National Grid
Gas Safety Our gas service crews continually test, repair and improve the underground system that delivers your natural gas. Despite our best efforts, however, the possibility does exist for a gas leak in or near your home. A gas leak can occur when the ground heaves as water in it freezes and thaws. Gas could also escape from faulty or improperly operated home appliances.

A harmless odor (it smells something like a rotten egg) is added to natural gas so you can tell if there is a gas leak in or near your home.

Anytime you suspect a natural gas leak, take immediate action:
  • If it is a faint odor, call our gas emergency number at 1-800-892-2345.
  • If the gas odor is strong, or if you hear a hissing sound, get all occupants out of the house immediately and call the gas emergency number from a neighbor’s house. Do not call from your house or use the phone for any reason. Also, do not strike a match or switch lights or appliances on or off.
  • Never try to put out a fire you suspect may be caused by escaping gas. Leave immediately.
  • Do not return to your home until we tell you it is safe.

Safety in action National Grid is guided by an Integrity Management Program (IMP), which has been developed in accordance with rules established by the U.S. Department of Transportation (DOT), which also oversees the program.

The IMP was developed through the cooperation of industry experts, from both within and outside of National Grid, and meets or exceeds all federal requirements. The primary goal is to continuously improve safety by identifying, assessing, and managing risks to natural gas pipelines.

National Grid is committed to the safe operation of all of our natural gas facilities, including pipelines. Here's what we do:
  • National Grid has built upon its already extensive integrity management programs to meet or exceed new federal IMP regulations.
  • Pipelines in the IMP have been identified to federal and state regulators.
  • Using the best technologies available, we continually assess pipeline integrity through leakage surveys, monitoring of our corrosion prevention technologies, and other such programs.
  • Up to three different assessment methods are used to assure that we identify any areas of concern, which are prioritized and managed according to established and approved engineering practices.
  • Our damage prevention methods include ongoing patrols, construction inspection, periodic reassessments, and active participation in state-wide damage prevention programs.
  • Communications plans have been developed to inform and educate the public, emergency responders, and other officials about gas pipelines, their safety and integrity, and how all parties can contribute to even greater gas pipeline safety.
Related Information

Natural Gas Pipeline Safety: What You Need to Know (pdf)