Intact marking of centrifugal compressor

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Indicators of a healthy centrifugal compressor: (I) Normal operation with good efficiency: 1. The equipment’s output meets the requirements for normal production or exceeds 90% of the capacity indicated on the nameplate； 2. The lubrication system, seal oil system, cooling system, gas sealing, balance pipes, etc., are in good working condition; the lubricating oil and seal oil used meet the specified requirements, and the temperatures of the sliding or rolling bearings are within the design specifications ； 3. The high-level tanks for lubricating oil and seal oil, the axial displacement control system, anti-surge measures, as well as pressure and flow control systems and oil/gas differential pressure control systems are all fully functional and effective ； The alarm and shutdown controls should be sensitive and accurate ； 4. It operates smoothly without any noise; the shaft displacement is within the design specifications, and the vibrations meet the standard requirements ； (II) The internal components are undamaged and meet the quality requirements: 1. The material used for the components meets the design specifications ； 2. The radial and axial runout of the rotor, the fit of various components during installation, and the wear limits must all comply with the regulations. (III) The unit should be clean, with all accessories available and in good working condition: 1. Dynamometers, vacuum gauges, tachometers, thermometers, sensors, vibration probes, and safety valves should be calibrated regularly to ensure they are sensitive and accurate ； The safety guards, coupling components, and turning gear are all available and in good working condition ； 2. All fastening screws are in good condition; the machine’s drainage and water release valves are functional and in proper working order ； 3. The foundation and base should be solid and intact; the anchor bolts as well as all connection bolts must be fully tightened, in proper alignment, and securely fastened ； 4. The import and export pipelines, valves, and associated piping are installed properly, with no blockages or leaks ； 5. The machine is clean, with no signs of hitting, pounding, scraping, or biting on its internal and external surfaces; the insulation and paint are intact and in good condition. (IV) The technical documents must be complete and accurate, and should include: 1. Equipment records that comply with the requirements of the equipment management system in petrochemical enterprises; 2. Records of regular condition monitoring ； 3. Regular lubricant analysis records ； 4. Equipment structure diagram and diagrams of vulnerable components.