In-situ, time resolved monitoring of uranium in BFS:OPC grout. Part 1:: Corrosion in water vapour

Milly Stitt; Haris Paraskevoulakos; Antonis Banos; Nicholas Harker; Keith Hallam; Alison Davenport; Steven Street; Tom Scott

doi:10.1038/s41598-017-08601-x

In-situ, time resolved monitoring of uranium in BFS:OPC grout. Part 1: Corrosion in water vapour

Milly Stitt
, Haris Paraskevoulakos
, Antonis Banos
, Nicholas Harker
, Keith Hallam
, Alison Davenport
, Steven Street
, Tom Scott

Research output: Contribution to journal › Article (Academic Journal) › peer-review

12 Citations (Scopus)

410 Downloads (Pure)

Abstract

Uranium encapsulated in grout was exposed to water vapour for extended periods of time. Through synchrotron x-ray powder diffraction and tomography measurements, uranium dioxide was determined the dominant corrosion product over a 50-week time period. The oxide growth rate initiated rapidly, with rates comparable to the U + H2O reaction. Over time, the reaction rate decreased and eventually plateaued to a rate similar to the U + H2O + O2 reaction. This behaviour was not attributed to oxygen ingress, but instead the decreasing permeability of the grout, limiting oxidising species access to the metal surface

Original language	English
Article number	7999
Number of pages	9
Journal	Scientific Reports
Volume	7
DOIs	https://doi.org/10.1038/s41598-017-08601-x
Publication status	Published - 11 Aug 2017

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title = "In-situ, time resolved monitoring of uranium in BFS:OPC grout. Part 1:: Corrosion in water vapour",

abstract = "Uranium encapsulated in grout was exposed to water vapour for extended periods of time. Through synchrotron x-ray powder diffraction and tomography measurements, uranium dioxide was determined the dominant corrosion product over a 50-week time period. The oxide growth rate initiated rapidly, with rates comparable to the U + H2O reaction. Over time, the reaction rate decreased and eventually plateaued to a rate similar to the U + H2O + O2 reaction. This behaviour was not attributed to oxygen ingress, but instead the decreasing permeability of the grout, limiting oxidising species access to the metal surface ",

author = "Milly Stitt and Haris Paraskevoulakos and Antonis Banos and Nicholas Harker and Keith Hallam and Alison Davenport and Steven Street and Tom Scott",

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AU - Stitt, Milly

AU - Paraskevoulakos, Haris

AU - Banos, Antonis

AU - Harker, Nicholas

AU - Hallam, Keith

AU - Davenport, Alison

AU - Street, Steven

AU - Scott, Tom

PY - 2017/8/11

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N2 - Uranium encapsulated in grout was exposed to water vapour for extended periods of time. Through synchrotron x-ray powder diffraction and tomography measurements, uranium dioxide was determined the dominant corrosion product over a 50-week time period. The oxide growth rate initiated rapidly, with rates comparable to the U + H2O reaction. Over time, the reaction rate decreased and eventually plateaued to a rate similar to the U + H2O + O2 reaction. This behaviour was not attributed to oxygen ingress, but instead the decreasing permeability of the grout, limiting oxidising species access to the metal surface

AB - Uranium encapsulated in grout was exposed to water vapour for extended periods of time. Through synchrotron x-ray powder diffraction and tomography measurements, uranium dioxide was determined the dominant corrosion product over a 50-week time period. The oxide growth rate initiated rapidly, with rates comparable to the U + H2O reaction. Over time, the reaction rate decreased and eventually plateaued to a rate similar to the U + H2O + O2 reaction. This behaviour was not attributed to oxygen ingress, but instead the decreasing permeability of the grout, limiting oxidising species access to the metal surface

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DO - 10.1038/s41598-017-08601-x

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JO - Scientific Reports

JF - Scientific Reports

M1 - 7999

ER -

In-situ, time resolved monitoring of uranium in BFS:OPC grout. Part 1: Corrosion in water vapour

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