When Lightning Strikes: Why Your Yellow Gas Lines Could Put Your Home at Risk
If your home was built between 1990 and 2006, or if you’ve had gas line work done during that time, you may have Corrugated Stainless Steel Tubing (CSST) that poses a hidden safety risk. If you live or work in a structure built between 1990 and 2006, or if gas line work was performed on your building during that period, be aware of possible safety hazards associated with CSST. Understanding CSST replacement requirements and upgrade options is crucial for protecting your home and family from potential fire hazards.
What is CSST and Why Was It Popular?
CSST is a flexible, stainless steel piping system used to supply natural gas and propane in residential, commercial, and industrial structures. CSST is short for Corrugated Stainless Steel Tubing. It was invented in the 1980’s in Japan. The reason for the development of CSST was to improve the safety of gas line systems in buildings during earthquakes.
The use of corrugated stainless-steel tubing jacketed with yellow PVC or polyethylene (CSST) as piping for natural and LP gas has been growing rapidly since its introduction in 1989. This is because of the greatly reduced installation labor compared to using conventional black pipe with threaded fittings. It is used frequently in construction in lieu of black iron pipe today, which is the traditional material used for gas distribution (both natural gas and propane). If your home is newer (say built in the past 20 years or so) there is a very good chance you have CSST installed as part of your gas distribution system.
The Lightning Strike Safety Concern
The primary safety issue with older CSST installations relates to lightning strikes. If lightning strikes on or near a structure, there is risk that it can travel through the structure’s gas piping system and cause a leak and, in some cases, a fire. A strike on or near a building can travel through the structure’s piping system and cause a damaging power surge that can produce a gas leak or fire.
The indirect lightning arcs between metal components, including the CSST, can instantly heat up and vaporize or spatter the metal in the wall of the CSST tubing at the point where the arc contacts the tube — even if the gas line is bonded and grounded. The metal vaporizes, resulting in a hole that allows fuel gas to escape and generally contributes to the growth of a fire.
Bonding Requirements and Code Changes
The industry recognized these safety concerns and implemented bonding requirements. Since 2006, all manufacturers’ instructions have specified direct-bonding and grounding of yellow corrugated stainless steel tubing (CSST) in new installations. The 2009 edition of NFPA 54, National Fuel Gas Code, includes new requirements for bonding CSST gas piping systems to the grounding conductor of the building’s electrical system, to reduce the possibility of damage by lightning strikes by reducing the electrical potential between metallic objects and building systems, including gas distribution. CSST gas piping systems shall be bonded to the electrical service grounding electrode system at the point where the gas service enters the building.
The bonding conductor must be 6-gauge or larger copper wire, solid or stranded, connected to the terminal on the UL-listed ground clamp. The bonding conductor must be 6-gauge or larger copper wire, solid or stranded, connected to the terminal on the UL-listed ground clamp.
Modern Arc-Resistant CSST Solutions
The industry has developed safer alternatives to traditional yellow CSST. Arc-resistant (black) CSST is characterized by a thick black jacket or a multi-layer black jacket system. The single-layer black jacket is designed to absorb arcing energy caused by a lightning strike preventing perforation of the tubing wall. The multi-layer system is designed to conduct the arcing energy to ground preventing perforation of the tubing wall. Both arc-resistant jacket systems provide equal protection along the entire length of the piping system, and the extra bonding described in this CodeNotes is not required.
When CSST Replacement is Required
Some jurisdictions have implemented strict replacement requirements for older CSST systems. The Act expressly prohibits the use of non-arc-resistant jacketed CSST in: (1) the new construction of a customer-owned natural gas or liquefied propane piping system in a building; (2) a natural gas or liquefied propane piping system in a renovated property if the renovation affects more than 50% of the total square footage of the property; or (3) a natural gas or liquefied propane piping system that requires the addition of a new gas line to the gas piping system.
Professional Assessment and Upgrade Options
If you suspect you have older CSST in your home, it’s essential to have it professionally evaluated. If you have yellow CSST that was installed prior to 2006, it’s possible that it does not meet current installation requirements, and it is strongly recommended that you contact a licensed electrician to make sure that your system is properly bonded. If you have yellow CSST that was installed prior to 2006, it’s possible that it does not meet current installation requirements, and it is strongly recommended that you contact a licensed electrician to make sure that your system is properly bonded.
Homeowners have several options when dealing with older CSST systems: proper bonding installation by a licensed electrician, upgrading to arc-resistant CSST, or complete replacement with traditional black iron pipe. The choice depends on your home’s specific situation, local code requirements, and your risk tolerance.
Choosing the Right Professional for CSST Services
When it comes to Gas Line Replacements in Monmouth County, NJ, selecting an experienced, licensed professional is crucial for safety and compliance. AME Plumbing Heating & Cooling has been serving the Monmouth County area as a family-owned and operated company since 2008, bringing over 15 years of experience to every gas line project.
Located in Manasquan, NJ, AME Plumbing serves residents throughout Monmouth and Ocean Counties with a commitment to honesty, transparency, and customer satisfaction. Their team of licensed professionals understands the unique challenges of coastal New Jersey, where salt air and humidity can affect gas line systems differently than inland areas. With 24/7 emergency services, competitive pricing, and extended warranties, AME Plumbing stands behind their work with a satisfaction guarantee.
The company’s dedication to excellence and community engagement has earned them a reputation as a trusted provider of comprehensive plumbing, HVAC, and gas line services. Their transparent pricing approach and personalized service ensure that homeowners receive honest assessments and quality workmanship for all gas line replacement and upgrade needs.
Taking Action for Your Family’s Safety
Don’t wait for a lightning strike to discover if your home has properly protected CSST. Have your CSST system inspected by a licensed electrician. If your system isn’t in compliance, a professional can help you take steps to protect your home or business. Whether you need bonding installation, system upgrades, or complete replacement, addressing CSST safety concerns proactively protects your home and gives you peace of mind.
Remember, gas line work should always be performed by licensed professionals who understand current codes, safety requirements, and proper installation techniques. Investing in proper CSST upgrades or replacements is an investment in your family’s safety and your home’s long-term protection.