Natural Gas Leaks

  • For indoor leaks, evacuate the building and call your gas company immediately. Shut off the gas at the appliance’s supply line—or, if you cannot identify the leaking appliance, shut off gas at the meter or service valve only. When you are certain the gas is off and all ignition hazards are eliminated, ventilate by opening windows. Never ventilate while personnel are inside. If a combustible gas indicator (CGI) is available, continue monitoring until the gas company arrives.
  • Eliminate ignition hazards. Turn off radios, pagers, and cell phones, or leave them in your vehicle if possible. Do not use doorbells, light switches, matches, and lighters. If you must use a flashlight, turn it on before approaching the area.

Recognizing Gas Leaks

There are several indicators of natural gas pipeline leaks:

  • A rotten egg (mercaptan) odor
  • A hissing sound
  • Dirt spraying into the air
  • Continual bubbling in a pond or creek
  • Discolored brown vegetation amid healthy plants

DO NOT attempt to detect a natural gas leak by smell alone. Uncontrollable factors may eliminate or weaken the odor.