NFPA approves amendment prohibiting indoor gas purging

The National Fire Protection Association last week approved an emergency code change (.pdf file) prohibiting indoor gas purging of certain industrial gas lines.

The change, known as a Tentative Interim Amendment, is designed to require outdoor purging for industrial, large commercial and large multifamily buildings, according to a statement from Chemical Safety Board member John Bresland.

The new provisions are similar to those adopted by ConAgra Foods and the state of North Carolina following the fatal 2009 natural gas explosion at a Slim Jim manufacturing plant in Garner, NC.

Bresland urged Quincy, MA-based NFPA to make a prohibition on indoor purging and other related safeguards a permanent part of the National Fuel Gas Code.

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