Safety evaluation of hydroelectric power plants
Safety evaluation of hydroelectric power plants includes three major aspects: production equipment, labor safety and operating environment, and safety management. Below I have compiled articles about the safety evaluation of hydropower plants for everyone’s reading and communication only~
1. Safety evaluation of production equipment
(1) Water turbine
1. The overall operating condition of the water turbine
(1) Whether the swing value of the water guide bearing of the water turbine is within the standard range.
(2) Whether the vibration value at the water guide bearing is within the standard range.
(3) During the operation of the unit, whether the monitoring of the volute water pressure, top cover water pressure, tail water vacuum, etc. is complete.
(4) During the opening or closing process of the water guide vane of the operating unit, whether the guide vane relay piston is stuck or in other abnormal conditions, whether the control ring, arm, etc. rotate flexibly, and whether the control ring Is there any jumping phenomenon?
(5) When the unit is running, are there any abnormal water leaks on the top cover flange surface, water guide vane sleeve, etc.
2. Technical working conditions of the turbine body
(l) Runner. ① Whether the cavitation and wear conditions (cavitation, wear area, depth) of the runner blades are serious, and whether there are cracks and other defects in the runner blades and the welds connecting the upper crown, lower ring and blades. ② Check whether the fastening screws of the drain cone have fallen off individually and whether the reinforcement welds have cracked. ③ Whether the runner blades are cracked or deformed, and whether the installation of the connecting bolts between the runner and the turbine shaft meets the requirements of the "Technical Specifications for Electric Power Construction and Acceptance"; ④ Whether the clearance between the upper and lower labyrinth rings of the runner is within the design allowable range .
(2) Water guiding mechanism. ①Condition of water guide leaves. Whether the water guide vane wear and back surface cavitation (cavitation area, depth, etc.) are serious; whether the water guide vane sealing surface is intact and whether the end face and elevation clearance values ??are out of tolerance. ③Guide vane relay. Whether the levelness of the guide vane relay meets the requirements and whether the anchor bolts are loose; whether the action of the relay is flexible and whether the amount of oil leakage exceeds the standard; whether the pressing stroke of the relay is within the specified value; whether the guide vane relay with pin spindle Check whether the locking device of the device can be put in and removed normally. ③ The double-arm connecting bolts are tightened and not loose, and the shear pin and signaling device are intact.
(3) Bearing and spindle seal: ①Whether the water guide bearing has the following defects: oil leakage from the rotating oil basin; bearing temperature is too high or close to the limit, the cooler endangers safe operation; bearing bush is out of shape Cracks, etc. have not been completely dealt with; the bearing gap exceeds the standard; the contact point on the tile surface exceeds the specified range, and the local non-contact area exceeds the standard. ③The large shaft water seal does not spray water.
(4) Volute and draft tube: Whether the anti-rust layer on the surface of the volute is intact, whether there are defects in the splicing welds; whether cavitation and wear of the draft tube wall are serious; whether the cross air supply frame is intact , whether the root of the air supply tube is firmly fixed; whether the air supply device is put in normally.
3. Hydraulic device and speed control system
(l) Hydraulic device. ① Whether the oil collection tank and oil leakage tank are leaking, and whether the filter in the oil collection tank is defective; ② Whether the tightness of the pressure oil tank meets the requirements; ③ Whether there are hidden dangers in the oil pump and oil pump motor, whether the operation is normal, and whether the start and stop actions are Reliable; ④ Whether the action value settings of the safety valve, working oil pump, and backup oil pump meet the requirements; ⑤ When the oil pressure drops to the accident oil pressure, whether the emergency shutdown pressure relay can work normally according to the setting value requirements; ⑥ The automatic replenishment of the pressure oil tank Whether the oil level signaling device and action of the gas device and oil collection tank are accurate and reliable; ⑦ Whether the quality of the oil used in the hydraulic device meets relevant regulations; ⑧ Whether the indication of the oil level gauge of the pressure oil tank is accurate and whether the oil level is within the specified range ⑨Whether the pressure oil tank undergoes flaw detection tests on time.
(2) Speed ??regulator.
① Whether the electrical cabinet of the speed regulator has regular measurement and test records, and whether there are hidden dangers that affect the operation; ② Whether the operating power supply and backup power supply of the electrical cabinet can be automatically switched; ③ When the input signal of the speed measuring device disappears, whether the unit can protect the load it carries , does not affect the normal or accident shutdown of the unit; ④ Whether the speed regulator mechanical cabinet has regular test records and whether there are hidden dangers that affect the operation; ⑤ Whether the action of the electro-hydraulic converter is flexible and whether it is included in regular inspection and maintenance; ⑥ Speed ??governor Whether the start-up and shutdown times meet the requirements of the on-site regulations, and check them every six months; ⑦ Whether the speed governor is running stably and whether there is vibration or twitching; ⑧ Whether there is sticking or rust in the mechanical part of the speed governor, and whether the quality of the turbine oil is Passed; ⑨ Whether the emergency stop solenoid valve operates correctly and whether it is inspected every six months; ⑩ During load shedding, whether the dynamic quality of the speed regulator meets the requirements;
11 Flying pendulum motor and flying pendulum: Flying pendulum motor Whether the temperature rise is too high; whether the fly pendulum motor and fly pendulum are concentric and whether the rotation is flexible; whether the fly pendulum needle plug is stuck; whether the radial and axial swings of the centrifugal fly pendulum exceed the standard; whether there are cracks in the fly pendulum steel belt, etc. defect. 12. Whether the internal resistance and insulation resistance of the electro-hydraulic converter line meet the linearity requirements; 13. Whether the characteristics of the electro-hydraulic regulating device meet the linearity requirements; 14. Whether the speed dead zone meets the standards; 15. Whether the regulating device has resistance under normal operating conditions of the power station. The ability of various interference sources; 16. Whether the insulation between each circuit and between the circuit, the chassis and the earth meets the requirements.
4. Main valve and hydraulic device
(1) Main valve. ① Whether the main valve body has hidden dangers and important defects that endanger safe operation; ② Whether the main valve can be closed by running water; ③ Whether the bypass valve and bypass hand valve have hidden dangers and defects that endanger safe operation; ④ Whether the main valve relay has Hidden dangers, defects, and leakage; ⑤ Whether the switching time of the main valve meets the regulatory requirements; ⑥ Whether the main valve locking device is normal and whether the lock can be put in normally; ⑦ Whether the main valve is closed tightly and does not leak; ⑧ Whether the hydraulic pressure and control valve of the operating system are There is sticking phenomenon.
(2)Hydraulic device. ① Whether the oil collection tank and oil leakage tank are leaking, and whether the filter in the oil collection tank is defective; ② Whether the tightness of the pressure oil tank meets the requirements; ③ Whether there are hidden dangers in the oil pump and oil pump motor, whether the operation is normal, and whether the start and stop actions are Reliable; ④ Whether the action value settings of the safety valve, working oil pump, and backup oil pump meet the requirements; ⑤ When the oil pressure drops to the accident oil pressure, whether the emergency shutdown pressure relay can work normally according to the setting value requirements; ⑥ The automatic replenishment of the pressure oil tank Whether the oil level signaling device and action of the gas device and oil collection tank are accurate and reliable; ⑦ Whether the oil quality used in the hydraulic device meets relevant regulations; ⑧ Whether the indication of the oil level gauge of the pressure oil tank is accurate and whether the oil level is within the specified range ;⑨Whether the pressure oil tank undergoes flaw detection tests on time.
5. Auxiliary equipment
(1) Oil system. ① Whether the gear oil pump supplies oil and operates normally. ② Whether the press oil filter has defects and hidden dangers that endanger safe operation; ③ Whether the oil pump of the vacuum oil filter machine has defects and hidden dangers that endanger safe operation, and whether the vacuum pump has serious defects that endanger safe operation; whether the oil quality and oil quality of the vacuum pump lubrication tank Whether the position is normal, whether the water quality and pressure of the vacuum pump cooling water meet the usage requirements; ④ Whether the oil quality in the net oil tank is qualified, and whether oiling tests are carried out regularly; ⑤ whether the fire protection facilities of the oil system are complete and reliable; ⑥ whether there are leaks in pipes and valves.
(2) Air system. ①Gas storage tank. Whether the main body has serious defects, whether it is inspected regularly, whether there is a phenomenon that the defect continues to operate without being dealt with; whether the safety valve of the gas storage tank can operate normally, and whether it is inspected regularly. ②Air compressor and accessories. Whether the air compressor body has serious defects and hidden dangers that endanger safe operation, whether the backup air compressor can be put into normal operation, whether the air compressor sewage system can work normally, and whether the safety valves at all levels of the air compressor can operate normally. ③ Whether there is leakage in the pipeline valve.
(3) Technical water supply system.
① Whether the main and backup water sources of the technical water supply system are safe and reliable, and whether the water quality meets the requirements; ② Whether the water pressure and flow rate of the cooling water of the unit meet the design requirements; ③ Whether there are defects in the water filter and filter screen, and whether the two sets of water filters can interact with each other. Spare; ④ Check whether the drainage pump is defective, whether the spare water pump can be put into normal operation, whether the oil quality and oil level of the water pump bearing lubricating oil are normal; ⑤ whether the jet pump can maintain stable and continuous normal drainage ; ⑥ Whether there are defects in the centrifugal water pump, whether the backup pump can be put into normal operation, whether the oil quality and oil level of the water pump bearing lubricating oil are normal; ⑦ whether there are serious defects in the deep well water pump, whether the supply of bearing lubricating water is normal, and whether the lubricating oil level is normal Whether the quality and oil level are normal; ⑧ Whether the jet pump can work normally and whether it can maintain continuous and stable drainage; ⑨ When the water level in the water collection well exceeds the limit, whether the alarm device can operate normally; ⑩ Whether there are leaks in pipes and valves.
(2) Hydrogenerator
1. Overall operating conditions of the hydrogenerator
(l) Whether the swing values ??of each part of the hydrogenerator are correct within the standard range.
(2) Whether the vibration values ??of various parts of the hydraulic generator are within the standard range.
(3) Whether the inlet and outlet of the cooling water supply pipeline of the unit are smooth and whether the water supply pressure meets the requirements of the regulations.
(4) Whether the stable operating temperature of the bearings of each part of the unit is within the allowable range of the regulations.
(5) Whether the operating temperatures of the generator stator winding, iron core, hot air, cold air, etc. are within the allowable range of the regulations, and whether there are local overheating or abnormal temperature rises in the stator and rotor.
(6) When the unit is running, is there any oil dumping phenomenon in the lower oil guide box?
(7) High-pressure oil top rotor device (braking device): ① Whether each brake leaks oil and whether the tightness meets the standard requirements; ② Whether the gap between the brake and the rotor brake ring meets the design requirements; ③ Whether there are leaks in the brake system pipelines, valves, etc.; ④ Whether the high-pressure oil top rotor device can lift the rotor smoothly before starting the machine, whether the piston can automatically reset, and whether the brake can be accurately applied and automatically reset when the machine is stopped.
2. Main technical conditions of the generator body
(l) Whether the magnetic pole keys of each magnetic pole of the generator rotor are loose and whether the spot welding is firm.
(2) Whether the rotor fan has cracks or other defects.
(3) Are there any hidden dangers in the brake ring and fixing screws at the bottom of the rotor?
(4) Whether the main shaft journal of the generator that cooperates with the thrust head snap ring has been inspected for flaw detection during the recent overhaul or minor repair, and whether the flaw inspection report and records are complete.
(5) Technical status of each bearing. ①Thrust bearing (Class A alloy tile): Whether the surface of each tile is intact, whether the force on each tile is uniform, whether the contact point and local non-contact area of ??the tile surface are within the standard range; Class B elastic metal plastic tile: each tile Whether the tile surface is intact, whether there are defects such as detachment, shelling, cracks, etc.; whether the stress on each tile is uniform, and whether the wear value of the tile surface exceeds the standard. ② Whether the tile surface of the guide bearing (upper guide and lower guide) is intact and whether there are defects such as detachment, shelling, cracks, etc.; whether the contact points on the tile surface are within the specified range, and whether the local non-contact area exceeds the standard; the bearing pad clearance of each guide bearing Check whether the adjustment value meets the design requirements. ③Other bearing-related items: Whether there is leakage in each bearing oil tank; whether there is leakage or other defects in each bearing oil cooler; whether it is cleaned, inspected and tested regularly according to regulations; whether the bearing oil level meets the design Requirements, whether the oil level indication is true.
3. Planned maintenance
Whether the planned overhaul or minor repair of the turbine generator is overdue, and the technical condition of the equipment is such that it is not due for repair.
4. Technical information and equipment markings
(1) Equipment number and markings. ① Whether the valve number and switch direction are complete and clear; ② Whether the pipe coloring and color ring, medium name and flow direction mark are complete and clear; ③ Whether the name, number and rotation direction of the main equipment and auxiliary equipment are complete and clear; ④ Controls on the operation panel and instrument panel Whether the names of switches, instrument fuses, and secondary circuit connecting pieces are complete and clear, and whether there is a red line at the rated value of the instrument.
(2)Technical information. ① Whether the summary of major and minor equipment repairs is timely and complete; ② Whether the technical files of the equipment are complete and the content is complete and accurate.
(3) Safety evaluation of electrical equipment (see Section 7)
(4) Safety evaluation of thermal equipment
1. Generator part< /p>
(l) Whether the oil level pressure gauge of the generator oil switch is put in normally.
(2) Whether the oil levels of each guide bearing and thrust are normal, whether the oil level signal action is sensitive, accurate, and the signal transmission is normal.
(3) The generator monitors the air pressure and brake air pressure to see if they are turned on normally, and operates to shut down.
(4) Whether the generator temperature and oil pressure protection devices are put in normally.
(5) Whether the inlet and outlet rheumatism and temperature difference signals are input normally.
(6) Whether the stator coil and iron core temperatures are normal.
(7) Whether the rotor coil temperature gauge is put in normally.
(8) Whether the pressure of cooling water in and out of the generator is normal.
(9) Whether the oil temperature monitoring meter of each bearing is put in normally.
2. Turbine part
(l) The temperature of the upper guide and thrust bearing, the lower guide, and the water guide, inspection of each unit, and whether the governor oil pressure is put into operation normally, Check whether there is a signal from the pressure oil tank of the speed regulator and act to shut down the machine.
(2) Whether the oil temperature gauge of the return tank of the pressure oil tank is put in normally.
(3) Whether the low oil pressure protection is put in normally and regular tests are carried out according to regulations.
(4) The tail water vacuum pressure gauge monitors whether it is put in normally.
(5) Whether the pot shell pressure signal and pressure monitoring are put in normally.
(6) Whether the steel pipe pressure signal is input normally.
(7) Whether the cooling water pressure signal is input normally.
(8) Water system (pressure gauge). ① Whether the pressure gauge of the cooling water main pipe is put in normally; ② Whether the water pressure gauge on the inlet side of the bearing and the water pressure gauge before and after the water filter are put in normally; ③ Whether the water pressure gauge on the top cover and the water seal pressure gauge are put in normally; ④ The water guide cooling water Pressure, whether the pressure of down-guide, up-guide and thrust cooling water is put in normally.
(9) Oil system. ① Whether the oil filter pressure gauge is normal; ② Whether the oil level, pressure monitoring and pressure signal of each unit's oil tank (tank) are put in normally; ③ Whether the oil level monitoring and pressure monitoring of the main valve pressure tank of the unit are put in normally; ④ Relay oil Whether the pressure is turned on normally; ⑤ Whether the oil level signal of the thrust bearing and down guide bearing is turned on normally; ③ Whether the oil level signal of the return oil tank is normal; ① whether the signal of the main valve oil pressure device is normal; ③ whether the oil pressure of the governor and electro-hydraulic converter is normal Normal; ② Whether the inlet and outlet pressure of the oil pump outlet oil filter is normal.
(10) Steam system. ① Whether the automatic backup pressure of the air compressor is put in normally; ② Whether the pressure position of the low-pressure tank pressure alarm is activated normally; ③ Whether the outlet pressure of the air compressor is normal; ④ Whether the high-pressure gas storage monitoring pressure and control pressure are put in normally; ⑤ The speed-regulating oil tank is replenished Check whether the air pressure monitoring alarm and automatic air replenishment are normal.
(11) Auxiliary equipment. ① Whether the maintenance jet pump of each generator is put into normal operation; ③ Whether the maintenance water pump is put into normal operation; ③ Whether the water collection well jet pump is put into normal operation; ④ whether the pumping pressure of the deep well pump is normal; ⑤ whether the vibration monitoring of the unit is normal.
3. Thermal work and other parts
(l) Whether the names and labels of the power switch, fuse, connecting piece, and terminal strip on the thermal work panel (cabinet) comply with Regulation.
(2) Whether there is an operation management system for the operation and protection of thermal power supply, automation, and the insertion and withdrawal of signal connection pieces.
(3) Whether the input rate of thermal automatic equipment reaches 80%.
(4) Whether the input rate of thermal protection reaches 100%.
(5) Whether the thermal instrument calibration rate reaches the target.
(6) Whether the thermal instrument qualification rate before calibration reaches the target.
(7) Whether the equipment ledger, maintenance technical data, and rules and regulations are complete.
4. Main transformer
Whether the main transformer temperature gauge is put in normally.
(5) Safety evaluation of hydraulic structures
1. Reservoir dispatching and water management, water level observation
(l) Whether the water level station meets the requirements of hydropower station operation requirements and water level observation standards.
(2) Whether water level observation equipment, water gauges, various water level gauges, and the automatic reporting system in the area are normal.
(3) Water level observation and calculation of results.
(4) Reservoir dispatching.
(5) Collection and compilation of hydrometeorological data.
2. Hydropower plant dam
(l) Dam safety inspection status.
(2) Whether the basic condition of the dam meets the regulations.
(3) Whether the technical condition of the dam body meets the requirements.
(4) Whether the longitudinal and transverse joints of the dam body meet the requirements.
(5) Whether the conditions of the mountains and bank slopes at the dam heads on both sides meet the requirements.
(6) Whether the working condition of the corridor within the dam meets the requirements.
(7) Whether the technical condition of the dam’s observation facilities meets the requirements.
(8) Whether the main technical documents of the dam are complete.
3. Water diversion structure of hydropower plant
(1) Whether the operating conditions of the water inlet fence and sewage shed meet the requirements.
(2) Whether the operating condition of the gate meets the requirements.
(3) Whether the leakage flow rate of the diversion tunnel lining meets the requirements.
(4) Whether the pressure regulating valve of the pressure regulating well meets the requirements for water flow stability and surge when the load changes.
(5) Whether the operating conditions of the pressure steel pipe meet the requirements.
(6) Whether the safety condition of the pressure forecourt diversion channel sedimentation tank meets the requirements.
(7) Whether the performance results of observation facilities for the safe operation of water diversion buildings meet the requirements.
(8) Whether the collection and storage of the main technical documents and drawings of water diversion buildings meet the requirements.
4. Water and electricity tailwater buildings
(l) Whether there are hidden dangers in the basic working conditions.
(2) Whether the anti-seepage, anti-scouring and anti-siltation conditions of the tailrace building meet the requirements.
(3) Whether the operating conditions of the tailrace gate meet the requirements.
(4) Whether the main documents, drawings and related records are complete.
5. Flood prevention facilities
(l) Whether it is possible to study flood prevention work in advance before the flood, formulate measures, and implement flood prevention duty and rescue organizations.
(2) Whether the hydrology and water regime forecasting work during the flood season can be carried out effectively.
(3) Whether the operation conditions of various gates during the flood season meet the requirements.
(4) Whether the transportation and communication systems are guaranteed during the flood season.
(5) Whether the pre-flood inspection of the hydropower plant is carried out in accordance with regulations.
(6) Whether the responsibility system for the management and maintenance of flood control equipment is implemented.
(6) Computing execution monitoring system
(1) Evaluate whether the usability indicators of internal computer monitoring meet the specified requirements.
(2) Whether the accuracy and reliability of the switching quantities (electricity and non-electricity) monitored and recorded by the computer monitoring system during the evaluation period meet the specified requirements.
(3) Whether the monitoring system can print records automatically or in real time according to the instructions of the operator. Whether the various operations, accidents and fault records of the main equipment, as well as relevant parameters and tables, can be printed in real time.
(4) Whether the monitoring system uses increase and decrease commands or changes in given values ??to adjust the output of the unit.
(5) Whether the monitoring system can target water saving and multiple power generation according to the load curve or predetermined adjustment principle, or the active power given value sent in real time by superior dispatch, and take into account the minimum rotation Standby, determine the startup combination method and optimal load distribution under the constraints of avoiding vibration, cavitation and other conditions.
(6) Whether the monitoring system can adopt computer network data communication and realize telecontrol function at the same time, or the power plant monitoring system and the superior dispatching automation system can use telecontrol protocol interconnection to realize the remote control of the power plant by superior dispatching. Function.
(7) Whether the monitoring system can perform the following management:
1) Automatically count the operating hours of the main equipment, the number of switching times, the number of accidents and other data, and establish the operation of the main equipment file.
2) Establish a historical database.
3) Edit and print operation tickets.
4) Store the relay protection setting value.
5) Provide guidance on accident handling and other operational management.
(8) Whether the monitoring system alarm is complete and normal.
(9) During the evaluation period, monitor whether the communication within the system is normal.
(10) Check whether the self-diagnosis, self-recovery and power-down protection of the monitoring system are complete and normal.
(11) Whether the technical information is complete and complete.
(12) Whether the monitoring system equipment signs are complete and unified, and whether the warning signs or safety signs are complete.
(13) Whether the computer environment conditions meet the specified requirements.
(I4) Whether electromagnetic interference and electromagnetic compatibility meet the specified requirements.
(15) Whether the division of responsibilities of the monitoring system is complete, and whether operation management, maintenance management, and technical management are clear and complete.
(16) Check whether the security of the monitoring system meets the specified requirements.
(17) Whether the grounding of the computer monitoring system meets the requirements.
(18) Whether the cable laying and cross-section selection of the monitoring system meet the requirements.
(l9) Monitor whether the system power supply is safe and reliable.
2. Labor Safety and Working Environment Assessment
(1) Labor Safety
1. Electrical Safety
(l) Electrical Safety Whether appliances, such as insulated operating rods, insulated gloves, insulated boots, electroscopes, portable grounding wires, etc., meet safety requirements.
(2) Whether hand-held power tools, such as electric drills, electric grinding wheels, etc., meet safety requirements.
(3) Whether mobile power tools, such as water pumps, grinding saws, air compressors, etc., meet safety requirements.
(4) Are there specific regulations on installing leakage detectors on hand-held power tools and mobile electric machines, and whether they are strictly implemented.
(5) Whether the power and lighting distribution boxes meet safety requirements.
(6) Whether the parts of production and non-production motors and electrical appliances that should be connected to zero or grounded have reliable protection to zero or ground.
(7) Whether there is a management system for temporary power supply at the construction site, and whether the temporary power supply on site meets safety requirements.
(8) Whether electrical workers are generally familiar with electric shock first aid and cardiopulmonary resuscitation.
2. Working at heights
(l) Whether safety belts (in-process supplies) and their storage meet safety requirements.
(2) Whether the foot buckles and lifting plates (in-process supplies) and their storage and storage meet safety requirements.
(3) Whether the scaffolding and safety nets erected on site and their storage and storage meet safety requirements.
(4) Whether the mobile stair platform (including ladders, high stools and other supplies) and its storage and storage meet safety requirements.
(5) Whether the shape, material, and current status of the helmet, and the distribution and use of personal protective equipment meet safety requirements.
(6) Whether the scaffolding workers have undergone special training and examinations, hold certificates, and undergo re-examinations on schedule.
3. Lifting operation safety
(l) Whether all types of cranes (gantry, bridge cranes, trucks, crawler and other mobile cranes and bucket arm trucks) comply with the safety requirements Require.
(2) Whether various electric hoists, electric winches, and vertical lifts (carrying objects) meet safety requirements.
(3) Whether the manual hoist (inverted chain), jack, and hand winch meet safety requirements.
(4) Whether the lifting wire ropes, fiber ropes (hemp ropes, brown ropes, cotton ropes), hooks, chucks, cups, rings, etc. are regularly inspected and tested as required.
(5) Whether the crane driver has undergone special training and examination, holds a certificate, and undergoes review on schedule.
(6) Whether the elevator (for carrying people and goods for production) meets safety requirements.
(7) Whether there is an elevator management system and maintenance responsibility system, and whether they are strictly implemented.
4. Welding
(l) Whether the storage spaces for oxygen cylinders, acetylene cylinders and other high-pressure cylinders meet fire and explosion-proof requirements.
(2) Whether AC and DC welding machines meet safety requirements.
(3) Whether electric welders and gas welders have undergone special training and examinations, have certificates, and undergo reexaminations on schedule.
(4) Whether the storage of calcium carbide buckets meets safety requirements.
5. Machinery
(l) Whether the drilling machine (fixed or mobile) meets safety requirements.
(2) Whether the grinder (stationary) meets safety requirements.
(3) Whether the punching, shearing and pressing machinery meets safety requirements.
(4) Whether metal cutting machine tools (lathes, milling machines, planers, grinders, etc.) meet safety requirements.
(5) Whether the safety guard and protective fence of the mechanical rotating part meet the safety requirements.
6. Whether the live work complies with the regulations
7. Whether the blasting and crimping complies with the regulations
(2) Working environment
1. Production area lighting
(l) Whether the control room lighting meets the design and on-site safety requirements.
(2) Whether the lighting of the main factory building meets the design and site requirements.
(3) Whether the lighting in the busbar room and switch room meets the design and on-site safety requirements.
(4) Whether the lighting of the booster station meets the design and on-site safety requirements.
(5) Whether the stairwell lighting meets the design and on-site safety requirements.
2. Stairs in the production area
(1) Whether the steel inclined ladder meets the national standard safety requirements.
(2) Whether the steel ladder meets the national standard safety requirements.
(3) Whether the steel platform (including walking trails) meets the national standard safety requirements.
3. Floor slabs and floors in the production area
(1) Whether the railings, covers, and guards of the holes in the floor slabs and ground are complete and meet the design and site safety requirements.
(2) Are there any obstacles, industrial waste, etc. in the driveways and sidewalks of the factory that may easily cause falls or bruises?
4. Noise prevention
(l) Whether the noise in the duty room meets the standards.
(2) Whether the noise source point is equipped with sound insulation device and whether the effect is good.
5. Traffic safety
(1) Whether all types of motor vehicles meet safety requirements.
(2) Whether there is a motor vehicle management system, whether it is implemented, and whether the motor vehicle driver holds a certificate or driving license.
6. Fire and explosion prevention
(l) Whether the fire prevention responsibility system at all levels is sound.
(2) Whether a full-time and mass firefighting organization has been established, and whether regular training or training is provided.
(3) Whether there is an inventory of fire equipment configuration, whether there is a regular inspection system, and whether it is strictly implemented.
(4) Whether there are obvious and standard fire prohibition signs in areas and parts where fire is prohibited.
(5) Whether there is a hot work management and hot work ticket system in the no-fire zone (including cable mezzanine) and whether it is implemented.
(6) Whether the fire protection department has a remote starting device, whether there is a regular test system, and whether it is implemented. When there is a power outage in the entire plant, whether there is an external power supply for the fire pump or other measures to ensure that the fire water source is not interrupted.
(7) Whether the fire-fighting water facilities and systems (including high-level water tanks) are complete and in good standby condition.
(8) Whether the fire escape is clear.
(9) Whether there is a sound system for the management and storage of flammable and explosive items and it is implemented.
(10) Whether warehouses and building facilities storing flammable and explosive items meet safety requirements.
(11) Whether the factory is equipped with positive-pressure fire breathing apparatus for fire-fighting in case of cable fire.
7. Earthquake resistance
(l) Whether the unit that sets up earthquake monitoring points insists on monitoring according to regulations, and whether the records are correct and complete.
(2) Whether the main factories and buildings have undergone earthquake resistance appraisal.
(3) Whether strengthening measures have been taken for buildings that failed the seismic appraisal.
(4) Whether a disaster prevention and relief measures plan has been formulated.
(5) Whether anti-seismic measures have been taken for the main transformer, battery and other equipment according to the earthquake forecast and the requirements of relevant departments.
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