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Author Cincera, Silvia ♦ Barella, Silvia ♦ Bellogini, Mattia ♦ Bresciani, Elena
Source SpringerLink
Content type Text
Publisher Springer US
File Format PDF
Copyright Year ©2012
Language English
Subject Domain (in DDC) Technology ♦ Engineering & allied operations
Subject Keyword De-nickelification ♦ Cupronickel ♦ Sea water ♦ Heat exchanger ♦ Structural Mechanics ♦ Tribology, Corrosion and Coatings ♦ Mechanics ♦ Characterization and Evaluation of Materials ♦ Quality Control, Reliability, Safety and Risk
Abstract A cupronickel heat exchanger failed after 10 years of service. The cooling heat exchanger was in service in a marine environment, with water flowing along shellside and natural gas along tubeside. Many tubes showed leakages during a regular maintenance test. A comprehensive failure analysis of the heat exchanger revealed the de-nickelification process on the external side of the damaged tubes (shellside). The de-nickelification originated from a large deposit of sea water scale, over tube lengths, which completely covered the area just outside the internal portion of the tubesheet, and occurred because of a failure of the regular cleaning operation. Stagnant water and possible hot spot formations on the tubes probably caused the phenomenon.
ISSN 15477029
Age Range 18 to 22 years ♦ above 22 year
Educational Use Research
Education Level UG and PG
Learning Resource Type Article
Publisher Date 2012-04-07
Publisher Place Boston
e-ISSN 18641245
Journal Journal of Failure Analysis and Prevention
Volume Number 12
Issue Number 3
Page Count 5
Starting Page 300
Ending Page 304

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Source: SpringerLink