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  • Residual Stresses In OTSG Tube Expansion Transitions (.pdf)
    ) inspection of. this region had determined that an axial defect was. present in the expansion transition approximately 2.5. cm below the primary face of the hot leg tubesheet. Examination of the pulled tube section identified the. defect as an ID-initiated primary water stress. corrosion crack (PWSCC
  • Utilization of Infrared Inspection: A Comprehensive Distillation Furnace Inspection Program
    furnaces only have 1 to 3 thermocouples per pass. In service applications that involve internal fouling such as distillation, it is not unusual to see tube metal temperature variations of 200° F or more in areas of fouling. This paper describes how an infrared inspection program can identify
  • Nuclear Weld Inspections
    Combustion Engineering. designed a system to remotely. repair coolant tubes in heat. exchangers. The process called. for inserting new liner tubes into. old corroded tubes and to weld. the top and bottom of each liner. tube. The difficult part was to. inspect the weld when the. heat exchanger
  • Destructive Quality Testing of Welded Steel Tube (.pdf)
    when inspection is used to replace prevention. Early detection of defects is essential to rectifying the problem in order to minimize the defective footage produced.
  • Case Study: Sixteen Eyes Can See Better Than Two
    AICON 3D Systems GmbH is one of the world leading providers of optical camera based 3D measurement systems. The company located in Braunschweig, Germany, develops and distributes systems for the business areas of inspection and testing as well as car safety and tube inspection. The majority
  • The Third Way for ICH Q7A: A Proposal for Updating Guidance for API Inspections
    By Emil W. Ciurczak, Contributing Editor The schematic of a CE instrument is seen in Figure 3. The tube connects two buffer reservoirs charged as + and -. The samples are introduced via the sample vial which takes the place of the anode, causing sample molecules to migrate to the cathode. While
  • An Old Quality Lesson From Failure of a New Heat Exchanger (.pdf)
    condensers. All have many years of satisfactory service except the newest condenser which failed after only four months in service (typical service life is 8 to 15 years). Initially, one tube failed but subsequent inspection found numerous leaks at the rolled joint between the zirconium tube
  • General Information about Borescopes
    Bore scope is a rigid (industrial endoscope) or flexible (fibrescope, flexible borescope) tube with an eyepiece on one end, an objective lens on the other linked together by a relay optical system in between. Borescopes are used for inspection work (borescope inspection) where the area

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