* Serious concern oil prices hurting economy
* Prepared to consider "all tools at disposal"
* US officials play down SPR release, but calls continue
* OPEC to meet in Vienna on June 8, seen unlikely to act
* IEA statement: iea.org/index_info.asp?id=1952 (Updates with White House comment, paragraph 13)
By Muriel Boselli and Richard Cowan
PARIS/WASHINGTON, May 19 (Reuters) - The West's energy watchdog urged oil producers to protect the global economy by boosting supply to cut fuel costs, and appeared to suggest its members could release emergency stockpiles if OPEC failed to act.
"The governing board urges action from producers that will help avoid the negative global economic consequences which a further sharp market tightening could cause, and welcomes commitments to increase supply," the International Energy Agency, or IEA, said after a governing board meeting on Thursday.
The statement comes just weeks ahead of OPEC's June 8 meeting and a day after price hawk Iran said its hardline President Mahmoud Ahmadinejad would represent Tehran at OPEC as Iran's caretaker oil minister.
The 12-member Organization of the Petroleum Exporting Countries says world supplies are adequate.
"The IEA governing board expressed serious concern that there are growing signs that the rise in oil prices since September is affecting the economic recovery," the statement said.
The IEA said it stood ready to work with producers but added: "In this constructive spirit, we are prepared to consider using all tools that are at the disposal of IEA member countries."
The 28-member IEA oversees some 1.5 billion barrels of government-held oil inventories that can be released in the event of an emergency outage.
The loss of about 1.2 million bpd of Libyan exports in February is well short of the volumes that would normally trigger an IEA emergency release, but there has been speculation that the United States could tap government stockpiles if things get worse.
The Paris-based IEA could not give guidance on whether or not its statement was referring to a possible emergency release.
But oil prices CLc1 fell more than $1 a barrel on Thursday as analysts said consumers seemed to be getting frustrated with what they see of lack of action by OPEC.
"This looks like a coded message to OPEC, a shot across the bows before the June meeting," said Bill Farren-Price of Petroleum Policy Intelligency.
President Barack Obama said in March a significant supply disruption or shift in the market could push him to use the reserves and that the administration had a plan that could be set in motion in a few days, not weeks, if needed.
The White House said on Thursday tapping the 730 million barrel Strategic Petroleum Reserve remained a possibility. "Tapping the SPR continues to be one of the options on the table," said spokesman Clark Stevens said.
But Interior Secretary Ken Salazar seemed to play down the likelihood of tapping the reserve now.
"Our position ... on the SPR is that it won't have significant impact on the price of gasoline," Salazar told reporters. He said historically the reserve has not been released to tackle high gasoline prices, but rather supply shortages.
Jeff Bingaman, the chair of the Senate Energy Committee, also said through a spokesman there was no need for a release in the short-term because U.S. supplies are ample. Oil stockpiles in the United States are hovering at a two-year high.
But calls by some U.S. lawmakers to use the reserve, including from Obama's Democratic party, continue as petroleum prices remain stubbornly high.
The IEA normally does not comment on oil producers' policies.
"It is quite rare that the IEA goes out directly to give suggestions to OPEC," said Christin Tuxen at Danske Markets.
"It suggests the IEA is worried that we haven't seen OPEC increasing supply... Libyan production has basically come to a halt and Saudi Arabia has been very slow to increase supply," she added.
As global demand for oil increases seasonally from May to August, IEA members said there was a clear and urgent need for additional supplies to be made to refiners on a "more competitive basis."
Oil prices have rallied sharply since the beginning of the year on unrest in North Africa and the Middle East, reaching near $130 per barrel. They corrected sharply in early May and Brent crude LCOc1 is now valued at $112 a barrel with signs that high prices are rationing demand in the West.
However many analysts, including from big banks like Goldman Sachs, Barclays Capital and Deutsche Bank, said they expected prices to return to or exceed recent highs at the end of 2011 due to tightening supplies. [ID:nLDE74513V]
OPEC has held its official output targets steady even as prices surged, saying supply was sufficient. Its biggest producer Saudi Arabia lifted output earlier in the year but has since cut back again, citing poor demand.
A delegate from one of OPEC's Gulf countries earlier this month raised the possibility of increasing OPEC's output targets to help lower prices as well as to bring official allocations back in to line with actual supply.
Some in OPEC, such as Iran and Venezuela, are likely to disagree. The attendance of Ahmadinejad at the June meeting has strengthened analysts' view the group is unlikely to act. [ID:nHAF829211] (Reporting by Muriel Boselli and Zaida Espana, and Richard Cowan, Timothy Gardner, Jeff Mason and Tom Doggett in Washington, writing by Richard Mably; editing by Anthony Barker and Jonathan Leff)