The influence of metal substrate on CRUD build-up under simulated PWR conditions

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Abstract

CRUD deposition tests were carried out on several micro-orifice specimens in a Hastelloy C-276 and a SS 316L flow loop. The results showed that irrespective of the material used for the construction of the discs (SS 304L, Titanium, Alloy 690, Zirlo and Magnesia stabilised Zirconia) no significant differences in term of radial CRUD build-up were observed. The effect of the Ni and Fe cations dissolved in the water was also investigated; the results revealed that CRUD build-up rate increased with the ferrous ions concentration and decreased with nickel ions. Finally, SEM and Energy Dispersive X-Ray Spectroscopy were used to characterise the oxide morphology showing higher particulate build-up for the specimens tested in the Hastelloy autoclave.

Bibliographical metadata

Original languageEnglish
Title of host publication19th International Conference on Environmental Degradation of Materials in Nuclear Power Systems- Water Reactor conference
Publication statusAccepted/In press - 1 Jul 2019
Event19th International Conference on Environmental Degradation of Materials in Nuclear Power Systems - Water Reactors - Boston, United States
Event duration: 18 Aug 201922 Aug 2019
http://envdeg.ans.org/

Conference

Conference19th International Conference on Environmental Degradation of Materials in Nuclear Power Systems - Water Reactors
CountryUnited States
CityBoston
Period18/08/1922/08/19
Internet address

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