corium

plural coriums · plural coria

1. anatomyThe layer of skin between the epidermis and the subcutaneous tissues.

   Synonyms: cutis, dermis

2. anatomyThe deep layer of mucous membranes beneath the epithelium.
3. historicalArmour made of leather, particularly that used by the Romans.

   Passing by the Corium Bubulum of the Classical Ancients, we see in an old charter, dated 1036, "Stallus Sutoris Vaccæ," i. e. the stall of a shoe-maker who used cow-skin.

   1825, Thomas Dudley Fosbroke, Encyclopaedia of antiquities, and elements of archaeology, classical and mediæval

1. uncountablenuclear physicsA lavalike mixture of fissile material created in a nuclear reactor's core during a nuclear meltdown.

   CORIUM: INIS: 1977-10-17; ETDE: 1977-06-02 Molten mixture of fuel, cladding and other core structural material resulting from a meltdown accident.

   2019 October, INIS [International Nuclear Information System] Thesaurus, Multilingual version, IAEA-INIS Reference Series IAEA-INIS-01 (2019/10), Vienna: IAEA [International Atomic Energy Agency], →ISSN, page 264

   3 more examples

   Mexico was given $100,000 to do a series of experiments in which small amounts (10 to 20 grams) of stainless steel and corium (a mixture of 55 percent iron, 10 percent zirconium, and 35 percent uranium dioxide) will be melted and then flooded with water in an arc-melting chamber.

   1975 21 October, Hearings on the Nuclear Initiative: Technological Concerns in Nuclear Reactor Safety, Sacramento (CA): California Legislature Assembly Committee on Resources, Land Use, and Energy

   Previous studies of the thermal behavior of corium in a degraded nuclear reactor have focussed primarily on the process of heat transfer within the corium.

   1991, Sheau-Wen Shiah, Fan-bill B. Cheung, Dae-Ho Cho, Michael J. Tan, Louis Baker Jr., “Numerical Modeling of Corium/Steel Structure Interaction with Downfacing Boiling Boundary Conditions”, in Chung, Franklin, Hochreiter, Larry E., editors, Numerical Modelling of Basic Heat Transfer Phenomena in Nuclear Systems, presented at the 28th National Heat Transfer Conference, Minneapolis, Minnesota, July 28-31, 1991, New York (NY): American Society of Mechanical Engineers, page 31

   The materials of the nuclear reactor—nuclear oxide fuel and fission products, cladding, metallic alloys, moderator, absorbers, structural materials, coolants, concrete, and so on, could melt to form complex, multiphases, and aggressive mixtures known by the general term corium.

   2011, Pascal Piluso, “Appendix 1: Corium Thermodynamics and Thermophysics, 2. Corium Thermophysics”, in Bal Raj Seghal, editor, Nuclear Safety in Light Water Reactors: Severe Accident Phenomenology, Waltham (MA): Academic Press, →ISBN, page 664