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http://www.fortmcmurraytoday.com ... -and-pipeline-spill
- O; O& ^) L3 d- }( t3 D) 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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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, 2016.7 ?$ e$ J1 u9 ^5 S6 R
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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.
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# B) T( s- n# X. ~ ?, Q7 eAn internal investigation found the explosion was a result of work being performed that was "outside of the scope of approved work activities."- u) {" r2 @6 F, w) R# a8 p( B
5 p: F' ]# u) q! \( LThe 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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/ h1 N* `# b0 W i; {: _/ d/ XIn its announcement Nexen said it is addressing safety gaps in part with refresher training on workplace hazard identification, increased site supervision and safety inspections. . h7 k- |3 b$ X9 h$ c! r6 G
; d2 W; J& ]/ B% ?" `5 @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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0 F6 j" u# c/ y% bThe 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.0 Q1 ^/ Q6 ]0 x/ k& x* p
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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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( I5 Z* j# Y8 C/ g! g; nThis 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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; w# Q, n# b4 Q- |3 J1 E2 {6 k" r+ L) FThe 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. & O+ R/ N; j& W* _" z
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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. 0 K$ y B4 f" p7 a- ]7 f3 ^
- i+ X; }. H2 G0 e& P- with files from Vincent McDermott |
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发表于 2016-7-12 18:01
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