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http://www.fortmcmurraytoday.com ... -and-pipeline-spill
: F4 m( E$ c3 v5 G; J6 s" oNexen 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.7 D9 L: x9 e3 M. K: x$ b: P; x) q
7 ?5 [4 W% ~3 {+ Z7 h! 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.
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, i- r$ P5 n3 j% A# \8 oThe 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.
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) B* q- w7 B1 gAn 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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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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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. % z- d5 M( V# ?5 v: a, ?
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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. ~: m) D+ |8 q" I6 m3 R5 J& |. ?2 f
5 I* n8 {0 y) p+ h) N, j; PThe 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.. B2 {% T- B& y( O; I3 }1 t- @
' O' u& J% t2 ~& G! KNexen 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."3 q& V/ ~! e# Y! N
+ C, z3 m' M1 _% `0 GThis 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. 3 Q7 O; ~; g: w8 ]& H* _' v
7 u0 V4 V |* u9 }) x5 `8 vThe 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. ) J5 c7 u u" 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. 3 `$ B5 J" t# c/ R9 d+ f4 G4 [* g
& d* ^2 q4 A X- with files from Vincent McDermott |
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发表于 2016-7-12 18:01
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