is an underground network of pipes carrying a variety of petroleum
products including natural gas. Since pipelines are buried underground,
line markers like the ones shown here are used to indicate their
approximate location along the route. The markers can be found where
a pipeline intersects a street, highway or railroad.
markers display the material transported in the line, the name of
the pipeline operator, and a telephone number where the operator
can be reached in the event of an emergency.
markers always placed on top of the pipeline?
indicate the general location of a pipeline. They cannot be relied
upon to indicate the exact position of the pipeline they mark. Also,
the pipeline may not follow a straight course between markers. And,
while markers are helpful in locating pipelines, they are limited
in the information they provide. They provide no information, for
example, on the depth or number of pipelines in the vicinity.
of Ontario's ONE-CALL!
Before You Dig - It's the law. Contractors and
homeowners are legally required to know the location of buried
natural gas pipes before breaking ground and should use the
One-Call before starting any digging projects
on or near any pipelines. These projects include fences, flagpoles,
landscaping, storage buildings, foundations, swimming pools,
ground clearing, deep plowing, laying underground pipe or wiring,
or any other "digging" projects.
and let them know:
and where you are digging
and how you plan to dig
can you recognize a pipeline leak?
and smell are helpful in detecting pipeline leaks.
- Crude oil or
liquid petroleum products on the ground.
- A dense white
cloud or fog.
- A spot of dead
vegetation in an otherwise green location may indicate a slow leak.
- Flames (if
the leak has ignited).
- A roaring or
- A pungent odour,
sometimes like "rotten eggs".
- A gasoline-type
should you do if you suspect a leak?
Your first concern
should be for your personal safety and that of those around you.
- Leave the leak
area immediately .
- Avoid driving
into vapour clouds.
- Avoid direct
contact with the escaping gas or liquids.
- Avoid creating
sparks or other sources of heat which could cause the escaping liquids
or vapour to ignite and burn. If you find yourself in an area where
you suspect hydrocarbon vapours are present, do not light a match,
start an engine or even switch on an electric light.
- Call 9-1-1.
- Notify the