The following is a list of pipeline accidents in the United States in 2011. It is one of several lists of U.S. pipeline accidents. See also list of natural gas and oil production accidents in the United States. Incidents On January 11, personnel from Millennium Pipeline noticed that a gas transmission pipeline was leaking in Tioga County, New York. This 30-inch diameter pipeline was built in 2008. A pinhole in a rejected girth weld was found to be the cause of the failure. It appears that during the course of the construction project for the line, the subject pipe section was inadvertently picked up and subsequently installed in the pipeline. PHMSA ordered testing of this pipeline for similar flaws. A 12-inch cast iron gas main leaking in Philadelphia exploded, killing a repair crew member and injuring six others on January 18. Multiple gas pressure regulators failed, and caused a gas pressure surge in Fairport Harbor, Ohio, on January 24, causing gas fires in 11 houses, and one apartment. 150 gas appliances were damaged or destroyed, but there were no injuries. Gas company Dominion East Ohio says it found fluids and debris in a failed regulator. A year after the explosion, the Public Utilities Commission of Ohio recommended a $500,000 fine for Dominion. Five people were killed, and eight houses were destroyed, in a gas explosion and fire in Allentown, Pennsylvania on February 9. The NTSB had warned UGI about cast iron gas mains needing replacement after the 1990 gas explosion in that city. Between 1976 and the date of the letter, July 10, 1992, two more gas explosions occurred. Three people were killed, 23 injured and 11 houses were destroyed or damaged in those explosions. UGI was cited in 2012 for several safety violations, including a lack of valves on their gas system. Late on February 10, a Tennessee Gas Pipeline 36-inch gas transmission pipeline exploded and burned near Lisbon, Ohio. No injuries resulted. The cause was from stress on a girth weld on the pipeline. A failure on another girth weld on the pipeline system led to a PHMSA Consent Agreement. Early on February 24, a pipeline near Texas City, Texas ruptured, sending up to of gasoline into Bayou Pierre. On March 1, a Tennessee Gas Pipeline gas transmission pipeline failed near Cumberland, Ohio. A material or weld defect was the cause. Early on March 17, a 20-inch steel