The Lightning Protection Institute (LPI) is joining forces with the National Association of State Fire Marshals (NASFM) to improve safety measures connected with corrugated stainless steel tubing (CSST). The product has been widely used for residential gas lines due to its ease of installation, but its corrugated design and thin walls make CSST susceptible to lightning’s high-intensity electric charge, as demonstrated by the damaged CSST in the photo. The energy can perforate holes in CSST and allow gas leakage and fire. Safety officials believe millions of homes are at risk.
While installing lightning protection — including proper bonding and grounding — reduces risks associated with CSST, LPI and NASFM are petitioning the codes and standards community to require compliance with ICC-ES PMG LC1027, a more rigorous product standard that will reduce CSST’s vulnerability to lightning.
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