Comprehensive Compilation of Equipment Management Systems (Part 2)

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I. Equipment Basic Technology Management System II. Equipment Maintenance Management System III. Equipment Routine Inspection Management System IV. Equipment Maintenance Management System V. Pressure Vessel Management System VI. Lubricant Management System VII. Special Equipment Management System VIII. Equipment Routine Inspection System IX. Special Equipment Safety Management System X. Equipment Sealing Management System XI. Equipment Anti-corrosion and Insulation Management System XII. Equipment Installation, Commissioning and Acceptance System XIII. Equipment Accident Management System XIV. Equipment Lubrication Management System XV. Equipment Spare Parts Management System XVI. Equipment Documentation Management System XVII. Detailed Rules for Equipment Inspection, Evaluation and Reward/Punishment Regulations XVIII. Spare Equipment Turning System XIX. Electrical and Instrumentation Duty Personnel Management System XX. Electrical and Instrumentation Personnel Management and Responsibility Area Division System XXI. Explosion-proof Electrical and Instrumentation Equipment Management System XXII. Instruments, Meters and Automation Equipment Management System XXIII. Flammable and Toxic Gas Detection and Alarm Devices Management System XXIV. Online Analysis Instrument Management System XXV. Instrument Power and Gas Supply Management System XXVI. Electrical Testing System XXVII. Substation Routine Inspection System XXVIII. Calibration Standards for Measuring Instruments XXIX. Shift Handover Management System XXX. Electrical and Instrumentation Wiring Standards XXXI. Explosion-proof Zone Standards XXXII. Fire Protection and Hazardous Gas Alarm Control System Management Methods XXXIII. Closed-circuit Monitoring System and Intercom System Management Methods XXXIV. Automatic Control System Management XXXV. Interlock Protection System Management XXXVI. Interlock Work Order Management Regulations XXXVII. Safety Knowledge for Working at Heights XXXVIII. Equipment Integrity Standards XIV. Equipment Lubrication Management System I. General Provisions The lubrication management of equipment is an important part of equipment operation; proper and reasonable lubrication is an effective measure to ensure the normal operation of equipment, reduce machine wear, extend its service life, and improve production efficiency. II. Organization of lubrication management: Under the guidance of the person in charge of equipment management, a three-level management system is established, consisting of the equipment management department, work sections, and teams. III. Tasks and Responsibilities of Lubrication Management 1. Tasks and Responsibilities of Lubrication Management in the Equipment Management Department ⑴. Formulate various regulations for equipment lubrication, provide guidance on lubrication techniques and related practices, and conduct on-site inspections and supervision. ⑵Prepare lubrication cards, charts, and related technical documents for various types of equipment. ⑶Implement the five fixed principles for lubrication: fixed location, fixed quality, fixed quantity, fixed frequency, and fixed person in charge. ⑷Establish fuel consumption quotas, submit plans for the annual, quarterly, and monthly lubricant requirements to the relevant departments on time, and keep track of the actual amount consumed as scheduled. ⑸Prepare annual, quarterly, and monthly cleaning, oil change, and maintenance plans for the equipment’s fuel tanks and lubrication stations. ⑹. Organize the recycling and regeneration of used oil. ⑺. Check the use of lubricating oil and review the laboratory test results on its quality. ⑻. Check the proper use of lubrication equipment, summarize and promote advanced practices in equipment lubrication, and propose suggestions regarding rewards and penalties for lubrication work. 2. Contents and responsibilities of equipment lubrication management in the work section: (1) The head of the work section is responsible for the lubrication management of the equipment in that section, and is accountable to the equipment management department. ⑵Establish and improve a \"five-fixed\" lubrication system. ⑶Manage the issuance and allocation of lubricants (greases) for this section, as well as the status of refilling and the handling of used oil recycling. ⑷. In conjunction with the inspection system, check the lubrication of equipment and keep records. ⑸Responsible for reviewing and preparing the annual, quarterly, and monthly plans for equipment oil usage and oil changes in this section; tracking the consumption of lubricants on a monthly basis, and submitting reports to the relevant departments. ⑹Responsible for providing lubrication technology training to the personnel in this work section. ⑺Collaborate with the equipment management department to address lubrication technology issues and promote the adoption of new lubrication technologies. 3. Responsibilities of floor workers for equipment lubrication: ⑴. Carry out equipment lubrication work carefully in accordance with the “five fixed” principles and relevant regulations. ⑵Conduct regular inspections and patrols; if any abnormalities or leaks are detected in the lubrication equipment, they should be addressed promptly or reported to the relevant personnel. ⑶Keep the lubrication equipment, tools, lubrication nozzles, and lubricants clean, and avoid mixing up different types of lubricants. ⑷. In accordance with the specifications in the lubrication card, replace the grease on schedule, clean the oil tank, and keep records; after each card is used, it should be returned to the workshop for storage. ⑸Based on the actual consumption records in the lubrication cards, statistics are compiled monthly, submitted to the work section for review, and then sent to the equipment management department for record-keeping. IV. The “five fixed aspects” of equipment lubrication 1. Designate responsible persons: In accordance with the principle of combining specialized personnel with general workers, it is determined which lubrication points and areas should be serviced by the operators, while which areas should be handled by the lubrication specialists for oil filling and replacement. 2. Fixed points: Oil filling and oil change are carried out based on the lubrication areas of the equipment, as well as the location and quantity of the lubrication points. 3. Qualification: Determine the lubricant type based on the equipment manual and specific conditions. 4. Quantification: On the basis of ensuring proper lubrication, and in line with the principle of conserving oil, quotas for oil tank refilling and the amount of oil to be used at each lubrication point per shift are established. 5. Regularly: Follow the timing specified in the lubrication chart or schedule to perform oil filling, top-up, and oil change operations as well as cleaning and oil replacement. V. Preparation of lubrication cards 1. Lubrication cards are the basic documents for organizing equipment lubrication, and they are prepared by the equipment management department. 2. The lubrication card is a record of equipment lubrication; it includes the parts of the equipment that require oil changes, the name and grade of the lubricating grease, the consumption rates, and the oil change intervals. VI. Management of Lubricants 1. Each workshop should have a dedicated or part-time employee responsible for the centralized management of lubricants, ensuring proper distribution and allocation. 2. Lubricants should be classified and labeled by grade, with clear signs placed in appropriate locations; strict control is required to prevent confusion regarding different lubricant grades and types. VII. Recovery and recycling of used oil 1. To save lubricants, all units that use oil should actively carry out the recovery of used oil. 2. When cleaning and changing oil in each workshop, the old oil and waste oil should be sent to the supply department for recycling. 3. Different types of used oil should be collected and stored separately; they must not be mixed together. 4. Advanced waste lubricating oils and specialty oils should be recovered separately. 5. The oil drums used for storing used oil should be covered to prevent dust, sand, and water from mixing into the oil. 6. For the recycling of used oil, the warehouse should keep proper original records. 7. Once the regenerated oil passes the testing, it should be managed in accordance with the management system for new oil. VIII. Inspection and Evaluation: The department in charge of equipment is responsible for conducting regular inspections of the equipment’s usage status, while the manufacturing factory is responsible for evaluation. The Enterprise Management Planning and Infrastructure Department oversees this process, with inspections being carried out on a quarterly basis. 15 Management of Spare Parts for Equipment I. Planning for Spare Parts 1. The plans for spare parts requirements should be formulated in a categorized manner; generally, they are divided into: (1) Spare parts needed for maintenance, that is, consumable and frequently replaced parts. ⑵Spares required for major and medium repairs, that is, replacement parts. ⑶Spares required due to accidents, namely the main structural components. ⑷. Imported spare parts, namely spare parts specific to imported equipment. 2. The annual demand for spare parts should be determined based on the production plan and the results of quota calculations, after conducting a thorough review (checking factory inventory, workshop inventory, orders placed outside the factory, and machine repair plans). This review is the responsibility of the equipment manager. 3. The planning time for annual spare parts requirements should be assigned by the equipment management department by the end of November. Each production unit is required to submit its plans to the equipment management department by December 10, and these plans will be compiled and reviewed by December 20 before being submitted to the senior production manager for approval. 4. Spare parts for major, medium-scale repairs, and accident-related repairs must have separate plans prepared for them; they cannot be mixed up. 5. Monthly, only critical spare parts that are urgently needed are ordered, to be supplied in fixed quantities and at set times. 6. For the spare parts plan, the name, specifications, model, material, quantity, manufacturer’s name, equipment name, etc., must be filled in completely and accurately to meet the ordering requirements. II. Handling of spare parts for accidents: The spare parts required in case of equipment failures must be dealt with as special cases; every effort should be made to resolve the issue promptly so as to resume production as soon as possible. III. Management of External Orders 1. Order placement is carried out strictly in accordance with the annual requirements and monthly plans for urgent needs, ensuring no repeated orders, no missed orders, and no incorrect orders. 2. Strictly adhere to the specifications and performance requirements for spare parts; select manufacturers carefully, and make purchases by comparing prices, quality, and service. 3. The fields specified in the order contract, such as the name, model specifications, material, quantity, unit price, delivery deadline, quality standards, delivery location, and settlement method for spare parts, must be filled in clearly and accurately. 4. The processing of non-standard parts is commissioned to a manufacturing unit by the maintenance team. 5. If quality issues are detected upon inspection of the spare parts upon their arrival at the factory, the purchaser must take responsibility for contacting the relevant parties promptly to address the issue, so as not to disrupt production activities or cause financial losses. IV. Repair and regeneration of spare parts and components: Spare parts removed during equipment maintenance that do not meet the required dimensions but still retain their original mechanical properties should be repaired using methods such as surfacing welding or spray coating in order to regenerate them. This is an effective way to save on spare parts and reduce costs. Maintenance personnel who contribute to restoration and reuse should be handled in accordance with the \"Reward Regulations\". V. Disposal of spare parts 1. Spare parts that are severely corroded or have been used beyond their limits and cannot be repaired. 2. Spare parts with outdated technology. VI. This system is inspected by the manufacturing plant, with supervision and implementation carried out by the Enterprise Management Planning and Infrastructure Department. 16. Equipment Archive Management System I. General Provisions on Equipment Archive Management Equipment archive materials serve as an important basis for the manufacturing, use, management, and maintenance of equipment. To ensure the quality of equipment maintenance, keep the equipment in good technical condition, improve the levels of use and maintenance, and fully leverage the role of these archive materials in supporting daily equipment management, maintenance, and operation, this system is established. II. Instructions on Equipment Documentation 1. Equipment-related documentation refers to technical documents such as drawings, charts, written descriptions, calculation data, photos, videos, and audio tapes that are generated throughout the entire life cycle of a device – from its selection (design), purchase, installation, use, maintenance and modification, renewal, to eventual disposal. These documents need to be organized and archived. The equipment management department is responsible for organizing the documentation related to the company’s production equipment and handing it over to the company’s archives for storage. 2. Contents of the equipment documentation: ⑴ Manufacturer’s technical inspection documents, certificates of conformity, technical manuals, and packing lists. ⑵Equipment installation, record-keeping, commissioning record, acceptance and handover document. ⑶. List of equipment accessories and tools. ⑷Records of major and minor equipment repairs, completion acceptance forms, and repair inspection records. ⑸. Precision verification and inspection records. ⑹Equipment modification and upgrading technologies. ⑺Equipment defect records and accident reports (cause analysis and handling results). ⑻Equipment Technical Condition Assessment Form. ⑼Installation foundation drawings and civil engineering drawings. ⑽. Equipment structure, drawings of vulnerable parts, and main accessories. ⑾Equipment operation procedures (including: job responsibilities, main technical requirements, operating procedures, maintenance tasks, etc.). ⑿. Other materials. III. Management of equipment records: The company’s archives department is responsible for the centralized management of these records to ensure their proper preservation. IV. Collection and organization of equipment records 1. When new equipment arrives at the company, the personnel from the supplier company and the managers of the relevant departments are responsible for collecting and organizing the information specified in points 2.2(1), (2), and (3), and then handing it over to the company’s archives manager, with both parties signing the handover form. 2. During equipment inspection and maintenance, the equipment management department organizes engineering technicians and relevant personnel to conduct surveys and measurements of the equipment’s vulnerable components and transmission parts; after verification, these measurement drawings are compiled into volumes for archiving. 3. The equipment management department is responsible for collecting and reviewing the various documents mentioned in items ㈡.2.⑷-⑿, and it is also responsible for handing over the completed and approved documents to the company’s archives manager. The archives manager then files these documents and signs the handover form together with the relevant personnel. 4. The original images or technical documentation without backups shall not be lent or taken out of the document room; they can only be viewed within the document room. V. Specific requirements for the management of equipment documentation 1. Technical documents should be as complete, thorough, and accurate as possible. 2. Documents such as inspection (testing), maintenance, and acceptance records are sorted and organized by the personnel in charge of equipment management before being handed over to the document room for centralized storage. 3. All drawings must have a unified numbering system. 4. The technical requirements on the drawings must be clearly indicated, and the drawings themselves must be clear. 5. For devices of the same model, the part dimensions may vary due to differences in manufacturer and year of production; these should be verified against the actual items and indicated in the drawing index. 6. After the equipment is modified or altered, the drawings should be updated promptly. 7. Modifications to the drawings shall be indicated on the base drawing and noted in the modification index. 8. All drawings from the original manufacturer shall use the manufacturer’s original numbering system. 9. The management of various documents for custom-manufactured and self-produced non-standard equipment is the same as that for purchased standard equipment. 10. It is strictly prohibited to use the drawings, equipment diagrams, and related materials in the catalog for processing or outsourcing purposes. VI. Procedures for Approving the Borrowing of Drawing Materials 1. The materials manager shall carefully fill in details such as name, drawing number, number of sheets, borrowing date, and expiration date in accordance with the \"Drawing Materials Borrowing Registration Form\", while the borrower signs in the signature section. 2. The borrowing of top-secret documents requires approval signed by the chief engineer; other materials can be borrowed only after approval signed by the equipment management supervisor. 3. Those who fail to return books on time must go through the extension procedure; for lost or damaged books, compensation must be paid. 4. Personnel from external organizations that do not work for our company are not allowed to borrow the company’s equipment records and documents. Employees who work for our company may consult relevant records and documents in the document room with the approval of the equipment supervisor, but they are not permitted to take those documents out. If external personnel need to take documents away, they must obtain written approval from the company manager. 5. The original images or technical documentation without spare parts must not be lent out; they can only be viewed in the document room. 6. Before employees of this unit leave or retire, if there are any borrowed materials that have not been returned, they must go through the return procedure; otherwise, the Party and Government Department will not process their departure or retirement procedures. VII. The Party and Government Affairs Department is responsible for the inspection and evaluation of this system, while the Enterprise Management Planning and Infrastructure Department is responsible for supervision. 17. Detailed Rules for the Inspection, Evaluation, and Assessment of Equipment, as well as Reward and Punishment Provisions I. General Provisions In order to strengthen the assessment of equipment management, to better supervise the progress of equipment management tasks, and to evaluate the level of equipment management, these detailed rules are formulated in accordance with the principles of comprehensiveness, thoroughness, seriousness, and diligence. II. Assessment Methods 1. The Equipment Management Department of the Production Technology Division conducts inspections, assessments, and evaluations of the equipment management work in each workshop by the 25th of each month. Based on these assessments, corresponding rewards and penalties are determined, which are then implemented in the following month. The assessment results are incorporated into the work section’s economic responsibility system. 2. The inspection results are classified into four grades: (1) Units with 95 points or above are considered excellent ； ⑵.85–95 scores indicate excellent units ； ⑶.60–85 points indicate a qualified unit ； ⑷Units with a score of 60 points or below are considered unqualified ； 3. Based on the inspection of equipment availability, red-flagged equipment is identified (see the Red-Flagged Equipment Evaluation System for standards). 4. The units recognized as outstanding each month will be commended in a formal notice; they will receive a base bonus of 1,000 yuan, with an additional 200 yuan awarded for every extra point beyond 95 points ； For the units recognized as excellent each month, a basic bonus of 500 yuan is provided ； An additional 50 yuan is awarded for each extra point on top of 85 points ； Units with a score of 60 or below are fined 1,000 yuan, with an additional fine of 200 yuan for each point decrease. Operators of the machines rated as red-flag equipment, as well as maintenance personnel responsible for their upkeep, will each receive a reward of 200 yuan and have a plaque awarded to them. The amounts of fines and rewards are kept in a separate account by the Finance Department for specific purposes only. The amount of the reward for units recognized as outstanding in equipment management for the year is determined by the company. III. Evaluation Criteria: The production department is not responsible for the maintenance of electrical equipment, automation devices, instruments, and circuit networks; such tasks should be handled by the electrical maintenance team, who will also be evaluated for their performance. Attached are the inspection and evaluation criteria for the mechanical and electrical equipment in the production process line: Inspection and Evaluation Criteria for Mechanical and Electrical Equipment in Production Process Line – Images. IV. Organizational Structure: The evaluation team is composed of the equipment management department from the Production Technology Department and the section leaders of various work sections, with the head of the Production Technology Department serving as the chairperson. V. Scope of assessment: Equipment management in departments such as the sorting workshop, pyrolysis workshop, brick-making workshop, control room, and laboratory. VI. This system is inspected by the Equipment Management Department, evaluated by the Production Technology Department, and supervised by the Enterprise Management Planning and Infrastructure Department. Appendix 1: Equipment integrity indicators. The technical condition of an enterprise’s mechanical and electrical equipment is classified into four categories: intact, operating with defects, stopped due to defects (including temporary damage), and ready for disposal. I. Intact equipment: 1. The equipment’s components are complete and in good condition; although there may be minor damages or defects such as deformation or cracks, these do not lead to further deterioration, and the equipment can operate safely under regular maintenance, scheduled inspections, and normal load conditions. 2. The equipment performs well in terms of performance; it is not loose, there are no abnormal noises, no oil leaks, no air leaks, and no water leaks. The main systems such as transmission, lubrication, and cooling operate properly, and the control system is sensitive and reliable. II. Equipment operating with defects: Equipment whose components have significant flaws, which are unable to maintain a proper operating cycle; such equipment operates at reduced load or barely functions under conditions of high vibration and temperature. III. Equipment shut down due to defects: Equipment whose components are severely damaged or incomplete, preventing it from operating temporarily, but which can still function once repaired. IV. Equipment to be scrapped: Equipment whose main components are severely damaged and cannot be operated, and for which repair is technically impossible or not worthwhile, should be scrapped. Equipment may not be treated as scrap without the approval of the higher-level authorities; equipment that has been approved for scrapping is no longer included in the statistics. Appendix II: Red Flag Equipment Standards – Equipment standards and technical performance requirements: 1. The equipment must have comprehensive various management systems in place. 2. No major equipment accidents occurred at the production facilities throughout the year. 3. The operating system, automation systems, and instruments are sensitive and reliable, with normal operation. 4. The original records of production equipment operation are accurate, complete, standardized, and truthful. 5. Equipment operators must possess the “three understandings” and “four skills” (Three understandings: understanding performance, understanding structure, understanding principles ； Four skills: knowing how to operate, maintain, service, and repair). 6. The equipment and machines should be kept clean, ensuring the achievement of the \"four no’s\" and \"five no-leakages\" (Four no’s: no dust accumulation, no debris, no loose parts, no oil stains) ； Five no-leaks: no oil leaks, no air leaks, no gas leaks, no electricity leaks, no water leaks). No oil leakage: There should be no traces of oil at the fixed joints where the equipment is stationary; traces of oil are allowed at the moving parts, but no oil should be visible within 3 minutes after wiping them clean, and no oil droplets should appear within half an hour. In areas where rotation does not occur and there is no sealing, lubricant must not spill onto other parts or the foundation. Airtight: When tested by hand with air-handling equipment, pipes, valves, etc., no sensation is felt at a distance of 100 mm. No air leakage: The equipment, pipelines, valves, and surrounding areas are considered satisfactory if no vapor is observed. No leakage: The insulation resistance meets the requirements, and the safety protection devices comply with electrical regulations. No leakage: The joints where the equipment is fixed must not leak, and there should be no dripping from any pipes or moving parts. 18. Rotation System for Standby Equipment: In accordance with the equipment management regulations of the methanol plant, the following provisions have been established regarding the rotation of standby equipment: 1. For standby equipment in the workshops where such equipment is used, rotation schedules are determined based on the actual condition of each piece of equipment, as follows: A. Large-scale equipment requires to be rotated once every three days ； B. The gas station is started and operated once every seven days ； C. The pump equipment should be turned over every two days. II. For standby pumps equipped with interlocked auto-start functionality, cranking operations must be carried out while ensuring production and personal safety. III. The regulations for turning the equipment are as follows: A. For large-scale equipment, it should be turned 90° each time. B. The pump equipment should be turned two full rotations or more each time. C. The operating time for each cycle at the fuel station is 30 minutes. D. Clear turning marks should be marked on the exposed parts that rotate with the equipment (such as shaft ends, couplings, etc.), and these marks should correspond to the turning cycle. IV. Maintain records of equipment rotation; the rotation record form must be filled out accurately after each rotation. 19. Management System for Electrical and Instrumentation Shift Workers: 1. To ensure the proper operation and precise monitoring of the factory’s electrical and instrumentation equipment, thereby facilitating smooth production processes, electrical and instrumentation staff are required to work night shifts. The specific management procedures are as follows: 2. Shift workers are required to be on duty from 5:00 p.m. to 8:00 a.m. the following day, and their mobile phones must remain turned on during this period. 3. During their shift, duty personnel are not allowed to leave the factory premises without permission. If it is necessary to leave for some reason, they must inform the supervisor on duty that day, providing their contact information and the estimated time of return. After completing their errand, they must return to the factory and report back to the supervisor on duty. 4. When dealing with on-site issues, duty personnel are strictly prohibited from working alone; two people must be involved, one carrying out the operations while the other acts as a supervisor. When addressing problems in areas where it is not possible to confirm the absence of potential hazards, it is necessary for the personnel on duty to ensure safety and provide supervision. 5. On duty, personnel must fill out the duty records carefully as required, making sure to record any unresolved issues clearly and in detail. 6. The duty staff must clean the office and the duty room before the day shift employees arrive, so as to create a comfortable working environment for them. 7. The duty personnel must carry out their duties on the dates specified in the duty schedule. If they need to change shifts, they must inform the shift supervisor 4 hours in advance; unauthorized shift changes are prohibited. 20. Management System for Electrical and Instrumentation Personnel and Division of Responsibility Areas: 1. Strictly abide by all the rules and regulations set forth by the factory, and complete all tasks assigned by superiors. 2. Roll call is conducted 10 minutes early every day; those who arrive before 8 o’clock are considered late, while those who arrive before 8:30 are considered absent from work. If there is a reason for being absent, permission must be requested in advance; failure to do so and still not showing up will result in being treated as absent from work. 3. To ensure the safe and proper operation of electrical and instrumentation equipment, and to enable our plant’s electrical and instrumentation staff to be fully familiar with the electrical and instrumentation devices on site as well as our plant’s production processes and safety measures, thereby ensuring the health of the staff and the smooth progress of production, responsibility areas have been designated accordingly. (1) Division: ***, ***, and *** are responsible for the maintenance of all equipment within the control room DCS system, the power distribution room on the first floor of the office building, the closed-circuit surveillance system, the fire and hazardous gas alarm systems, the office automation system, and the communication systems. ***** is responsible for powering and controlling all electrical and instrumentation equipment as well as automation devices in the power distribution room and the synthesis workshop, including the PLC systems, monitoring sensors, fire and hazardous gas detectors, communication equipment, as well as other electrical equipment used in various public facilities within the synthesis area. *****, ***, and *** are responsible for all electrical and instrumentation equipment as well as automation devices in the air separation power distribution room and the air separation workshop; this includes DCS and PLC systems, monitoring sensors, fire and hazardous gas detectors, communication equipment, as well as the electrical supply equipment for other public devices within the area covered by their responsibilities. ******, *** are responsible for all electrical and instrumentation equipment at Substation 203 and the purification workshop, including monitoring sensors, communication equipment within their jurisdiction, as well as the electrical and instrumentation equipment for other public facilities in the purification area. (2) Responsibilities: A.*** and **** are the main persons in charge of their respective responsibility areas. B. Personnel in each responsibility area must ensure the safe and reliable operation of all electrical and instrumentation equipment within their jurisdiction. C. Personnel in each responsibility area must be familiar with the process flows within their assigned area, the types of hazard sources present, the nature of those hazard sources, as well as the safety protective equipment required. They should also understand the working principles of the electrical and instrumentation equipment in their area, in order to improve their ability to protect themselves and handle issues on site. D. Personnel in each responsible area must complete the internal documentation related to their respective areas, and this documentation must be consistent with the actual conditions on site. This includes (power distribution system diagrams, electrical control schematics, instrument data sheets, wiring or schematic diagrams of control systems, records related to power distribution panels, records of equipment subject to regular inspections, records of interlock devices, shift handover records, safety training records, work orders for turning power on and off, records of visitors, etc.). E. Maintenance of cleanliness in each responsible area, including (power distribution rooms, the areas under responsibility, gas analysis booths, duty rooms, insulation protection boxes, power transformation and distribution cabinets, DCS control system cabinets, PLC control system cabinets, operation panels, junction boxes, distribution boxes, cable trays, etc.). F. Ensuring that there is zero rate of failure among the electrical and instrumentation equipment within the designated explosion-proof areas. G. Being responsible for the monthly planning, technical upgrades, and other related tasks related to the equipment in the assigned area. Note: *** is responsible for the management of electrical and instrumentation personnel, the management of high and low voltage electrical equipment throughout the plant, the review of electrical plans, electrical coordination, electrical technical upgrades, and the resolution of complex electrical issues. Mr. Liang is responsible for the management of the plant’s DCS, PLC systems, networks, communications, and instrumentation equipment; he oversees the review of instrumentation plans, coordinates related activities, handles technical upgrades to instrumentation, and resolves any issues related to instrumentation. 4. The workshop will conduct monthly assessments of electrical and instrumentation personnel in accordance with the \"Management System for Electrical and Instrumentation Personnel and Division of Responsibility Areas\" and the \"Detailed Assessment Rules for Electrical and Instrumentation Personnel\". The results of these assessments will serve as a basis for identifying outstanding performers at the end of the year and for selecting personnel for management positions. 21. Distribution Room Management System I. Scope This system is used to regulate the management of distribution rooms and ensure the proper operation of power distribution equipment; it applies to distribution rooms. 1. Strictly abide by all relevant electrical management systems and standards established by **, the company, and the factory, and strictly implement the work order system for power shutdown and restoration. 2. To start or stop equipment with a capacity of 1,000 kilowatts or more (including 1,000 kilowatts), it is necessary to make a telephone call to the person in charge of the 35,000-volt system at Plant 2 and obtain permission before proceeding; meanwhile, records of the start-up and shutdown operations must be kept. 3. It is not allowed to modify the parameters of instruments and equipment such as comprehensive protection systems, soft starters, protectors, and frequency converters arbitrarily. The setting values for the comprehensive protection systems of high-voltage cabinets and transformers can only be set, modified, recorded, and signed off by personnel assigned by the 35 kV substation of Plant 2 (or personnel at or above the section chief level, under the authorization of such assigned personnel). Such actions must also be approved by the Equipment Department before being filed in the archives ； The setting of other parameters is approved by personnel at the section chief level or above, while those at the senior technician level or above make the modifications and keep records. 4. Non-electrical staff are prohibited from entering the power distribution room without permission. Regular employees and those working temporarily must receive safety training from the Safety Supervision Department before they can enter, under the guidance of the person in charge of the production department or the electrical staff. For electrical staff sent by external organizations to provide support or assistance, the person in charge of the work site should explain to them how the electrical equipment operates there as well as the relevant safety measures prior to they start working. 5. For distribution cabinets equipped with metering devices, such devices must meet the required standards, and their testing and calibration shall be carried out by qualified electrical authorities. 6. The substation and distribution room should be equipped with the following tools, equipment, and spare parts: (1) Various safety devices, temporary grounding wires, various signs, and other common tools. (2) Safety protective equipment such as insulating boots. (3) Flashlight. (4) Effective fire-fighting equipment. (5) Common spare parts such as fuse tubes, fuses, porcelain insulators and bushings, common switches, disconnectors, and load switches. (6) Various light bulbs and other accessories for lighting and signal indication. 7. Staff should inspect the equipment daily, address any abnormalities promptly, keep records of them, and report serious abnormalities immediately. 8. The inspection can be carried out by one person, but no other tasks unrelated to the inspection are permitted. 9. The signal lights, illuminated signs, electric bells, and electric clocks in the distribution cabinets of the substation should display accurately and operate reliably. 10. The enclosures of switchrooms, power distribution equipment, and other electrical devices requiring grounding must be reliably grounded. The grounding resistance should be ≤5Ω. 11. Work on electrical equipment that is not under the control of this distribution room, as well as the installation of temporary ground wires, are prohibited. 12. Prepare properly before starting work: cut off power, discharge electricity, install ground wires, and set up or hang warning signs. After the work is completed, clean up the site; the temporary ground wire can be removed only after verification by the inspectors confirms that everything is in order, and trial operation can begin only after all personnel have left (the trial operation period is 72 hours). 13. The power distribution equipment should be shut down for cleaning and inspection at least once per quarter, with proper records kept. 14. When entering or leaving the switchroom, staff should close the door behind them to prevent small animals from entering and causing accidents. 15. It is necessary to ensure that the doors and windows in the power distribution room are intact and operate smoothly; normal and emergency lighting systems must be fully functional. The building should not leak rainwater, and there should be no water accumulation in the cable trenches. 16. In the distribution room, flammable and explosive materials sowie other items that are not related to work should not be stored there; good hygiene conditions must be maintained. 17. Other equipment such as telephones installed in the power distribution room shall not be used for other purposes. 18. The staff in the power distribution room should fulfill their duties conscientiously, strengthen unity, and work together to maintain all the equipment and facilities in the room. 19. The power distribution room has the authority to take action against entities and individuals who violate electricity usage rules, and to report such cases to higher authorities for record-keeping. 22. Management System for Explosion-Proof Electrical and Instrumentation Equipment: The design of explosion-proof electrical equipment projects shall comply with the current **standards and specifications. I. The selection principles for explosion-proof electrical equipment are safety and reliability, as well as economic Reasonableness. Explosion-proof electrical equipment of the explosion-proof type shall have clear explosion-proof markings on its visible parts. II. Select appropriate electrical equipment based on the requirements for the explosion-proof design of such equipment, as determined by the classification level of the area with explosion hazards. III. The grade and group of the explosion-proof electrical equipment selected shall not be lower than those of the explosive substances in that area. When there are two or more explosive substances, the classification and group corresponding to the higher level of danger should be selected. IV. Electrical equipment in areas at risk of explosion must simultaneously meet the requirements imposed on such equipment by various environmental conditions in the surrounding area, including chemical, mechanical, thermal, fungal, as well as wind and sand factors. V. The operation and maintenance of explosion-proof electrical equipment shall be carried out in accordance with the Provisions on Electrical Safety in Explosive Hazardous Areas of the People’s Republic of China (Trial), and regular inspections of compliance shall be conducted. VI. The maintenance of explosion-proof electrical equipment shall be carried out in accordance with the \"Maintenance of Electrical Equipment for Explosive Environments\" and relevant regulations; those responsible for maintaining such equipment must have received training in the knowledge related to explosion-proof electrical equipment. The management of explosion-proof instruments shall meet the following requirements: ① Instruments used in hazardous areas must comply with the requirements regarding explosion-proof type and grade. Explosion-proof instruments shall have clear explosion-proof markings in prominent locations. When installing instruments in hazardous areas, the wiring must meet the technical requirements regarding the explosion-proof type and grade. ②When servicing explosion-proof instruments, it is not allowed to change the structure or material of the components. ③When upgrading or modifying existing explosion-proof instruments in hazardous areas, it is necessary to verify their explosion-proof performance, and the explosion-proof rating must not be reduced arbitrarily. ④When adding new instrument measurement and control circuits as well as other circuits in hazardous areas, their explosion-proof rating must not be lower than that of the other instruments in that area. ⑤Personnel responsible for the operation and maintenance of explosion-proof instrumentation equipment must receive training, and only after passing such training may they take up their duties. 23. Management System for Instruments, Meters, and Automation Equipment: This system is established to strengthen the management of instruments and meters, control and optimize process conditions, reduce material consumption, improve product quality, and ensure safe and stable operation. 1. The Production Department shall, based on the results of inspections of measuring instruments as well as the requirements regarding control and interlock systems and alarms, establish appropriate mechanisms for the management and maintenance of such instruments and meters. It is necessary to define the responsibilities at each level and to strengthen the maintenance and management of these instruments and meters. II. The production department must strictly establish and implement procedures for the storage and use of instruments and meters, maintenance and repair protocols, as well as safety and technical regulations. III. The production department must establish basic technical documents such as simulated process flow diagrams with process control points, as-built drawings for instrument installation, calibration records, diagrams of the instrument power supply system, and diagrams of the instrument air pipeline system. IV. Daily management of instruments and meters (1) It is necessary to ensure that there are responsibility systems for each position, regulations for routine inspections, requirements for use and maintenance, as well as scheduled and planned maintenance and calibration tasks. This is done to guarantee the measurement accuracy of instruments and meters, and to continuously improve their reliability, efficiency, and the operational rate of signal interlocks. (2) Personnel using instruments and meters shall properly store and use the instruments in operation, and regularly maintain their integrity and cleanliness. (3) The scrapping and replacement of instruments and meters shall be requested by the Production Department, and an economic and technical evaluation shall be conducted by the department in charge at the factory. If it is considered to have advanced technology, good performance, and reasonable cost, the procedures for scrapping and replacement will be carried out upon approval by the relevant higher-level authorities. (5) Any changes to the instrument setting parameters for process control or the setting values for relay protection must be proposed by the plant’s production and technology department; such changes can be implemented only after approval by a leader at or above the level of deputy plant manager or chief engineer. V. Safe operation of instruments and meters (1) The supply systems for instrument air, power supply, and steam for pipeline insulation must be regularly maintained and inspected to eliminate defects and ensure they remain in good condition, thus guaranteeing a proper supply and safe operation. (2) Any disconnection or deactivation of instrument and meter protection devices, as well as interlock and alarm systems, must be submitted to the production department; such actions can only be carried out after approval by a leader at the level of deputy plant manager or chief engineer, or by some other authorized person. (3) The Production Department should organize regular or seasonal thorough inspections of instruments and meters to take precautions against accidents and ensure safe and reliable operation. VI. Basic Information (1) Management systems for instrumentation, inspection and maintenance procedures, etc. (2) Records of control systems such as DCS and PLC, system acceptance records, system inspection and fault handling records, system modification records ； System design documents, manuals, system software, application software, system backup disks, etc. (3) Records of the instrument interlock protection system, interlock schematic diagrams/logic diagrams, interlock work orders, etc. (4) Documents such as registers of combustible and toxic gas alarms, maps showing the distribution of detection points, instrument manuals, loop diagrams, and records of calibration and verification. (5) All design documents and drawings for instruments, selection information, manuals, accompanying materials, associated instruments and other equipment-related documents and drawings, as well as installation and commissioning records, acceptance records, maintenance and calibration records, etc. (6) Records of instrument equipment failures and defects, etc. VII. Inspection and Assessment (1) The company’s Equipment Management Department inspects the measuring instruments in various using units on a quarterly basis. The equipment management departments of each using unit shall organize regular or routine inspections for their respective units. (2) For instrumentation equipment, inspections and evaluations shall be carried out in accordance with the following technical specifications: (i) The integrity rate of instruments ≥ 95% ； Utilization rate ≥95% ； Control rate ≥90% ； Leakage rate ≤ 0.5‰ ； (II) The integrity rate and utilization rate of analytical instruments shall be ≥90%. (III) The utilization rate of the interlocking system is 100% ； (IV) The installation rate, integrity rate, and utilization rate of combustible and toxic gas detection alarms are 100% ； 24. Management System for Flammable and Toxic Gas Detection and Alarm Devices 1. For all new construction and expansion projects where there is a possibility of accidental leaks of flammable or toxic gases, it is necessary to equip such projects with flammable and toxic gas detection and alarm devices in accordance with the principle of \"simultaneous implementation.\" 2. The selection and installation of flammable and toxic gas detection and alarm devices must be carried out in strict compliance with the provisions of the \"Design Code for Detection and Alarm of Flammable and Toxic Gases in Petrochemical Enterprises\" (SH 3063-1999). The selection of alarm devices shall comply with the following requirements: 1. Determine the explosion-proof type of the detector based on the classification of explosive hazard areas in the location where it will be used ； Select the explosion-proof rating and group of the detector based on the category, level, and group of the flammable gases to be detected in the location of use. 2. When the usage environment contains media such as sulfur and halogen compounds that can poison the detection element, an antidotal detector should be selected. 3. Multi-point indicator alarms shall have relatively independent alarm functions that do not affect each other, and be capable of distinguishing and identifying the location code of the area where an alarm occurs. III. The installation of flammable and toxic gas alarms must comply with the requirements specified in relevant standards. 1. Determine the installation height and location of the detectors based on the density of flammable and toxic gases as well as the prevailing wind direction. 2. The detector should be installed in a location free from shocks, vibrations, and strong electromagnetic interference. 3. The installation of indicator alarms or alarm devices should take into account the principles of ease of operation and monitoring. The alarm should have a sign indicating the location of the corresponding detector, or a layout diagram of the detectors. IV. Daily maintenance, fault handling, and inspection management of flammable and hazardous gas detection alarms 1. When the detector is of the flameproof type, it must not be used under conditions that exceed the specified limits ； It is strictly prohibited to remove the detector while the instrument is powered on. 2. During daily routine inspections, the test button should be pressed to check whether the indication and alarm systems are functioning properly ； Regularly check whether the detector is displaying properly, to prevent failures in the detection components from affecting its performance and leading to false alarms. 3. Gas detectors should undergo at least three calibrations and one verification per year; that is, they need to be calibrated every 3 months and verified once a year. A \"Verification Record for Flammable and Toxic Gas Detection Detectors\" must be filled out. The calibration can be carried out by the respective organizations themselves, but those responsible for calibration and verification must hold relevant certificates. When calibrating gas detectors, standard gases provided by units that have been approved by the metrological authorities, possess the necessary standard materials, and hold a \"License for Manufacturing Metrological Instruments\" should be used. V. Combustible gas alarms should undergo a comprehensive inspection once a year, and the maintenance and inspection shall be carried out in accordance with the requirements of the \"Code for Maintenance and Inspection of Petrochemical Equipment\" (SHS 07005-2004). VI. The shutdown or removal of gas alarms must be approved by the safety authorities before it can be carried out. 25 Management of Online Analytical Instruments I. Online analytical instruments used for measuring corrosive media or those installed in flammable and explosive hazardous areas must comply with the provisions of relevant standards and specifications. II. Each user unit shall establish and improve various procedures for the operation, maintenance, calibration, and repair of online analytical instruments. III. Personnel responsible for the operation and maintenance of online analytical instruments must receive training and obtain the corresponding qualification certificates. IV. Strictly implement the regular inspection and calibration systems for online analytical instruments and sample preprocessing equipment, and carry out planned maintenance work properly. The maintenance, repair, and calibration of online analytical instruments and sample pretreatment devices shall be carried out in accordance with the requirements of the \"Code for Maintenance and Repair of Petrochemical Equipment\" (SHS 07005-2004) as well as those specified in the respective instruction manuals for the online analytical instruments. V. If abnormal readings or malfunctions are detected while online analysis instruments and sample preprocessing devices are in operation, maintenance personnel should address them promptly, and record the symptoms of the malfunction, its causes, the methods used for correction, and the results obtained. VI. All standard instruments shall undergo weekly inspections in accordance with relevant metrology regulations; the use of standard instruments that have passed their inspection deadline or failed the inspection is strictly prohibited. During calibration, standard gases provided by entities that have been approved by the metrological administration, issued with a corresponding \"License for Manufacturing Measuring Instruments\", and possess the appropriate reference materials should be used. VII. Major overhauls of online analytical instruments and sample preprocessing equipment are carried out alongside the shutdown overhauls of the equipment ； During the major overhaul, a comprehensive and thorough cleaning of the on-line analysis instrument system is required, as well as system calibration, diagnosis, maintenance, and inter-system alignment. Online analysis instruments involved in interlocks should also undergo interlock circuit verification. 26. Instrument Power and Gas Supply Management I. Instrument gas supply management: 1. The purified gas should not contain flammable, explosive, toxic, harmful, or corrosive gases (or vapors). The dew point of the gas supply at operating pressure should be at least 10°C lower than the local annual extreme minimum temperature in the working environment or historically. 2. The DCS control room shall be equipped with monitoring and alarm functions for the pressure of the air supply system. 3. Each workshop conducts regular routine inspections of the gas supply systems within its area of responsibility (air tanks, valves, pipelines, filters, pressure regulators, pressure gauges, etc.). 4. Each workshop shall regularly empty the filters in use within its area (the frequency of emptying can be increased appropriately depending on the quality of air supply from the instruments and their installation location). Regularly empty the drain valve at the lowest point of the device. II. Instrument power management: 1. In newly constructed, upgraded, or expanded large-scale projects or key installations, the power supply for the control systems should be provided by two or three UPS units. 2. Electrical and instrumentation personnel conduct regular inspections of various components in the power supply system, checking the operation of power supply units, power distributors, switches, fuses, and other components; any issues identified are analyzed and addressed promptly. 3. For power supply cabinets used in parallel, check their operation status online; the output current of each power supply cabinet must not exceed its rated value. 4. The markings on switches, power distributors, and power terminal blocks in the power supply system must be accurate and clear. Damaged or missing labels, as well as illegible handwriting, should be dealt with promptly. 5. The power supply system should have comprehensive measures to prevent small animals from entering arbitrarily. 6. The power supply switch for the instruments in the dashboard (cabinet) should have at least 10% of the circuit reserved as a backup. It is strictly prohibited to supply power to non-instrument loads from the instrument power supply ； It is strictly prohibited to connect temporary loads to the instrument power supply. 27 Electrical Testing System: Electrical testing is an important method for assessing the insulation condition of electrical equipment, testing and analyzing its technical performance, determining whether it can be put into use, preventing equipment damage, and ensuring the safe operation of electrical equipment. This system has been established to improve the quality of electrical testing in our factory. ⒈High-voltage equipment that has been out of service and not moved for an extended period (more than 8 months) must undergo tests in accordance with the test procedures and standards applicable to operating equipment before it can be put back into use. ⒉High-voltage equipment that has been newly installed, undergoes major repairs, or has been overhauled must be tested in accordance with the specified items and standards before it is put into operation. ⒊All various safety devices used in our factory must undergo regular testing in strict accordance with the specified testing cycles and standards, and can only be used after passing such tests. ⒋All grounding elements used for the grounding of surface electrical equipment and for lightning protection, as well as the grounding resistance, should be measured once a year before the rainy season. In locations where the soil quality is poor, the frequency of these measurements should be increased as appropriate. ⒌For the various mechanical and electrical protection systems in the plant, calibration tests must be carried out annually, based on the grid system plan and changes in load conditions. Before putting the newly installed main equipment into operation, mechanical and electrical calibration tests are conducted. ⒍Participants in the experiment must be electricians or technicians with practical maintenance experience, who have passed the relevant examinations and been issued with certificates permitting them to carry out the experimental procedures. ⒎Experimenters should be familiar with the site and the equipment, strictly follow the electrical experiment procedures, implement proper safety measures at the site as well as safe operating protocols, use instruments and equipment correctly, and conduct experiments accurately. ⒏Strengthen technical management, establish and improve records of major equipment as well as experimental data from previous years; experimental results must be comprehensively and scientifically analyzed on a historical basis, so as to understand the patterns and trends in equipment performance and continuously improve the level of experimental techniques. 28. Inspection System for Substations and Distribution Rooms I. The inspections of equipment in substations and distribution rooms are divided into the following types: 1. Inspections during shift handover. ⒉Regular inspections during regular duty hours, as well as enhanced inspections during holidays. ⒊Special inspections due to weather changes or equipment abnormalities (including unattended substations). ⒋Key supervisory inspections by technical personnel from the competent authorities. ⒌Nighttime patrol. II. The regular inspection times per day are generally set as follows: 1. For a two-shift system: 8:30 and 20:00. 2. A comprehensive inspection of the equipment should be carried out before important holidays, and the inspection frequency should be reduced during those holidays. III. Normal inspections and shift handover inspections shall involve checking each piece of equipment one by one along fixed inspection routes, with the inspection contents and methods specified in the operating procedures for each device. Equipment with defects should be subject to thorough inspection. IV. Special inspections should be conducted in a targeted and focused manner: 1. When the weather turns extremely cold, special attention should be paid to checking whether the oil levels in oil-filled equipment and the pipes are free from freezing damage. ⒉During extreme heat, it is necessary to check whether the temperature of equipment such as transformers is high and to inspect the oil level. ⒊During strong winds, pay special attention to checking the stability of outdoor structures, busbars, leads, etc., as well as to ensure that no foreign objects may strike the operating equipment. ⒋In conditions of light rain, light snow, heavy fog, drizzle, or a mixture of snow and rain, it is necessary to carefully check insulators and bushings for any signs of flashover discharge as well as ice or snow accumulation. ⒌During peak load periods, special attention should be paid to the heating of the high-current components and the connections at various locations. ⒍When the equipment has major defects or abnormalities, or after an accident has been resolved, the inspection cycle should be shortened to enable close monitoring. V. Conduct inspections with the lights turned off at night, at least once a week, to mainly check for defects that are difficult to detect during the day, such as poor contacts, heated contacts, minor local discharges, and dot halos. 29. Calibration Standards for Measuring Instruments: Corresponding calibration standards are established based on the actual needs of production. The main items and accuracy grades are as follows:
I. Accuracy Standards
1) Temperature measurement – Class II standards: Platinum-platinum thermocouples; Resistance thermometers; Mercury thermometers.
2) Pressure measurement: Class II piston-type pressure gauges, Class II piston-type pressure-vacuum gauges, etc.
3) Mass and rotational speed measurement: Class II standard weights in grams and milligrams; Class IV standard magnetic weights in kilograms; Class II standard hydrometers; Standard rotational speed measurement devices with an accuracy of 0.5 grade.
4) Electrical quantity measurement: Standard resistors with an accuracy of 0.01 grade, standard batteries with the same accuracy, DC bridges with an accuracy of 0.02 grade, DC potentiometers with the same accuracy, standard capacitors with an accuracy of 0.1 grade, ammeters with an accuracy of 0.2 grade, voltmeters with the same accuracy, watt meters with the same accuracy, electricity meters with an accuracy of 0.5 grade, and AC potentiometers with an accuracy of 0.1 grade. 4) Flow measurement: standard volumetric tube (0.02 class), standard tank, or flow calibration device (0.1–0.2 class). Standard flow meter (class 0.1 or 0.2), standard bell jar gas flow apparatus (class 0.5). 5) Length measurement: Class 4 standard gauge blocks. 6) Stoichiometry: pH standards, viscosity standard oils, colorimetric standards, chromatography standards, reference materials, primary reagents, standard measuring devices and instruments, etc. 7) Time and frequency measurement: quartz clock, standard frequency meter. 8) The transfer of measurement values from scales and wireless charge meters is carried out by higher-level metrological verification institutions. II. Scope of metering device application (1) Metering of raw materials, materials, crude oil (gas), steam, water (including fresh water, recycled water, treated water, and domestic water, etc., the same below), electricity entering and leaving the enterprise, as well as chemical products and semi-finished goods leaving the factory. Measurement of energy consumption and of the energy-consuming fluids in utility systems such as boilers, power plants, chemical treatment processes, and wastewater treatment. (2) Metering of raw materials, intermediates, and products in the plant’s inlet and outlet devices as well as in the storage and transportation systems, along with the fuel oil, liquefied gas, fuel gas, steam, water, electricity, compressed air, and gases (those supplied continuously with a Dg50 value above) consumed. Measurement of the total amount of steam, water, electricity, liquefied gas, and fuel gas used for auxiliary facilities and daily living within the plant. (3) The total consumption of steam, water, electricity, and fuel gas for off-site living areas and external contractors is measured. (4) Measurement for the detection and monitoring of various parameters in the production process (temperature, pressure, flow rate, liquid level, analysis, mechanical quantities, etc.). (5) Other instruments, standards, and devices used for measuring various quantities to support chemical production. 2. Measurement accuracy refers to the systematic precision of instrument measurements; its value should meet the requirements for economic accounting, technical management, energy conservation, as well as the measurement of raw materials and products entering and leaving the factory. It is also necessary to take into account the actual conditions of existing measuring instruments in the country. (1) The domestic measurement accuracy for raw materials and oils entering the plant, as well as liquid lubricants leaving the plant, should be no less than ±0.35% (on a weight basis) ； The measurement accuracy for international trade should be no less than ±0.2% (based on volume) ； The measurement accuracy for steam and water entering and leaving the plant should be no less than ±2.5%, while the measurement accuracy for electricity entering and leaving the plant should be no less than ±1.0% (for active power meters) or ±2.0% (for reactive power meters). (2) The metering accuracy at the factory exit for fuel gas should be no less than ±2.5%, while that for fuel oil and liquefied petroleum gas should be no less than ±0.5%. (3) The measurement accuracy of the liquid raw materials, intermediate products, and products entering and leaving the device should be no less than ±0.5% (for volumetric types) or no less than ±1.5% (for differential pressure types). (4) The measurement accuracy for steam, water, compressed air, and fuel gas consumed by inlet/outlet devices, storage and transportation systems, as well as utility systems, should be no less than ±2.5%; the measurement accuracy for fuel oil should be no less than ±1.5%; the measurement accuracy for electricity usage should be no less than ±2.0%; and the measurement accuracy for electricity usage in the staff dormitories in the residential area should also be no less than ±2.0%. (5) The static measurement accuracy for solid raw materials and fuels entering and leaving the plant should be no less than ±0.2%, while the dynamic measurement accuracy should be no less than ±0.5%. The static measurement accuracy for solid raw materials and fuels within the plant should be no less than ±0.5%. (6) The measurement accuracy of other quantities can be determined with reference to the system accuracy of the corresponding media mentioned above. 30. Shift handover system and shift management: 1. Those responsible for shift handovers must prepare in advance; they should arrive 10 minutes early and carefully record the details of the handover as well as any issues present in the operation records and shift handover logs ； 2. Shift handover contents: (1) Instructions from leadership or inspections by superiors ； (2) Equipment operation status and main parameters ； (3) Progress of key tasks during the shift ； (4) Key points to keep in mind for safe production when leaving work ； (5) Major and minor accidents as well as potential safety hazards that occur during the production process of this team ； (6) Are there any abnormalities in the safety protection facilities? ； (7) Tools, fire-fighting equipment, and indoor hygiene ； 3. During shift handover, it must be ensured that: shift handover is not permitted if the documentation and data records are incomplete ； Positions in special types of work are not assigned to those who work without proper licenses or those who do not wear adequate personal protective equipment ； The incident or fault being handled is not to be handed over ； 4. The handover process must be carried out carefully; any issues identified by the person handing over the duties must be addressed promptly. Issues detected before the handover are the responsibility of the person handing over, and only after the person taking over confirms that everything is in order can the former leave. 5. After the handover is complete, all issues, large or small, identified shall be the responsibility of the person taking over; the person handing over bears no responsibility whatsoever ； 6. After the shift handover, neither party may leave their post unless signatures are obtained or all issues are resolved ； 7. After the shift handover is completed, both parties sign the record book to confirm it. Regulations of the People’s Republic of China on Electrical Safety in Explosive Hazardous Areas” (Trial Version) “Maintenance of Electrical Equipment for Use in Explosive Environments