U.S. Federal Reserve Chairman Ben Bernanke said on Friday congressional proposals to audit the Fed and strip it of regulatory powers as part of post-crisis reforms could damage prospects for economic recovery and financial stability going forward.

These measures are very much out of step with the global consensus on the appropriate role of central banks, and they would seriously impair the prospects for economic and financial stability in the United States, Bernanke wrote in a column posted on the Washington Post's website.

The rare newspaper column by a Fed chairman comes shortly before Bernanke testifies before a Senate panel on his renomination to serve a second four-year term at the helm of the central bank and answers a series of steps on Capitol Hill that could diminish the central bank's role.

Lawmakers are angry with the Fed over its emergency bailouts of major financial firms and its failure to prevent the contagion of mortgage delinquencies that crashed the financial system. A proposal to audit the Fed's monetary policy deliberations won a committee vote recently over the objections of House Financial Services Committee Chairman Barney Frank.

Frank's Senate counterpart, Banking Committee Chairman Christopher Dodd, is himself the author of a proposal to consign the Fed solely to making decisions about setting benchmark interest rates.

Bernanke, in his column, conceded the Fed had missed some of the riskiest behavior in the lead up to the crisis. But he said the Fed had helped avoid an even more damaging economic meltdown and has stepped up its policing of the financial system.

The Fed played a major part in arresting the crisis, and we should be seeking to preserve, not degrade, the institution's ability to foster financial stability and to promote economic recovery without inflation, he said.

(Reporting by Mark Felsenthal; Editing Bernard Orr)

Ben Bernanke