* Pipeline safety fines would more than double to $2.5 mln
* Several pipeline accidents show need to boost safety
* House of Reps to vote on offshore drilling bills
By Tom Doggett
WASHINGTON, May 5 Reckless operators of U.S. petroleum and natural gas pipelines would pay higher fines under bipartisan safety legislation passed on Thursday by the Senate Commerce Committee.
The bill is in response to several pipeline accidents in the last year that killed more than a dozen people, destroyed homes and polluted land and water.
"More needs to be done to strengthen oversight and address safety vulnerabilities," said Senator Jay Rockefeller, the committee's chairman.
The legislation would raise fines from $100,000 per day to $250,000, and from $1 million for a series of pipeline violations to $2.5 million.
The bill also requires automatic shut-off valves to prevent oil spills and natural gas explosions, and would authorize more federal pipeline safety inspectors.
The regulations would be enforced by the Transportation Department's Pipeline and Hazardous Materials Safety Administration, which the bill reauthorizes through 2014.
The measure must still pass the full Senate and then clear the House of Representatives, before it could be signed in to law by President Barack Obama.
This is the first of two energy bills being acted on in Congress on Thursday. The House is scheduled to vote later in the day on legislation to reinstate drilling opportunities off the coast of Virginia and the Gulf of Mexico that were pulled by the Obama administration after the BP (BP.L) oil spill.
Democrats were blocked from offering amendments to the House bill that would have stripped billions of dollars in federal tax breaks from big oil companies.
The House will vote next week on separate legislation to set a 60-day deadline for the Interior Department to decide on new offshore drilling permits.
The White House said on Thursday it opposed both House bills, because they would undermine drilling safety regulations imposed after last summer's oil spill in the Gulf of Mexico.
The Interstate Natural Gas Association of America trade group that lobbies for major gas pipeline companies urged Congress to pass the pipeline bill, saying it would result in a safer fuel transportation system nationwide.
The United States has about 2.5 million miles (4 million km) of pipelines that move oil, natural gas and other hazardous liquids. The death toll from pipeline safety accidents rose from nine in 2008 to 13 in 2009 and reached 22 last year.
Most recently, a natural gas explosion on a pipeline operated by UGI Utilities (UGI.N) killed five people this past February in Allentown, Pennsylvania.
A PG&E Corp (PCG.N) natural gas line exploded in a San Francisco suburb last September, killing eight people and destroying 37 homes.
Several leaks last year on the Enbridge (ENB.TO)(ENB.N) pipeline system collectively spilled thousands of barrels of oil in the Midwest. (Editing by Dale Hudson)