Reviewing the Old to Discover the New (Series 26)

1. Develop a furnace drying plan. 2. Assign a dedicated person to oversee the furnace drying plan. 3. Trigger an alarm before starting the drying process; interlocks are not effective in this case. 4. Conduct a combustible gas analysis before ignition. 5. If the furnace goes out, a new explosion test must be carried out before attempting to ignite it again

The heating rate should not be too fast; check whether the relevant valves are open or closed

(1) Prepare a furnace drying plan, which shall be reviewed and approved by the relevant departments. Train operators to learn* and master the operating procedures and matters that require attention. (2) The furnace drying operation should be carried out under the guidance of the person in charge of production in the workshop. (3) Before heating the furnace, the relevant alarm signals and production interlocks must be calibrated properly and put into use. (4) Before ignition, it is necessary to analyze the oxygen content in the fuel gas and the combustible gas content in the furnace; ignition can only be carried out once these values meet the requirements. When igniting, the principle of \"fire first, then gas\" should be followed. Safety measures to prevent burns from spray fire and fire extinguishing facilities must be in place during ignition. After the furnace is turned off and before it is restarted, replacement must be carried out again, and ignition can only take place once it meets the requirements. Testing of transmission equipment

(1) Prepare a furnace drying plan, which shall be reviewed and approved by the relevant departments. Train operators to learn* and master the operating procedures and matters that require attention. 　　(2) The furnace drying operation should be carried out under the guidance of the person in charge of production in the workshop. 　　(3) Before heating the furnace, the relevant alarm signals and production interlocks must be calibrated properly and put into use. 　　(4) Before ignition, it is necessary to analyze the oxygen content in the fuel gas and the combustible gas content in the furnace; ignition can only be carried out once these values meet the requirements.

①When heating the furnace, it should not be heated with intense fire; the temperature should rise slowly and evenly, with a maximum rate of increase of less than 20°C per day. ②During the furnace drying process, the water level in the steam drum should be checked regularly to keep it within the normal range at all times. ③The combustion flame inside the furnace chamber in the drying oven should be even, and not concentrated in one area. ④During the furnace drying process, the emergency drain valve can be used to maintain the water level in the drum and prevent debris from entering the superheater. ⑤During the furnace drying process, the flue gas temperature should be recorded at regular intervals in order to control the rate of temperature rise and the maximum temperature, ensuring that they do not exceed the specified limits.

1) The temperature should be increased gradually during furnace drying. 2) During furnace drying, the water level in the pot should be maintained at the lowest safe level indicated by the water gauge. 3) During furnace drying, it is necessary to regularly check the condition of the furnace; there should be no cracks or other defects such as irregularities. If any such issues are detected, remedial actions must be taken. 4) Anti-freezing measures should be taken when heating the furnace in winter.

⑴Prepare a furnace drying plan. ⑵There is a dedicated person in charge of heating the furnace. (3) Alarm before furnace heating, with interlocked activation. (4) Conduct a combustible gas analysis before ignition. (5) When the furnace goes out, a new explosion test must be carried out before restarting it

Before starting up various reaction reactors after maintenance, they should be dried out in accordance with the furnace drying procedures. (1) Prepare a furnace drying plan, which shall be reviewed and approved by the relevant departments. Train operators to learn* and master the operating procedures and matters that require attention. (2) The furnace drying operation should be carried out under the guidance of the person in charge of production in the workshop. (3) Before heating the furnace, the relevant alarm signals and production interlocks must be calibrated properly and put into use. (4) Before ignition, it is necessary to analyze the oxygen content in the fuel gas and the combustible gas content in the furnace; ignition can only be carried out once these values meet the requirements. When igniting, the principle of \"fire first, then gas\" should be followed. Safety measures to prevent burns from spray fire and fire extinguishing facilities must be in place during ignition. After the furnace is turned off and before it is restarted, replacement must be carried out again, and ignition can only take place once it meets the requirements. Testing of transmission equipment: In petrochemical production facilities, machines and pumps are used to transport liquids, gases, and solid media. Due to the complex operating environment, a failure in any single unit can affect the entire system. Therefore, through trial runs, it is necessary to assess whether the machine and pump, after maintenance, can ensure a safe start-up with a successful first attempt at feeding material. (1) Prepare a commissioning plan, which shall be reviewed and approved by the relevant departments. (2) A designated person shall be responsible for conducting a thorough and careful inspection to ensure compliance, with all safety facilities and devices being complete and in good condition. (3) The commissioning work shall be uniformly directed by the person in charge of production in the workshop. (4) Cooling water, lubricating oil, motor ventilation, thermometers, pressure gauges, safety valves, alarm signals, interlock devices, etc., must be sensitive and reliable, and operate properly. (5) Check the opening and closing status of the valve to ensure it is in the specified state. (6) The test site must be clean and tidy, with clear warning lines in place. Commissioning after equipment maintenance: For the commissioning process following maintenance, it is important to pay attention to the following aspects: (1) Prepare a commissioning plan, which must be reviewed and approved by the relevant supervisors. (2) Designate a specific person to conduct a thorough and careful inspection of the equipment, and any defects identified must be eliminated promptly. Maintenance records must be complete, and safety facilities must be in good condition. (3) A designated person shall check the installation and removal of blind plates in the system, keep records, sign for confirmation, and take strict measures to prevent omissions. (4) The device’s self-protection system and safety interlock devices have been properly calibrated, and operate reliably and sensitively; the person in charge of the project must sign to confirm this. (5) Auxiliary systems such as water supply, steam supply, and power supply must operate properly and meet the process requirements. The entire device must be in condition to be started up. (6) Carry out the joint commissioning work under the unified command of the plant or workshop management.