Environmental Emergency Management Program

Spectra Energy – Sour Gas Release

province map

Time/Date of Incident:

 February 20, 2009 at 08:02

Location:

 Approximately 400 meters from the Alaska Highway near Mile 111 of the Alaska highway.  The incident location is approximately 10 miles north of Wonowon.

Product/Quantity:

 Sour Gas release 

Cause:

 There was a malfunction involving a pigging barrel receiving site near Mile 111 of the Alaska Highway.  An 18 inch sour gas gathering line that runs to the Taylor gas plant ruptured.  The release was isolated by Emergency Shutoff Devices (ESD’s) and manual shut off valves.  The quantity of sour gas (H2S) released during the incident was unavailable for the initial incident reports.  The Alaska Highway was closed for duration of the incident.  The cause of the line malfunction is under investigation.