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http://www.fortmcmurraytoday.com ... -and-pipeline-spill) I* X0 ?6 t6 _+ G- t- G
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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$ o& n, {2 J3 C* @4 I+ bThe 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./ t. e+ ^, `( k' A
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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.7 U$ V2 k- V/ G3 H6 v
0 [ r6 E+ g9 {* u% Z9 ^ HAn internal investigation found the explosion was a result of work being performed that was "outside of the scope of approved work activities."+ Y+ c- ]4 F9 a" y- w" A) k
1 l3 K* C& n7 A; _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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& c( _/ Q! X( T6 e0 `; P9 s3 [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. # n& @* w2 ~% N: T% {- N
: o. r; q8 B, t% k" z# \5 A& AThe 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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8 {3 ]% Z }1 G! [ k3 ]6 V/ VNexen 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."+ k9 N& b A5 L$ z5 o1 I5 ]% Y ^
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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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1 h8 n! {% R1 e& p: O$ z9 ]+ O0 xThe 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. / L; ^7 V5 ^6 F ^2 t
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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.
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- w6 D4 X6 H1 u- with files from Vincent McDermott |
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发表于 2016-7-12 18:01
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