Evolution of compound pellet inspection [power cables]

The history and merits of various techniques developed to achieve the current levels of cleanliness in the cable industry are reviewed, with regard to the fabrication of polyethylene and cross-linked polyethylene insulation and shield materials. The detection methods now used include magnetics, eddy currents, and electrooptics. A description of commercially available equipment and statistically based reasons for a 100% inspection program at the site of cable manufacturing are included.<
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