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GB 51354-2019: Technical standard for operation, maintenance and safety management of urban utility tunnel
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Technical standard for operation, maintenance and safety management of urban utility tunnel
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GB 51354-2019
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Basic data | Standard ID | GB 51354-2019 (GB51354-2019) | | Description (Translated English) | Technical standard for operation, maintenance and safety management of urban utility tunnel | | Sector / Industry | National Standard | | Classification of Chinese Standard | P50 | | Classification of International Standard | 91.020 | | Word Count Estimation | 82,824 | | Date of Issue | 2019 | | Date of Implementation | 2019-08-01 | | Issuing agency(ies) | Ministry of Housing and Urban-Rural Development of the People's Republic of China; State Administration for Market Regulation | GB 51354-2019: Technical standard for operation, maintenance and safety management of urban utility tunnel
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1 General
1.0.1 This standard is formulated in order to standardize the operation and maintenance of urban underground comprehensive utility corridors, unify technical standards, and ensure the integrity, safe and stable operation of comprehensive utility corridors.
1.0.2 This standard is applicable to the operation, maintenance and safety management of the main body of the urban underground comprehensive utility corridor, ancillary facilities and pipelines entering the corridor.
1.0.3 The operation management unit and the corridor pipeline unit should have a clear division of labor, a clear interface, mutual cooperation, and smooth communication.
1.0.4 The utility tunnel must implement 24h operation maintenance and safety management.
1.0.5 The operation and management unit should have relevant professional ability and experience, and the operation, maintenance operations and safety management personnel should meet the relevant job requirements.
1.0.6 Qualified equipment, tools and materials should be selected for the operation, maintenance and safety management of the integrated utility tunnel, and the instruments, meters and measuring tools used should be regularly verified or calibrated within the validity period.
1.0.7 Records should be made during the operation, maintenance and safety management of the utility tunnel, and the problems found should be analyzed and dealt with in time.
1.0.8 The operation, maintenance and safety management of urban underground comprehensive utility corridors shall not only comply with this standard, but also comply with the current relevant national standards.
2 terms
2.0.1 utility tunnel
Structures and ancillary facilities built underground to accommodate two or more engineering pipelines.
2.0.2 utility tunnel pipeline
Various urban engineering pipelines such as water supply, rainwater, sewage, reclaimed water, natural gas, heat, electricity, and communications laid in the comprehensive pipe gallery.
2.0.3 Ownership section of utility tunnel pipeline
The operation or ownership unit of the corridor pipeline.
2.0.4 Operation and maintenance management section
The unit responsible for the operation, maintenance and safety management of the main body of the urban underground comprehensive utility corridor and its auxiliary facilities.
2.0.5 The main body of utility tunnel
The structural main body of the comprehensive pipe gallery and structures such as personnel entrances and exits, hoisting openings, escape openings, ventilation openings, pipeline branch openings, supports and hangers, waterproof and drainage facilities, maintenance roads and air ducts.
2.0.6 Accessorial works
In order to ensure the stable operation of the main body of the comprehensive utility corridor, the internal environment, and the pipelines entering the corridor and the safety of personnel, supporting facilities such as fire protection, ventilation, power supply, lighting, monitoring and alarm, water supply and drainage, and identification are constructed.
2.0.7 normal monitoring
Use means and methods such as instrument measurement, on-site inspection or remote video monitoring to collect information reflecting the daily operation status, changing characteristics and development trends of the comprehensive utility corridor, and conduct analysis and feedback activities.
2.0.8 Special monitoring special monitoring
Targeted monitoring activities for diseases and environmental factors that may affect the operation safety of comprehensive utility corridors refer to activities that continuously monitor certain indicators during a certain period of time.
3 basic rules
3.1 Operation Management
3.1.1 The comprehensive utility gallery shall be accepted for acceptance before it is put into operation.
3.1.2 The operation management of the comprehensive utility gallery shall include on-duty, patrol inspection, daily monitoring, access management, operation management, etc.
3.1.3 The operation management of the comprehensive utility gallery should formulate a sound management system, working standards and operating procedures, and revise them regularly.
3.1.4 The operation and management of the comprehensive utility gallery shall be equipped with on-duty personnel, and the content of on-duty work shall include monitoring, control, dispatching and liaison.
3.1.5 The patrol inspection shall comply with the following regulations.
1 The inspection objects should include the main body of the pipe gallery, auxiliary facilities, pipelines entering the gallery, and the internal and external environment of the comprehensive pipe gallery;
2 Inspection personnel should carry professional inspection equipment and take protective measures;
3 The patrol inspection scope should cover the safety protection area and safety control area;
4 The inspection method should be manual, information technology or a combination of the two;
5 In case of emergency, emergency measures shall be taken in accordance with relevant national regulations.
3.1.6 The daily monitoring objects should include the main body of the pipe gallery, auxiliary facilities, environment inside the gallery and pipelines entering the gallery.
3.1.7 The personnel, equipment, tools, materials and carrying items entering and leaving the utility corridor shall be controlled and registered.
3.1.8 Inspection, testing, maintenance, construction and other operations shall comply with the following regulations.
1 Relevant procedures should be completed for fire, electricity, temporary dismantling of facilities or storage of tools and materials in the utility corridor;
2.Work within the allowed time and scope;
3 The branch opening of the pipeline opened during the operation should be blocked in time;
4 The job site should be cleaned up in time;
5 After the operation is completed, the acceptance should be carried out in time;
6 It is strictly forbidden to bring flammable, explosive and dangerous chemicals into the corridor without permission.
3.2 Maintenance Management
3.2.1 The maintenance and management of the comprehensive utility gallery shall include facility maintenance, testing, major and medium repairs and renovations, spare parts management, etc.
3.2.2 A maintenance plan shall be prepared for facility maintenance, and the whole-process tracking management shall be carried out on the initiation time, initiation reason, operation process, quality acceptance, etc. of the maintenance work.
3.2.3 Facility maintenance shall include the following main contents.
1 Periodic testing or testing of the main performance of the facility;
2 Periodic lubrication, anti-corrosion, fastening, dredging and replacement of consumables and other maintenance work;
3 Maintenance of facility defects, repair or replacement of substandard equipment and its components;
4 Cleaning, clearing, dust removal and other cleaning work of internal and external environment and facilities and equipment.
3.2.4 The main body of the pipe gallery, auxiliary facilities and pipelines entering the gallery shall be tested regularly according to the provisions of this standard, and the test results shall be processed in a timely manner.
3.2.5 When one of the following situations occurs, the inspection shall be carried out in time.
1 Reach the design service life of the facility;
2 After several small-scale repairs, the same disease or failure occurs repeatedly, and the scope or degree of influence gradually increases;
3 Due to natural disasters, environmental impacts, pipeline accidents, equipment accidents, etc., causing relatively large damage to the facilities;
4 Other situations that require timely detection.
3.2.6 When the following situations occur, major and medium repairs and renovations should be carried out.
1 There is a major defect in the main body of the pipe gallery. After testing or identification, it is recommended to carry out major and medium repairs;
2 There are major diseases or systematic failures in the auxiliary facilities and pipeline facilities in the corridor, and after inspection or identification, it is determined that their operation quality or function cannot meet the design standards or safe operation requirements, and should be updated;
3 Ancillary facilities and access corridor pipeline facilities have reached the design service life or service life, and do not meet the safe use requirements after evaluation;
4 The ancillary facilities of the comprehensive utility corridor and the pipeline facilities entering the corridor need to be changed, increased original functions or improved main performance due to technical upgrading and other reasons;
5 Other situations where major and medium repairs and renovations are required.
3.2.7 Major and medium repairs and renovations shall be organized and implemented according to engineering projects, including planning and decision-making, survey and design, organization of construction, acceptance and other work content.
3.2.8 During the maintenance process of the comprehensive pipe gallery, the storage, maintenance and use of spare parts required for maintenance should be managed, and a management ledger should be established.
3.3 Security Management
3.3.1 The safety management of the comprehensive utility gallery shall include access safety, operation safety, information safety, environmental safety, safety protection, emergency management, etc.
3.3.2 Units engaged in the operation and maintenance of the main body of the comprehensive utility corridor, auxiliary facilities and pipelines entering the corridor should establish a safety management system.
3.3.3 Personnel entering and exiting the comprehensive utility corridor shall comply with the following regulations.
1 Do not enter without permission;
2 It is strictly forbidden for a single person to enter the comprehensive utility corridor;
3.Should have passed the safety training for entering corridors;
4 It should be inspected first, then ventilated, and enter after confirming that the environmental parameters meet the safety requirements;
5.Personnel entering the corridor should be equipped with necessary protective equipment, testing instruments and emergency equipment;
6 Smoking is strictly prohibited in the integrated corridor.
3.3.4 Operational safety management shall comply with the following regulations.
1 The interior of the pipe gallery shall have the ventilation, lighting and other conditions required for the operation, and shall continue to maintain a safe working environment;
2 The job site should be supervised by special personnel, warning signs should be set up according to the regulations, and the communication with the monitoring center should be kept smooth;
3 For special operations, corresponding protective measures should be taken in accordance with relevant national regulations.
3.3.5 Personnel, equipment, instruments and operating procedures for operation, maintenance and safety management in areas with explosion-proof requirements for comprehensive utility corridors shall comply with the corresponding explosion-proof safety regulations.
3.3.6 Information security management shall meet the following requirements.
1 Confidential drawings, materials, documents, data, etc. shall be managed in accordance with the relevant national regulations on confidentiality work;
2 The information system and its equipment configuration should comply with the relevant provisions of the current national standard "Basic Requirements for Information System Security Level Protection of Information Security Technology" GB/T 22239;
3 The information system and its equipment shall have anti-virus and anti-network intrusion measures, and its content and requirements shall comply with the provisions in Table 3.3.6; the security routers and firewalls involved in the information system shall pass the certification of the national information security evaluation and certification agency;
4 The information security of pipelines entering corridors shall comply with the relevant provisions of the current industry standard "Technical Specifications for Urban Comprehensive Underground Pipeline Information System" CJJ/T 269.
Table 3.3.6 Contents and requirements of anti-virus and anti-network intrusion measures for information systems and their equipment
3.3.7 According to the area to which the comprehensive utility corridor belongs, the structural form, the condition of the pipelines entering the corridor, the impact of internal and external engineering construction, etc., the identification and risk assessment of the hazards that may affect the operation safety of the comprehensive utility corridor should be carried out.
3.3.8 The operation management unit and the corridor pipeline unit shall formulate special emergency plans according to the types of accidents that may occur.
3.3.9 For the emergency management of the comprehensive utility gallery, it is advisable to establish an intelligent emergency management system based on information technology and artificial intelligence for early warning, response, and plan management.
3.3.10 The training and drill of the emergency plan should be organized regularly, not less than once a year; the evaluation and revision of the emergency plan should be carried out regularly, preferably once a year, and it should be timely according to the situation of the pipeline entrance and the surrounding environment. Revised and perfected.
3.3.11 Comprehensive utility tunnel emergency management should establish a complete emergency guarantee mechanism, which should include communication and information guarantee, emergency team guarantee, material and equipment guarantee, financial guarantee and other guarantees.
3.3.12 When emergencies such as fire, earthquake, natural gas leakage in the corridor, and thermal pipeline leakage in the corridor are encountered during the operation, maintenance and safety management of the integrated utility tunnel, the emergency response procedure should be started immediately and handled in a timely manner; Carry out order restoration and damage assessment according to the requirements of the emergency plan.
3.4 Information Management
3.4.1 The operation, maintenance and safety management of the utility tunnel shall adopt information management means, and a corresponding information management system shall be established.
3.4.2 The operation management unit and the corridor pipeline unit should be able to share key information such as safe operation and emergency response.
3.4.3 The information management of the comprehensive utility gallery should collect, collate, count, analyze and apply the whole process information of operation maintenance and safety management.
3.4.4 The technical archives of the integrated pipe gallery should be managed informatization and digitalization.
3.4.5 The management of the technical files of the comprehensive utility gallery shall comply with the relevant provisions of the current industry standard CJJ/T 158 "Code for Management of Urban Construction Archives".
3.4.6 The technical archives of the utility tunnel shall include the following contents.
1 Ledger of pipe gallery body and auxiliary facilities and equipment;
2 Completion data of the main body of the pipe corridor, auxiliary facilities and pipelines entering the corridor;
3 Operation and maintenance and safety management data, records, emergency response and analysis reports;
4 Periodic testing and monitoring, special testing and monitoring reports;
5.Other planning and design materials related to the corridor entry requirements of pipelines.
3.4.7 The technical archives of pipelines entering the gallery shall be filed with the operation and management unit within 3 months after the completion of pipeline laying, relocation, modification and abandonment.
3.4.8 The management of electronic technical archives shall comply with the relevant provisions of the current industry standards CJJ/T 117 of "Code for the Construction of Electronic Documents and Electronic Archives Management" and "CJJ/T 187 of "Metadata Standards for the Construction of Electronic Archives".
3.4.9 The comprehensive utility gallery data should include geographical information data, pipeline data, operation data, maintenance data and other information.
3.4.10 It is advisable to establish an operation database for the comprehensive utility corridor, which should have the function of expansion and heterogeneous data compatibility. The content of the operation database should be complete, accurate and standardized, and a unified naming rule, classification code and identification code system should be established.
3.4.11 An effective data backup and recovery mechanism should be established for the comprehensive utility corridor data management.
3.4.12 The storage time of video surveillance data should not be less than 30 days, and other data should be stored and backed up for a long time.
4 pipe gallery body
4.1 General provisions
4.1.1 The main body operation maintenance and safety management objects of the pipe gallery shall include the main structure of the comprehensive pipe gallery and personnel entrances and exits, hoisting openings, escape openings, ventilation openings, pipeline branch openings, supports and hangers, waterproof and drainage facilities, maintenance channels and air ducts and other structures.
4.1.2 The main content of the operation, maintenance and safety management of the main body of the pipe gallery shall include inspection, detection and monitoring of the main body of the pipe gallery, maintenance of the main body of the pipe gallery, etc.
4.2 Security protection
4.2.1 The outer edge of the safety protection range of the main structure of the pipe gallery body should not be less than 3m from the outer edge of the main structure.
4.2.2 Within the scope of safety protection, the following behaviors that affect the safe operation of the utility tunnel shall not be engaged in.
1 Discharging and dumping corrosive liquids, gases and other harmful substances;
2 Excavation of rock and soil;
3 Pile up soil or pile up construction materials, construction waste, etc.;
4 Other behaviors that endanger the safe operation of the utility tunnel.
4.2.3 A safety control area should be set up for the comprehensive utility gallery. The distance from the outer edge of the safety control area to the outer edge of the main structure should not be less than 15m. The outer edge of the safety control area of the comprehensive utility gallery constructed by shield method should not be less than 50m from the outer edge of the main structure. The impact of engineering survey, design and construction to be carried out within the safety control area on the main structure should meet the requirements of the safety control indicators for the comprehensive utility corridor structure.
4.2.4 Engage in deep foundation pit excavation, dewatering, blasting, pile foundation construction, underground excavation, jacking and grouting operations in the safety control area that may affect the safe operation of the comprehensive utility gallery. Safety assessment should be carried out in advance. The main body of the pipe gallery involved and the pipelines that may be affected should be monitored, and safety protection control measures should be taken.
4.2.5 When the comprehensive pipe gallery crosses the water body, the net distance control and management value of the ship’s anchoring and anchor towing operations should be greater than 100m; when dredging and dredging operations are carried out, the covering soil above the comprehensive pipe gallery structure should not be less than the design thickness.
4.3 Pipe gallery body inspection
4.3.1 The items and content of the main body inspection of the pipe gallery shall comply with the provisions in Table 4.3.1.
Table 4.3.1 Inspection Items and Contents of Pipe Gallery Body
4.3.2 The patrol inspection of the main body of the pipe gallery should be reasonably determined in combination with factors such as the operation situation and the external environment. The inspection frequency of the main structure inside the comprehensive pipe gallery should not be less than once a week. The frequency of inspection should not be less than once a day, and the frequency of inspections in safety control areas should not be less than once a day. In special circumstances such as extreme abnormal weather, complex surrounding environment, and disaster warning, the frequency of inspections should be increased.
4.3.3 The inspection records of the main body of the pipe gallery shall include the inspection time, inspection scope, inspection personnel, and the type of disease, degree of disease, and location of the disease found during the inspection.
4.4 Detection and monitoring
4.4.1 The inspection plan of the main body of the pipe gallery should be formulated according to the construction period, operation conditions, existing inspection and monitoring data, existing technical evaluation, and surrounding environment.
4.4.2 The inspection of the main body of the pipe gallery shall be carried out regularly and shall comply with the following regulations.
1 Necessary measuring instruments and equipment such as image recording equipment, crack observer, detection tools and auxiliary equipment should be equipped;
2 The corresponding regular inspection plan and implementation plan should be formulated according to the construction technology, structural form, and geological conditions of the integrated utility tunnel;
3 Before formulating the implementation plan for each periodic inspection, review the previous inspection reports and verify the implementation of the recommendations in the periodic inspection reports, and make adjustments and revisions in a timely manner.
4.4.3 The main content and cycle of the regular inspection of the main body of the pipe gallery shall comply with the provisions of Table 4.4.3 and shall include the following contents.
1 Check the basic data of the pipe gallery body on site against the technical archives;
2 Record the disease and damage status, judge the cause of the disease and damage on the spot, and determine the maintenance scope and plan.
3 Provide further testing suggestions for difficult-to-judgment diseases and damaged parts;
4 Provide maintenance suggestions for comprehensive utility corridors with serious diseases or damages;
5 Determine the next inspection time according to the technical status;
6 Issue a test report, including electronic documents and written reports.
Table 4.4.3 Main content and period of regular inspection of pipe gallery body
4.4.4 When any of the following situations occurs, the relevant content shall be detected in time.
1 After repeated small-scale repairs, structural damage or water leakage occurs repeatedly, and the scope or degree of influence gradually increases;
2 After suffering disasters or accidents such as earthquakes, fires, and explosions;
3 Affected by the surrounding environment, the structural deformation monitoring exceeds the warning value or shows an abnormal increase in the displacement rate;
4 Items or contents that need to be tested are found during the inspection;
5 Other situations that require testing, such as structural modification and use change.
4.4.5 In case of one of the following situations, special monitoring shall be carried out on the relevant areas or parts of the main structure of the main body of the pipe gallery.
1 The geological conditions are complex, and the structure may be deformed at the junction of the artificial foundation and the natural foundation or at the boundary of different structures;
2 Large changes in hydrogeology may affect the safety and stability of the structure;
3 Cracks, water leakage and other diseases are abnormal or the rate of change is relatively large;
4 There are factors affecting structural safety in the safety protection scope and safety control area.
4.4.6 The special monitoring of the pipe gallery body shall meet the following requirements.
1 The monitoring plan should be formulated according to factors such as the geological conditions of the integrated utility tunnel, construction technology, structural form, external operation impact characteristics or safety assessment results;
2 The structural deformation monitoring should be the main focus, and the vertical displacement monitoring should reflect the uneven settlement of the structure;
3 The accuracy level of structural deformation monitoring should not be lower than the third class, and the deformation monitoring accuracy level of the main line and branch line comprehensive pipe gallery should be the second class;
4 Structural deformation monitoring should adopt automatic monitoring method.
4.4.7 Structural deformation monitoring measuring points shall be set at positions or monitoring sections that can reflect the structural deformation characteristics of the pipe gallery, and the arrangement of structural deformation monitoring measuring points for rectangular or circular sections shall comply with the provisions in Table 4.4.7.
Table 4.4.7 Arrangement of Measuring Points for Deformation Monitoring of Rectangular or Circular Section Structures
4.4.8 The structural deformation detection and monitoring alarm value of the comprehensive utility gallery shall comply with the provisions in Table 4.4.8.
Table 4.4.8 Structural detection and monitoring alarm values
4.4.9 The monitoring time and cycle of the structural deformation of the integrated pipe gallery shall be comprehensively determined based on factors such as buried depth, structural form, construction method, deformation characteristics, deformation rate, observation accuracy, and engineering geological conditions; Appropriate adjustments. In the early stage of the operation of the integrated pipe gallery, it should be monitored once a quarter in the first year, and once every six months in the second year. When the deformation is found to be significant or the deformation rate is significantly increased, the number of observations or continuous observations should be increased.
4.4.10 The structural deformation monitoring of the comprehensive pipe gallery due to the influence of surrounding construction operations should be started before the construction operation, and can only be stopped after the operation is completed and the deformation is stable.
4.4.11 During the detection or monitoring process, data processing should be carried out in time. When the following situations occur as a result of data processing, the operation and management unit must be notified immediately to take corresponding measures.
1 The amount of deformation reaches the warning value;
2 Abnormal changes in deformation;
3 Structural cracks, surface cracks, seepage water, etc. increase rapidly.
4.4.12 The detection content and method of the main body of the pipe gallery shall comply with the provisions in Table 4.4.12.
Table 4.4.12 Inspection content and method of pipe gallery body
4.4.13 The detection and monitoring of the main body of the pipe gallery should still comply with the relevant provisions of the current national standards "Code for Engineering Survey" GB 50026, "National First and Second Level Level Surveying Specifications" GB/T 12897 and "Code for Building Deformation Measurement" JGJ 8.
4.5 Maintenance of the main body of the pipe gallery
4.5.1 The maintenance of the main body of the pipe gallery shall include the repair, maintenance and cleaning of the main body of the pipe gallery.
4.5.2 The maintenance content and method of the main body of the pipe gallery shall comply with the provisions in Table 4.5.2.
Table 4.5.2 Main maintenance content and method of pipe gallery
4.5.3 Other exposed metal components of the pipe gallery body should be fastened, repaired, anti-corrosion and replaced in time.
4.5.4 The structural floor, walls, brackets and other parts should be cleaned regularly.
4.5.5 Embedded parts and post-anchor anchor bolts should be reinforced in time if there are damage phenomena that affect the bearing capacity.
4.5.6 The sump and drainage ditches should be dredged regularly; special dredging should be carried out before and after the flood season.
4.5.7 The maintenance of the reinforced concrete structure and steel structure of the main body of the pipe gallery shall still comply with the current national standard "Visual assessment of surface cleanliness of steel surface treatment before coating Part 1.Uncoated steel surface and comprehensive removal of original materials. Corrosion grade and treatment grade of coated steel surface" GB/T 8923.1, "Steel Structure Engineering Construction Quality Acceptance Standard" GB 50205 and "Technical Regulations for Durability Repair and Protection of Concrete Structures" JGJ/T 259, And should meet the structural design requirements.
4.5.8 The leakage control of the main body of the pipe gallery should still meet the relevant provisions of the current national standard "Technical Specifications for Waterproofing of Underground Engineering" GB 50108 and "Technical Regulations for Underground Engineering Leakage Control" JGJ/T 212.
5 Ancillary facilities
5.1 General provisions
5.1.1 The operation, maintenance and safety management objects of the ancillary facilities of the utility tunnel shall include systems such as fire protection, ventilation, power supply, lighting, monitoring and alarm, water supply and drainage, and identification.
5.1.2 The maintenance of the ancillary facilities of the integrated pipe gallery shall be implemented in accordance with the requirements of the product manual, system maintenance manual and relevant technical specifications.
5.1.3 The inspection and maintenance of the ancillary facilities of the utility tunnel should be carried out in units of different ancillary facility systems.
5.1.4 When extreme weather and operating environment changes such as typhoon warning, lightning warning, high temperature warning, and strong cold weather may threaten the safe operation of the utility tunnel, the inspection frequency of the power supply system, drainage system, and monitoring and alarm system should be strengthened.
5.2 Fire fighting system
5.2.1 The objects of operation, maintenance and safety management of the integrated pipe gallery fire protection system shall include fire separation, automatic fire alarm system, fire extinguishing system, smoke exhaust system, fire indication signs and fire extinguishing equipment and other facilities and equipment.
5.2.2 The inspection, repair, maintenance and other operation and maintenance work of the comprehensive pipe gallery fire protection system shall comply with the relevant provisions of the current national standard "Maintenance and Management of Building Fire Protection Facilities" GB 25201; the inspection of the fire protection system shall be based on the inspection of fire protection facilities Mainly, the inspection should not be less than once a week.
5.2.3 The inspection of the comprehensive pipe gallery fire protection system should not be less than once a year, and the system inspection should include all system equipment, components, etc.; the inspection technical requirements and methods should comply with the current industry standard "Technical Regulations for Inspection of Building Fire Protection Facilities" GA 503 The relevant provisions.
5.2.4 The operation and maintenance of the fire control room of the comprehensive utility gallery shall comply with the relevant provisions of the current national standard "General Technical Requirements for Fire Control Room" GB 25506.
5.2...
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