Thank you for sharing. JoeForgive my griping but this sounds like a possible example of the OPM problem. Youll want to be sure and check with the manufacturers installation instructions of the product that was used in your home. arrow_right. When CSST piping is installed underground outside of the building, the portion of CSST which approaches the building, by necessity, becomes above ground and is exposed. If I were seller of such a property and if I were willing to make such an allowance to a buyer, I'd ask my attorney to offer a reasonable contribution to the cost of the job. Only CSST has this requirement. I grew up with a hammer in my hand, and have been a professional home inspector for 14 years. www.gastite.com/index.html, Ward Manufacturing, Inc. (manufacturer of Wardflex and Wardflex II CSST gas piping) I inspected a bi-level yesterday and came across the attached picture. Page 27 of the TracPipe CounterStrikeinstallation guideshows on table 4-3 (see image below) that the maximum allowed exposure of the CSST without the jacket is 1-1/2 2 inches. Conclusion. We will email you a link to reset your password. Only registered ICC members have access to this article at this time. The flexible gas line code in the IRC doesn't explicitly state how often it needs to be supported, but it says you must follow manufacturer instructions on spacing. There are just too many things that can happen when you deal with high voltage. Or use the SEARCH BOX found below to Ask a Question or Search InspectApedia. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); Hey Ben, in the bonding section you refer the bonding clamp and say a UL rated bonding clamp must be used and then you refer to United Laboratories. this is no longer required by the national fuel gas code. CSST or Corrugated Stainless Steel Tubing is a flexible gas piping system that has been in use in the U.S. since 1990. Hi Tom, it is my understanding that a single bond point is all that is required (as long as it follows the manufactures instructions). Keep reading to learn some of the most important code requirements for flex gas lines and to see the common manufacturer instructions for CSST installations. According to Jim Narva, executive director of the National Association of State Fire Marshals, that association is focusing on informing homeowners of the need for retrofit ground bonding of older CSST installations. FLEXIBLE APPLIANCE CONNECTOR (FAC) OR CSST GAS LINE. It would seem to me that with all the taped and doped connections in the gas line there is a good possibility that there wouldnt be a complete electrical path back to the ground. CSST seems like a great thing -- easy to install, etc. Free shipping for many products! Some CSST manufacturers will require a minimum of flex line support every 4-feet, but other companies may only need support every 8-9 feet. This code requires bonding for CSST and includes detailed specifications for installation of CSST including the installation and spacing of supports (ranging from 1.2 to 2.4m depending on pipe diameter). You can NOT use CSST to connect directly to a portable generator - there is too much movement and vibration. Telephone 800-662-0208 1116 Vaughn Parkway THESE HAVE BEEN DEEMED A SAFETY HAZARD BY THE CPSC FOR LEAKING AND SHOULD BE REPLACED IMMEDIATELY. The following example is excerpted from a local Oklahoma Building Code for Rogers County, Appendix H, , Subsection "Policy for installation of Corrugated Stainless Steel Tubing (CSST)", in Appendix H-17General Information and Or if we look at the February housing start data that means that almost 100% of new homes are using CSST gas piping - which sounds a bit dubious. Ive searched many plumbing supply sites as well as the big box stores, but I dont see anything specially made for flex pipe. Good idea! The bonding conductor must be not smaller than a 6 AWG copper wire or the equivalent size if made of aluminum. I was aware that on the yellow CSST (Gastite) type piping that you can not attach . CSST that is not arc-resistant is only allowed to use method (4) or (5) of section 250.104(B) of the NEC per section 310.1.1 of the NC Fuel and Gas Code. The bonding helps achieve an equipotential state between the CSST and other similarly bonded metallic systems (such as the water piping, structural steel, electrical raceways and coax cable). Is there such a thing as a 1" gas non corrugated flex connector tube for a commercial kitchen range on wheels that is code compliant? we are focused on a safety campaign to make homeowners aware of the need to bond yellow CSST. Please click the link in the email The International Residential Code doesn't specify the wire to be used for bonding, but it ismost commonly a #6 AWG copper conductor and installed where the solid gas pipe gas line first comes into the home. City Of Philadelphia (2011) in Philadelphia: OHCD/PHCD/RDFA Small Building Regulations (2011), Division 22 Plumbing, Quality Standards and Construction Procedures: - retrieved 14 Apr 2015, original source: http://www.phila.gov/ohcd/smallbldgspecs/smallbuildingspecsjune2011.pdf#page=231, Hardened nail plates are required where CSST passes through wood framing at distances less than 3" from the cavity surfaces. Once the breaker trips, that is called clearingthe fault and you know something is wrong by the loss of power. In Petroleum and Chemical Industry Conference (PCIC), 2010 Record of Conference Papers Industry Applications Society 57th Annual, pp. Read Also >> What Is The Code For Stairs? Such lightning-related electrical arcing can weaken or even perforate the gas piping leading to dangerous gas leaks. %%EOF Find many great new & used options and get the best deals for HOME-FLEX 3/4 in. CSST comes in rolls as long as a few hundred feet. Though this has always been a manufacturers requirement; the IRC code specifies this bonding requirement for all types of CSST since at leat 2009. . These clamps make a solid connection point to the CSST pipe and have a hole and set screw for the wire. Original source: https://tracpipe.ca/wp-content/uploads/FGP_001_DI_Guide.pdf Also seeCAN-CGA-B149.1 Natural gas installation book used in Canada. by inspectapedia.com.moderator (mod). CAN-CGA-B149.2 Propane gas installation book used in Canada. 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. 193 0 obj <> endobj Watch out: The concern is for mechanical damage or puncture and a subsequent gas leak, asphyxiation or explosion death of occupants. * Estimated delivery dates - opens in a new window or tab include seller's handling time, origin ZIP Code, destination ZIP Code and time of acceptance and will . 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 . connect a short piece of black pipe to the elbow, and connect it to the regulator installed by the propane supplier. The bonding conductor can be a solid or stranded copper or aluminum conductor. :thumbsup: As far as the NEC goes, the EGC bonds it, but CSST manufacturers specify at least a #6. Yellow is the universal color for anything gas-related in a home. An excerpt from their website states: TracPipeCounterStrikeis a patented CSST innovation based on our existing TracPipeCSST product, but that is engineered to significantly decrease the potential for lightning induced damage to fuel gas piping systems. I have never had an inspector flag an FAC on a job before in terms of a grounding requirement. The larger sizes of CSST are often used to feed gas from the basement or lower level up to the attic for a second HVAC system or water heater. Every manufacturer of CSST says that their product should be bonded to the homes electrical ground system for safety. For mobile home gas piping, care must be exercised so that such drip legs are not located in a freezable area (any water vapor or condensate that may be entrained in the gas line will settle in such legs causing pipe or fittings to rupture if it freezes). If CSST is installed along drywall or in some area where nails may be used, it needs to be protected with metal plating. Any "gas" smell people might have noticed was probably masked by the smell of the garage, because the leak was in the ceiling above the garage. This new safety requirement will require training updates for fire inspectors and building inspectors, who may be acquainted only with the code requirement which states that gas piping shall not be used for grounding purposes; and for utility workers who may have been taught to remove ground clamps from gas pipes when they encounter them. CSST Gas Piping Codes, Specifications, Industry Trade Associations. NO GROUNDING OR BONDING WILL PROTECT YOU FROM 3,000,000 VOLTS. Stringfellow, Michael F. "Causes of residential lightning fires: Electrical arcs are at the root." CSST Safety Website: www.csstsafety.com, hosted by the National Association of Fire Marshals (NASFM), http://www.firemarshals.org/ This website discusses various aspects of CSST safety including lightning hazards, electrical ground bonding and grounding connections, and recommendations for consumers. As an amateur radio operator Im very concerned about bonding. one gas supply will serve a building; however, NFPA 54 does not prohibit the use of more than one fuel gas in a building. If you were to introduce electrical current on one of the wires, the bonding will spread things out and keep thevoltage from wanting to arc (or jump) from one conductor to another. CSST Corrugated Stainless Steel Tubing 70 Ft 3/4" Flexible Natural Gas Line Pipe. A separate grounding electrode and grounding system cannot be established just for the fuel gas piping system. CSST is short forCorrugated Stainless Steel Tubing. Its when things go wrong the ground wire steps up and become the hero. CSST is short forCorrugated Stainless Steel Tubing. You run the risk of crushing or damaging the CSST tubing when you place the clamp on it and that is a bad thing. CSST is also installed in other countries. Flexible appliance connectors also have a corrugated pipe except that the corrugation is visible and there is no plastic sheathing. The connection point made to the gas distributionsystem should be downstream from the gas meter or propane regulator. Only one image can be added per comment but you can post as many comments, and therefore images, as you like. The bond to the water line seems acceptable rather than running a wire to the service box. The bonding jumper shall connect to a metallic pipe or fitting between the point of delivery and the first downstream CSST fitting. Thanks. For an isolated leak replace just the leaky section. The maximum allowed bending radius is usually 3-inches for 3/4" CSST and up to 5-inches for 1" or larger CSST. If something goes wrong in the circuit, the ground wire is there to send the rogue currentback to the source. The course will provide CSST installation code basics, including general sizing and installation, with an emphasize on the connection between the fireplace appliance and the CSST system. I would call the maker of your CSST and ask them what they require. The multi-layer system is designed to conduct the arcing energy to ground preventing perforation of the tubing wall. I am an HVAC contractor. That device completes the circuit and the current returns back to the source (the electric panel) via the white wire. Corrugated Stainless Steel Tubing - or CSST - is a yellow flexible pipe used to provide natural gas and propane to many homes and businesses. Goodson in a patent application (2009) also reported on the effectiveness of direct bonding of both yellow and black CSST gas piping to reduce the risk of damage from indirect lightning flashing. 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