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http://www.fortmcmurraytoday.com ... -and-pipeline-spill8 ^- h" \4 P8 h1 m- |+ k
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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: ~0 b! `& M! D! G! c5 JThe 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.9 d8 ]1 O: I& p6 A* _
, I' V4 q& ]: z, @0 d- MAn 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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/ V' ~% t$ n4 k; m' Z* IIn its announcement Nexen said it is addressing safety gaps in part with refresher training on workplace hazard identification, increased site supervision and safety inspections. ( R5 W# \5 q) l' B& x1 @
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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. " r* r2 P- h0 }9 {+ r6 ]" A. v
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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.* E6 h! D, m& k u' y8 r* T
+ \: w$ {! {5 h$ D) o+ hNexen 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."% T# v9 h5 L! Z6 o
# W$ P/ k; j8 @. y9 R5 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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3 }/ y0 X I$ M/ L: E, [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. $ U# @& C; w6 i' A
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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. , z2 S( `; G- A$ `. z
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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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