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Safety Issue #2

Safety Issue #2. Evaluation of In-Line Inspection Information. Significant Events Timeline for Olympic Pipeline In-Line Inspections. 1991 Magnetic Flux Tool 1994 Water Treatment Plant Construction 1996 Magnetic Flux Tool 1997 Caliper Tool. 1996 Magnetic Flux Tool Inspection Report.

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Safety Issue #2

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  1. Safety Issue #2 • Evaluation of In-Line Inspection Information

  2. Significant Events Timelinefor Olympic PipelineIn-Line Inspections • 1991 Magnetic Flux Tool • 1994 Water Treatment Plant Construction • 1996 Magnetic Flux Tool • 1997 Caliper Tool

  3. 1996 Magnetic Flux Tool Inspection Report

  4. 1997 Caliper Tool Inspection Report Near The Rupture • 0.45” sharp anomaly reported near the eventual rupture area

  5. 16” Olympic Pipeline

  6. 23% wall loss defect X 72” Waterline 16” Olympic Pipeline

  7. 16” Olympic Pipeline

  8. Reassessment Notes-July 97 • Did not inspect this location; • Tuboscope [magnetic flux tool company] possible mill/mechanical 23% (min risk) • Enduro [caliper tool company] .45 sharp (less than repairable) • Difficult area to access

  9. In-line pipeline inspection data along with excavation activity that occurred in 1993 and 1994 were sufficient to justify excavation and examination of the pipeline in the area of reported anomalies.

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