Peening narrow nozzles of reactor pressure vessels using ultrasonic cavitation
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Mechanical Science and Technology"
DOI: 10.1007/s12206-017-1021-4
Abstract: A peening approach using ultrasonic cavitation was proposed to peen the inner surfaces of narrow nozzles of reactor pressure vessels. The working theory for the present approach was described and numerically demonstrated. A proof-of-concept experiment… read more here.
Keywords: using ultrasonic; nozzles reactor; ultrasonic cavitation; narrow nozzles ... See more keywords
Radiation induced solute clustering in high-Ni reactor pressure vessel steel
Sign Up to like & getrecommendations! Published in 2019 at "Acta Materialia"
DOI: 10.1016/j.actamat.2019.08.028
Abstract: Abstract The thermal stability and the structure of solute-vacancy clusters formed by neutron irradiation are studied by means of positron annihilation spectroscopy and hardness measurements of post-irradiation annealed reactor pressure vessel steels with high and… read more here.
Keywords: pressure vessel; radiation induced; reactor pressure;
Precipitation in reactor pressure vessel steels under ion and neutron irradiation: On the role of segregated network dislocations
Sign Up to like & getrecommendations! Published in 2021 at "Acta Materialia"
DOI: 10.1016/j.actamat.2021.116922
Abstract: Abstract The ultrahigh density of Mn-Ni-Si-Cu precipitates that form in irradiated reactor pressure vessels (RPV) result in hardening and embrittlement, which may limit the service life of aging nuclear reactors. Here, we quantitatively analyze solute… read more here.
Keywords: network dislocations; reactor pressure; ion neutron; segregation ... See more keywords
Impact of shield elements on the WWER-440 reactor pressure vessel activation
Sign Up to like & getrecommendations! Published in 2019 at "Annals of Nuclear Energy"
DOI: 10.1016/j.anucene.2019.03.008
Abstract: Abstract The WWER-440 type nuclear reactor is one of the most common reactor types in the nuclear power plants (NPP) across Central and Eastern Europe. Most of the NPPs equipped with these reactors have reached… read more here.
Keywords: shield elements; reactor pressure; pressure vessel; wwer 440 ... See more keywords
Evolution of precipitation in reactor pressure vessel steel welds under neutron irradiation
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Nuclear Materials"
DOI: 10.1016/j.jnucmat.2017.03.019
Abstract: Reactor pressure vessel steel welds are affected by irradiation during operation. The irradiation results in nanometre cluster formation, which in turn affects the mechanical properties of the material, e.g. the ductile-to-brittle transition temperature is shifted… read more here.
Keywords: irradiation; pressure vessel; material; reactor pressure ... See more keywords
Modular system for probabilistic fracture mechanics analysis of embrittled reactor pressure vessels in the Grizzly code
Sign Up to like & getrecommendations! Published in 2019 at "Nuclear Engineering and Design"
DOI: 10.1016/j.nucengdes.2018.10.015
Abstract: Abstract In light water reactor (LWR) nuclear power plants, the reactor pressure vessel (RPV) plays an essential safety role, and its integrity must be ensured during a variety of transient loading conditions. These can include… read more here.
Keywords: reactor; grizzly code; reactor pressure; mechanics ... See more keywords
Nanoindentation of ion-irradiated reactor pressure vessel steels – model-based interpretation and comparison with neutron irradiation
Sign Up to like & getrecommendations! Published in 2018 at "Philosophical Magazine"
DOI: 10.1080/14786435.2018.1425007
Abstract: Abstract Ion-irradiation-induced hardening is investigated on six selected reactor pressure vessel (RPV) steels. The steels were irradiated with 5 MeV Fe2+ ions at fluences ranging from 0.01 to 1.0 displacements per atom (dpa) and the… read more here.
Keywords: ion; irradiation; pressure vessel; reactor pressure ... See more keywords
Fast Neutron Irradiation Optimization of Thorium-Fueled SCWR Reactor Pressure Vessel
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Nuclear Engineering and Radiation Science"
DOI: 10.1115/1.4046354
Abstract: Fast neutron irradiation causes embrittlement of the reactor pressure vessel (RPV) material; therefore, it may end operation life before design lifetime. Well-known method to recuperate crystal lattice dislocations is annealing. In the current version of… read more here.
Keywords: fast neutron; reactor pressure; pressure vessel; neutron irradiation ... See more keywords