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CHaracterization of PWR CRUD phases and their variation under plant operation by transmission electron microscopy
KTH, Skolan för informations- och kommunikationsteknik (ICT), Materialfysik (Stängd 20120101), Funktionella material, FNM (Stängd 20120101).
2009 (Engelska)Ingår i: 14th International Conference on Environmental Degradation of Materials in Nuclear Power Systems Water Reactors 2009, 2009, s. 1136-1147Konferensbidrag, Publicerat paper (Refereegranskat)
Abstract [en]

The solid particles suspended and circulated in PWR primary water may consist of fuel CRUD, solid corrosion products of water-contacting materials, additives and various impurities of reactor water. This paper demonstrates a new methodology by using transmission electron microscopy to characterize the phase compositions of CRUD particles and their variation under reactor operation. Several new CRUD phases have been imaged and confirmed by energy dispersive X-ray spectroscopy and selected area electron diffraction studies. The differences in CRUD phase composition between scraped fuel CRUD, CRUD from primary water in an event of elevated Co-58 activity or shutdown or H 2O 2 injection are reported and discussed with respect to the thermodynamic stability of some phases and possible chemical reactions involved.

Ort, förlag, år, upplaga, sidor
2009. s. 1136-1147
Nyckelord [en]
Corrosion products, Elevated CO, Energy dispersive X ray spectroscopy, Plant operations, Primary water, Selected area electron diffraction, Solid particles, Chemical stability, Degradation, Impurities, Nuclear energy, Phase composition, Plant shutdowns, Reactor operation, Thermodynamic stability, Transmission electron microscopy, X ray spectroscopy, Pressurized water reactors
Nationell ämneskategori
Fysik
Identifikatorer
URN: urn:nbn:se:kth:diva-152426Scopus ID: 2-s2.0-78649387591ISBN: 978-161738853-8 (tryckt)OAI: oai:DiVA.org:kth-152426DiVA, id: diva2:750442
Konferens
14th International Conference on Environmental Degradation of Materials in Nuclear Power Systems Water Reactors 2009, 23 August 2009 through 27 August 2009, Virginia Beach, VA, United States
Anmärkning

QC 20140929

Tillgänglig från: 2014-09-29 Skapad: 2014-09-26 Senast uppdaterad: 2014-09-29Bibliografiskt granskad

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Bergqvist, Hans
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Funktionella material, FNM (Stängd 20120101)
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