Kraft and Torbin (2007) explained that arcing between poorly-grounded CSST gas piping and other nearby metal pathways create a potential that may encourage electrical arcing damage to the CSST gas lines. It is estimated to be in about 6-8 million homes where it was installed before bonding was a code requirement or manufacturer installation instruction, Between the early 1990s when it was introduced in the US market and the mid 2000s when the requirements came about is the target we are trying to reach and unfortunately no one knows where those 6-8 million homes are in the US. Homeowners should check with the manufacturer to see if their CSST has an arc-resistant protective jacket. The 2018 and 2021 IFGC and IRC recognize advances made by CSST manufacturers to produce a more robust, arc-resistant, (black) jacket system that does not require the direct bonding required for traditional (yellow) CSST products. Chances are that it was not done at all, and you need to rectify that. 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. 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 . Ive never done it, but I just may the next time I see it for fun. CSST is flexible steel piping used in place of rigid, black steel pipe . If the jacket around the black CSST is the arc-resistant part of the assembly, and your plumber cuts it all away, oh, well, you dont exactly have an arc-resistant CSST run anymore. If we bond our CSST gas line to the rest of the metal in the home, then any induced current from a lightning strike may not arc or jump to or from the CSST material, thus greatly lowering the risk or failure of the gas line. A Discussion About CSST Gas Lines and its Requirements. endstream endobj startxref As Mark Cramer says it depends. One popular brand that is sold is known asTracPipe Counter-Strike. There was an oven installed at the adjacent kitchen. |$@Z" o2,I` BP16 LTx @*}(9i Find many great new & used options and get the best deals for CSST Corrugated Stainless Steel Tubing 70 Ft 3/4" Flexible Gas Line P. at the best online prices at eBay! The bond to the water line seems acceptable rather than running a wire to the service box. All electrodes used must be bonded together into one common grounding electrode system in accordance with IFGC Section 310.2.3/IRC Section G2411.2.3. Ideally, you want to put the bonding clamp in a spot where the wire will be asshort as possible back to the electric panel. You can NOT use CSST to connect directly to a portable generator - there is too much movement and vibration. If this event takes place close enough to your house, it can enter the structure via any available path. Your email address will not be published. Where the clamp is attached to rigid pipe, the pipe surface must be clean and free of paint and coatings to enable a metal-to-metal connection. Doesnt all this bonding assume that every joint in the gas line has good metal to metal contact to be able to carry the stray current to the bonding wire? However, it's not nearly as durable as a black iron pipe. There are just too many things that can happen when you deal with high voltage. TracPipeCounterStrikehas been designed with a proprietary jacket material in place of the standard yellow jacket. My blog is here for info about home inspections around the Louisville, Kentucky area, and just about anything construction-related. Something that would not fatigue like the standard corrugated gas flex tube would. I wonder if you would do an article on it? Always verify the flexible gas line code with your local state or city and with the manufacturer. Each aboveground portion of a gas piping system other than CSST that is likely to become energized shall be electrically continuous and bonded to an effective ground-fault current path. 1-9. An Underwriters Laboratories listed bonding clamp 467 should be used to make the electrical connection to the CSST gas line. There is a difference. Natural Gas and Propane Installation Code (CSA B149.1), the . An older home is likely exempted (grandfathered-in) from current CSST gas line code, but homeowners that have flexible gas lines should have it evaluated by a qualified plumber or electrician. The location of the bonding clamp on the gas piping system must be selected to comply with the maximum allowable conductor length. CSST Corrugated Stainless Steel Tubing 70 Ft 3/4" Flexible Natural Gas Line Pipe. I have bonded several older CSST gas systems. Existing steel or copper piping systems must be retroactively bonded when modified by adding yellow (non-arc-resistant) CSST to the system regardless of the length of CSST added. NOW THAT YOU CAN SPOT THE DIFFERENCE BETWEEN CSST AND GAS APPLIANCE CONNECTORS LIKE A PRO, LETS TALK ABOUT THE ELECTRICAL GROUNDING & BONDING OF THESE GAS SYSTEMS. Most of the CSST runs are 1/2, 3/4 and even up to 1. The multi-layer system is designed to conduct the arcing energy to ground preventing perforation of the tubing wall. Goodson, Mark E. "Method of preventing electrically induced fires in gas tubing." %PDF-1.6 % Every manufacturer of CSST says that their product should be bonded to the homes electrical ground system for safety. Can csst be supported on the bottom of floor joists in basement. In Petroleum and Chemical Industry Conference (PCIC), 2010 Record of Conference Papers Industry Applications Society 57th Annual, pp. And no, you cant just wrap the wire around the pipe a few times like Ive had people ask. As an amateur radio operator Im very concerned about bonding. U.S. Patent 6,173,995, issued January 16, 2001. Free shipping for many products! 1. The bonding conductor must be no longer than 75 feet (22,860 mm). It has 6 units. Uniform Plumbing Code, the . IT IS VITAL TO UNDERSTAND THAT NONE OF THIS HAS ANYTHING TO DO WITH LIGHTNING PROTECTION FOR YOU OR YOUR HOME. You also need to make sure the clamp is not placed on the actual CSST tubing itself like the photo below. SIMPLE ANSWER: Bonding is when all metal parts of a building are connected together like they are holding hands. 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). Ground fault protection of arc-resistant CSST is handled in the same manner as steel pipe and depends only on the presence of an equipment grounding conductor contained within a branch circuit, which powers one or more of the gas appliances served by the entire piping system. one gas supply will serve a building; however, NFPA 54 does not prohibit the use of more than one fuel gas in a building. My unit is on the middle. When the restoration contractor removed one section of drywall, the smell of gas poured out. connect a 90 joint to Corrugated Stainless Steel Tubing (CSST), drop it through the hole drilled in the header and fish it through the hole in the exterior wall. The manufacturer will specify where and when shutoff valves will need to be required. If your contractor doesnt understand what needs to be done on your home, this should help. These clamps make a solid connection point to the CSST pipe and have a hole and set screw for the wire. Since the CSST gas line has such a thin metal wall (0.3 mm thick) it is important to protect the gas line from nail punctures. From the research I did, it seems that bonding has been required since around 2006, which means that there are lots of homes throughout the world that have no bonding installed on the CSST. It is an alternative to rigid steel or iron pipes generally used to carry natural gas through a home. My OPINION is that for such items an allowance, rathe rather than doing the work, is a better deal for both buyer and seller.For the seller, you avoid getting dragged into an abyss of unknown hassle and expanding costs.For the buyer, she can be certain that the work is both done properly AND that the work was performed by someone who is accountable to her. In some U.S. states such as in Massachusetts, CSST is required to have a metal cover to protect it from lighting and the elements when outside. The gas appliance connector itself (shown in the photo just above) may be connected directly between the end of the CSST and the appliance, or the CSST may terminate or be mixed with black iron gas piping in the same building. Thanks Ben for your quick reply. Inspectors should note the presence of this marking when inspecting for compliance with IFGC Section 310.3/IRC Section G2411.3. When you cannot use a labelled, listed flexible connector use the type of iron pipe and fittings that your local code officials will insist upon.Watch out: 1. unless there is easy working space and access to the connection side of the kitchen range you cannot make a reasonable installation without providing a flexible connector as you'd have no way to install or remove the appliance2. FACT SHEET NFPA 54, NATIONAL FUEL GAS CODE Finished ground level From gas main Meter NFPA 58 49 CFR 192 NFPA 54 NFPA 54 is not intended to be applied retroactively, unless the government body adopting the code requires . Homeflex CSST Gas Line Tubing. 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. If you need help, contact our WebSupport via LiveChat. National Fuel Gas Code (ANSI Z223.1/NFPA 54), the . Albino, Mark. The installation of an extra bonding connection is in addition to the bonding required in IFGC Section 310.1/IRC Section G2411.1 for ground fault protection. The history and field experience of CSST use in North America led to concerns about possible pitting, corrosion or perforation of the original yellow CSST gas piping in areas where lightning strikes were common. Yellow "Standard" CSST gas pipin galso requires special electrical ground bonding to reduce risk of damage & leaks in areas of high lightning strike activity. Probably. 3. doens't look horrible. Rationale. They are a service that tests (to failure) every product it certifies. connect a short piece of black pipe to the elbow, and connect it to the regulator installed by the propane supplier. The code requirements from latest model codes, 2018 National Fuel Gas Code and 2018 International Fuel Gas Code will be presented. Thanks J. 2012 NFPA 54 NATIONAL FUEL GAS CODE Chapter 7 Gas Piping Installation. A qualified electrician or plumber should verify proper installation of the flexible gas line. Many U.S. states and foreign countries use the IRC for their building code, sometimes with matching language. CSST is a flexible gas line material that has been used in millions of homes across the United States and the world. This document requires that CSST gas pipe to be bonded to the premises electrical grounding system. I am also aware of the FACs on the market today, although it is not a product I typically use. ", 2012 International Conference on Lightning Protection (ILCP), Vienna, Austria. HEADS UP!!! According to the CSST Safety Website (below), corrugated stainless steel tubing is installed in about 500,000 new homes each year. Good idea! How many homes have CSST installed? CSST remains popular because of its flexibility, easy installation, and reduced leakage risk. We hope you enjoy this newest edition of CodeNotes. Joe said this was the unofficial- official rule. What we are learningnow is that installations of CSST gas pipe need an additionalbonding point to the homes system grounding for fire safety. the other end of the CSST would run through the attic and down . You will likely have to bond your TracPipe CounterStrike CSST as mentioned above for the yellow version. I live in Southern California, so he said that this is a big plus specially when it comes to earthquakes since the lines won't break. Corrugated Stainless Steel Gas Line Tubing. Protective plates need to be installed to protect flex gas lines from punctures. The bonding jumper shall connect to a metallic pipe or fitting between the point of delivery and the first downstream CSST fitting. A separate grounding electrode and grounding system cannot be established just for the fuel gas piping system. SECTION G2423 (413) COMPRESSED NATURAL GAS MOTOR VEHICLE FUEL-DISPENSING FACILITIES. Hey, I'm Arie and I created this site. Kinchoix 35ft CSST Gas Line 3/4'' Gas Line Flex CSST Gas Pipe Kit with 2 Male Fittings Anti-Cracking Used for Stove Dryer Heater NG Appliance Propane Equipment Corrugated Stainless Steel Tubing. It is snaked through the building as part of the distribution system and the runs are cut and put together on the job site. %%EOF 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. CSST may be protected either by installation of an extra bonding connection (IFGC Section 310.2/IRC Section G2411.2) or by the use of a listed arc-resistant jacket (IFGC Section 310.3/IRC Section G2411.3) in accordance with the national standard CSA/ANSI LC-1. 3. Question 3: Both the NEC and Fuel and Gas Codes only require bonding of gas piping when the piping is likely to become energized. origin ZIP Code, destination ZIP Code and time of acceptance and will depend on shipping service selected and receipt of cleared payment. Flexible steel conduit is required where CSST is routed in "floppy sections" through building cavities where it cannot be secured away from cavity surfaces. arrow_right. "Secondary contained csst pipe and fitting assembly." Examples includeHomeFlex INSTALLATION MANUAL [PDF] Valencia Pipe Co., Flexible gas line or CSST is easy to install. 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. I think it is the black csst, May have a continuous ground, through the length of the pipe. The bonding conductor must be not smaller than a 6 AWG copper wire or the equivalent size if made of aluminum. Yes and fastened to wall has quick coupler connection. Kraft, Brian, and Robert Torbin. National Standard of Canada, the . The conductor can be installed indoors or outdoors. Furthermore, in most jurisdictions, gas lines are not allowed to travel beneath the slab of the residence (sidewalks, patios, etc, are ok, but not under the garage or living spaces) unless installed in a gas -tight conduit, sealed at each end. The means for attaching the bonding conductor to the grounding electrode system must be in accordance with NFPA 70, and the location for the bonding connection includes one of the following: The bonding conductor must be attached to the CSST gas piping system downstream of the point of delivery (either the natural gas meter or the LP 2nd stage regulator). As part of its goal to serve the needs of plumbing, mechanical and fuel gas (PMG) officials, the ICC PMG Official Membership Council is committed to providing free, informative code support documents known as CodesNotes that can be used to complement building departments in-house weekly supplemental training. Required fields are marked *. These supports basically hold the flex gas line in place and help prevent unwanted movement of the gas line. No product, including the improved TracPipeCounterStrikeis immune to the damage caused by a direct lightning strike. 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. 20%26%20Installation%20Instruction%20Manual.pdf, "Lightning Safety Warnings from Manufacturers of Corrugated Stainless Steel Tubing (CSST)", Amerigas Corporation, Valley Forge PA, USA, (2013), Tel: 1-800-263-7442, - But CSST is indeed in widespread use as gas piping in both exposed and hidden locations. SECTION G2425 (501) GENERAL. U.S. Patent 8,399,767, issued March 19, 2013. The manufacturer's reply was essentially that the CSST needed to be kept 3" away from finished surfaces or protected by nail plates if also within 5" of some constraint (like a penetration through a framing member). Yellow is the universal color for anything gas related in a home. The current Fuel Gas Code requires CSST to be bonded anywhere along the electrical service grounding electrode system . Youll have the opportunity to discuss issues that you face as a community, and how ICC might best serve you. Keep in mind that this job requires you to run wires inside the electrical panel of the home so youll want to let the pros handle this one. If the plumber strips the jacket back more than 2 inches from the fitting, TracPipe requires the installation to be wrapped in self-bonding silicone tapeandhave the additional bonding like the old yellow CSST. I would call the maker of your CSST and ask them what they require. Hi Alex As far as I know, there is no additional bonding requirement for flexible appliance connectors. "Corrugated tubing fitting." Jul 20, 2012. . Industry Applications, IEEE Transactions on 48, no. arrow_right. Minnesota's 2015 Fuel Gas Code uses the 2012 International Fuel Gas Code, which requires CSST to be bonded anywhere along the electrical service grounding electrode system. Stringfellow, Michael F. "Causes of residential lightning fires: Electrical arcs are at the root." The CSST gas lines do not appear to be properly bonded as required by the National Fuel Gas Code (NFPA 54) 7.13.1 Pipe and Tubing Other than CSST. 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. 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. "Sealing devices and methods of installing energy dissipative tubing." I am a licensed home inspector in Virginia and have inspected thousands of homes. I think that only Ward continues to produce the yellow CSST for sale in the U.S. Durham, Robert A., and Marcus O. Durham. They are designed to connect an appliance to the gas distribution system of the building, which can be made up from black iron pipe or CSST. Thank you! The ribs on CSST gas lines are not as pronounced as they are on FACs. Albino, Mark. During everyday life, the ground wire isnt doing anything. "The OPM problem is explained at OTHER PEOPLE's MONEY. DennisCSST is code-approved in Canada - though must be installed by a qualified installer. arrow_right. How to age a Bradford White Water Heater? CSST x 25 ft. Standard on Manufactured Housing (NFPA 501), the . Treichel, Steven A. CSST is short forCorrugated Stainless Steel Tubing. * 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 . Here are some typical protective measures specified by CSST tubing manufacturers cited in the references above. CSST seems like a great thing -- easy to install, etc. I am an HVAC contractor. Studies have confirmed that a lighting strike near a home can puncture the membrane of CSST as result of the power surge. Sounds like black iron will do the trick . CSST is short for Corrugated Stainless Steel Tubing . Website: 3. Plumbers and homeowners will need to follow the manufacturer's requirements and they should not bend the CSST too far. Dov Ber Kahn, a home inspector in Rockland County, NY has contributed photographs of various building features. [At left, a new CSST gas piping installation, incomplete, is illustrated, courtesy of Carson Dunlop Associates (found at page bottom, Click to Show or Hide) .]. Only one image can be added per comment but you can post as many comments, and therefore images, as you like. The conductor must be attached to the piping system using a listed bonding clamp in accordance with UL 467. How can the CSST be bonded when its not near my unit or the electric panel? Thanks! The idea is fairly simple. Bonding CSST is quite simple, you just have to follow a few simple rules. 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? 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