactorbased source of neutrons for condensedmatter research in the us. Hfir fuel design 4 reactor core assembly the reactor core assembly is contained in an 8ft 2. Bonaccorsi areva ta, aixenprovence cedex 3, france abstract in brief, the design aims to have a facility which is quickly operational and profitable, safe and able to.
A computational model of the high flux isotope reactor. Being certified has been one of the proudest moments of my career, said maureen, who recently celebrated her twoyear anniversary at hfir, but admits that a career in nuclear operations is a far cry from what she initially envisioned. The unique fuel and core design, as well as the high power density of the hfir, present a complex and challenging. As such, the safety of the system must be assessed to incorporate the changes in fuel properties and the subsequently modified fuel plate. Design of stirred batch reactor linkedin slideshare. The primary missions of this versatile beryllium reflected, lightwatercooled and moderated. High flux isotope reactor core assembly the reactor core assembly is contained in an 8ft 2. The following data are provided to allow potential users of hfir to perform analyses. Lead team of software engineers and electrical designers at the high flux isotope reactor hfir and the spallation neutron source sns support 247 operations. Wireless sensors for predictive maintenance of rotating. Take oak ridge national laboratory ornl, for instance. Aug 30, 2015 engineering design studies to determine the feasibility of converting the high flux isotope reactor hfir from using highly enriched uranium heu to lowenriched uranium leu fuel are ongoing at oak ridge national laboratory ornl.
The inner ring contains 171 fuel plates, while the outer ring contains 369 fuel plates. The high flux isotope reactor hfir hfir is a compact research reactor located at ornl, and is described in great detail elsewhere 18. Advanced multiphysics thermalhydraulics models for. Proactor is a software design pattern for event handling in which long running activities are running in an asynchronous part. The software runs on a pc under windows 98nt2000xp. Reference axially graded low enriched uranium fuel. Write the mole balances in terms of conversion for a batch reactor, cstr, pfr, and pbr.
Operating at 85 mw, hfir is the highest flux reactor based source of neutrons for research in the united states, and it provides one of the highest steadystate neutron fluxes of any research reactor in the world. The detector is installed in the hfir experiment room next to the water pool and 5 m above the hfir reactor core red. The high flux isotope reactor hfir cold source project. Need for software capable of continuous development. Improving nuclear reactor designs with simulation comsol blog. Rabbit housing design requirements for various experiment positions. A completion handler is called after the asynchronous part has terminated. High flux isotope reactor operating at 85 mw, hfir is the highest flux reactor based source of neutrons for research in the united states, and it provides one of the highest steadystate neutron fluxes of any research reactor in the world. What is bioreactor a bioreactor may refer to any manufactured or engineered device or system that supports a biologically active environment in one case, a bioreactor is a vessel in which a chemical process is carried out which involves organisms. The image on the right is a cutaway of the reactor which shows the pressure vessel, its location in the reactor pool, and some of the experiment facilities.
Sep 24, 2015 nuclear organizations across the world have used the softwares builtin features to analyze and design induction furnaces, electromagnetic pumps for liquid metal coolants, and rf cavities for accelerators, as well as for the nondestructive testing of reactor components. In the axial direction, the reactor is reflected by water. A precision reactor antineutrino oscillation and spectrum. Like the rest of the uss nuclear research reactors, oak ridge national labs ornl high flux isotope reactor hfir is moving from highenriched uranium heu fuel to lowenriched uranium leu. Conversion and reactor sizing define conversion and space time. Oak ridge national laboratory ornl is a leader in the development of nuclear modeling and simulation software and data, the application of customdeveloped and commercial tools to challenging applications scenarios, advanced validation approaches, experiment design, regulatory support, and training, especially in the following areas. They produce neutrons for use in industry, medicine, agriculture and forensics, among others. Safety analyses using software that meets doe requirements for sqa. The prospect detector began collecting data in 2018. Qualifying software for nuclearsafetyrelated calculations. Comsol simulations for steady state thermal hydraulics. The preliminary conceptual design of the reactor was based on the flux trap. Dcal maybe used either in an interactive mode or in a batch mode and is intended for experienced users with knowledge of computational dosimetry. Neutron scattering school neutron science graduate programs and course materials.
86 72 27 362 1023 171 382 69 614 728 36 1426 753 1517 563 986 1232 697 1117 502 940 431 1149 274 1108 1383 1060 333 1003 733 642 373 188 629 1351