|# of Failure Incidents – Natural Gas
(per 1000 km)
|# of Failure Incidents – Liquids
(per 1000 km)
|# of Significant Failure Incidents – Natural Gas||4||3||0||2||2||0||1||4||0||1||2||2||2||1|
|# of Significant Failure Incidents – Liquids||2||1||0||1||0||3||2||1||6||5||2||4||2||0|
Source: CEPA Composite Indicators
Failure Incident: Any unplanned release of product due to a failure of a pipe.
Significant Failure Incident: A failure incident that includes one or more of the following:
- Caused a serious injury or fatality
- Caused a liquid release of greater than 8 m3 (50 US barrels)
- Produced an unintentional ignition or fire
- Occurred as a rupture
Incident frequencies are expressed as the number of incidents per 1000-km-years of service.
In 2015, our members reported 55 natural gas and liquids incidents, compared with 122 in 2014.* Approximately 67 per cent of the 2015 total occurred in pipeline facilities. Typically, incidents that occur within a pipeline facility pose less potential threat to the public or the environment because of their size, and the fact that facilities have both restricted public access and a leak containment system to keep the releases within the facility.
* The significant decline in reported incidents in 2015 over 2014 partly reflects new Transportation Safety Board (TSB) reporting requirements that came into effect on July 1, 2014, when the TSB introduced a liquids volume reporting threshold of 1.5 cubic metres to align with that of the National Energy Board. Prior to this, there was no TSB reporting threshold.