San Bruno Pipeline Explosion (2010)
A 30-inch PG&E natural gas pipeline exploded in San Bruno, California, killing 8 people, destroying 38 homes, and injuring 51. The blast created a fireball visible for miles and left a crater in a residential neighborhood 2 miles from San Francisco International Airport.
NTSB blamed PG&E's inadequate quality control during 1956 pipe installation and poor integrity management that failed to detect defective welds.
PG&E paid over $220 million in property damage, faced criminal prosecution, and received $1.6 billion in penalties. California regulators overhauled pipeline safety requirements; PG&E eventually filed bankruptcy in 2019 after subsequent wildfire disasters revealed continued safety failures.
Like Bristol, San Bruno exposed how utilities defer infrastructure maintenance for decades while regulators fail to enforce compliance—until people die.
