Cesium and Strontium Contamination of Nuclear Plant Stainless Steel : Implications for Decommissioning and Waste Minimization

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dc.contributor.author Lang, Adam R.
dc.contributor.author Engelberg, Dirk L.
dc.contributor.author Walther, Clemens
dc.contributor.author Weiss, Martin
dc.contributor.author Bosco, Hauke
dc.contributor.author Jenkins, Alex
dc.contributor.author Livens, Francis R.
dc.contributor.author Law, Gareth T. W.
dc.date.accessioned 2019-09-20T12:22:02Z
dc.date.available 2019-09-20T12:22:02Z
dc.date.issued 2019-09-10
dc.identifier.citation Lang , A R , Engelberg , D L , Walther , C , Weiss , M , Bosco , H , Jenkins , A , Livens , F R & Law , G T W 2019 , ' Cesium and Strontium Contamination of Nuclear Plant Stainless Steel : Implications for Decommissioning and Waste Minimization ' , ACS Omega , vol. 4 , no. 11 , pp. 14420-14429 . https://doi.org/10.1021/acsomega.9b01311
dc.identifier.other PURE: 126351608
dc.identifier.other PURE UUID: d92c91fc-727d-47d2-af80-2adbe2b3b123
dc.identifier.other ORCID: /0000-0002-2320-6330/work/61901782
dc.identifier.other WOS: 000486396500008
dc.identifier.uri http://hdl.handle.net/10138/305541
dc.description.abstract Stainless steels can become contaminated with radionuclides at nuclear sites. Their disposal as radioactive waste would be costly. If the nature of steel contamination could be understood, effective decontamination strategies could be designed and implemented during nuclear site decommissioning in an effort to release the steels from regulatory control. Here, batch uptake experiments have been used to understand Sr and Cs (fission product radionuclides) uptake onto AISI Type 304 stainless steel under conditions representative of spent nuclear fuel storage (alkaline ponds) and PUREX nuclear fuel reprocessing (HNO3). Solution (ICP-MS) and surface measurements (GD-OES depth profiling, TOF-SIMS, and XPS) and kinetic modeling of Sr and Cs removal from solution were used to characterize their uptake onto the steel and define the chemical composition and structure of the passive layer formed on the steel surfaces. Under passivating conditions (when the steel was exposed to solutions representative of alkaline ponds and 3 and 6 M HNO3), Sr and Cs were maintained at the steel surface by sorption/selective incorporation into the Cr-rich passive film. In 12 M HNO3, corrosion and severe intergranular attack led to Sr diffusion into the passive layer and steel bulk. In HNO3, Sr and Cs accumulation was also commensurate with corrosion product (Fe and Cr) readsorption, and in the 12 M HNO3 system, XPS documented the presence of Sr and Cs chromates. en
dc.format.extent 10
dc.language.iso eng
dc.relation.ispartof ACS Omega
dc.rights cc_by
dc.rights.uri info:eu-repo/semantics/openAccess
dc.subject ACCUMULATION
dc.subject ADSORPTION
dc.subject CORROSION BEHAVIOR
dc.subject DECONTAMINATION
dc.subject PRODUCTS
dc.subject SORPTION
dc.subject SPECTROSCOPY
dc.subject SURFACES
dc.subject TEMPERATURE
dc.subject X-RAY PHOTOELECTRON
dc.subject 116 Chemical sciences
dc.title Cesium and Strontium Contamination of Nuclear Plant Stainless Steel : Implications for Decommissioning and Waste Minimization en
dc.type Article
dc.contributor.organization Department of Chemistry
dc.description.reviewstatus Peer reviewed
dc.relation.doi https://doi.org/10.1021/acsomega.9b01311
dc.relation.issn 2470-1343
dc.rights.accesslevel openAccess
dc.type.version publishedVersion

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