May/June 1999 Inspectioneering Journal
Date May/June 1999
Volume  5
Issue 3
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May/June 1999 Inspectioneering Journal Article Index

  • May/June 1999 Inspectioneering Journal
    By Del Underwood at Det Norske Veritas

    In two previous issues we discussed the important difference between steady and cyclic loading, and why loose bolts fail while tight ones do not. This issue will offer two suggestions for reducing the tendency for bolts to become loose.

  • May/June 1999 Inspectioneering Journal
    By Paul K. Davidson at WIS, Inc.

    EMATs (Electromagnetic Acoustic Transducers) have been used for over six years for field service inspection of in-service piping. Recent advances in technology have allowed us to inspect new types of on-stream piping.

  • May/June 1999 Inspectioneering Journal
    By Art Leach at Krautkramer

    Keeping critical equipment on-line can be a challenging task. Monitoring the wall thickness of equipment subjected to corrosive chemicals, temperature and operational changes is both a safety and manufacturing concern. Thus, on-line testing of equipment is common in most plants. A traditional testing method is digital ultrasonic thickness gauging for the measurement of wall thicknes. This one method has become the most widely used method of assuring mechanical integrity of equipment items that are prone to erosion / corrosion.

  • May/June 1999 Inspectioneering Journal
    By Richard L. Lopushanksy at Southwest Research Institute

    Southwest Research Institute (SwRI) has developed an innovative method for rapid screening of heat exchanger tubing using Guided Wave technology. This screening method can lead to an improvement in heat exchanger reliability and a reduction in the cost of operations.

  • May/June 1999 Inspectioneering Journal
    By John Reynolds at Intertek, and Mark Bell at Ethos Mechanical Integrity Solutions

    This three-part article describes some of the advanced on-stream inspection (OSI) methods available for use in inspection of pressure equipment in the petroleum and petrochemical industry. These methods can be used, under the right circumstances, to supplement or in lieu of invasive and turnaround inspections, usually at much lower cost. Cost savings associated with using OSI techniques in lieu of internal inspections may include lower total inspection costs, lower turnaround costs, avoiding lost production opportunities, and avoiding vessel cleaning and decontamination costs. On-stream inspection also avoid the safety hazards associated with confined space entry of vessels. However, to achieve these savings and benefits, and still maintain high levels of pressure equipment integrity, the owner-user must understand the technologies in order to intelligently select, apply and interpret the results of these nondestructive evaluation (NDE) methods.

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