[Talk about Haichuan Safety] What are anti-accident measures? Does your company have it?

Say goodbye to safety accidents and learn about anti-accident measures* ! ! ! Boiler Man 2018-08-11 1. Prevent secondary combustion accidents at the rear of the boiler 1.1 Before the boiler is ignited in cold and warm states, the boiler should be purged ； 1.2 When igniting the boiler, ensure that the fuel pressure and atomization pressure are within the specified values, and ensure that the oil gun has good atomization and complete combustion. ； 1.3 Carefully adjust the boiler combustion conditions to prevent incompletely burned oil and pulverized coal from accumulating on the heating surface of the tail flue or on the flue. ； 1.4 During normal operation of the boiler, if the flue gas temperature at the outlet of the economizer is 16°C higher than the normal temperature, soot blowing should be strengthened. ； 1.5 A newly installed oil gun should undergo a cold test before starting to ensure the amount of oxygen required for combustion at the root of the oil gun. ； 1.6 When adding coal to the boiler, the requirements should be strictly followed. It is strictly forbidden to forcibly add coal at low bed temperature. ； 1.7 Strengthen oxygen control during operation, and it is strictly forbidden to operate for a long time under low oxygen conditions. ； 1.8 Strictly control the cyclone separator outlet temperature below 950°C. 2. Prevent boiler furnace explosion accidents 2.1 Strengthen the maintenance and management of the FSSS control system, interlocking protection system and sound and light alarm system to ensure that the protection device operates accurately and reliably ； 2.2 Ensure that thermal instruments and protective power supplies are reliable and prevent the protection from refusing to operate due to loss of thermal power supply. ； 2.3 Before major repairs and starts of the boiler, conduct electric door, adjustment door, split door baffle and related interlocking protection experiments according to the regulations, and ensure that they operate normally ； 2.4 Strengthen the supervision and management of fuel and coal burning, strengthen coal quality analysis, promptly notify the boiler supervisor of the coal quality situation, and be prepared to adjust combustion to prevent boiler fire extinguishing. ； 2.5 Strictly control the quality of boiler fuel to prevent water from being contained in the fuel ； 2.6 When adjusting the fuel inlet and throttle return valves, do so slowly to prevent large fluctuations in fuel pressure. ； 2.7 Strengthen the maintenance and management of the ignition oil system to eliminate leakage and prevent fuel from leaking into the furnace and causing deflagration. OFT tests and fuel leakage tests should be performed before ignition. Only after the test is qualified and purging is completed, ignition can be allowed. If the fuel main pipe leakage test fails, the cause should be identified and startup is prohibited until the defect is eliminated. ； 2.8 In the early stage of ignition, when the oil gun is put in, the fire situation of the oil gun should be observed from the spot and the flame monitoring TV. If it is found that the oil gun is not on fire but the fire detection signal is present, the oil gun should be stopped manually immediately, and maintenance and cleaning should be contacted in time. Repeated ignition is prohibited before the cause is found out. ； 2.9 When the atomization of the oil gun is not good, please contact us in time to clean the oil gun. The boiler personnel should adjust the air supply volume in time according to the fire condition of the oil gun to ensure sufficient fuel combustion. 2.10 When adding coal to the boiler, the procedures should be strictly followed. It is strictly forbidden to forcibly add coal at low bed temperatures. If the coal does not pulsate, the coal should be stopped immediately. ； 2.11 When the boiler is running normally without oil, if it is found that the oil level in the oil tank drops for unknown reasons or the fuel flow meter code increases, the maintenance personnel should be contacted to check whether the oil gun is leaking. ； 2.12 When the bed temperature is lower than 700℃, oil should be added in time to support combustion. When the load changes, the air volume should be adjusted in time to avoid imbalance of primary and secondary air volume and air-to-coal ratio. ； 2.13 Prevent coking in the furnace. When coking is found, please ask for instructions to shut down the furnace. ； 2.14 Strengthen the inspection of bed temperature thermocouples. If any abnormal thermocouples are found, they should be replaced in time. ； 2.15 The FSSS protection, interlock protection, and automatic combustion control systems that have been put in place should not be canceled at will. If protection is lifted due to work needs, it must be approved by a leader at or above the vice president level, and corresponding safety measures must be taken. ； 2.16 During normal operation of the boiler, the oxygen content should be strictly controlled within the range of 4%-8%. Thermal workers should regularly check the oxygen meter to ensure its accuracy. ； 2.17 After shutting down the furnace, ensure that all oil guns are purged, confirm on-site that all oil guns are in the exit position, and the manual oil inlet door is closed. ； 2.18 After emergency shutdown of the furnace after the induced draft fan and primary and secondary fans trip, the inlet and outlet baffles of the induced draft fan and primary and secondary fans should be fully opened for natural ventilation for 15 minutes to avoid accumulation of combustible gas. 3. Prevent overpressure and wear of boiler pressure-bearing parts 3.1 When the unit is running, overpressure operation is strictly prohibited, and the machine trip protection is enabled. When the turbine trips, the boiler must trip, otherwise manual MFT ； 3.2 Try to maintain coordinated operation of the unit, and load adjustment and fuel adjustment should be smooth and even. ； 3.3 The safety door and exhaust valve should operate reliably, all pressure gauges, pressure switches, and sensors should be in good condition, and all protections should operate normally. ； 3.4 When starting and stopping the unit, strictly follow the temperature rise and pressure rise curve to ensure that all parts of the boiler are heated evenly, and strictly control the temperature difference between the upper and lower walls of the steam drum to not exceed 50°C. 4. Prevent the superheater from overheating and tube explosion 4.1 Strengthen the temperature monitoring of the inlet and outlet of the superheater, spray water to reduce the temperature automatically, and ensure that the superheater does not overheat. ； 4.2 Strengthen combustion adjustment and control the furnace negative pressure to be stable ； 4.3 When the unit load is increased, fuel should be added slowly and evenly, and large adjustments are strictly prohibited. ； 4.4 When switching the water supply pipeline, it should be done slowly to keep the desuperheating water pressure stable. ； 4.5 Strengthen soot blowing on the heating surface to prevent soot clogging and coking. ； 4.6 Discharge sewage in a timely manner according to chemical requirements to ensure that the quality of soda water is qualified. 5. Prevent water-cooled wall and economizer pipes from bursting 5.1 Chemical coordination, strictly control the quality of boiler water, and strictly control the quality of soda water. ； 5.2 When starting and stopping the boiler, strictly follow the temperature rise and pressure rise curve to ensure uniform expansion of all parts of the boiler. ； 5.3 After the boiler is shut down, the temperature and pressure when releasing water from the boiler shall be strictly controlled in accordance with the regulations. Water shall not be released in advance to meet the construction deadline. ； 5.4 Ensure symmetrical operation of the coal feeder as much as possible to reduce thermal deviation ； 5.5 Under load permitting conditions, try to reduce the primary wind speed and increase the secondary wind speed to reduce wear and tear. ； 6. Prevent boiler drum full water and water shortage accidents 6.1 Steam drum water level protection is one of the necessary conditions for boiler startup. If the water level protection is incomplete, startup is strictly prohibited. ； 6.2 The boiler drum water level protection adopts independent measurement and logical judgment method of two out of three. ； 6.3 The drum water level gauge (transmitter) should be based on a differential pressure (with pressure correction circuit) water level gauge, and adopt pressure compensation and temperature compensation. ； 6.4 For the drum water level measurement system, correct insulation, heat tracing and antifreeze measures should be taken to ensure the normal operation and accuracy of the drum water level measurement system. ； 6.5 The boiler should be equipped with at least two independent local drum water level gauges and two remote drum water level gauges. The water level gauges should be configured in a way where two or more working principles coexist to ensure the correct monitoring of the boiler drum water level under any working conditions. ； 6.6 When the boiler is operating normally, the drum water level remains at 0, with a normal fluctuation range of ±50mm. The local water level gauge shall prevail. At least 2 or more remote transmission water level gauges must be guaranteed to be correct. When a water level measuring device stops operating due to a fault, a fault handling work ticket should be filled in. The work ticket should state the reasons, treatment plans, risk factors and other precautions. It should generally be restored within 8 hours. If it cannot be completed, measures should be formulated, and with the approval of the chief engineer, the construction period can be extended, but not more than 24 hours at most, and reported to the superior authority for record. ； 6.7 The local and remote water level gauges of the steam drum should be checked and calibrated regularly, and the water level gauges should be flushed regularly. The high and low water level alarms should be tested regularly. Abnormalities or defects should be eliminated in time to ensure correct water level monitoring. ； 6.8 If an accident involving water shortage occurs, the operator should handle it in accordance with the regulations. When the true water level of the steam drum cannot be judged during operation, the boiler should be shut down urgently. ； 6.9 When adjusting the drum water level, regardless of automatic or manual adjustment, attention should be paid to whether the feed water flow and steam flow are balanced, and large fluctuations in feed water flow should be avoided as much as possible. ； 6.10 Boiler drum water level 1 protection should be verified by actual transmission before starting and stopping the boiler. ； Use the water filling method to conduct high water level protection tests, and use the sewage door draining method to conduct low water level protection tests. It is strictly forbidden to use the signal short circuit method to conduct simulated transmission verification. 7. Measures to prevent personal casualties (boilers) 7.1 Strengthen safety technical training and improve safety technical management levels ； 7.2 Conscientiously implement the "two votes and three systems"” ； 7.3 Strictly implement the "Safety Operating Procedures" and "Boiler Operation Procedures" ；

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It feels like our company’s safety operating procedures are a term used in the electric power industry.

Release time of anti-accident emergency drill conducted with Coal-Mei Zhangdian Wangping Power Generation Company: 2020-03-30 09:23:54 Source: Author of China Electric Power Network: Niubo China Electric Power Network News On the afternoon of March 26, in order to improve the rapid response and comprehensive handling capabilities of desulfurization operators to emergencies, Wangping Power Generation Company organized and carried out an anti-accident drill on the deterioration of the slurry quality of the #2 absorption tower in the desulfurization centralized control room. 　　It is reported that this anti-accident drill was led by the chief engineer, with the power generation department as the specific drill * Relevant personnel from the department, the Ministry of Environmental Protection, and the Ministry of Work Safety serve as the evaluation team to make comments, focusing on checking whether the operating personnel respond quickly when an accident occurs, whether emergency measures are reasonable, whether equipment inspections are in place, and whether recovery is timely. 　　15: 00 acting * Officially started, the operator found that the color of the gypsum on the filter cloth of the #2 dehydrator turned black, and the desulfurization efficiency continued to decline. Based on the color judgment, it was suspected that the flue fly ash entered the absorption tower, and reported to the duty leader and specialist. 17:10 The cause of the accident was confirmed, and the desulfurization operation supervisor and specialist ordered the #2 tower dehydration system to be stopped, and the accident slurry tank was filled with slurry to improve the slurry quality. At 19:01, the indicators improved. With the consent of the commander-in-chief, the slurry pouring was ended, the #2 absorption tower dehydration system was restored, and the operating personnel were required to continue the slurry pouring operation at any time according to the operation conditions. 19: 30. The #2 desulfurization system resumes normal operation and performs * Finish. 　　play * After the performance, the evaluation team believed that the performance was * All operations follow strict procedures, but there are still loopholes in individual steps. overall performance * The process is smooth and the on-site processing is clear. There are some problems such as panic and omissions in some aspects, which need to be continuously improved in daily work. At the same time, backup synergists can be considered during operations and should be reflected in anti-accident operations. 　　Through this drill, the desulfurization operation duty personnel will be further proficient in handling desulfurization system accidents, enhance mutual coordination and cooperation, and improve anti-accident capabilities. It tested the on-duty personnel’s ability to deal with emergency desulfurization system failures and served as a good learning model for all on-duty personnel. * Practical effect.

Counterattack* The purpose of accident anticipation activities is technical training and training of personnel. The key lies in the preparation arrangements and effective implementation methods before the activities. 1. Mobilize all employees to raise awareness and carry out counter-accident drills * Before the event, all personnel should be mobilized to clarify any vague understandings in their minds and make everyone truly aware of the counter-accident behavior. * importance, take active action and enter into the performance * The current state of war. 2. Formulate topics and arrange implementation for anti-accident drills * When formulating the topic of the activity, we should not only refer to the recent accident notifications issued, the anti-accident technical measure plan formulated by superiors, but also comprehensively consider the operation mode of the station that month and the technical level of the personnel. The topic should be targeted and comprehensive. In addition, in order to achieve the desired practical effect, the topic should be kept confidential and should not be told to the performers in advance. * Only in this way can real problems be exposed in actual drills, which will help to take corresponding measures so that the accident response capabilities of the personnel on duty can be continuously improved during the activities.

Counterattack* The purpose of accident anticipation activities is technical training and training of personnel. The key lies in the preparation arrangements and effective implementation methods before the activities. 1. Mobilize all employees to raise awareness and carry out counter-accident drills * Before the event, all personnel should be mobilized to clarify any vague understandings in their minds and make everyone truly aware of the counter-accident behavior. * importance, take active action and enter into the performance * The current state of war. 2. Formulate topics and arrange implementation for anti-accident drills * When formulating the topic of the activity, we should not only refer to the recent accident notifications issued, the anti-accident technical measure plan formulated by superiors, but also comprehensively consider the operation mode of the station that month and the technical level of the personnel. The topic should be targeted and comprehensive. In addition, in order to achieve the desired practical effect, the topic should be kept confidential and should not be told to the performers in advance. * Only in this way can real problems be exposed in actual drills, which will help to take corresponding measures so that the accident response capabilities of the personnel on duty can be continuously improved during the activities.

Regarding the arrangement of implementation steps, there are usually the following aspects:: (1) Setting of faults In order to fully examine the comprehensiveness of the on-duty personnel's consideration of problems in accident handling and their ability to respond to complex accidents, faults often cannot be set too simply. The accident can be artificially magnified. Multiple faults should be set, such as: A phase-to-phase short circuit fault occurs on a 10 kV line. The setable fault points are:: The 10 kV line switch refused to operate, and the overcurrent protection outlet pressure plate on the low voltage side of the main transformer failed to operate, etc. In addition, since the power plant equipment is all in operation, the fault setting can only be done by clicking on it. However, the sound and light signals, trip switches, and protection action tags when the accident occurs should be clearly marked one by one, unless it is for some need (such as protection failure, etc.). (2) Supervision arrangements at the accident handling site In order to reproduce the real situation of the accident handling site to the greatest extent, a simulated dispatch can be temporarily arranged to be responsible for collecting the accident symbols reported by the on-duty personnel when the accident occurs and coordinating the relevant handling of the accident (here, the simulated dispatch is not responsible for the command and processing of the accident, and it is left to the on-duty operators to handle it themselves). This is mainly to examine the standardization of the on-duty personnel's reporting and dispatching, their proficiency in mastering relevant procedures and systems, and their ability to independently analyze, judge, and handle accidents based on the accident symbols. For example, what should be reported to dispatch when an accident occurs, what operations can be performed in advance and reported afterwards during accident handling, etc. During the entire accident handling process, all accident-related inspections, reports, operations (to the point of course), etc. performed by the handlers should be supervised and recorded by dedicated personnel for post-activity assessment, analysis and summary. In order to improve the ability of on-duty personnel to handle accidents quickly and accurately, activities should also have a certain time limit. Otherwise, the processing process will be too long and will not meet the objective requirements of actual accident handling in the future.

(3) Filling in records after accident handling. Only filling in relevant records in a timely and correct manner can provide a reliable basis for subsequent analysis of the entire accident handling process. Records that should be filled in after the accident is handled include:: Switch accident tripping records, relay protection action records, duty logs, etc. The duty log mainly fills in the relevant operations and reports performed in the accident handling.

3. Act* Evaluation, analysis and summary of the entire counter-attack performance * After the activity, all station personnel should be organized to participate in an evaluation analysis summary meeting to evaluate the performance of those who participated in the anti-accident drill. * personnel, during this counterattack exercise * Evaluate the performance in the activity and point out that the entire performance * Improper or wrong practices during the process, or even omissions, will ultimately affect the entire countermeasures performance. * Questions, correct and complete handling steps are proposed, and then everyone discusses them fully to identify existing problems, summarize experiences and lessons, and continuously improve the response and analysis and processing capabilities of the personnel on duty to different accidents to prevent similar accidents from happening again.