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Improved Leak-Repair Methods: Engineering Design Phase

机译:改进的泄漏修复方法:工程设计阶段

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Engineering designs were developed for three gas pipe leak-repair concepts: an internal epoxy spraying device; an external clamp; and a heat shrink sleeve with a flexible heater blanket. These techniques are intended for the repair of leaks in steel and cast iron pipelines 4 to 12 inches in diameter, and are designed to be performed without disrupting service to gas customers.

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