Spectra EnergyCorp is still responding to an April 29 on the systemin Pennsylvania while federal and state officials investigate the site.
As of May 2, Spectra said, air quality monitoring in thevicinity of the Delmont, Pa., explosion had been completed, but soil, surfacewater and groundwater testing was ongoing. The company said it did not knowwhen throughput would resume at the nearby Delmont compressor station but notedthat it would remain out of commission through May 6.
Although Spectra declared it a force majeure event and therewere surges inNortheast gas spot market prices, Spectra said the transmission line incidenthad not compromised customers' access to supply in the region.
"While we are sensitive to our shippers'responsibilities and can't speak to how they are meeting their customers'needs, we are unaware of any downstream reliability issues due to our outage,"Spectra said in a May 2 statement.
Nine homes were evacuated and one person was reportedinjured as a result of the explosion and fire on the 30-inch Texas Easternline, according to the company.
The U.S. Pipeline and Hazardous Materials SafetyAdministration has sent an inspector to the site to investigate the incidentand determine a cause, and the Pennsylvania Department of EnvironmentalProtection has also been involved in the incident response.
The 9,000-mile Texas Eastern transmission system had 29incidents over 2006-2015, only one of which involved any injuries, according toPHMSA. Three of the incidents took place in Pennsylvania, including one inApril 2006 in Delmont stemming from a ruptured or leaking seal. A majority ofthe incidents took place offshore.
The two most recent onshore incidents stemmed fromconstruction, installation or fabrication issues, according to PHMSA.
Among the 26 companies operating between 5,000 miles and15,000 miles of gas transmission, gas gathering or hazardous-liquids pipelinesunder PHMSA's purview, Texas Eastern has had fewer incidents than 16 operatorsover the past decade, according to the administration.