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How to ensure the proper safety management of equipment in summer: With summer approaching, temperatures are rising and thunderstorms are starting to occur, which poses serious challenges to the safety management of special equipment during this season. How can we ensure the proper safety management of such equipment, so that it can operate safely and steadily throughout the summer? Below are some of our experiences in managing equipment in the workshop during the summer: I. Special static equipment: 1. Coordinate with the Production Planning Department to conduct a thorough inspection and measurement of the static grounding wires for the special static equipment in the workshop; those wires that do not meet the standards or have excessive resistance values are repaired until the static grounding resistance reaches the required level. 2. Strengthen the inspection of special equipment, and conduct thorough checks on various parameters such as liquid level, pressure, and temperature to prevent occurrences of overheating, overpressure, and tank overflow. 3. Operators of various positions should increase the frequency of inspections on key high-temperature and high-pressure equipment. Such as reaction two-reactor systems, fractionation towers, stabilization four-tower systems, etc ； The workshop equipment operator must measure the temperature of the reactor system at least twice a month and keep records of these measurements; any abnormal temperature readings should be reported promptly to the workshop and the relevant higher-level departments. 4. Special equipment accessories such as safety valves, pressure gauges, and level gauges must be complete; those that are malfunctioning or damaged should be calibrated or replaced to ensure their proper functioning. 5. Key special equipment such as waste heat boilers, slurry steam generators, and forced-circulation drum boilers must be operated in strict accordance with their respective boiler operation procedures. It is necessary to ensure the correct liquid level in the boiler (when checking the liquid level, the method specified in the boiler operation procedures for using the level gauge must be followed to determine the accurate liquid level); operating the boiler without a proper liquid level must be avoided at all costs. Moreover, it is not allowed to add a large amount of water suddenly when the boiler is dry – adding water in large quantities abruptly causes it to vaporize rapidly, and when water vaporizes, its volume increases by 1,700 times, which can lead to excessive pressure in the boiler and resulting in an explosion. Before starting the external heat exchanger, it is necessary to first activate B101 to ensure that there is water inside the tubes of the external heat exchanger and that the level of liquid in the forced circulation drum is appropriate. Waste heat boilers and slurry steam generators must be operated and filled with water in strict accordance with their respective boiler operating procedures. When there is insufficient water, it is necessary to promptly contact the personnel responsible for measuring levels, check the level indicated on the glass gauges on site, and ask the thermal power plant to increase the water supply to ensure an adequate amount of water is available for the boilers. 6. The liquid ammonia tank is out of use during the summer; without approval from the workshop, it is strictly prohibited for any crew member to fill the tank with liquid ammonia on their own. II: Special mobile equipment 1. Strengthen the management of special mobile equipment to ensure that backup equipment can take over in case of failures in the operating equipment. The workshop equipment operator periodically performs trial starts on the standby pumps. 2. Management of special pump-type rotating equipment: During the day shift, pump operators are responsible for the operation and maintenance of the main pumps. Before 10:00, each standby pump is rotated manually; pumps with low oil levels in their bearing housings have their oil levels topped up, and the cooling water for the mechanical seals is checked. Any issues detected are promptly reported to the maintenance team for repair. If abnormal noises are heard from the pumps or motors, it is necessary to report this immediately to the workshop so that prompt action can be taken ； The daily cleaning of mechanical pumps is the responsibility of the pump operator ； The lard storage area and the pumps used in the wastewater stripping process fall under the responsibility of this position; the same requirements apply ； During the middle-night shift, the main unit pumps are under the responsibility of the teams in charge of reaction, distillation, stabilization, and the third unit, with the same requirements applying. 3. The workshop equipment operator conducts a thorough inspection of all special-type slide valves on a daily basis. The inspection includes checking the oil level in the slide valve cylinders, ensuring that the steam used for cleaning the slideways and valve rods flows properly, verifying that there is no leakage of steam from the valve rod packing, checking whether the pressure indicator of the cylinders is normal, and assessing whether there are any abnormalities in the sound of the oil pumps. The personnel responsible for inspecting the reaction units must also conduct inspections of the slide valves in accordance with the workshop’s inspection procedures, and keep accurate records of these inspections. Whenever any issues are detected, they should promptly contact the maintenance team for repairs and report the situation to the workshop or the on-duty staff. 4. The shift supervisor in the workshop conducts two comprehensive inspections each day, in the morning and afternoon, of large-scale units such as the main fan, booster pump, steam turbine unit, and reciprocating compressor. The inspection includes checking the oil temperature, bearing temperatures, circulating water temperature, steam pressure, seal steam pressure, outlet pressures at various stages of the compressor, outlet pressure and flow rate of the main air stream, the liquid level in the oil tank, whether the operating sounds of the units are normal, whether the main oil pump and feed water pump are functioning properly, whether the backup oil pump and feed water pump are ready for use, and whether the main extractor is operating correctly. Additionally, the condition of rotating these backup units is checked, with all findings accurately recorded in the patrol log. 6. The inspection tasks of the operators for the three machines are the same as those of the process supervisors for these machines, and the standby units are rotated regularly. The specific rules for cranking are as follows: when cranking the main fan, booster pump, and turbine auxiliary oil pumps, it is specified that the even-numbered bars should be on top for even-numbered units, and the odd-numbered bars should be on top for odd-numbered units ； These two cranking times are before 10:00 ； When turning a reciprocating compressor, use the time indicated on the coupling as a reference. 7. Lubrication management regulations for spare equipment of three units: The spare main fans and boosters have their auxiliary oil pumps turned on for 1–2 hours each Monday for lubrication ； For reciprocating compressors, use the hand oiler to apply oil 10–20 times per week for lubrication ； 8. On the 1st of each month, start the reciprocating compressor for a test run of 3-5 minutes. The above are the main experiences and methods we use for the management of special equipment in our workshop during the summer. There are certainly many mistakes and shortcomings in them, but I hope that some of these good practices can serve as useful references and inspiration for other workshops. I also hope that other workshops can share their good experiences with us. In this way, by learning from one another and complementing each other’s strengths, we can collectively improve the equipment management level of our group company.