Refinery Maintenance. A Refinery Process Unit In The Process Of Undergoing Maintenance, With Columns, Piping And A Crane Against A Blue Sky

KEYWORDS

access blue catwalk chemicals clean clouds columns construction crane curve danger distillation employees environment exchangers expansion gas gauges handrails hatch hazard health industrial industry lift load maintenance manufacturing market money oil operation operator pattern piping post pressure process profit protection relief repair replace safety sky stairs stairwell steps texas turnaround unit upgrade valves vessels walkway workplace