Safety alert



Is there corrugated stainless steel tubing in your home?

You may have this product installed where you live or work. Corrugated stainless steel tubing, or CSST, has the potential to leak if your home or business is struck by lightning and the CSST is not properly bonded and grounded.

CSST is a flexible, stainless steel pipe used to supply natural gas in residential and business structures. It is often coated with yellow, or in some cases, black plastic.

• Do not confuse CSST piping with flexible natural gas appliance connectors. Flexible connectors attach directly to the appliance from the wall or floor, while CSST is usually routed beneath, through and alongside floor joists in your basement, inside interior wall cavities and on top of ceiling joists in attic spaces.

• If your gas piping system was installed or modified since 1990—including installation of a new furnace or stove—it's possible that CSST was installed. If so, MGE strongly recommends that you contact a licensed electrician to check for proper grounding. A device should be installed on your natural gas system in order to reduce the chances of a natural gas leak or fire.

If you are unsure whether CSST has been installed, contact the company that performed the work to arrange for a professional inspection.

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