A Case Study of Petrochemical Plants’ Annual Maintenance Process Analysis

• Main Authors: Chung-Wen Ke, 柯忠文
• Other Authors: Nai-Hsin Pan
• Format: Others
• Language: zh-TW
• Published: 2016
• Online Access: http://ndltd.ncl.edu.tw/handle/54473754590479215914

碩士 === 國立雲林科技大學 === 營建工程系 === 104 === The petrochemical plants have faced disasters frequently in recent years for equipment aging and environmental corrosion and erosion of internal raw materials. The increase of productive capacity and debottlenecking or betterment works of equipment result in the requirement for equipment renewal. In process requirements and products, diversified and a lot of hazardous substances are stored in the field, a light mistake in the construction when the plant is in operation is likely to cause work safety disaster and chain reaction. Considering the safety and productive capacity, the equipment replacement is usually arranged in the period of annual maintenance. This study analyzed the tower tank renewal operation during the annual maintenance of a petrochemical plant, and discussed the schedule planning and execution at common work site coordinating all schedules. This study also discussed individual operation to compare the schedule planning with the actual construction and to analyze the conditions before and after the execution of contract. The analysis results and suggestions can serve as reference for the future planning and undertaking of such cases. It also described the construction essentials, classified the operating environments, and sorted and improved the required documents and construction deficiencies. In addition, the feasibility of other engineering was discussed for the engineering staff's reference during annual maintenance. The results showed that the annual maintenance operation has high uncertainty. The contract item and quantity are highly variable; the damage (quantity of spreading welds) and coordination with field situation (modify crane specification timely) are known only in stoppage. There are two deficiencies in execution, by execution as per planning and proper response, so that the lagging items can catch up with the schedule, the construction is completed as scheduled. In the discussion about other engineering, other engineering are extended from the advantages of the new construction method, as long as the operating conditions are met, a working face and operating time can be increased simultaneously. Keywords: petrochemical plant; annual maintenance; tower tank