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Accident Report Detail

Accident: 201510245 - Three Employees Killed, Two Burned In Explosion And Fire

Accident: 201510245 -- Report ID: 0950651 -- Event Date: 11/09/2004
InspectionOpen DateSICEstablishment Name
12567825011/09/20041622Matamoros Pipelines Inc

At approximately 1:22 p.m. on November 9, 2004, an explosion and fire occurred when a Mountain Cascade, Incorporated excavator struck a 10-inch Kinder Morgan Energy Partners petroleum line. The San Ramon Valley Transmission Improvement Project (East Bay Municipal Utility District's domestic water main) required excavation of a 15-foot deep trench, setting of the ground support systems, and placement of 72-inch by 40-foot-long water line segments with fit-up and welding of the water line. The 10-inch petroleum line was carrying gasoline at the time of penetration, and was estimated to be at a pressure of 974 psi. When the line was punctured, the pressurized fuel was ignited by the welding operations. As a result of the excavator's puncture of the petroleum line, Employees #1 through #3 were killed and Employees #4 and #5 sustained serious burns and were hospitalized.

Keywords: burn, fire, struck against, trench, welding, explosion, excavator, water pipe, gasoline, puncture
Accident Details
End Use Proj Type Proj Cost Stories NonBldgHt Fatality
Pipeline New project or new addition $20,000,000 and over X

Employee Details
Employee # Inspection Age Sex Degree Nature Occupation Construction
1 125678250 Hospitalized injury Burn/Scald(Heat) Plumbers, pipefitters and steamfitters FallDist:
FallHt:
Cause: Excavation
FatCause: Fire/explosion
2 125678250 Fatality Concussion Plumbers, pipefitters and steamfitters FallDist:
FallHt:
Cause: Excavation
FatCause: Fire/explosion
3 125678250 Fatality Concussion Plumbers, pipefitters and steamfitters FallDist:
FallHt:
Cause: Excavation
FatCause: Fire/explosion
4 125678250 Fatality Concussion Plumbers, pipefitters and steamfitters FallDist:
FallHt:
Cause: Excavation
FatCause: Fire/explosion
5 125678250 Hospitalized injury Burn/Scald(Heat) Plumbers, pipefitters and steamfitters FallDist:
FallHt:
Cause: Excavation
FatCause: Fire/explosion

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