Analyzes the coal gas piping to leak of reasons, introduces the coal gas piping to leak of first-aid repair the methods and regulation.

分析了煤气管道泄漏的原因，介绍了煤气管道泄漏的抢修方法和注意事项。

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The author proposes to properly increase the flue gas piping diameter of a high temperature boiler with a view to enhancing the drying capacity of the said coal pulverization system.

本文提出适当加大现有的高温炉烟管道直径的方法，用以提高制粉系统的干燥出力。

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The EPA mentions the cost to bring coal-fired plants into compliance, but does not mention the much more expensive cost of piping natural gas to a refinery.

FORBES: Cheap Natural Gas Will Kill More Coal Plants Than Us: EPA