HOUSTON, Dec 8 (Reuters) - Valero Energy Corp (VLO.N) on Wednesday was increasing production on the restarting, gasoline-producing fluidic catalytic cracker (FCC) at its 195,000-barrel-per-day (bpd) McKee refinery in Sunray, Texas, sources familiar with plant operations said. The 55,000-bpd FCC and other units were knocked out of production following a partial power outage on Sunday, the sources said. A Valero spokesperson did not reply to a request for comment. In addition to the FCC, a 34,000-bpd gasoline hydrotreater, 15,000-bpd naphtha hydrotreater and two sulfur recovery units were also restarting on Wednesday, the sources said.The power outage was caused by high winds around the Texas Panhandle refinery, according to a notice the company filed with the Texas Commission on Environmental Quality.