CALGARY — Alliance Pipeline says it has shut a major Canada-U.S. natural gas conduit while it handles dangerous hydrogen sulphide gas that entered the system.
The closure of the nearly 4,000-kilometre pipeline — jointly owned by an Enbridge affiliate (TSX:ENB) (TSX:ENF) and Calgary-based Veresen (TSX:VSN) — is expected to last for an indeterminate amount of time.
To deal with the situation, Alliance says it's flaring the affected gas within the confines of a compressor station in Saskatchewan.
In a news release, Keyera (TSX:KEY) says it had a "brief operational upset" during maintenance activities this week and gas that did not meet sales gas specifications got into the Alliance pipeline.
Seven Generations Energy (TSX:VII) and NuVista Energy (TSX:NVA) say they've had to suspend operations because of the Alliance pipeline outage.
The Alliance Pipeline carries 1.6 billion cubic feet of natural gas a day from northeastern British Columbia to the Chicago area to be processed.
ALSO ON HUFFPOST: