What precautions should be taken during a major overhaul?
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What should be paid attention to in refining and chemical processing within an integrated refinery-and-chemicals plant before, during, and after maintenance? If going for an inspection, what information is needed?
This topic is too broad! :L Do you mean maintenance plan control, quality control, or safety management? People like us ordinary folks can’t answer: L
It’s probably outside the door. Hahaha
It can be classified by people, machines, materials, methods, and environment, or by aspects such as safety, quality, and schedule. I. Process aspects ； Clarify the maintenance tasks and define the main activities and timelines (including key steps such as shutting down the system for material removal, handing over the system for maintenance, the maintenance process itself, and restarting the system with materials loaded). Preparation of process plans, blind flange management, replacement of chemical additives, technical renovation construction, etc ； II. Safety, safety, safety – it is everything; therefore, risk identification for all operations, development of preventive measures, and strict approval processes for carrying out these operations are essential. III. Equipment aspects: spare parts preparation, inspection of pressure vessels and pipelines, contact with manufacturers of large-scale units and key equipment, schedule planning, etc ； IV. Quality control, third-party oversight, multi-party inspection ； V. Staff Training
You must be extremely careful with what you hear, think, and see; the slightest carelessness can lead to financial losses at the very least, or even the destruction of one’s family at the worst. Maintenance is not scary; the preparations before shutting down the machine must be thorough, meticulous, comprehensive, professional, and scientific. When shutting it down, one needs to be both bold and careful.