September, 2010

This is a repeating event

201009SepAll DayPG&E San Bruno Pipeline Explosion 2010Pacific Gas & Electric (PG&E) San Bruno (US-CA)Lessons:Asset integrity,Emergency Preparedness,Process Knowledge,Risk AssessmentIndustry:PipelinesCountry:United StatesLanguage:ENLoC:Deterioration Origin: NTSB Incident:EXPLOSIONHazards:FlammableImpact:HUMAN (Offsite Fatalities)Effects:1-10 FatalitiesMaterial:Methane


On September 9, 2010, about 6:11 p.m. Pacific daylight time, a 30-inch-diameter segment of an intrastate natural gas transmission pipeline known as Line 132, owned and operated by the Pacific Gas and Electric Company, ruptured in a residential area in San Bruno, California. The rupture occurred at mile point 39.28 of Line 132, at the intersection of Earl Avenue and Glenview Drive.

The rupture produced a crater about 72 feet long by 26 feet wide. The section of pipe that ruptured, which was about 28 feet long and weighed about 3,000 pounds, was found 100 feet south of the crater. The Pacific Gas and Electric Company estimated that 47.6 million standard cubic feet of natural gas was released. The released natural gas ignited, resulting in a fire that destroyed 38 homes and damaged 70. Eight people were killed, many were injured, and many more were evacuated from the area.

Image Credit: NTSB


NTSBNational Transportation Safety Board