What are the main regulations for instrument inspections?

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What are the main regulations for instrument inspections? 1. On-site inspections must be equipped with a three-in-one alarm device as well as other personal protective equipment ； 2. All instrument and equipment that have been inspected during routine checks must have clear, visible, and correct tag numbers ； 3. Check for any air leaks in the air supply of the pneumatic control valve; inspect the exterior of the instrument to ensure that all components are present and undamaged, and verify that the valve’s adjustment range is normal and there are no abnormal noises ； 4. Check whether the seals on the temperature transmitter cover and junction box are worn out, whether there is any ground connection in the sensing elements, whether the bolts are present and secure, and whether there are any leaks in the primary connections ； 5. Pressure transmitter: Check whether the pressure transmitter and its pressure guiding pipes are properly sealed with no leaks, and whether the insulation and heating systems are functioning correctly ； 6. Check whether the pneumatic cut-off valve operates properly when opened and closed, and whether the valve position indicator functions correctly; also verify if there is any air leakage from the air supply source and if any abnormal noises are present ； 7. Check whether the flow meter is displaying properly, and whether the insulation and heating systems are in good condition (in winter), with no leaks ； 8. Check whether all the exterior components of the analyzer are present and undamaged: verify that the wiring terminals are properly secured, that the device is operating correctly, and that there are no alarms ； 9. The flange connection of the level transmitter is well-sealed with no leaks ； Indicates whether normal operation, heat retention, and heat tracing are functioning properly (in winter), with no leaks ； 10. Inspect the combustible gas alarm for complete and undamaged components; ensure its exterior is clean, check for power loss, and verify that the display is normal ； 11. Are the connections and wiring of the shaft system instruments on all major units secure? Are there any alarms? Are the trend fluctuations normal? ； 12. All types of instruments on site display accurate readings; the instrument equipment is clean, with no leaks or spills ； 13. In accordance with the inspection plan, carry out instrument inspections on time and at the designated locations (areas) in a thorough manner ； 14. The instrumentation and equipment inspected during routine checks must be kept clean and tidy. 15. During these inspections, it is necessary to check whether the instrumentation and equipment, especially control valves, instrument wiring, and instruments installed directly on pipelines, are subject to any risks such as vibration. 16. Inspections of standby equipment should be carried out daily (such as the standby main fans for catalytic units, the standby reciprocating compressors for atmospheric/ vacuum distillation/hydrogen production/continuous reforming/diesel hydrogenation/hydroprocessing units, the standby fans for sulfur recovery units, and the standby screw compressors for atmospheric/ vacuum distillation/gas holders, etc.). 17. The contents of inspections must be carried out in strict accordance with the requirements of the \"Inspection Rules,\" but are not limited to those rules. Each maintenance unit may, based on the specific operating conditions of the instruments and equipment, add more items and frequency to inspections. Special attention should be paid to inspecting those instruments that are located in critical areas or are prone to failures, so as to ensure that all instruments function properly and that the installation operates safely. 18. All instrument and equipment that have been inspected during routine checks should have clear, obvious, and correct tag numbers, including any necessary descriptions of those tag numbers. 19. Fill in the inspection records carefully in accordance with the contents of the inspection record form and the requirements of these Inspection Rules.