The Resource Oxidation of nuclear- and matrix-grade graphite for VHTR air ingress accident scenarios, by Yoonjo J. Lee

Oxidation of nuclear- and matrix-grade graphite for VHTR air ingress accident scenarios, by Yoonjo J. Lee

Label
Oxidation of nuclear- and matrix-grade graphite for VHTR air ingress accident scenarios
Title
Oxidation of nuclear- and matrix-grade graphite for VHTR air ingress accident scenarios
Statement of responsibility
by Yoonjo J. Lee
Title variation
Oxidation of nuclear- and matrix-grade graphite for Very High Temperature Reactor air ingress accident scenarios
Creator
Contributor
Author
Thesis advisor
Subject
Genre
Language
eng
Summary
One of the most severe accidents anticipated for the Very High Temperature Reactor (VHTR) is an air ingress accident caused by a pipe break, where the reactor vessel and core become fully immersed in air as the core temperature rises potentially reaching 1873 K. Graphite oxidation is predicted to be severe under these conditions. Gasification of graphite impacts its geometry and reduces thermal and mechanical properties, thus affecting the safe performance and shortening the service-life of components constructed of graphite. We have studied the oxidation rate of several nuclear-grade and matrix-grade graphites including NBG-18 and IG-110 as well as GKrS, respectively. Oxidation data was collected thermogravimetrically for air ingress accident scenarios from 873 to 1873 K using a Thermax700® thermogravimetric analyzer. A semi-empirical Arrhenius rate equation was developed for the kinetic regime for each graphite grade. The activation energy for the matrix-grade graphite was within the limited historically reported values while the activation energy of nuclear-grade graphite was determined to be well within literature values. The surfaces of oxidized graphite samples were further characterized by SEM, EDS, FTIR and XPS
Cataloging source
MUU
http://library.link/vocab/creatorDate
1983-
http://library.link/vocab/creatorName
Lee, Yoonjo J.
Degree
Ph. D.
Dissertation note
Thesis
Dissertation year
2016.
Government publication
government publication of a state province territory dependency etc
Granting institution
University of Missouri--Columbia
Illustrations
illustrations
Index
no index present
Literary form
non fiction
Nature of contents
  • dictionaries
  • bibliography
  • theses
http://library.link/vocab/relatedWorkOrContributorName
  • Ghosh, Tushar K.
  • Loyalka, S. K.
http://library.link/vocab/subjectName
  • Nuclear reactors
  • Graphite
  • Oxidation
  • Materials at high temperatures
Label
Oxidation of nuclear- and matrix-grade graphite for VHTR air ingress accident scenarios, by Yoonjo J. Lee
Instantiates
Publication
Note
  • Dissertation supervisor: Dr. Tushar K. Ghosh nad Dr. Sudarshan K. Loyalka
  • Includes vita
Bibliography note
Includes bibliographical references
Carrier category
online resource
Carrier category code
  • cr
Carrier MARC source
rdacarrier
Content category
text
Content type code
  • txt
Content type MARC source
rdacontent
Control code
989737607
Extent
1 online resource (viii, 107 pages)
Form of item
online
Media category
computer
Media MARC source
rdamedia
Media type code
  • c
Other physical details
illustrations
Specific material designation
remote
System control number
(OCoLC)989737607
Label
Oxidation of nuclear- and matrix-grade graphite for VHTR air ingress accident scenarios, by Yoonjo J. Lee
Publication
Note
  • Dissertation supervisor: Dr. Tushar K. Ghosh nad Dr. Sudarshan K. Loyalka
  • Includes vita
Bibliography note
Includes bibliographical references
Carrier category
online resource
Carrier category code
  • cr
Carrier MARC source
rdacarrier
Content category
text
Content type code
  • txt
Content type MARC source
rdacontent
Control code
989737607
Extent
1 online resource (viii, 107 pages)
Form of item
online
Media category
computer
Media MARC source
rdamedia
Media type code
  • c
Other physical details
illustrations
Specific material designation
remote
System control number
(OCoLC)989737607

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