The Emission and Mobilization of Mo from Overheated Nuclear Fuel - the Importance of 'Maturation' of the Aerosols

Tinant, V.; Froment, Pascal; Cara, Jean; Ronneau, Claude

doi:10.1524/ract.1997.79.1.51

Cited by 7 publications

(2 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Condensation particles are generated by a graphite oven from a modified atomic absorption spectrometer which allows to heat UO 2 (+ RuO x ) or pure RuO x pellets up to temperatures of about 2300 • C in an inert atmosphere and up to 1600 • C in an oxidizing atmosphere. In this latter case, the pellets are put into a quartz tube inserted into the graphite oven and temperature limitation is due to quartz softening [5]. Fig.…”

Section: The Preparation Of Uo 2 ( + Ruo X ) Pelletsmentioning

confidence: 99%

See 1 more Smart Citation

Study of Ru released under accidental conditions by overheated nuclear fuel: the emission of Ru and U

Froment¹,

Cara²,

Vanbegin³

et al. 2001

Radiochimica Acta

Self Cite

View full text Add to dashboard Cite

The emission of uranium and ruthenium oxides from overheated nuclear fuel is a complex phenomenon which depends on the fuel matrix, on temperature, on the oxygen potential of the amosphere in contact and on the emission sequence. All these factors influence the properties of particles before their dispersion in the reactor containment building and in the environment: these properties are, among others, surface composition, particle size, and, as a consequence, weathering rates in the environment. Emission in air increases the solubility of U-oxides mainly. This first paper describes the main physico-chemical characteristics of condensation particles released by overheated U and Ru oxides mixtures, in small-scale laboratory simulations.

show abstract

Section: The Preparation Of Uo 2 ( + Ruo X ) Pelletsmentioning

confidence: 99%

“…Interactions take place in the overheated nuclear fuel during the emission stage and, at intermediate temperatures, in the plume of fumes emitted by the reactor. It has already been demonstrated that this is a key step for determining the final physico-chemical state of the radionuclides [5].…”

Section: Introductionmentioning

confidence: 99%