The Resource Adsorbed radioactivity and radiographic imaging of surfaces of stainless steel and titanium, by Haijo Jung

# Adsorbed radioactivity and radiographic imaging of surfaces of stainless steel and titanium, by Haijo Jung Resource Information The item Adsorbed radioactivity and radiographic imaging of surfaces of stainless steel and titanium, by Haijo Jung represents a specific, individual, material embodiment of a distinct intellectual or artistic creation found in University of Missouri Libraries.This item is available to borrow from 2 library branches.

Label
Title
Statement of responsibility
by Haijo Jung
Title variation
Creator
Subject
Language
eng
Summary
• Type 304 stainless steel used for typical surface materials of spent fuel shipping casks and titanium were exposed in the spent fuel storage pool of a typical PWR power plant. Adsorption characteristics, effectiveness of decontamination by water cleaning and by electrocleaning, and swipe effectiveness on the metal surfaces were studied. A variety of environmental conditions had been manipulated to stimulate the potential "weeping" phenomenon that often occurs with spent fuel shipping casks during transit. In a previous study, few heterogeneous effects of adsorbed contamination onto metal surfaces were observed. Radiographic images of cask surfaces were made in this study and showed clearly heterogeneous activity distributions. Acquired radiographic images were digitized and further analyzed with an image analysis computer package and compared to calibrated images by using standard sources. The measurements of activity distribution by using the radiographic image method were consistent with that using a HPGe detector. This radiographic image method was used to study the effects of electrocleaning for total and specified areas. The Modulation Transfer Function (MTF) of a film-screen system in contact with a radioactive metal surface was studied with neutron activated gold foils and showed more broad resolution properties than general diagnostic x-ray film-screen systems. Microstructure between normal areas and hot spots showed significant differences, and one hot spot appearing as a dot on the film image consisted of several small hot spots (about 10 $\mu$m in diameter). These hot spots were observed as structural defects of the metal surfaces
• Type 304 stainless steel used for typical surface materials of spent fuel shipping casks and titanium were exposed in the spent fuel storage pool of a typical PWR power plant. Adsorption characteristics, effectiveness of decontamination by water cleaning and by electrocleaning, and swipe effectiveness on the metal surfaces were studied. A variety of environmental conditions had been manipulated to stimulate the potential "weeping" phenomenon that often occurs with spent fuel shipping casks during transit. In a previous study, few heterogeneous effects of adsorbed contamination onto metal surfaces were observed. Radiographic images of cask surfaces were made in this study and showed clearly heterogeneous activity distributions. Acquired radiographic images were digitized and further analyzed with an image analysis computer package and compared to calibrated images by using standard sources. The measurements of activity distribution by using the radiographic image method were consistent with that using a HPGe detector. This radiographic image method was used to study the effects of electrocleaning for total and specified areas. The Modulation Transfer Function (MTF) of a film-screen system in contact with a radioactive metal surface was studied with neutron activated gold foils and showed more broad resolution properties than general diagnostic x-ray film-screen systems. Microstructure between normal areas and hot spots showed significant differences, and one hot spot appearing as a dot on the film image consisted of several small hot spots (about 10 $\mu$m in diameter). These hot spots were observed as structural defects of the metal surfaces
Also available on the Internet.
MUU
1958-
Jung, Haijo
Degree
Ph. D.
Dissertation year
1997.
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
bibliography
• Imaging systems
• Stainless steel
• Titanium
Target audience
specialized
Label
Instantiates
Publication
Note
• Typescript
• Vita
Bibliography note
Includes bibliographical references (leaves 123-127)
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
42283356
Dimensions
29 cm
Dimensions
unknown
Extent
xiv, 141 leaves
Media category
computer
Media MARC source
rdamedia
Media type code
• c
Other physical details
illustrations
Specific material designation
remote
Label
Publication
Note
• Typescript
• Vita
Bibliography note
Includes bibliographical references (leaves 123-127)
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
42283356
Dimensions
29 cm
Dimensions
unknown
Extent
xiv, 141 leaves
Media category
computer
Media MARC source
rdamedia
Media type code
• c
Other physical details
illustrations
Specific material designation
remote

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