Much of the information presented here derives from the earlier molten salt reactor program and a significant advantage of fluoride salts, as high temperature heat transport media is their consequent relative technological maturity. 0000145565 00000 n %PDF-1.4 %���� 351 0 obj <>/Filter/FlateDecode/ID[<14331D95C7F6C4F20440C93CB05D3FEA><0D29F507B66ADD4C8E54E29DE468CB04>]/Index[336 27]/Info 335 0 R/Length 78/Prev 197262/Root 337 0 R/Size 363/Type/XRef/W[1 2 1]>>stream Superficially, fluoride salts at {approx}700 C resemble water at room temperature being optically transparent and having similar heat capacity, roughly three times the viscosity, and about twice the density. xref Loop operational issues such as start-up procedures and system freeze-up vulnerability are also discussed. H�tUMS�0��W�Q��B�%�b�!�JB&V��C�$1������Xki���۷�k ���߽��g�]h]d��#�Hp�-���(R����M�#����&�D�. Development of a mechanistic source term approach for liquid-fueled Molten Salt Reactors, Demonstration of MSR salt property database operation with a reactor analysis tool, Multi-Physics Simulations for Molten Salt Reactor Evaluation: Chemistry Modeling and Database Development, An Overview of Liquid Fluoride Salt Heat Transport Systems, Proposed guidance for preparing and reviewing a molten salt non-power production or utilization facility application. Standard Review Plan for the Review of Safety Analysis Reports for Nuclear Power Plants; Light Water Reactor (LWR) Edition. A compilation of relevant thermophysical properties of useful fluoride salts is also included for salt heat transport systems. 0000001893 00000 n H�dUMo�8��W�(������C���{Pl͌G2$9���_R�3��4-�Ga���q���C�zq�Y��$]f�~��,ċ��٨���C��!̿�=$[�� 336 0 obj <> endobj In order to design large production facilities, accurate physical and thermodynamic properties of molten salts must be known. Useful risk analyses tools currently in use for developing MSR source term analyses are also summarized, such as those developed for the European Safety Assessment of the Molten Salt, Successful modeling and simulation of molten salt reactors (MSRs) requires quality thermodynamic and thermophysical data for the working fluid. ���H�I���;Q��eq�hј��U.Ꚑ 4������S�tR5 �?I)�U'�2�c��'�On���� Q������ة�C���S|^�����"y� +3�@������3�&?���{�vX¹GsIN.����ǁ��]%E�xG����u囙kuP�Iɕ�Y#*��J2���5�`pE��ߗ�g.E͖��-�Xߧ��5����b_���{tb�'XKP[�y������莝 xr���UBj �#^��旇�Ru�I߲ؓ�Pґ�N�6FBi��3J;��dR�1v��%���O�2�K ��j8�N�?�bĖ�l�h�TX�q.ƿ =�-ڳiuo�� ���/?v����T_�r_!��Gl�'�3Ӎ�o�$�iFR�O��U�"�w���~�o_�����3���п����,�jE �V�"���P]���+�Jcv�a�B0!��d�|��f~g���Z������y�)s�^d��N�H���X�ƃ��dN�(�s�S�Q�ˁ&%���m%�3�R�ɂ[��(�#��x�vO�p�Iq8�%Rbz��. These challenges are being addressed through a collaboration among Oak Ridge National Laboratory, Argonne National Laboratory, the University of South Carolina, and the University of Ontario Institute of Technology. This discrepancy eventually led to the 2012 development of interim staff guidance (ISG) for NUREG-1537, which includes criteria for describing and reviewing aqueous homogeneous reactors (AHRs). ORNL staff, with support from Boston Government Services, LLC, focused on five system-related chapters in NUREG-1537 that were considered most relevant to inform the effort that would be required for a non-power MSR applicant. Specifically, NUREG-1537 ISG, 2012 expanded the original document to address three areas: 1. updated criteria for heterogeneous non-power reactors, 2. criteria for licensing AHRs, and 3. criteria for licensing a Part 50-licensed isotope production facility. The ever increasing demand for higher thermal efficiency necessitates power generation cycles transitioning to progressively higher temperatures. Despite the availability of some high quality MSR-relevant data-sets, there remains a need for a thermophysical properties experimental program to generate data focused on addressing the design and licensing needs of current MSR concept developers. Heat transport is central to all thermal-based forms of electricity generation. A goal of the Molten Salt Reactor Campaign is to develop a quality-controlled database of these properties that will be available for a multitude of different salt types. Multi-component molten salt mixtures formulated from the nitrates of sodium, potassium, lithium and calcium display liquidus temperatures below 100°C and, as such, have potential ... optimize fluid properties, among which viscosity is an important determinant of system efficiency. Key words: Molten salt storage tank design, molten salt technology, molten salt properties, molten salt costs, solar energy storage, nuclear energy storage. Chemical and Fuel Technologies Div. 0 Molten salts are being employed throughout the world as heat transfer fluids and phase change materials for concentrated solar power (CSP) production and storage.