DIARY-U.S. refinery operations-Exxon's Beaumont refinery HCU back at full output

July 17 (Reuters) - The following is a list of refinery incidents reported in the United States on July 14: * Exxon's Beaumont, Texas refinery HCU running at full production -sources * Total's Port Arthur, Texas, reformer to restart early next week -sources * PES reports alkylation unit startup at Phila. refinery * Citgo Corpus Christi, Texas, refinery east plant reports FCCU shutdown