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Magnus Gustafsson has over 10 years experience in the design and analysis of mechanical components and systems in the Petrochemical and Railway industries. His experience includes Fitness-for-service assessments and design support of pressurized equipment including elastic-plastic Finite Element Analysis, transient heat transfer analysis, creep, hi...gh-and low cycle fatigue, fracture mechanics, fluid surge and piping flexibility analysis. More

FFS Assessment of Crack-like Flaws Discovered in Pressurized Equipment

FFS Assessment of Crack-like Flaws Discovered in Pressurized Equipment
It is often unsettling to have an inspection group discover a crack-like flaw in a piece of pressure containing equipment, particularly when the turn-around schedule is aggressive. Fortunately, there are well-established Fitness-for-service procedures in place to assess such flaws and help guide decision-making on whether to repair or to leave in place with a monitoring program. This blog post will outline the assessment approach typically employed by Becht Engineering staff when performing crack-like flaw assessments. The performance of today’s advanced inspection technologies, such as Time of Diffraction (TOFD) and Phased Array Ultrasonic Testing (PAUT), significantly surpasses the flaw detection capacities that were available only some 10 years ago. As a result, it is not uncommon to discover crack-like flaws that likely were previously undetectable fabrication flaws. Sometimes an experienced inspector and/or fixed equipment engineer can examine the inspection data and conclude with reasonable certainty that the flaws are indeed fabrication defects....
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