April 21 (Reuters) - Federal Reserve Governor Christopher Waller on Tuesday laid out his vision for revamping the operational structure of the Federal Reserve system's 12 regional banks, calling for consolidation of key business functions like human resources, finance, procurement and technology rather than leaving them under the local direction of each bank.

"We need to do more to centralize our operations into national lines of business and move away from having individual Reserve Banks managing operational infrastructure from a Bank mindset instead of a System mindset," Waller said in remarks prepared for an appearance at the Brookings Institution in Washington.

Waller did not comment on the outlook for the economy or interest rates with officials now in the blackout period ahead of next week's monetary policy meeting.