The utility whose gas pipeline exploded in San Bruno, Calif., a year ago, killing eight people, still doesn’t have a handle on whether other dangerous flaws exist in its natural gas transmission system that could lead to another disaster.
That’s what the National Transportation Safety Board concluded in its final report on the 2010 catastrophe. The 153-page report says that the utility, Pacific Gas and Electric Co., “still has a large percentage of assumed, unknown, or erroneous information for Line 132″ — the one that erupted — “and likely its other transmission pipelines as well.”
As the San Jose Mercury News reports, the safety board’s final report went further than the agency’s previous statements about the utility’s limited understanding of what other dangers may exist in its transmission system.
The utility’s president, Chris Johns, issued a statement saying the company “embraces the board’s recommendations” and is implementing them as part of its effort “to promote safer pipeline operations.”
But the Mercury News quoted Theo Theofanous, an engineering professor at University of California at Santa Barbara who served on a major federal panel assessing pipeline risks, as saying that the report’s conclusions about the utility are deeply troubling.
“The rather obvious implication is that as a company they suffer from lack of vigilant management and a culture of safety,” he said. Theofanous added that it is difficult for the average person to “know what to expect and how much to believe” about the utility’s statements about improving the safety of its gas lines.
The NTSB has blamed the disaster on “a litany of failures” by the utility dating back to 1956, when the utility failed to provide adequate quality oversight during the pipeline’s construction in the suburban community south of San Francisco. In the years that followed, the safety board said, the utility failed to correct the pipeline’s welding flaws and failed to develop an emergency response plan.
The safety board also has faulted federal and state officials for weak regulatory oversight.
STUART SILVERSTEIN
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