OUR COVER PICTURE, courtesy of A Hak Industrial Services of Tricht, Netherlands, shows a test loop replicating in full size a typical length of difficult-to-inspect pipeline that the company has set up in order to test its tethered inline inspection equipment for a particular project. A recent conference in Houston discussed a range of issues surrounding ‘unpiggable’ pipelines, and two papers from this event are published in this issue, starting on pages 125 and 129.
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