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http://www.fortmcmurraytoday.com ... -and-pipeline-spill/ j2 w8 ?0 ]0 t
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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4 {/ J: P- @, Q+ W% GThe 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, 2016.2 ~( y- j. b! H; y# k6 q' A5 N
" @3 ]7 }$ n" |The 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.# ?) c- b; d7 j2 q5 P( W' W
4 ]4 K2 h, v4 x3 ~) K1 K( X% G* d7 RAn internal investigation found the explosion was a result of work being performed that was "outside of the scope of approved work activities."' J- ` ^' w/ e* ]% Z) k
: U" J1 {2 Y5 _- }, BThe 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. $ {3 q3 E* I3 X. I9 s
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In its announcement Nexen said it is addressing safety gaps in part with refresher training on workplace hazard identification, increased site supervision and safety inspections.
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The 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. 5 _( o$ ~# d( g& z |
0 j. P, {6 B1 T) h6 j0 Y. sThe 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.# \- F8 e- p# U( ^
/ l+ s8 p% O# |0 h# e* e& N% jNexen 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."/ l, f o5 Q7 a) u
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This 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. 9 g% ?9 a# m. W; x" }4 v9 F
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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. / p# I: ?" [3 _* T# F
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- with files from Vincent McDermott |
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发表于 2016-7-12 18:01
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