DIARY-U.S. refinery operations-Marathon Galveston Bay, Texas refinery reports SRU upset

July 26 (Reuters) - The following is a list of refinery incidents reported in the United States on July 26: * Shell Convent refinery plans spring 2018 work on HCU –sources * Exxon Baton Rouge 2016 blast began with stuck valve -U.S. board * Marathon Galveston Bay, Texas refinery reports SRU upset * Phillips 66 reports unplanned flaring, breakdown at Wilmington, CA, refinery