Various equipment inspection standards (recommended for saving)

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1. Foundation
Level: ① Class 1 – equipment in good condition; ② Class 2 – equipment in fair condition; ③ Equipment in poor condition
Class 1: The foundation is stable, with no corrosion, tilting, or cracks. The connections are secure, with no loosening, breaking, or detachment.
Class 2: The foundation is stable, with no corrosion, tilting, or cracks. The connections are secure, with no loosening, breaking, or detachment.
Equipment in poor condition: There is corrosion, tilting, cracking, loosening, breaking, or detachment.

2. Structure
Class 1: The structure is intact, all components are present, and wear, corrosion, and deformation are within acceptable limits.
Class 2: The structure and most components are intact; although there are some defects, they do not affect safe operation.
Equipment in poor condition: The structure and components are incomplete, which affects safe operation.

3. Lubrication
Class 1: Lubrication is adequate, with no leakage of oil, water, air, or other substances.
Class 2: Lubrication is generally satisfactory, with no serious leakage.
Equipment in poor condition: There is serious leakage.

4. Measuring instruments and protective devices
Class 1: The measuring instruments are accurate and reliable, and all safety protective devices are in place.
Class 2: The main measuring instruments and safety protective devices are present and reliable.
Equipment in poor condition: These instruments and devices are either missing or unreliable.

5. Equipment precision and operational efficiency
Class 1: The equipment operates normally, and its precision meets the specified requirements, i.e., the original factory specifications.
Class 2: The equipment operates normally, and its precision meets the technical requirements of the process.
Equipment in poor condition: The equipment does not operate properly and fails to meet the technical requirements of the process.
Note: If any one of the five items is in poor condition, the equipment is considered to be in poor condition. 　　In recent years, many enterprises have established their own standards for the condition of equipment, in line with corporate standard formats, providing a more scientific and reasonable basis for determining and calculating the equipment integrity rate. At the same time, enterprises define the equipment integrity rate as the proportion of all functional production equipment within a company to the total amount of production equipment. The calculation formula is: Equipment availability rate = (Number of functional production equipment units/Total number of production equipment units) × 100%. It is clear that in order to accurately determine the equipment availability rate, equipment managers must first establish standards for the functionality of various production equipment in their company; only then can they carry out thorough inspections and evaluations based on those standards. In other words, the standard of equipment integrity is the sole criterion for assessing equipment quality, as well as the fundamental basis for enterprise equipment management. Without standards, it is impossible to check and assess the condition of equipment; just as you cannot determine whether Beijing is in the east or the west, you cannot succeed in doing so. Statistical standards for equipment integrity rate I. Definition of equipment integrity rate: The proportion of production equipment that is in good condition among all production equipment; it is an important indicator that reflects the technical condition of a company’s equipment and serves to assess the quality of equipment management. The calculation formula is: Equipment availability rate = Total number of functional devices / Total number of production devices × 100% = ×100%. The total number of devices mentioned in the formula includes those that are in use, those that are not in use, and those that are stored. The standards for equipment integrity serve as the fundamental basis for equipment management. They provide a basis for assessing whether equipment is in good technical condition, and they are also the foundation and prerequisite for calculating the rate of equipment integrity. 　 Statistical standards for equipment leakage rates 　　 I. Classification of sealing points and scope of statistics 　　1. Dynamic sealing: The sealing between two components that are in continuous motion, rotation, or reciprocation in various mechanical and electrical devices (including machine tools) falls under dynamic sealing. Seals for components such as compressor shafts, pump shafts, and rotating shafts of various tanks all fall under dynamic sealing. 　　2. Static seal: The seal between two components that do not move relative to each other during operation, in equipment (including machine tools), industrial heating systems, as well as their associated pipelines and accessories, is considered a static seal. Such as flanges on equipment pipelines, various valves, plug plugs, and union joints ； Oil gauges and auxiliary pipelines on pump equipment ； Transformers, oil switches, and cable terminations in electrical equipment ； Instrument orifice plates, control valves, auxiliary leads ； The connection points with other devices are all static seals. II. Standards for counting sealing points: 1. Standards for counting dynamic sealing points: A seal between two components that move continuously, rotate, or reciprocate is counted as one dynamic sealing point. 　　2. Statistical standard for static sealing points: One joint of a static sealing point is counted as one static sealing point. For example, a pair of flanges, regardless of their size specifications, counts as one sealing point. A valve is generally considered to have four sealing points; if there is a plug behind the valve or if it is directly connected to a vent, one additional point should be counted for each of those cases. A threaded union counts as three sealing points. Special areas such as the bolt holes of the connection flanges are connected to the inside of the equipment; aside from the joint surface which serves as one sealing point, each bolt hole requires its own sealing point. 　　3. Criteria for counting leakage points: One leakage is counted as one leakage point; whether it occurs at a sealing point or due to weld cracks, porosity, corrosion, or other reasons, it is all included in the count of leakage points. 　　Formula for calculating leakage rate: Leakage rate = (Number of leakage points / Number of static seals) × 1000 (0/00). III. Inspection standards for dynamic and static seals: (I) Inspection standards for static seals: 1. At the joints of equipment and pipelines, there should be no coking, no smoking, no signs of leakage, no seepage, and no dirt when observed with the naked eye. 　　2. For instrument equipment as well as the conduits for steam and air, leak testing is carried out using soapy water at the welding points and other connection areas; no bubbles should be present ； For vacuum areas, use a thin piece of paper in a vertical manner. 　　3. At the joints of electrical equipment such as transformers, oil switches, and oil-impregnated paper-insulated cable ends, no leakage is visible to the naked eye. 　　4. For the oxygen, nitrogen, and air systems, check with soapy water to ensure there are no bubbles. 　　5. Steam system: no leaks and no scale visible to the naked eye. 　　6. For chemical systems such as acids and bases, there should be no signs of leakage, no residue, no scaling, no smoking, and no color change when tested with precision test strips. 　　7. For the water and oil systems, a visual inspection or tactile check shows no leaks or scale. 　　8. Various gearboxes, vertical shafts, and speed control levers of different machine tools show no obvious leakage upon visual inspection. Areas without seals, such as slide blocks and guide rails, are not subject to statistics or evaluation. 　　(II) Inspection standards for dynamic seals: 1. Slight oil leakage is permitted from the crankcase covers of various reciprocating compressors and from the shaft bearings of turbine compressors, but it must be wiped clean regularly. 　　2. For various types of reciprocating compressor packings and turbine compressor gas seals, no leakage is allowed at the beginning of operation, while slight leakage is permitted by the end of the operating interval. Various oil injectors can allow for slight leaks, but they must be cleaned regularly. 　　3. Bearings equipped with oil rings in various transmission devices must not leak oil, while bearings that require lubrication can allow slight leakage, which should be wiped clean at all times. 　　4. The allowable leakage rate for the water pump packing is no more than 60 drops per minute in the initial stage. 　　5. For all types of pumps that use mechanical seals, no leakage is allowed at the beginning of operation, and the leakage rate should not exceed 60 drops per minute at the end of operation. 　　6. If a water pump leaks in the form of a stream of water, it is considered to be a device with severe leakage. 　　(III) Standards for oil leakage from production equipment 1. Oil seepage: It is considered oil seepage when there are no visible oil stains, and no oil stains reappear within 5 minutes after the area has been wiped clean. 　　2. Oil leakage: There are visible oil stains, and in some cases oil droplets form; if oil stains or droplets reappear within 5 minutes after they have been wiped away, it is considered oil leakage. 　　3. Oil leakage point: A place with an obvious oil stain or an oil droplet is considered a leakage point. 　　4. Oil-proof equipment: Equipment that is oil-proof, with no leakage at both the static and dynamic joint surfaces. 　　5. General oil leakage equipment: Equipment that exhibits oil leakage but to a degree that is not severe is considered general oil leakage equipment. 　　6. Equipment with severe oil leakage: Any equipment in which the number of drops of oil per minute from a single leakage point exceeds 3 is considered to have severe oil leakage. I. Criteria for a proper centrifugal pump 　　1. It operates normally with good efficiency. 　　(1) The pressure and flow rate are stable, and the output meets the requirements of normal production or exceeds 90% of the capacity indicated on the nameplate ； 　　(2) The lubrication and cooling systems are unobstructed, and the oil cups, bearing housings, level gauges, etc. are all present and in good working condition. The lubricating oil (grease) selected meets the specified requirements. The bearing temperature meets the design specifications ； 　　(3) It operates smoothly without noise, and the vibration levels are within the specified standards ； 　　(4) No obvious leakage at the shaft seal: Packing seal leakage: No more than 20 drops per minute for light oil ； Heavy oil: no more than 10 drops per minute. 　　Mechanical seal leakage: Mild, not exceeding 10 drops per minute ； Heavy oil: no more than 5 drops per minute. 　　2. The internal components are undamaged and their quality meets the requirements. The material used for the main components, the radial and axial runout of the rotor, as well as the fit between various components, along with the wear limits, must all comply with the specified regulations. 　　3. The main unit is neat, with all accessories available and functional. (1) The pressure gauge should be calibrated regularly to ensure it is accurate and in good condition. The control and self-start interlock systems are sensitive and reliable. Safety guards, wheel screws, latch pieces, etc. are all available and functional ； 　　(2) The structure is complete; the fixing bolts, water retaining trays, etc. are all present and functional ； 　　(3) The foundation and pump base must be solid and intact; the anchor bolts as well as all connection bolts should be fully tightened, properly aligned, and secure ； 　　(4) The inlet valve, as well as the pipelines for lubrication and cooling, are installed properly, in a horizontal and vertical position, with no blockages or leaks. The check valve is flexible and easy to use ； 　　(5) The pump body is clean, with intact and aesthetically pleasing insulation and painting ； 　　(6) The auxiliary equipment is in good condition. 　　4. The technical documents must be complete and accurate; they should include (1) equipment records that meet the requirements of the headquarters’ equipment management system ； 　　(2) Regular condition monitoring records (major equipment) ； 　　(3) Equipment structure diagram and diagrams of vulnerable components. II. Standards for the proper condition of centrifugal compressors 　　1. Normal operation with good efficiency 　　(1) The equipment’s output meets the requirements of normal production, or reaches at least 90% of the capacity indicated on the nameplate ； 　　(2) The lubrication system, oil sealing system, cooling system, gas sealing, balance pipes, etc. are in good working condition and unobstructed. The lubricating oil and sealing oil selected meet the specified requirements. The temperature of the sliding bearings or rolling bearings is within the specified limits ； 　　(3) The high-level tanks for lubricating oil and seal oil, the axial displacement control system, the anti-surge measures, as well as the pressure and flow controls and the oil-gas differential pressure controls are all complete and functional. The alarm and shutdown controls should be sensitive and accurate ； 　　(4) It operates smoothly without noise; the shaft displacement is within the design specifications, and the vibration levels meet the standard requirements. 　　2. The internal components are undamaged and meet the quality requirements. (1) The material used for the components meets the design specifications ； 　　(2) The radial and axial runout of the rotor, the fit of various components during installation, and the wear limits must all comply with the provisions of the regulations. 　　3. The unit is well-organized, with all necessary accessories available and functional. (1) Pressure gauges, vacuum gauges, tachometers, thermometers, sensors, vibration probes, and safety devices should be calibrated regularly to ensure accuracy and reliability. The safety guards, coupling components, and turning gear are all available and in good working condition ； 　　(2) The structure is complete; the fixing bolts, waste discharge systems, and water release valves are all in good condition and functional ； 　　(3) The foundation and base should be solid and intact; the anchor bolts and all connection bolts must be fully tightened, in proper alignment, and securely fastened ； 　　(4) The import and export pipelines, valves, and associated piping are installed properly, with no blockages or leaks ； 　　(5) The machine should be clean, with no signs of impact, knocking, scraping, or biting on its inner and outer surfaces; the paint should be intact and in good condition. 4. The technical documents must be complete and accurate; they should include (1) equipment records, in compliance with the requirements of the headquarters’ equipment management system ； 　　(2) Regular condition monitoring records ； 　　(3) Regular lubricant analysis records ； 　　(4) Equipment structure diagram and diagrams of vulnerable components. III. Criteria for the proper condition of centrifugal fans: 1. Normal operation with good efficiency. (1) The equipment’s output meets the requirements of normal production, or reaches at least 90% of the capacity indicated on the nameplate ； 　　(2) The lubrication system and cooling system are in good working condition, and the lubricating oil used meets the specified requirements. The bearing temperature shall not exceed the specified design value ； 　　(3) It operates smoothly without noise, and the shaft displacement and vibration are within the specified limits ； 　　(4) The anti-surge system should be sensitive and reliable. 2. The internal components shall be free from damage, and their quality must meet the required standards. The selection of key components, as well as the radial and axial runout of the rotor, the fit between various components, and the wear limits, all must comply with the specified regulations. 　　3. The main unit is clean and well-equipped with all necessary accessories. (1) Pressure gauges, vacuum gauges, temperature sensor, vibration measurement probes, guards, wheel screws, pins, and other components are all available and in good working condition ； 　　(2) The structure is complete, with positioning pins, vent valves, etc. all present and in good working condition ； 　　(3) The foundation and base should be solid and intact; the anchor bolts as well as all connection bolts must be fully tightened, properly aligned, and secure ； 　　(4) The inlet and outlet valves, as well as the lubrication and cooling systems, are properly installed with no leaks ； 　　(5) The body is clean, with intact and attractive paint. 　　4. The technical documents must be complete and accurate; they should include (1) equipment records that meet the requirements of the headquarters’ equipment management system ； 　　(2) Regular condition monitoring and analysis records ； 　　(3) Equipment structure diagram and diagrams of vulnerable components. IV. Standards for the proper condition of tubular heating furnaces 　　1. Normal operation with good efficiency 　　(1) The equipment’s efficiency meets the requirements for normal production or reaches over 90% of its designed capacity, but it must not be operated beyond its capacity limits ； 　　(2) The indicators for flow rate, temperature, pressure, etc. in each section are accurate and sensitive, with flexible control; there is no severe coking or pressure buildup ； 　　(3) The furnace tubes show no localized overheating, cracks, bulging, or expansion of the tube diameter, and the bending of the furnace tubes is within acceptable limits ； 　　(4) The burner is free from coking and blockage. The automatic detection instrument provides accurate control, and the “three doors and one panel” design is flexible and easy to use ； 　　(5) The furnace body is airtight with no severe air leakage, and the outer wall temperature meets the design requirements ； 　　2. The furnace body and its internal components are free from damage, and their quality meets the requirements. (1) The material of each component, as well as the wall thickness of the elbow fittings and furnace tubes, and the quality standards for expansion joint installation must comply with the relevant regulations. Compression and heating-induced components such as hangers and tube sheets show no fractures or severe deformation ； 　　(2) The furnace walls and linings show no severe damage or detachment. 3. The main structure is in good condition, with all components present and functional. (1) The furnace body, convection section, ducts, and foundation are intact, with no significant tilting or cracks. The bolts in all areas are fully tightened, neatly arranged, and properly fastened, meeting the equipment’s seismic requirements ； 　　(2) Pressure, temperature, and flow meters should be calibrated regularly; safety measures such as sight holes, explosion-proof doors, access doors, fire suppression systems, emergency venting, and lightning protection grounding must be complete and reliable ； The lighting facilities are complete and functional ； 　　(3) Import and export pipelines, valves, elbows, welds, and the combustion system are free of blockages and leaks ； 　　(4) The auxiliary pipelines are installed properly; all connections should be secure, neat, and tightly fastened ； 　　(5) The auxiliary facilities of the furnace body are tidy, with complete and aesthetically pleasing insulation and painting. 　　4. The technical documents must be complete and accurate; they should include (1) equipment records that meet the requirements of the headquarters’ equipment management system ； 　　(2) Equipment structure diagram and pull-type accessory diagram. V. Standards for the integrity of towers 　　1. Normal operation with good performance 　　(1) The equipment’s performance meets the requirements for normal production or satisfies the design specifications ； 　　(2) Indicators such as pressure, pressure drop, temperature, and liquid level are accurate and sensitive, with flexible adjustment, and remain within acceptable ranges ； 　　(3) All entrances, exits, downcomers, etc. are unobstructed. 　　2. The components are free from damage and their quality meets the requirements. (1) Corrosion on the tower structure and its components should be within acceptable limits, and no major components inside the tower have fallen off ； 　　(2) The tower structure, components, lining, and welds have no defects exceeding acceptable limits, and there is no shedding of internal components ； 　　(3) The materials of various components inside and outside the tower, as well as the quality of their installation, shall meet the design and installation technical requirements or the provisions of relevant regulations. 　　3. The unit is clean and well-equipped with all necessary accessories. (1) Safety valves and various instruments should be calibrated regularly to ensure they are sensitive and accurate ； 　　(2) Safety facilities such as fire protection lines, vent lines, and emergency vent lines are complete and in good working condition; lighting facilities are adequate and in proper order. Valves throughout the system operate smoothly without any internal leaks, and lightning protection and grounding measures are reliable ； 　　(3) Ladders, platforms, and railings are intact and secure. Good insulation, with paint that is intact and attractive in appearance. Static seal with no leakage ； 　　(4) Foundation, steel structure. The skirt base is firm, with no uneven sinking. All fasteners are properly installed and secure, meeting seismic requirements. 　　4. The technical documents must be complete and accurate; they should include (1) equipment records that meet the requirements of the headquarters’ equipment management system ； 　　(2) Equipment classified as pressure vessels must obtain a pressure vessel use license ； 　　(3) Diagrams of the equipment structure and vulnerable components. VI. Standards for the integrity of shell-and-tube heat exchangers: 1. Normal operation with good performance. (1) The equipment’s efficiency meets the requirements of normal production, or it can reach over 90% of its designed capacity ； 　　(2) There are no leaks in the tubes and other internal components, nor any severe scaling or vibration. 　　2. All components are free from damage and their quality meets the requirements. (1) The materials used for various parts and accessories should comply with the design specifications, and their installation should adhere to the relevant regulations ； 　　(2) The erosion and corrosion of the shell and tube bundle are within acceptable limits, and the number of blocked tubes in the same tube side does not exceed 10% of the total. 　　(3) The partition has no severe twisting or deformation. 　　3. The main body is neat, with all components present and in good working condition. (1) The main body is neat, with proper insulation and paint application, giving it an attractive appearance ； 　　(2) The foundation and supports are intact and secure; all bolts are properly fastened, in good condition, and tightly secured, meeting seismic requirements ； 　　(3) There are no leaks in the shell components, as well as in various valves, flanges, front and rear end caps, etc ； 　　(4) Accessories such as pressure gauges, thermometers, and safety valves should be calibrated regularly to ensure accuracy and reliability. 　　4. The technical documents must be complete and accurate; they should include (1) equipment records that meet the requirements of the headquarters’ equipment management system ； 　　(2) Equipment that falls under the category of pressure vessels must obtain a pressure vessel use license ； 　　(3) Equipment structure diagram and diagrams of vulnerable components. VII. Standards for the integrity of pressure storage tanks (1) The product nameplate and registration nameplate are complete and clear ； 　　(2) The materials used for pressure storage tanks shall comply with the provisions of Chapter 2 of GB150-89 \"Steel Pressure Vessels\", and at the same time shall meet the requirements of Chapter 2 of the \"Regulations on Safety Inspection of Pressure Vessels by the Ministry of Labor\" ； 　　(3) The tank body has no severe deformation, no cracks, no bulges, and the degree of corrosion is within acceptable limits. Pressure storage tanks that have defects such as cracks, lack of fusion, or incomplete welding (exceeding specified limits) and cannot be repaired must undergo a safety assessment to determine that they are suitable for use before they can be put into service ； 　　(4) The supports are secure, the foundation is intact, with no unevenness or settlement. The bolts are fully engaged, neatly arranged, and tightly fastened, meeting the equipment’s seismic requirements ； 　　(5) The storage tank must not operate under conditions of overpressure, overheating, or overload ； 　　(6) For storage tanks with an inner lining and external insulation, the outer insulation covering the inner lining must be in good condition, without any cracks or peeling. 2. All accessories are present and function properly. (1) Safety valves should be regularly calibrated and maintained to ensure they are sensitive and reliable. (2) Pressure gauges, level gauges, wall temperature sensors, and vent valves (for storage tanks operating at high temperatures) must all be available and in working order ； 　　(3) Grounding, lightning protection, and anti-static measures must be complete, and regular inspections should be carried out ； 　　(4) Fire protection, safety, and sprinkler systems are complete. 　　3. The tank is clean and well-protected against corrosion. (1) The tank is clean, and its painting, insulation, or heat-resistant measures are in good condition and meet relevant regulations ； 　　(2) There are no leaks at the connections such as the manholes of the storage tank and the inlet and outlet valves ； 　　(3) The corrosion of the tank body and accessories is within acceptable limits. 　　4. The technical documents must be complete and accurate; they should include (1) equipment records that meet the requirements of the headquarters’ equipment management system ； 　　(2) Pressure Vessel Use License ； 　　(3) Equipment structure diagram and diagrams of vulnerable components. VIII. Standards for the integrity of storage tanks at atmospheric pressure 　　1. The tank body is intact, and its quality meets the required standards. 　　(1) The tank body shows no severe deformation; the degree of corrosion in all areas is within acceptable limits, and there are no leaks ； 　　(2) There is no uneven settlement of the tank foundation, and the inclination of the tank meets the specified requirements ； 　　(3) The floating roof tank has good sealing performance and can move up and down freely; its sealing components show no signs of aging, cracking, or loss of elasticity. 　　2. Complete accessories and flexible functionality 　　(1) The breathing valve, sealing gauge ports, ventilation pipes, drain holes, upper and lower entrances/exit points, drain valves, heating coils, level gauges, etc., are all present and functional, with no blockages or leaks ； 　　(2) The fire protection and lighting facilities are complete, in compliance with safety and explosion-proof regulations; the grounding resistance is less than 10 ohms, and the lightning protection and anti-static facilities are in good condition ； 　　(3) Floating roof tanks must be equipped with high liquid level alarms and automatic air supply valves. The ventilation holes are functional and easy to use. 　　3. The tank is clean and well protected against corrosion. (1) The internal anti-corrosion coating is intact; the external insulation is in good condition, and the paint is intact and attractive in appearance ； 　　(2) The tank should be clean; the drain wells must have water seals and be unobstructed, while the insulation wells should be clean and covered ； 　　(3) There are no leaks at the inlet and outlet valves and access holes; all bolts are fully tightened, in proper alignment, and securely fastened. 　　4. The technical documents must be complete and accurate; they should include (1) equipment records that comply with the company’s equipment management regulations ； 　　(2) Storage tank capacity table ； 　　(3) Foundation settlement test records (over 500 m3) ； 　　(4) Equipment structure diagram and diagrams of vulnerable components. IX. Standards for the integrity of steam turbines 1. Normal operation with good efficiency (1) Able to be brought online at any time, delivering a continuous output that meets the values specified on the nameplate or those approved by higher authorities, and operating properly under loads under various design conditions ； 　　(2) The thermal efficiency reaches the design level or the average advanced level of similar domestic units ； 　　(3) The unit vibration has reached the acceptable standard. Among them, the outward vertical direction meets good standards. The oil quality, temperature, and pressure meet the requirements of relevant regulations ； 　　(4) The integrity of the vacuum system, the vacuum level of the condenser, the exhaust steam backpressure, and the temperature difference between the upper and lower cylinders – all of these operational parameters meet the requirements specified in relevant regulations. 　　2. The internal components are undamaged and the quality meets the requirements. (1) The stationary and rotating blades as well as the nozzles are intact; erosion and corrosion are minor. The clearances between the stationary and rotating parts are within the specified range. The frequency of the rotating blades is within acceptable limits, or even if it is not, no issues such as blade deformation or breakage have occurred despite long-term operation ； 　　(2) The main components such as cylinders, rotors, diaphragms, and bearings have no defects that could affect safe operation ； 　　(3) The dynamic and static characteristics of the control system comply with the relevant regulations ； 　　(4) The measuring instruments for differential expansion, axial displacement, back pressure, and the temperatures of the inner and outer walls of the cylinder are complete, accurate, and reliable. 　　3. The main unit is neat, with all accessories present and functional. (1) All various protection devices and signaling devices are in good condition and operate correctly ； 　　(2) Various automatic control devices can be put into use at any time ； 　　(3) The steam turbine unit is properly insulated, with no leaks; the equipment and its surrounding area are clean, the lighting is adequate, and all necessary signs and labels are present in proper condition ； 　　(4) All heaters in the heating system are operating normally. The inspection rate for pressure vessels is 100%, and the repair rate is also 100%. 　　4. The technical documents must be complete and accurate; they should include (1) equipment records that meet the requirements of the headquarters’ equipment management system ； 　　(2) Condition monitoring records ； 　　(3) Equipment structure diagram and diagrams of vulnerable components. X. Standards for a proper boiler 　　1. Normal operation with good efficiency 　　(1) It is able to maintain the output specified on the nameplate or the output approved by higher authorities, and can be brought online at any time, with an annual equivalent availability rate of over 90% ； 　　(2) The efficiency reaches the design level or the average advanced level of domestic boilers of the same type ； 　　(3) The main parameters such as steam temperature, steam pressure, steam quality, and furnace negative pressure meet the requirements specified in the regulations ； 　　(4) The flue gas temperature and oxygen content at the boiler’s rated output meet the requirements of relevant regulations. 　　2. The internal components are undamaged and meet the required quality standards. (1) The steam drums, headers, and heat-exchanging surfaces show minor corrosion and wear, with normal tube creep ； 　　(2) Protection signal devices such as safety doors, explosion-proof doors, water level alarms, and fire protection systems are in good condition and operational, with reliable operation. The safety door is airtight and meets the requirements of the “safety regulations”. 　　(3) The main automatic control devices for steam temperature, steam pressure, feedwater, combustion, etc. are safe and reliable, and are in normal operation ； 　　(4) The furnace wall has no major defects, good thermal insulation, and the heat loss is basically in line with national standards. 　　3. The main unit is tidy, with all accessories available and functional. (1) All components and accessories are present; major instruments such as those for measuring steam pressure, steam temperature, carbon dioxide levels, water level, flow rate, furnace negative pressure, flue gas temperature, and water level are in good condition and accurate ； 　　(2) The main steam pipes, feed water pipes, supports and hangers, as well as the insulation within the boiler area are in good condition and undamaged. The metal material and creep behavior of the high-temperature and high-pressure main steam pipeline comply with the regulatory requirements ； 　　(3) The feedwater pipes within the boiler area that are used for the main steam pipes should be inspected regularly; the repair rate must be 100%, and the welds must be free of any significant defects ； 　　(4) The pipelines for steam, water, smoke, air, and the combustion system connected to the boiler itself are installed properly. Leakage ≤0.5％0. All bolts shall be fully tightened, aligned properly, securely fastened, and meet the local seismic design requirements ； 　　(5) The equipment appears in its natural color, free of dust and dirt; the paint is intact and attractive, the lighting is sufficient, and the color rings, flow arrows, and numbering are all present. 　　3. The technical documents must be complete and accurate, and should include (1) equipment records that comply with the requirements of the head office’s equipment management system ； 　　(2) Safety technology logbook or usage registration certificate ； 　　(3) Condition monitoring records ； 　　(4) Boiler cross-sectional view, diagrams of vulnerable components. XI. Standards for a proper motor 　　1. Normal operation with good efficiency 　　(1) The output can consistently meet the requirements specified on the nameplate or those approved by higher authorities, with the current remaining within acceptable limits ； 　　(2) The temperature rise is within the allowable range for different grades of insulating materials ； 　　(3) The vibration of each component shall meet the requirements specified in the relevant departmental regulations ； 　　(4) There should be no sparks during the operation of the slip rings and commutators. 　　2. The structure is complete and the quality meets the requirements. (1) Preventive tests must pass ； 　　(2) The coil, core, and slot wedges are not loose ； 　　(3) The protective devices shall meet the design requirements, have accurate setting values, and operate reliably ； 　　(4) Explosion-proof motors used in explosion-proof areas shall meet the requirements of explosion-proof regulations. 　　3. The unit is clean, and all accessories are present and functional. (1) The area around the motor is tidy; the nameplate on the casing is clear, and there is an on-site identification number ； 　　(2) The cable does not leak oil, and its installation complies with standards ； 　　(3) The air cooler operates efficiently and can meet the temperature requirements of the motor ； 　　(4) The motor’s interlock devices, grounding devices, and other accessories are complete and in good working condition. Important, large electric motors should be equipped with emergency stop buttons on site. 　　4. The technical documents must be complete and accurate, and should include (1) equipment records that meet the requirements of the head office’s documentation management system ； 　　(2) Maintenance and test records ； 　　(3) Operation records of high-voltage motors. XII. Standards for the Good Condition of Measurement and Control Instruments 1. The performance of these instruments should be such that they provide sensitive responses, accurate measurements, and stable control (sensitivity, accuracy, stability). (1) The basic errors, hysteresis, and overall appearance of the instruments must meet the technical requirements specified for that type of instrument ； 　　(2) The output signals of the regulator and primary instruments vary uniformly, without significant oscillations; the indication error between the primary instruments and secondary instruments meets the required accuracy standards ； 　　(3) For regulators with integral action, their static error shall meet the corresponding technical requirements ； 　　(4) The range selection of the measuring instruments shall comply with the technical specifications. The indicated flow value is above 30% of the full range (flow scale) ； 　　(5) The interlock protection system can provide automatic protection in the event of an accident. 　　2. The quality of instrument repair, assembly, and calibration is excellent and meets the technical requirements. (1) All components operate properly, are well-lubricated, and satisfy the relevant technical specifications ； 　　(2) Explosion-proof instruments meet the relevant technical requirements ； 　　(3) Pressured instruments that have been taken out for inspection and repair must undergo a pressure resistance and static pressure error test ； 　　(4) The sealed parts of the instrument must undergo a gas-tightness test in accordance with regulations ； 　　(5) The paper feed error meets the corresponding technical requirements. 　　3. The installation and maintenance of the complete set of instruments (including sensing elements, wires, instrument cabinets, and accessories) meet the required standards. (1) The installation complies with technical specifications; the wires are arranged neatly, the pipelines are horizontal and vertical, the bends are smooth, they are firmly fixed, there are no leaks in the pipelines, and the signal wires are properly shielded and grounded ； 　　(2) The table body is neat, the nameplate is clear, with no obvious defects; all components are complete, without severe damage or rust ； 　　(3) The records are printed clearly with distinct colors; the recording pen does not clog or leak, and ink flows smoothly. The recording paper meets the requirements ； 　　(4) The scale markings of the instrument, as well as the letters, numbers, and symbols on the scale plate, should be distinct and clear, and must not be dirty or damaged. The scale should meet the requirements. Legal measurement units shall be used uniformly. I. The scales of the primary and secondary instruments are consistent ； 　　(5) The output ammeter and pressure gauge attached to the transmitter should be in good condition, with accuracy meeting the required standards. 　　4. The technical documents are complete and well-documented. The documents should include (1) the complete set of automatic control design drawings for the equipment ； 　　(2) Instrument automatic control flow chart ； 　　(3) Schematic diagrams and wiring diagrams of the self-protection interlock systems for production equipment, large-scale units, etc ； 　　(4) Instrument installation wiring diagram and complex control circuit diagram ； 　　(5) Throttling device calculation table ； 　　(6) Instrument signal alarm and interlock protection setpoint data table ； 　　(7) Instrumentation equipment records ； 　　(8) Installation and operation manual, verification records, installation wiring diagram.