A modification made in 1956 to a pipeline built in the 1940s would ultimately fail costing 8 people their lives in 2010. We look at what went wrong with PG&Es gas pipeline in San Bruno, California.
With John Chidgey.
Investigation and Reports:

• NTSB Report (PDF)
• Independent Review Panel Report on San Bruno Pipeline Explosion

Technical Links:

• Material Fatigue
• GIS (Geographic Information System)
• Pup
• API 5L X42 Steel Pipe Specification in PSL1, PSL2 and Sour Service

Links of Potential Interest:

• Pacific Gas and Electric Company
• San Bruno Pipeline Explosion
• Memorial for Anniversary of San Bruno Explosion
• San Bruno Pipeline Explosion
• Death Toll In San Bruno Climbs To 8
• Five Years After Deadly San Bruno Explosion
• PG&E Gets Maximum Sentence For San Bruno Crimes
• Crestmoor Neighborhood
• PG&E emerges from bankruptcy
• PG&E Completes Natural Gas Pipeline Safety Report
• PG&E Falsified Gas Pipeline Safety Records

Legal Links:

• Right Of Way
• A Legal Introduction to Easements
• California Law Study into Soverign Immunity (PDF)
• Cost Allocation in Public Utility Relocation in California

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Episode Gold Producer: 'r'.
Episode Silver Producers: Mitch Biegler, John Whitlow, Joseph Antonio, Kevin Koch, Oliver Steele and Shane O'Neill.

With thanks to John for the topic suggestion.