Hi, I am a welder with 9 years of experience with a construction company. I recently upgrade my welding qualification to (http://www.weldtechtraining.com/welding-courses/specialized-courses/weld-quality-control-inspection ) welding quality control from a reputed welding school. I would like to work in an oil rig with my upgraded qualification (i'm not sure of it). Will this qualification be beneficial in an oil rig? And I know working in an oil rig is physically demanding and what are the fitness criteria that I need to pass to work in an oil rig?