In the overhaul site, Qilu petrochemical operation and maintenance center has such a female guardian team. They bear in mind the safety responsibility, "strict word as the top, dare to grasp dare to tube, stare at the scene, do not let go of any details and signs, find hidden dangers, timely urge the construction personnel to rectify. Because they maintain the jurisdiction has a running device, and a maintenance device. They not only participate in the operation and maintenance of the production device, but also take the initiative to enter the maintenance site during the rest day on duty, and do a good job of monitoring to ensure the safety of the maintenance operation.