TITLE

Infrared thermography for high-temperature pressure pipe

AUTHOR(S)
Gongtian Shen; Tao Li
PUB. DATE
March 2007
SOURCE
Insight: Non-Destructive Testing & Condition Monitoring;Mar2007, Vol. 49 Issue 3, p151
SOURCE TYPE
Periodical
DOC. TYPE
Article
ABSTRACT
High-temperature pressure pipelines are extensively used in petrochemical plant and power stations. Severe pits or wall loss defects can be internally produced after a certain period of time due to media corrosion and cavitation erosion. These defects finally lead to leakage of the pipes. In order to search for a good non-destructive method for these defects, a large pipe testing installation was constructed. A series of infrared thermography testing experiments were performed for four kinds of stainless steel and carbon steel pipes which are drilled with different size holes on their inner-surface. The testing results show that infrared thermography is a very suitable method for non-destructive testing of corrosion pits and wall loss defects in high-temperature pressure pipes. The corrosion pits or wall loss defects that are bigger than 10 mm diameter × 40% wall thickness can be detected by infrared thermography. The testing sensitivity satisfies the requirements for safe operation of pipelines.
ACCESSION #
24330872

 

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