PG&E Missing 8 Percent Of Gas Line Safety Records
SAN FRANCISCO (AP) -- A California utility under fire for a deadly natural gas explosion near San Francisco is missing 8 percent of key safety records required for high-pressure lines coursing through the some of the state's most densely populated areas, the company said Tuesday after an exhaustive document search.
State regulators announced a proposal almost immediately to force Pacific Gas & Electric Co. to provide detailed safety updates, including information about how the utility was prioritizing work on high-risk lines during the next four years.
The California Public Utilities Commission also was expected to decide as soon as Wednesday whether PG&E should have to conduct expensive, time-consuming tests on lines for which records could not be found.
The testing could be required unless PG&E can otherwise prove pressure levels were safe.
The Sept. 9 blast in San Bruno sparked a massive fireball that killed eight people and destroyed three dozen homes in the quiet suburb overlooking the San Francisco Bay.
PG&E released its results after staging a massive operation over the past two weeks, with employees sorting through mountains of paper records inside a hulking concert venue the company rented for the job.
Company engineers, estimators, mappers, information technology specialists and managers -- as well as a number of outside contractors -- went through more than 1.25 million individual gas transmission records hauled out from branch offices and storage facilities.
Ten percent of aging lines installed before 1961 were missing test records or other documents showing their historical pressure levels, as were 3 percent of the lines laid from 1961 to 1970, PG&E found.
"While we have made good progress on our records validation, we are not satisfied with the results to date and will continue to search for and review our files for additional pressure test records and provide regular updates on our efforts," PG&E president Chris Johns said in a statement.
PG&E spokesman Joe Molica said the company planned to pressure-test or replace 150 miles of pipe that is either as old as the San Bruno line or has other similar characteristics. The work will be carried out across 24 pipelines, he said, including on a segment of the ruptured line.
The company also will carry out rigorous inspections on another 435 miles of pipe, in which robotic devices called "smart pigs" will travel through pipelines to search for corrosion, dents and other problems, he said.
Federal investigators have been calling into question PG&E's record-keeping since December, when the National Transportation Safety Board first revealed the company's records about the 1956-era pipe were wrong.
The pipeline was riddled with seams, defects and inferior welds, although PG&E paperwork inaccurately identified the pipe as being seamless, which is considered safer.
In January, the state commission directed PG&E and other California utilities to produce records documenting the safety of all their lines.
State rules require pipeline operators to keep up-to-date records about pressure tests and to document any leaks to ensure the pipes don't pose any risk to surrounding communities.
Consumer advocates said customers deserved to know more details about where the lines with no records were located, and whether the company had been operating them safely.
"Ninety-two percent sounds pretty good unless you happen to live over the 8 percent that they don't have records for," said Mark Toney, executive director of San Francisco-based The Utility Reform Network. "I think that people are going to be interested in knowing where that 8 percent is located."
Rep. Jackie Speier, a California Democrat who represents the San Bruno area, said she was pleased at the advances since the explosion, but questioned PG&E's reliance on documents detailing historical pressure levels. She said that would not necessarily identify improper welds or shoddy work.
Test records were missing for 31 percent of the lines that were installed before 1961.
"If you're just saying that you have five years of records showing what the pressure was over time, I don't know whether that means the level is safe," said Speier. "We now know that San Bruno pipe was seamed, had a defective weld and probably other problems."
The commission is likely to vote on the proposed decision requiring PG&E to send out more frequent safety updates next month.
(Copyright 2011 by The Associated Press. All Rights Reserved.)
