Deposition of corrosion products under pressurised water nuclear reactor conditions: The effect of flow velocity and dissolved hydrogen

Stefano Cassineri; Jonathan Duff; Andrea Cioncolini; Michele Curioni; Andrew Banks; Fabio Scenini

doi:10.1016/j.corsci.2019.108113

Deposition of corrosion products under pressurised water nuclear reactor conditions: The effect of flow velocity and dissolved hydrogen

Stefano Cassineri, Jonathan Duff, Andrea Cioncolini, Michele Curioni, Andrew Banks, Fabio Scenini^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

14 Scopus citations

Abstract

The effect of water flow velocity and dissolved hydrogen on the deposition rate of Corrosion-Related Unidentified Deposit (CRUD) was investigated under conditions relevant to pressurised water nuclear reactors using type 304 l stainless steel micro-orifices. The results indicate that the CRUD build-up rate increases with hydrogen concentration because the amount of iron in solution also increases. At the same time, the fluid shear forces induce a mechanical removal of the oxide for flow velocities above 15 m/s. This suggests that the CRUD deposition process occurs under mass transport control, but the overall build-up rate is also affected by flow-induced mechanical removal.

Original language	English
Article number	108113
Journal	Corrosion Science
Volume	159
DOIs	https://doi.org/10.1016/j.corsci.2019.108113
State	Published - Oct 2019
Externally published	Yes

Keywords

Corrosion deposition
Micro-fluidic
Micro-orifice
PWR primary water
Stainless steel

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10.1016/j.corsci.2019.108113

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title = "Deposition of corrosion products under pressurised water nuclear reactor conditions: The effect of flow velocity and dissolved hydrogen",

abstract = "The effect of water flow velocity and dissolved hydrogen on the deposition rate of Corrosion-Related Unidentified Deposit (CRUD) was investigated under conditions relevant to pressurised water nuclear reactors using type 304 l stainless steel micro-orifices. The results indicate that the CRUD build-up rate increases with hydrogen concentration because the amount of iron in solution also increases. At the same time, the fluid shear forces induce a mechanical removal of the oxide for flow velocities above 15 m/s. This suggests that the CRUD deposition process occurs under mass transport control, but the overall build-up rate is also affected by flow-induced mechanical removal.",

keywords = "Corrosion deposition, Micro-fluidic, Micro-orifice, PWR primary water, Stainless steel",

author = "Stefano Cassineri and Jonathan Duff and Andrea Cioncolini and Michele Curioni and Andrew Banks and Fabio Scenini",

note = "Publisher Copyright: {\textcopyright} 2019 The Authors",

year = "2019",

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doi = "10.1016/j.corsci.2019.108113",

language = "英语",

volume = "159",

journal = "Corrosion Science",

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T1 - Deposition of corrosion products under pressurised water nuclear reactor conditions

T2 - The effect of flow velocity and dissolved hydrogen

AU - Cassineri, Stefano

AU - Duff, Jonathan

AU - Cioncolini, Andrea

AU - Curioni, Michele

AU - Banks, Andrew

AU - Scenini, Fabio

PY - 2019/10

Y1 - 2019/10

N2 - The effect of water flow velocity and dissolved hydrogen on the deposition rate of Corrosion-Related Unidentified Deposit (CRUD) was investigated under conditions relevant to pressurised water nuclear reactors using type 304 l stainless steel micro-orifices. The results indicate that the CRUD build-up rate increases with hydrogen concentration because the amount of iron in solution also increases. At the same time, the fluid shear forces induce a mechanical removal of the oxide for flow velocities above 15 m/s. This suggests that the CRUD deposition process occurs under mass transport control, but the overall build-up rate is also affected by flow-induced mechanical removal.

AB - The effect of water flow velocity and dissolved hydrogen on the deposition rate of Corrosion-Related Unidentified Deposit (CRUD) was investigated under conditions relevant to pressurised water nuclear reactors using type 304 l stainless steel micro-orifices. The results indicate that the CRUD build-up rate increases with hydrogen concentration because the amount of iron in solution also increases. At the same time, the fluid shear forces induce a mechanical removal of the oxide for flow velocities above 15 m/s. This suggests that the CRUD deposition process occurs under mass transport control, but the overall build-up rate is also affected by flow-induced mechanical removal.

KW - Corrosion deposition

KW - Micro-fluidic

KW - Micro-orifice

KW - PWR primary water

KW - Stainless steel

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DO - 10.1016/j.corsci.2019.108113

M3 - 文章

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SN - 0010-938X

VL - 159

JO - Corrosion Science

JF - Corrosion Science

M1 - 108113

ER -

Deposition of corrosion products under pressurised water nuclear reactor conditions: The effect of flow velocity and dissolved hydrogen

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Keywords

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