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A crossing between buried pipelines and transportation arteries such as railways and highways is a common reality. Nowdays it is ordinary practice, and standards are available for such pratctise1, to protect such pipelines by encasing them in a wider pipe, named Casing. The goal is to protect the carrier pipe providing an outer shell capable of withstanding mechanical stresses and eventual corrosion, without leakage risk. In usual conditions this kind of safety measure should not be necessary, still due to the difficult maintenance and monitoring accessibility below railways and highways it becomes a dependable protection method and device.
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