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http://www.fortmcmurraytoday.com ... -and-pipeline-spill
A( ~9 k6 u P, ?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./ f% }. @3 v' K; J' ?1 T
j! b. Z& |5 ]" SThe 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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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.4 @9 U I2 l u4 n$ h9 N0 Y+ w9 q
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An internal investigation found the explosion was a result of work being performed that was "outside of the scope of approved work activities."
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% q4 D& ~; w; c3 Z* l- 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. 6 k9 u7 L. l2 ^# l4 e: J
* J8 K! R1 c+ F8 k& |1 RIn its announcement Nexen said it is addressing safety gaps in part with refresher training on workplace hazard identification, increased site supervision and safety inspections. 0 r5 _4 H5 ~. p) X4 X; y% a
+ p5 \' i+ j7 Z) r( Z2 _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.
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+ M x2 a& F- \, Z8 y9 u9 A( EThe 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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) C+ f, S/ B6 K2 M1 S7 M7 O& zNexen 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."7 i2 F H9 q8 l4 K% }
" T3 [, t- l) hThis 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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* I# D% H2 c% ~. g3 h9 OThe 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. F$ m( B& V* E0 s8 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. 2 a, e3 e! ~6 \+ e% j" f4 ^5 \. u; N
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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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