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Evaluation of Effect Of Operating Temperature To Corrosion under Insulation (CUI)

Corrosion under insulation (CUI) is a major common problem shared by all of the refining, power, industrial, petrochemical, onshore and offshore industries on a worldwide scale. CUI is a form of localized external corrosion that occurs in carbon manganese, low alloy, and austenitic stainless steel p...

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Main Author: Ismail, Muhammad Hafiz
Format: Final Year Project
Language:English
Published: Universiti Teknologi PETRONAS 2014
Subjects:
TJ Mechanical engineering and machinery
Online Access:http://utpedia.utp.edu.my/14268/1/Dissertation%20-%20Muhammad%20Hafiz%20-%2013705.pdf
http://utpedia.utp.edu.my/14268/
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spelling my-utp-utpedia.142682017-01-25T09:37:17Z http://utpedia.utp.edu.my/14268/ Evaluation of Effect Of Operating Temperature To Corrosion under Insulation (CUI) Ismail, Muhammad Hafiz TJ Mechanical engineering and machinery Corrosion under insulation (CUI) is a major common problem shared by all of the refining, power, industrial, petrochemical, onshore and offshore industries on a worldwide scale. CUI is a form of localized external corrosion that occurs in carbon manganese, low alloy, and austenitic stainless steel piping and vessels that occurs underneath externally clad /jacketed insulation due to the penetration of water[1]. The majority of CUI occurrences reported are between the -4°C and 175°C (25°F and 347°F). This research is done to study the relationship between operating temperature and corrosion rate due to CUI. A laboratory cell was setup according to ASTM G189-07 for the simulation of CUI. The CUI cell consisted of six carbon steel ring specimens separated by insulated spacers and held together by blind flanged pipe sections on both ends. Thermal insulation which was placed around the testing section provided the annular space to retain the solution which represents the test environment. The ring specimens were used to test electrodes in two separate electrochemical cells. Corrosion measurements were made using both electrochemical polarization resistances and mass loss data under isothermal test conditions. The corrosion rate at higher operating temperature (121°C) was found to be higher compared to corrosion rate at lower operating temperature (65°C). Universiti Teknologi PETRONAS 2014-05 Final Year Project NonPeerReviewed application/pdf en http://utpedia.utp.edu.my/14268/1/Dissertation%20-%20Muhammad%20Hafiz%20-%2013705.pdf Ismail, Muhammad Hafiz (2014) Evaluation of Effect Of Operating Temperature To Corrosion under Insulation (CUI). Universiti Teknologi PETRONAS. (Unpublished)
institution Universiti Teknologi Petronas
building UTP Resource Centre
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Petronas
content_source UTP Electronic and Digitized Intellectual Asset
url_provider http://utpedia.utp.edu.my/
language English
topic TJ Mechanical engineering and machinery
spellingShingle TJ Mechanical engineering and machinery
Ismail, Muhammad Hafiz
Evaluation of Effect Of Operating Temperature To Corrosion under Insulation (CUI)
description Corrosion under insulation (CUI) is a major common problem shared by all of the refining, power, industrial, petrochemical, onshore and offshore industries on a worldwide scale. CUI is a form of localized external corrosion that occurs in carbon manganese, low alloy, and austenitic stainless steel piping and vessels that occurs underneath externally clad /jacketed insulation due to the penetration of water[1]. The majority of CUI occurrences reported are between the -4°C and 175°C (25°F and 347°F). This research is done to study the relationship between operating temperature and corrosion rate due to CUI. A laboratory cell was setup according to ASTM G189-07 for the simulation of CUI. The CUI cell consisted of six carbon steel ring specimens separated by insulated spacers and held together by blind flanged pipe sections on both ends. Thermal insulation which was placed around the testing section provided the annular space to retain the solution which represents the test environment. The ring specimens were used to test electrodes in two separate electrochemical cells. Corrosion measurements were made using both electrochemical polarization resistances and mass loss data under isothermal test conditions. The corrosion rate at higher operating temperature (121°C) was found to be higher compared to corrosion rate at lower operating temperature (65°C).
format Final Year Project
author Ismail, Muhammad Hafiz
author_facet Ismail, Muhammad Hafiz
author_sort Ismail, Muhammad Hafiz
title Evaluation of Effect Of Operating Temperature To Corrosion under Insulation (CUI)
title_short Evaluation of Effect Of Operating Temperature To Corrosion under Insulation (CUI)
title_full Evaluation of Effect Of Operating Temperature To Corrosion under Insulation (CUI)
title_fullStr Evaluation of Effect Of Operating Temperature To Corrosion under Insulation (CUI)
title_full_unstemmed Evaluation of Effect Of Operating Temperature To Corrosion under Insulation (CUI)
title_sort evaluation of effect of operating temperature to corrosion under insulation (cui)
publisher Universiti Teknologi PETRONAS
publishDate 2014
url http://utpedia.utp.edu.my/14268/1/Dissertation%20-%20Muhammad%20Hafiz%20-%2013705.pdf
http://utpedia.utp.edu.my/14268/
_version_ 1739831982910603264
score 13.211869

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