The explosion that took the lives of five people and destroyed half a block in Allentown, Pa., this week appears to be the latest in a recent series of tragedies around the U.S. linked to leaks of natural gas.
In Allentown, authorities say they have not yet determined the cause of the Wednesday night blast, but they acknowledged that the ensuing fire probably was fueled by gas, apparently from a 12-inch underground main that lacked shut-off valves.
The Allentown disaster follows the September gas line rupture in San Bruno, Calif., that killed eight and destroyed dozens of homes. Following that blast, two smaller gas explosions in December and January killed a total of three people in Wayne, Mich., and in Philadelphia.
As in the San Bruno blast, attention in Allentown has quickly shifted to those charged with regulating the gas companies.
In Pennsylvania, individual companies are supposed to take the lead in inspecting their networks, according to the Pocono Record, with the Gas Safety Division of the state Public Utility Commission then keeping tabs on those inspections. However, the division has only nine inspectors on staff to keep tabs on more than 12,000 miles of pipelines, which critics say falls far short of what is needed.
The president of UGI Utilities, the gas company in Allentown, said his company had carried out a routine inspection of the neighborhood a week prior to the explosion, and found nothing abnormal.
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