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http://www.fortmcmurraytoday.com ... -and-pipeline-spill
7 Z$ r1 W0 V F# A( ]Nexen Energy will lay off about 350 workers from its Long Lake facility, following its release of results of internal investigations into a July 2015 pipeline spill and the January 2016 hydrocracker explosion.
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The CNOOC-owned energy company will only be continuing its steam-assisted gravity drainage (SAGD) operations at Long Lake, after it determined a short-term repair was not possible for the hydrocracker unit, which killed two employees when it exploded on Jan. 15, 2016.
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0 N0 O/ P, ?. y7 XThe facility's upgrader has been idling since then, and will be moved into winter preservation, with no estimation of when it will be brought back into service.+ s- Y, ?+ n. B1 d- A. S
1 o# H: e7 k! F" d' W" i! rAn internal investigation found the explosion was a result of work being performed that was "outside of the scope of approved work activities."& {$ P" R0 B2 L! I! g; j
' B& G C. M4 C) ]The two employees killed, both Fort McMurray residents, were 52-year-old Drew Foster and 30-year-old Dave Williams. Foster was killed in the explosion. Williams, who was flown to the University of Alberta Hospital's burn unit hours after the explosion, died a week later.
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* O* z0 i' D4 r/ L! ~# _. iIn its announcement Nexen said it is addressing safety gaps in part with refresher training on workplace hazard identification, increased site supervision and safety inspections. ( u" g, o0 B6 E' y0 O
7 w- y) r! r2 ^: J) s$ kThe decision to move to a SAGD-only operation was described as "entirely economic," and will result in about 350 staff layoffs, most of which will be completed by the end of 2016.
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The results of the investigations were given at a news conference on Tuesday by Nexen CEO Fang Zhi and Senior Vice President of Canadian Operation Ron Bailey.
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# J- m o3 c+ Q/ ~7 Z) ^Nexen also said it found the root cause of a July 2015 emulsion spill at Long Lake to be a "thermally-driven upheaval buckling of the pipeline, and the subsequent cooldown during the turnaround."
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6 p1 _* e% m# `* dThis was caused because of pipeline design incompatible with the muskeg ground conditions, and steps that could have been taken to mitigate the potential for buckling were not addressed.
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The spill poured up to five million litres of emulsion - a mixture of water, bitumen and sand - into surrounding muskeg. The spill may have been ongoing for up to two weeks when it was discovered in July 2015 by a contractor walking through the area.
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. U4 v9 m; d# F0 m. {In August the Alberta Energy Regulator ordered Nexen to shut down 95 pipelines until the company could prove the pipelines could be operated responsibly. The suspension was lifted in September 2015. * m, h; r$ d8 x5 _
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- with files from Vincent McDermott |
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