Abstract
In this review, inspection methods used in the high pressure vessel in-service, such as strain electrical measuring method, eddy current testing, ultrasonic testing, acoustic emission and optical measurement methods were summarized. The principles, characters and research progress of the above mentions inspection methods when they are used for inspecting HPV were reviewed. Finally, an attempt is made to look into the future of inspection methods of HPV with personal opinions.
Highlights
The High Pressure Vessel (HPV) is widely used in chemical, petrochemical industry, food process fields and so on
Eddy current testing is used to inspect welding cracks by a magneto probe based on the electric current perturbation method
Moiré interferometry method: Moiré interferometry method belongs to a new Nondestructive Testing (NDT) method detected displacement field and strain field of surfaces by the moiré patterns
Summary
The High Pressure Vessel (HPV) is widely used in chemical, petrochemical industry, food process fields and so on. There are many advantages for eddy current testing, such as rapid testing, higher sensitivity, evaluation for different sizes of the defects, special-shaped material and small parts detection at higher temperature, etc. Eddy current testing is used to inspect welding cracks by a magneto probe based on the electric current perturbation method It is fit for fast cracks testing and cracks depth measuring of large area metal parts and rough surface metal parts. Field tests of ultra-high pressure vessels for man-made crystal production and ultra-high pressure pipes for polyethylene showed that the presented methods had sufficient sensitivity and reliability for detecting radial defects. Ennaceur et al (2006) obtained the correlation between AE, the method of potential difference and microfractographic observation He might predict the remaining service life of a vessel from the results of short-term AE monitoring of crack propagation. Máthis et al (2011) studied strain rate tensile tests of stainless steel in supercritical water environment by the AE. Laksimi et al (2012) studied the behavior of weld defects in pressure equipment by AE and showed that AE parameters representative of a weld defect in a tank could to predict of premature failures of pressure equipment
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