Natural Gas Leaks
- Indoor leaks. Evacuate the building 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.
- Outdoor leaks. Evacuate the area immediately. Establish a restricted area. Contact the local natural gas utility immediately to shut off the gas. Never try to operate a pipeline valve or relief vent.
- Avoid ignition hazards. Turn off radios, pagers, and cell phones, or leave them in your vehicle if possible. Avoid using doorbells, light switches, matches, and lighters. If you must use a flashlight, turn it on before approaching the area.
Recognizing Gas Leaks
Not all gas has been odorized, so do not attempt to detect a natural gas leak by smell alone. Use your senses of sight and hearing as well, and be alert for these warning signs.
- A distinctive, sulfur-like odor
- Continuous bubbling in water
- A hissing, whistling, or roaring sound
- Dead or dying vegetation (in an otherwise moist area) over or near a pipeline
- Dirt or water being thrown into the air
- An exposed pipeline after an earthquake, fire, flood, or other disaster