CSST Technology Advances

Advanced CSST flexible gas piping uses a conductive jacket

The CSST industry continues to extend the safety track record of CSST piping with product developments that provide enhanced lightning, fire, and electrical protection. It is a fact that in the United States, none of the national model building codes deal with the problems associated with lightning or other high overvoltage situations, and the consequences of those events inside the building. The scope of the National Electrical Code is limited to the safe use of electricity. Therefore, homes and buildings in the United States are not built, or designed, to withstand damage from lightning—unless a lightning protection system (LPS) is installed.

However, in 2004, a unique patented CSST piping product was introduced that was engineered to significantly decrease the potential for lightning-induced damage to fuel gas piping systems. The product was designed with a patented energy-dissipating jacket over the CSST piping to protect the stainless steel pressure liner, as well as other fuel gas system components. Energy that is dissipated will reduce the energy and attendant risk transferred downstream to valves, regulators, appliance connectors, controls and other mechanical systems, all of which could be damaged by that energy without dissipation.

The manufacturer worked with Lightning Technologies, Inc. (LTI; Pittsfield, Mass.), which maintains one of the world’s most complete, accredited, simulated-lightning test laboratories, to test the approaches to designing a gas piping product that would resist damage due to overvoltage situations such as lightning, and also comply with the requirements of ANSI LC-1 for flexible gas piping using CSST.

Subsequently, there have been further advancements in the technology and increases in the performance levels of CSST products with electrically conductive jackets.

The development of a jacket with enhanced lightning protection and easy installation, without the need for additional electrical bonding, provides a unique and comprehensive approach to protection against transient arcing and code compliance.

20 Years of Safety

As the only gas piping technology approved by ANSI and other national standards, Corrugated Stainless Steel Tubing (CSST) has been installed in millions of homes with an outstanding safety record.

Rigid Pipe Kills

Two natural forces affect gas piping: earthquakes and lightning strikes.