Boiler regulations formulated in accordance with the latest rules for boiler operation and management

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Compilation of various regulations regarding boilers: 1. Post responsibility system – Duties of safety management personnel: (1) Implement relevant laws and regulations. (2) Organize participation in the formulation of various rules and regulations as well as safety operating procedures, and have the authority to stop any violations at the site. (3) Responsible for the safe and efficient operation of the boiler to meet the unit’s steam requirements; handles matters related to boiler installation, repair, modification, acceptance, annual inspections, registration, changes, decommissioning, and scrapping. (4) Prepare plans for boiler inspection and maintenance, formulate procurement plans for boiler spare parts and fuel, and organize their implementation as well as carry out supervision and inspection. Organize and oversee the implementation of maintenance and minor repair plans for boilers and associated equipment, and cooperate with relevant departments in the inspection and acceptance process after the maintenance of boiler equipment. (5) In conjunction with education and security departments, organize technical training and safety education for personnel such as stokers, water quality testers, and maintenance staff. (6) Conduct regular safety inspections of the boiler, check the implementation of relevant rules and regulations, as well as the compliance of operators with operating procedures ； Regularly collect, organize, and archive records related to the boiler. (7) Improve the working conditions for boiler operators, ensure safe production, and practice civilized production. Stoker’s Post Responsibility System: (1) Strictly abide by all rules and regulations, operate with care to ensure the safe and efficient operation of the boiler. (2) Strictly abide by labor discipline, avoid engaging in activities unrelated to production, and do not leave one’s post without permission; it is strictly prohibited for on-duty personnel to overlap shifts or have one person handle multiple tasks. The on-duty boiler operator is not allowed to drink alcohol before or during shifts. (3) Continuously monitor the pressure gauge and water level gauge; conduct hourly inspections of the boiler’s operating equipment. Diligently and promptly fill out the operating records for the boiler and its auxiliary equipment, ensuring that they are accurate, neat, and complete. Any equipment failures and the measures taken in response to them should be reported promptly to the shift leader and the boiler maintenance technician, and recorded in the operation logbook. (4) Responsible for carrying out operations such as ignition, operation, and shutdown of the furnace; carefully inspecting safety accessories, protective devices, coal hoppers, various valves and openings, soot blowers, and baffles, and reporting any issues found to the safety management personnel promptly. The right to refuse unlawful orders ； Strictly implement the boiler shift handover system. (5) Thoroughly maintain the boilers, auxiliary equipment, and safety accessories, and add lubricating oil or grease to all lubrication points in the prescribed amounts. (6) Keep records of the consumption and supply of fuel, steam, water, and electricity; organize energy-saving competitions among work teams; ensure that smoke and dust removal equipment operates normally; and make sure that flue gas emissions meet regulatory requirements. (7) When abnormal conditions in the boiler are detected that pose a threat to safety, emergency shutdown measures should be taken and the matter reported promptly to higher-level management. (8) In the event of an accident involving the boiler, emergency measures should be taken proactively, and safety managers must be informed immediately. If the accident is not properly handled, the boiler operator must not leave the site. (9) Maintain cleanliness both inside and outside, keep facilities tidy, ensure records are clear, store tools properly, and keep pathways unobstructed. (10) Strive to learn professional technical knowledge and continuously improve operational skills. Responsibilities of boiler maintenance personnel: (1) Strictly follow the routine inspection system, conduct inspections at regular intervals, and keep proper records ； (2) Carry out proper maintenance and repair of boiler equipment to ensure its safe and efficient operation ； (3) Based on the equipment maintenance plan and the condition of the boiler equipment, actively carry out preparations for maintenance ； (4) Strive to learn professional knowledge and continuously improve technical skills. Responsibilities of Water Treatment Laboratory Technician: (1) Implement water quality regulations, conduct regular water quality analyses, and ensure that the supply water and boiler water meet **the required standards ； (2) Keep proper records of the operation of water treatment equipment and water quality testing; strive to reduce consumption ； (3) Ensure the accuracy of solutions, reagents, etc. used for analysis ； (4) Carry out proper maintenance of instruments and equipment ； (5) Abide by labor discipline and maintain cleanliness and hygiene in the laboratory and work area ； (6) Strive to learn professional knowledge and continuously improve technical skills. 2. Boiler patrol inspection system: (1) Conduct a patrol inspection of the boiler equipment once per hour, and record the inspection results in the operation log. (2) Contents of the routine inspection A: Water level and steam pressure are within the specified range. The three major safety accessories, protective devices, and instruments are sensitive and reliable, with no leakage. B: There are no bulges or leaks in the visible areas of the stressed components; the combustion condition inside the furnace is good, with no sounds of water or steam leakage. C: The furnace walls and arch are undamaged, and the viewing door of the furnace door is intact and secure. D: The pipes and valves show no leaks, and the valves operate smoothly. E: There is no friction or abnormal noise from the grate and rotating machinery; the oil level is normal. F: The dust collector shows no damage; the ash hopper has no ash leakage; the airlock is airtight. G: The boiler room is well-lit and the pathways are clear. (3) Inspection route: three major safety accessories → grate and reducer → boiler body → slag extractor → economizer → dust collector → induced draft fan → blower → pipeline valves → steam distribution cylinder → feed water pump. (4) When any abnormality is detected, it should be addressed promptly and properly. And report it promptly to the person in charge of the boiler or the relevant supervisors. At the same time, it is necessary to fill in the operation records carefully and explain them clearly to the person taking over. 3. Boiler operation shift handover system: (1) Shift handover for boiler operation shall only take place when everything is operating normally. In the event of an accident, the person taking over the shift must assist in dealing with it; shift handover procedures can be carried out only after the accident has been resolved. (2) During the handover of boiler operation, it is generally necessary to jointly inspect the following items: A. The operating condition of the boiler. B. Whether equipment and accessories such as water level gauges, pressure gauges, safety valves, water supply devices, high and low water level alarms, and drain valves are sensitive and reliable. C. Check whether there are any damages such as bulging, deformation, or leakage in the visible parts of the boiler’s heating surfaces. D. Check for any abnormalities such as cracks, collapses, or jamming in the furnace walls, arches, grates, etc. (3) In addition to recording the operations of their shift in the operation log, the person handing over the shift should also provide a verbal summary to the person taking over, detailing the operations carried out during that shift, as well as any problems encountered and matters that require attention. (4) The incoming staff must carefully review the handover records and listen to the briefing on the situation. (5) After clarifying the division of responsibilities before and after the shift handover, both parties carry out the shift handover procedures. (6) The “five handovers” and “five non-handovers” must be observed. ““Five checks”: Normal boiler pressure, water level, temperature, and combustion ； The boiler’s safety accessories are sensitive and reliable ； There are no abnormalities in the boiler itself or its auxiliary equipment ； Operation records are complete and accurate; spare parts, tools, and equipment are available in sufficient quantities and in good condition ； The cleaning of the boiler room ensures civilized production. “The “five no’s”: do not hand it over to boiler operators who are drunk or suffering from serious illnesses that prevent them from performing their duties ； When dealing with accidents, no shift handover is carried out ； Until a qualified successor arrives, it must not be handed over to other unlicensed, informal stokers ； Do not deliver when abnormalities occur in the boiler itself and its auxiliary equipment ； Payment will not be made when boiler pressure, water level, temperature, or combustion is abnormal. 4. Boiler Equipment Maintenance System: (1) The safety management personnel are responsible for overseeing the maintenance of boiler equipment; they establish plans for major, medium, and minor repairs as well as monthly maintenance schedules, and ensure that the maintenance staff carry out these tasks. (2) Maintenance personnel strictly follow the routine inspection system; upon detecting any abnormalities in the operation of the equipment, they take immediate action and report to the safety management personnel as well as the authorities/Personnel in charge of special equipment. (3) For the daily maintenance of equipment, a dual-responsibility system is implemented, with operators and maintenance workers each bearing their own responsibilities. Clear roles are defined to ensure that potential hazards are addressed promptly; if such hazards cannot be eliminated, they must be reported to the person in charge on duty or the safety management personnel. (4) The equipment is generally given minor repairs every three months and major repairs once a year. During minor repairs, check the tightness of all components of the auxiliary equipment, replace damaged belts, and eliminate oil leaks ； A mid-term overhaul of the boiler itself is required, including the removal of ash and slag accumulated inside the furnace ； During major repairs, the bearing housing should also be cleaned and the oil replaced; the pressure-bearing components of the boiler should be inspected, and any damaged furnace arches, furnace walls, and insulation layers should be repaired. (5) The safety valve should be manually vented once a week and automatically vented once a month. The pressure gauge should have its water storage tube flushed once a week, while the water level gauge should be flushed once per shift. The drain valve should be used to discharge waste water one to two times per shift as necessary. The water level alarm should be activated at the start of each shift, and soot blowing or flue cleaning should also be carried out once a week. (6) Safety management personnel should prepare plans for spare parts, keep records of equipment maintenance and accidents, and carry out basic tasks such as maintaining equipment registers and archives. (7) After being taken out of service, boilers shall be subjected to pressure maintenance, dry or wet maintenance, inert gas purging, and other procedures in accordance with relevant regulations. 5. Boiler water quality management system: (1) Boiler feed water must be treated; if its quality is not up to standard. The boiler is not allowed to be put into operation. (2) External chemical water treatment should be used for boiler feedwater. (3) Chemical treatment should be applied to the water in the tank, and the water quality must meet the following requirements: the pH level should be between 10 and 12. (4) The boiler uses external chemical water treatment, and the water quality shall meet the following requirements: pH≥7 ； (5) Regularly test the water quality and keep records; in case of any abnormalities, the frequency of testing should be increased accordingly. (6) The boiler water treatment equipment should be kept in good condition, with regular maintenance and timely regeneration. Water treatment operators should be proficient in operational skills. (7) Water quality testers must undergo assessment and certification by the special equipment safety supervision authorities before they can work in this capacity. 6. Operating Procedures for Boiler Equipment 1. Operating Procedures for Chain Grate Steam Boilers and Associated Equipment 1.1 Inspections and preparatory work before starting up the boiler. 1.1.1 Check whether all manhole covers and handhole covers on the boiler are properly installed. Check whether the screws at each flange seal are tightened, and also ensure that all temporary partitions and other temporary plugs installed at the flanges have been removed. 1.1.2 The ash and debris accumulated in the furnace and flue ducts should be removed completely. The control valves and shutters for air ducts and flue ducts must be intact and airtight, operate smoothly, and provide accurate indication of the degree of opening or closing. After the inspection is complete, close the main flue damper of the economizer and open the bypass flue damper; if there is no bypass flue, open the valve of the economizer recirculation pipe. 1.1.3 The external furnace walls of the boiler shall be intact and airtight; devices such as furnace doors, ash doors, fire-viewing doors, and inspection doors shall be complete and properly closed. 1.1.4 Check that the safety accessories are in good condition and that the valves rotate smoothly and properly. All instruments and control devices should be complete, in good condition, and clean; the lighting of the water level gauge should be adequate. After passing the inspection, the level gauge and pressure gauge cocks should be put into operation. 1.1.5 The valve handwheels on various pipes of the boiler must be intact, the valves should operate smoothly, and there must be sufficient packing for sealing. After passing the inspection, open all drain valves on the steam pipe and the valves on the feedwater pipe. 1.1.6 Check whether the combustion device is in good condition; ensure that the mechanical transmission, coal feeding, and slag discharge systems operate properly. The safety spring of the speed control box should be properly compressed, and the lubrication should be adequate. The coal gate flap moves smoothly, and the coal gate scale provides accurate readings. The eagle iron is neat and in good condition; the slag turning plate is intact, and it moves smoothly. 1.1.7 Check that the couplings of auxiliary equipment (exhaust fans, blowers, water pumps, etc.) are firmly connected, that the V-belts are properly tensioned, that the lubricating oil is of good quality and in sufficient quantity, and that the cooling water flow is unobstructed. After passing the inspection, install the safety guards, conduct trial runs separately, and pay attention to the current during no-load operation. The dust discharge port of the dust removal device must be tightly sealed to prevent air leakage. 1.1.8 Once it has been verified that the boiler meets the operating requirements, water supply can be commenced. When water is introduced, the air valve on the boiler drum should be opened ； The water should be introduced slowly, with the maximum temperature not exceeding 90°C; in winter, the temperature should be below 50°C. During water inlet, the access holes, manholes, and the valves and flanges in various areas should be checked for any signs of leakage; otherwise, the water supply should be stopped for repair. When the water reaches the lowest level indicated by the gauge, the water supply should be stopped. At this time, the water level inside the gauge should remain unchanged. Otherwise, the cause should be identified and efforts made to eliminate it. 1.2 Starting the boiler and increasing its pressure 1.2.1 Starting the boiler 1.2.1.1 Before starting the boiler, open its smoke and air dampers to allow natural ventilation for about 10 minutes ； If mechanical ventilation is used, it takes about 5 minutes to remove the combustible gases accumulated in the flue and furnace. 1.2.1.2 For boilers equipped with economizers, the bypass flue damper should be opened or the economizer recirculation valve should be opened. 1.2.1.3 Open the natural ventilation doors to an appropriate degree, then start a fire using wood and other flammable materials; it is strictly prohibited to use oils with high volatility to start a fire. 1.2.1.4 The heating rate should not be too fast; from ignition of a cold furnace to the start of pressure buildup, boilers with an evaporation rate of 2 tons per hour or less generally require no less than 1 hour ； For boilers with an evaporation rate of 2–4 tons per hour, the duration must be no less than 1.5 hours ； Boilers with an evaporation rate of 6.5–10 tons per hour must have a duration of no less than 3 hours. 1.2.1.5 After starting the fire, close attention must be paid to the boiler water level. 1.2.2 Pressurization 1.2.2.1 The air valve can be closed once a large amount of steam begins to emerge from it. 1.2.2.2 When the steam pressure increases by 0.05–0.1 MPa, the water level gauge should be flushed. After flushing the water level gauge, it should be compared with another water level gauge in the boiler; if a discrepancy is found between the readings before and after flushing, the gauge should be flushed again. 1.2.2.3 When the steam pressure rises to 0.1–0.15 MPa, the pressure gauge and its pressure pipe must be flushed once. After flushing, it should be checked against another pressure gauge; the pressures indicated should be identical. 1.2.2.4 When the steam pressure rises to 0.2–0.3 MPa, carry out the following tasks: a. Use water injection devices, steam pumps, electric pumps, and other water supply equipment to feed water into the furnace, and observe whether they function properly. b. Discharge waste water sequentially, check whether the discharge valve operates smoothly and tightly, and facilitate the water circulation in the boiler by releasing boiler water. Pay attention to the water level when discharging waste. c. For newly installed or repaired boilers, tighten the access hole and manhole covers again. When tightening, it is prohibited to use an extended handle, and excessive force should not be applied. 1.2.2.5 When the pressure rises to the operating pressure, it is necessary to check whether the safety valve is sensitive, effective, and accurate. 1.3 Normal operation of the boiler. The proper operation of a boiler involves regulating its water level, steam pressure, water temperature (when there is a superheater), and combustion, in order to ensure safe and efficient operation. 1.3.1 Protection of the water level gauge and water level regulation. 1.3.1.1 The water level should be flushed once per shift (following the flushing method). 1.3.1.2 The steam and water cocks of the level gauge should be kept clean; any leaks of water or steam should be repaired promptly. 1.3.1.3 When the boiler is equipped with high and low water level alarms, these must correspond to the actual high and low water levels. 1.3.1.4 During operation, the water level in the boiler should be maintained at the normal level, with fluctuations allowed within ±25 millimeters of this level. It should be specifically noted here that the red lines marking the high and low water levels on the gauge do not represent the range of water level fluctuations; rather, they are warning limits for excessively high or low water levels, indicating that exceeding these lines means entering a dangerous situation of water shortage or flooding. 1.3.1.5 Strive for a balanced and continuous water supply to avoid fluctuations in steam pressure and temperature. 1.3.1.6 When the load changes significantly, be aware of the possibility of false water levels to avoid misoperations. 1.3.2 Protection of pressure gauges and adjustment of steam pressure. 1.3.2.1 Pressure gauges shall be calibrated every six months. 1.3.2.2 Under normal circumstances, the pressure gauge should be flushed once a month; if it is found to be inaccurate or insensitive, it must be replaced immediately. 1.3.2.3 Pressure gauges should be kept clean at all times. 1.3.2.4 During normal operation of the boiler, it is necessary to monitor the reading on the pressure gauge; the steam pressure should remain relatively stable and must not exceed the maximum pressure limit. 1.3.2.5 Changes in steam pressure reflect changes in load and evaporation rate; therefore, adjusting the steam pressure is equivalent to adjusting the load and evaporation rate ； It depends on the stoker’s control of the combustion. 1.3.3 Regulation of steam temperature 1.3.3.1 In boilers equipped with superheaters, it is necessary to strictly control the temperature of the superheated steam within the allowed range; a low steam temperature affects the efficiency of the steam and meets the requirements of production processes ； Excessively high steam temperature endangers the safety of the superheater and may cause tube rupture. 1.3.3.2 Small boilers generally regulate the superheated steam temperature by combustion, while larger boilers usually use desuperheaters for this purpose. 1.3.4 Adjustment of boiler combustion. 1.3.4.1 During operation, the boiler primarily achieves stable load levels by adjusting the grate speed, air volume, and air pressure. 1.3.4.2 During the combustion of coal, when combustion proceeds normally, the flame is golden yellow in color ； When the air flow is too high, the flame turns white ； When the air flow is too low, the flame turns red. 1.3.4.3 Indicators of normal combustion: (a) Maintain a high furnace temperature; (b) Adjust the air volume to achieve an optimal excess air coefficient α. The required value of α at the boiler’s exhaust is: ≤1 for fluidized bed boilers. 4 ； Stratified combustion boiler ≤1. 65. (c) Reduce the combustible content in ash, thereby minimizing losses due to mechanical incomplete combustion. (d) Reduce the flue gas temperature; for boilers with a rated evaporation capacity of ≥1 t/h, this temperature should be ≤170°C in order to minimize heat losses from the flue gases. (e) Improving the thermal efficiency of boilers is required to meet the provisions of the \"Regulations on the Technical Supervision and Management of Boiler Energy Conservation\". 1.3.4.4 Requirements for combustion regulation: (a) Ensure proper air distribution; the amount of air used should be appropriate, and it must mix thoroughly with the fuel. For boilers with segmented ventilation, it is necessary to adjust the opening degrees of the air valves in each segment properly. (b) The furnace chamber should be maintained at a high temperature as much as possible; the temperature in a stratified combustion furnace is generally between 1100 and 1300°C. (c) As the load increases, increase air flow first, then fuel ； Reduce the load: first cut back on fuel, then on air. (d) The ignition zone, combustion zone, and burnout zone in the fire bed should maintain a certain length to ensure that the new coal ignites promptly, burns vigorously, and is completely burned out. (e) Reduce air leakage, maintain high temperatures inside the furnace, and minimize heat loss. (f) Adjust the negative pressure in the furnace chamber; it is generally required to be 2–3 pascals. Prevent excessive negative pressure, which can lead to the intake of too much cold air and thus a drop in furnace temperature as well as increased heat loss ； The negative pressure is too low, causing flames to spray outward and injure people. (g) Boilers equipped with soot blowers should have their soot blown regularly to prevent the heat transfer surfaces from being affected by ash accumulation, which would increase heat losses. 1.3.5 Regular and continuous blowdown of boilers a. Requirements for regular blowdown: It is generally required to be carried out at least once per shift, in sequence at each blowdown point, with no omissions; blowdown should be performed when the load is low as much as possible; water level must be closely monitored during blowdown to prevent water shortage; blowdown should follow the principle of \"frequent, small-volume, and uniform blowdown\" to achieve good results while minimizing heat loss ； When two drain valves are connected in series, it is generally necessary to open the slow-opening valve first, followed by the fast-opening valve ； After the discharge is complete, close the quick-opening valve first, then the slow-opening valve. b. Requirements for continuous blowdown: Based on the test results of the boiler water, adjust the opening degree of the continuous blowdown valve to ensure that the boiler water meets the standard requirements; the heat generated by continuous blowdown should be recovered as much as possible. 1.4 Normal shutdown 1.4.1 Reduce the boiler’s evaporation rate and stop feeding coal. 1.4.2 Stop feeding coal into the coal hopper; once all the coal in the hopper has entered the furnace, stop the rotation of the grate. 1.4.3 Once the coal is burned out, stop the blower and exhaust fan, cease steam supply, and switch from automatic to manual water feeding. Maintain a high water level. 1.4.4 Remove the coal ash from the grate, as well as the ash accumulated in the ash hoppers and various air chambers. 1.4.5 After shutting down the boiler, partitions should be installed in the steam, feed water, and blowdown pipelines to ensure reliable isolation from the boiler while it is in operation. 1.4.6 After the furnace is shut down, the boiler water can be completely drained only when its temperature drops below 70°C. Before releasing water, the boiler air valve should be opened. 1.5 Emergency Shutdown 1.5.1 The plant should be shut down urgently in the following situations_. 1.5.1.1 The boiler water level is below the visible lower edge of the water gauge. 1.5.1.2 The water supply was increased continuously and other measures were taken, but the water level continued to drop. 1.5.1.3 When the boiler water level exceeds the highest visible level (full water), the water level cannot be seen even after draining water. 1.5.1.4 If all the feed water pumps fail or there is a fault in the feed water system, it is not possible to supply water to the boiler. 1.5.1.5 The water level gauge or safety valve is completely failed. 1.5.1.6 Damage to boiler components endangers the safety of operators. 1.5.1.7 Damage to the combustion equipment, collapse of the furnace walls, or heating of the boiler framework pose a serious threat to the safe operation of the boiler. 1.5.1.8 Other abnormal conditions that endanger the safe operation of the boiler. 1.5.2 Operation for emergency shutdown of the furnace: 1.5.2.1 Stop coal feeding and air supply, and reduce exhaust air flow. 1.5.2.2 Quickly remove the coal from the grate, but watering the furnace is prohibited. 1.5.2.3 Isolate the boiler from the steam main, open the air valve and the superheater drain valve to reduce the pressure. 1.5.2.4 Open the bypass flue and close the main flue to allow air circulation and increase the cooling rate. 1.5.2.5 If the boiler is not shut down urgently due to water shortage, blowdown and water addition (to maintain the boiler water level) can be used to accelerate pressure reduction. 1.5.2.6 In case of a water shortage incident, it is strictly prohibited to introduce water into the furnace. 1.6 Operating Procedures for Centrifugal Pumps 1.6.1 Conduct a test start-up to check whether the motor rotates in the correct direction and whether the pump moves smoothly; the test duration should be no less than one minute. 1.6.2 Close the gate valve on the discharge pipeline; once the pump reaches its normal operating speed, gradually open the gate valve on the discharge pipeline. With the gate valve on the discharge pipeline closed, the pump shall not operate continuously for more than three minutes. 1.6.3 Pay attention to checking the temperature of the water pump bearings; it should not exceed the ambient temperature by 35°C, with a maximum of 75°C. 1.6.4 It is not allowed to use the gate valve on the suction pipeline to regulate flow, in order to avoid cavitation in the water pump. 1.6.5 Regularly check for leaks and overheating in the packing box; under normal conditions, the packing chamber should leak 10–20 drops per minute. If the leakage is more or less than this amount, the packing gland should be tightened or loosened accordingly. 1.6.6 Regularly check the tightness of the anchor bolts, the fluctuations in the outlet pressure gauge, and the vibration of the pump. 1.6.7 Ensure that the pump operates without any abnormal noises; if any issues are detected, they should be addressed promptly. 1.6.8 When the ambient temperature is below 0°C, drain the water inside the pump to prevent the pump casing from cracking due to freezing. 1.6.9 When the pump is not in use for an extended period, it should be disassembled, its components dried, and anti-rust oil applied to the sliding surfaces, after which it should be stored properly. 1.7 Operating Procedures for Steam Reciprocating Pumps 1.7.1 Before starting the pump, it is necessary to check whether all bolts are tightened properly. 1.7.2 All oil filling cups and oil holes must be filled with lubricating oil, and the stop valves on the inlet, outlet, and exhaust pipes must all be opened. 1.7.3 When starting the pump, the steam control valve must be gradually opened to allow the pump to start slowly. 1.7.4 After the pump is started, if any fault is detected, it must be stopped immediately to investigate the cause; it can only be restarted after the issue has been resolved. 1.7.5 A vent plug is placed on the water chamber cover; it should be opened when starting the pump, and closed once water is seen spraying out. 1.7.6 After the pump stops running, the oil cup on the cylinder must be closed immediately. 1.7.7 To stop using it, the drain valves at the bottom of the cylinder and water tank must be opened to allow the water accumulated inside to drain out. 1.7.8 The pump must be kept clean at all times; nothing should be placed on the pump body. 1.7.9 During operation of the pump, lubricating oil should be poured into the oil hole every half hour, and the oil cup in the steam chamber should always contain lubricating oil. 1.8 Operating procedures for forced draft fans 1.8.1 Before starting the fan, it is necessary to check whether all connections are secure, and whether components such as belts, oil level, electrical instrument piping, and cooling systems are functioning normally; additionally, the damper should be closed. 1.8.2 After the fan starts up and reaches its normal speed, adjust the damper; make adjustments as needed in response to changes in load, and fix the settings after adjustment. 1.8.3 During fan operation, the bearing temperature shall not exceed the ambient temperature by 40°C, with a maximum temperature of 80°C. 1.8.4 When abnormal phenomena are detected during the startup, shutdown, or operation of the fan, it should be stopped immediately for inspection in order to resolve the fault. 1.8.5 Regularly clean impurities such as dust, dirt, and water accumulation inside the fan to prevent rust. The oil level should be kept at the midpoint; too much oil should not be added to avoid bearing overheating and oil leakage. 1.9 Operating Procedures for Dust Removal Equipment 1.9.1 While the boiler is in operation, it is necessary to regularly check the sealing of the dust removal equipment; if any air leakage occurs, measures should be taken promptly. 1.9.2 The dust accumulated inside the dust collector must be discharged regularly, at least once per shift. 1.9.3 It is prohibited to strike the dust collector housing to prevent the wear-resistant coating from peeling off, which could affect its service life. 1.9.4 During boiler maintenance, the dust removal equipment should also be inspected and repaired. 7. Boiler safety management system and accident handling procedures: (1) Persons other than boiler operators are not allowed to enter; external visitors for inspection or learning purposes may enter only with the approval of unit management. (2) The personnel on duty must remain at their posts, abide by labor discipline, not leave their positions or fall asleep while on duty, and strictly follow the safety operation procedures and the inspection system. (3) The equipment in the boiler room shall not be used by personnel who are not on duty, and unlicensed boiler operators as well as water quality testers are not allowed to operate it alone. (4) Keep the entrances and passages to the boiler room clear; the doors must not be locked or barred. Gas cylinders must not be placed in the boiler room. Flammable items such as gasoline, engine oil, paint, etc., as well as greasy cotton yarn and similar materials, must not be left scattered around in the boiler room; they should be stored in locations far away from sources of fire. (4) The fuel fed into the furnace should be carefully inspected to prevent accidents caused by the mixing in of hazardous materials. When removing coal ash and slag, be careful to extinguish any remaining embers. (5) After the boiler is shut down, it must be monitored to prevent accidents. (6) In the event of a major hazard being identified, effective measures should be taken immediately to address it, and the superior authorities should be informed promptly. (7) Ensure adequate lighting in the boiler room, clear pathways, and fully functional fire-fighting equipment. (8) In the event of serious damage to the pressure-bearing components of the boiler (such as deformation or leakage), damage to auxiliary equipment, or an explosion in the furnace, among other severe incidents, the personnel on duty must initiate an emergency shutdown of the boiler and immediately report the incident to the plant’s management. Upon receiving such a report, the company must promptly inform the local quality and technical supervision authorities about the details of the incident, its causes, and the measures taken to address it, while also organizing an investigation into the incident. 8. Energy-saving management system 1. When purchasing fuel (such as coal), efforts should be made to choose a type that is as close as possible to the designed fuel type. 2. Fuel should be purchased in a planned manner, stored in separate piles, and used in an orderly fashion. A procurement plan should be formulated in accordance with production requirements; coal should not be stored for too long, and coal from different batches should be stored separately ； “\"New\" coal, \"old\" coal, and coal from different mines should be stored separately; generally, it should be used following the principle of burning the \"old\" coal first and the \"new\" coal later. 3. Generally, coal quality test reports from the coal supplier should be available for the incoming coal. After the coal arrives at the site, coal samples are taken from various points of the incoming coal and sent to the laboratory for quality analysis, which is then compared with the original test results. 4. The results of coal quality analysis and the conditions of coal stacking should be notified to the workshop supervisor, the boiler operators, and the coal feeders. 5. The boiler crew should use high-quality and lower-quality coal in combination, based on the test results. 6. The humidity of coal used for combustion should be maintained at 8%–10%.