Qilu Petrochemical Plastic Factory's styrene plant in this fall's device maintenance process, through the focus on maintenance and safety and environmental protection of the key aspects of control, the entire process of supervision and inspection, to ensure that the device parking and maintenance process safety and environmental protection without accidents.
During the parking of the device, the workshop resolutely eliminates the indiscriminate discharge of chemical materials. It is responsible for the material recovery in the towers, containers, heat exchangers, pumps and other facilities, and is responsible for the strict inspection and evaluation to ensure that all the materials that can be recovered can be recovered. It has been recycled to reduce the "three wastes" emissions. The second is to require the operator to drain the dirty oil, residual liquid, etc. generated during the parking process into the open ditch so as to take care of it. The third is the "limited time recovery" of the ground oil, to prevent it from entering the rainwater drainage system. When clearing a small amount of material that remains in the pipelines and valves, they use small containers to pick up and avoid causing pollution after they are discharged directly to the ground, open ditch and rain row. They confirmed whether the materials were empty before the cooking of towers, cans and other equipment, and were washed with water and then cooked to ensure that the discharge of waste gas was up to standard. The industrial waste water from the on-site cooking and washing process was all introduced into the wastewater stripper (T901). At the same time, in the process of stopping and purging the device, the workshop adopts a small-volume purge method and allows the purged gas phase to enter the flare system to burn, ensuring the environmental protection of the gas.
During the inspection and repair period, the workshop carried out the “I am a safety officer today” activity to improve the safety awareness of employees and ensure the safety of maintenance. After the inlets on various types of towers were opened, workers immediately blocked the openings with iron wire and set up warning signs at the site to prevent accidental accidents such as poisoning and asphyxia. The workshop also joined with the plant's safety and environmental protection department to establish a “HSE Overhaul Special Action Team” consisting of more than 30 people, to conduct “business” training in advance, and to continuously inspect the maintenance safety and environmental protection conditions on a daily basis to ensure that no accidents occurred. The current installation has been successfully Enter the drive phase.

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