Alliance Pipeline back in service after closure due to gas in system

CALGARY – The Alliance Pipeline, a natural gas conduit that runs from northeastern B.C. to the Chicago area, is back in service after a six-day outage.

The pipeline was shut down last Friday because hydrogen sulphide-tainted gas mistakenly got into the system.

READ MORE: Poisonous gas that smells of rotten eggs prompts shutdown of BC-Chicago pipeline

Get weekly money news

Get expert insights, Q&A on markets, housing, inflation, and personal finance information delivered to you every Saturday.

Sign up for weekly money newsletter Sign Up

By providing your email address, you have read and agree to Global News' Terms and Conditions and Privacy Policy.

Natural gas processor and transporter Keyera (TSX:KEY) says an “operational upset” during maintenance at its Simonette plant in northwestern Alberta two days earlier caused the issue.

Alliance burned off the toxic gas at two locations in southeastern Saskatchewan, which it says was the safest way to dispose of it.

A number of Western Canada producers had to suspend operations while the Alliance pipeline, owned by an Enbridge affiliate (TSX:ENB) and Veresen (TSX:VSN), was out of commission.

The Alliance Pipeline carries 1.6 billion cubic feet of natural gas a day.