How to Detect a Natural Gas Leak and What to Do If There is One

HOW TO DETECT A NATURAL GAS LEAK

  • Smell
    Transmission natural gas has a stale petroleum/hydrocarbon smell.  Before it is delivered to your home, natural gas has mercaptan added which gives the gas a sulphur or “rotten egg” smell to help detect leaks.

  • Sight
    Natural gas is colourless, but vapour and “ground frosting” may be visible when high pressure gas escapes.  A gas leak may also be indicated by bubbles in wet or flooded areas, distinct patches of dead vegetation, dust blowing from a hole in the ground or flames if the leak has ignited.

  • Sound
    A hissing or roaring noise along the right-of-way of a pipeline could also indicate a natural gas leak.

WHAT TO DO IF YOU SUSPECT A LEAK INSIDE

  • Evacuate your premises and leave the door open when you exit.
  • Don't use electrical switches, telephones, appliances, garage door opener, etc.
  • Call Union Gas immediately from a neighbour’s home at 1-877-969-0999
  • Don’t use lighters or matches and do not smoke.

WHAT TO DO IF YOU SUSPECT A LEAK OUTSIDE

  • Call Union Gas from a neighbour's home immediately at 1-877-969-0999
  • Keep clear of the area.
  • Don’t start any motors or motor vehicles near the area of the gas odour.
  • Don’t use lighters or matches and do not smoke.

HOW UNION GAS WILL RESPOND

In the event of a natural gas emergency, the Union Gas emergency response team or local community authority will:

  • Respond to the incident site
  • Identify the source of the problem and ensure the emergency site has been cleared of anyone whose safety may be at risk
  • Make the situation safe
  • Advise the customer of their options with respect to the piping system or gas-fired equipment repair.