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Delivery: <= 10 days. True-PDF full-copy in English will be manually translated and delivered via email. GB 55026-2022: Project code for urban water supply engineering Status: Valid
Basic dataStandard ID: GB 55026-2022 (GB55026-2022)Description (Translated English): Project code for urban water supply engineering Sector / Industry: National Standard Word Count Estimation: 83,835 Date of Issue: 2022-03-10 Date of Implementation: 2022-10-01 Issuing agency(ies): Ministry of Housing and Urban-Rural Development of the People's Republic of China; State Administration for Market Regulation GB 55026-2022: Project code for urban water supply engineering---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.1 General 1.0.1 This specification is formulated to ensure the safety of urban water supply, standardize the construction and operation of urban water supply projects, save resources, and provide technical basis for government supervision. 1.0.2 Urban centralized water supply engineering projects must implement this specification. 1.0.3 Urban water supply projects should follow the principles of safe water supply, guaranteed services, resource conservation, environmental protection, and coordinated development with the natural cycle of water. 1.0.4 Whether the technical methods and measures adopted in the project construction meet the requirements of this specification shall be judged by the relevant responsible parties. Among them, innovative technical methods and measures should be demonstrated and meet the performance requirements in this specification. 2 Basic regulations 2.1 Scale and layout 2.1.1 Cities must build water supply projects that meet the needs of their social and economic development. Urban water supply projects should have the capability of continuous and uninterrupted water supply to meet the needs of users for water quality, water quantity and water pressure. 2.1.2 The amount of urban water supply should be coordinated with the available water resources. 2.1.3 Urban water supply planning should be based on scientifically predicting urban water consumption and water load, rationally develop and utilize water resources, coordinate the layout of water supply facilities, and guide the construction of water supply projects. Coordinate environmental protection planning and disaster prevention planning, and connect with special planning for urban drainage and sponge city planning. 2.2 Construction requirements 2.2.1 During the construction and operation of urban water supply projects, the requirements of production safety, occupational health and safety, fire safety, anti-terrorism and ecological safety must be met. 2.2.2 The urban water supply project of the factory shall have the emergency water supply capacity to deal with emergencies such as natural disasters, accident disasters, public health incidents and social security incidents. 2.2.3 The anti-seismic fortification category of the main facilities of the urban water supply project shall be the key fortification category. 2.2.4 The flood control standards of urban water supply projects shall not be lower than the local fortification requirements. 2.2.5 The main structure and water transmission and distribution pipelines of the main structures in the urban water supply project shall have a structural design working life of not less than 50 years, and the safety level shall not be lower than Class II. 2.2.6 The water-wading equipment, materials and agents in urban water supply projects must meet the hygienic and safety requirements. 2.2.7 Urban water supply projects shall give priority to water-saving and energy-saving processes, equipment, appliances and products. 2.2.8 Urban water supply projects shall determine the corresponding anti-corrosion measures for structures, equipment and pipelines according to the corrosive nature and environmental conditions of the storage or transmission medium. 2.2.9 The noise, waste water, waste gas, dust and solid waste generated during the construction and operation of urban water supply projects should not cause harm to the surrounding environment and human health, and should meet the requirements for ecological environment protection and control. 2.2.10 When urban water supply projects are rebuilt or expanded, water supply safety shall be ensured. And the adjacent facilities should be protected. 2.2.11 The quality acceptance of urban water supply projects shall be carried out in accordance with the acceptance items and procedures stipulated by the state. 2.2.12 The regulation and storage facilities for domestic drinking water shall have sanitation protection measures to ensure water quality safety, and shall be cleaned and disinfected regularly. 2.2.13 The emptying and overflowing pipes of drinking water regulation and storage facilities are strictly prohibited from being directly connected to the drainage pipes, and the surrounding areas should be unimpeded in drainage, and sewage backflow and leakage are strictly prohibited. 2.2.14 The power supply system of urban water supply projects shall meet the requirements for continuous and safe operation of water supply facilities, and the electromechanical equipment and its systems shall guarantee the production capacity requirements in case of maintenance or failure. 2.2.15 The automatic control system and water supply dispatching system of the urban water supply project shall be safe, reliable and operate continuously. It should have functions such as real-time monitoring, data collection and processing, data storage, accident warning, and emergency response. 2.2.16 "The information system of the urban water supply project shall be an integral part of the digital urban information system. The use and management of information security, cryptographic products and cryptographic technologies shall comply with relevant national regulations. 2.2.17 Water sources, water supply stations and pipe networks should be equipped with online monitoring instruments to ensure water supply safety and meet process requirements, and the instruments should be verified and calibrated according to regulations, and records should be kept. 2.2.18 Water sources, water supply stations and pipe networks shall take physical and electronic precautions to ensure the safety of water supply facilities. 2.2.19 In urban water supply projects, the power supply load level of water intake projects, clean (distribution) water projects, and transfer stations should not be lower than the requirements in Table 2.2.19; when the requirements in Table 2.2.19 cannot be met, a backup power facilities. 2.2.20 The structures and electromechanical equipment of water supply facilities should take measures to prevent lightning strikes, and electronic and electrical equipment should also take measures to eliminate lightning electromagnetic pulses. 2.3 Operation and maintenance 2.3.1 The operation and maintenance of urban water supply projects should formulate corresponding operating procedures and strictly implement them. 2.3.2 Urban water supply projects shall implement full life cycle management and establish full process files. 2.3.3 The operation and maintenance of electrical facilities in urban water supply projects shall comply with the provisions of the electrical work safety regulations and meet the safety requirements. 2.3.4 When the urban water supply system needs to stop water, it should be notified in advance; when an emergency occurs, it should be notified in time. 3 Water quality, quantity and pressure 3.1 Water quality 3.1.1 The quality of drinking water in urban water supply must comply with the relevant provisions of the current national standard "Sanitary Standards for Drinking Water" GB 5749. 3.1.2 The water supply unit must establish a water quality early warning system based on water quality risks, improve emergency water purification technology and facilities, formulate emergency plans for water sources and water supply emergencies, and conduct regular emergency drills; Take effective countermeasures. 3.1.3 The water quality inspection items and frequency of centralized water supply shall meet the following requirements. 1 The source water should be combined with the actual situation of the water source to determine the items that should be inspected daily and monthly. 2 The water quality inspection items and inspection frequency of factory water, pipe network water and pipe network tip water shall meet the requirements in Table 3.1 and 3. 3.1.4 Manual sampling points or online monitoring points must be set up at water intakes, water plant outlets, residential water points, and at the end of pipe networks in accordance with the principle of representative water quality. The online monitoring data of water intakes of water sources and outlets of water plants should be transmitted to the control system of corresponding water plants in real time. 3.1.5 When the water quality testing results are abnormal, relevant water quality testing items and testing frequency should be increased. 3.1.6 Water quality testing shall be carried out in accordance with the standard testing methods stipulated by the state. 3.2 Water quantity 3.2.1 The design scale of the water supply project shall meet the maximum daily water consumption within the planning period of the water supply scope. 3.2.2 When 25% of the daily water supply in a year reaches more than 95% of the construction scale, the necessity of new construction or expansion of water supply projects should be demonstrated. 3.2.3 The emergency water supply scale of the urban water supply system shall meet the basic domestic water requirements of the residents within the water supply area. 3.2.4 Urban water supply systems must measure water supply and water consumption. 3.2.5 The following water volumes within the scope of urban water supply shall be measured. 1 self-produced water supply; 2 Outsourced water supply; 3 Among the water consumption of registered users, household water consumption, public service water consumption, production and operation water consumption, and water output to adjacent regional pipe networks, etc. 3.2.6 Water measuring instruments used for trade settlement shall accept mandatory verification during use. 3.3 Water pressure 3.3.1 The service pressure of the urban water supply network shall comply with the regulations of the local planning. 3.3.2 The urban water distribution network should continue to operate under stable positive pressure. 4 Water source and water intake project4.0.1 The selection of urban water supply sources should be based on the results of water resources survey and evaluation to ensure sufficient water intake and ensure reliable water quality. Blind development is strictly prohibited. 4.0.2 Water intake facilities and demarcated protected areas of urban water supply sources. Appropriate water quality safety measures should be provided. 4.0.3 Cities with a single water supply should build emergency water sources or backup water sources, and the backup water sources should be able to alternate with the regular water sources for backup and switch operation. 4.0.4 The designed water intake of the water intake project shall include the maximum daily water supply of the water plant, the self-use water volume of the treatment system and the leaked water volume of the raw water delivery pipe (canal). 4.0.5 When the water source is groundwater. The amount of water withdrawn should not exceed the allowable extraction amount. 4.0.6 When the water source is surface water, the annual guarantee rate of the design low water flow rate and the design low water level guarantee rate shall not be lower than 90%, and the water source must be located in the water intake section specified in the water body functional zoning. 4.0.7 Surface water intake structures should be constructed according to hydrology, topography, geology, construction, navigation and other conditions, and a technically feasible, economically reasonable, safe and reliable scheme should be selected. 4.0.8 When water is drawn from rivers with high turbidity, rivers entering the sea and tidal rivers, lakes and reservoirs, the location selection of water intake facilities and the measures taken to avoid sand, salt, algae, and ice should ensure the quality and quantity of water intake are safe and reliable. 4.0.9 The flood control standard of the water intake structure of the reservoir shall be the same as that of the main buildings such as the dam of the reservoir, and two-level standards of design and verification shall be adopted. When the onshore water intake pump house adopts an open forebay and suction well (inlet pool), the elevation of the top of the well (pool) shall be designed according to the flood control standard of the river center type and shore type water intake pump house. 4.0.10 An obvious signboard shall be installed in the appropriate section from the upstream to the downstream of the fixed water intake. For navigable rivers, warning lights and anti-collision protection facilities should also be installed on the water intake. 4.0.11 Patrol management should be carried out within the scope of the first-level protected areas of groundwater sources and well group facilities. 4.0.12 Patrol management must be carried out within the range of 1000m upstream to 100m downstream of surface water source primary protection areas or surface water intake structures. For rivers with tides, it should be determined whether to expand the scope of inspection and management according to the actual situation.5 water plant5.1 General provisions 5.1.1 The water quality of the water supply plant shall not be lower than the relevant provisions of the current national standard "Drinking Water Sanitation Standard" GB 5749, and the necessary safety redundancy shall be left. 5.1.2 The design scale of the water supply plant shall meet the requirements of comprehensive domestic water consumption, water consumption of industrial enterprises, water consumption of watering roads and green spaces, water leakage of pipe network and unforeseen water consumption on the highest day within the design period of the water supply scope. When the above-mentioned part of the water is supplied by unconventional water resources, the design scale of the water supply plant should deduct this part of the water. 5.1.3 For the main facilities and equipment in the water production of the water supply plant, an inspection and maintenance system should be formulated and implemented; for the operation of the main processes and the dynamic technical parameters during operation, a quality control point inspection system should be formulated and implemented. 5.1.4 The personnel directly engaged in water production and water quality inspection in the water supply plant shall have regular physical examinations and shall hold their health certificates for employment. 5.2 Factory area 5.2.1 The site selection of the water supply plant shall be determined after technical and economical comparison based on the layout of the water supply system, combined with the urban planning land use. 5.2.2 Safe isolation measures should be taken around the water supply plant. 5.2.3 The plane layout and vertical design of the water supply plant shall meet the requirements of the functions, operation and maintenance of each building (structure), and the main buildings (structures) shall be easily accessible, and safety measures shall be taken. 5.2.4 The fire separation distance for the overall layout of the water supply plant shall comply with the fire protection requirements stipulated by the state, and explosion-proof and pressure relief measures shall be taken for facilities with explosion hazards. 5.3 Treatment process 5.3.1 The treatment process should ensure the safety of the factory water quality. The selection of process should be based on raw water quality, water supply scale, and water quality requirements after treatment, after investigation and research, necessary test verification or reference to existing operating experience under similar conditions, combined with local operating and management conditions, and comprehensively determined through technical and economic comparisons. 5.3.2 When the raw water quality is Class I and Class II in the surface water environmental quality standards stipulated by the state, conventional treatment processes should be given priority; when the raw water quality is Class I and Class II in the groundwater quality standards stipulated by the state, priority should be given to Use filtration and sanitization or only sanitization. 5.3.3 When the quality of raw water cannot reach Class II in the environmental quality standard for surface water, enhanced conventional treatment processes should be adopted, or water plant pretreatment or advanced treatment processes should be added as needed. 5.3.4 Disinfection process must be set up for drinking water treatment, and should meet the requirements of effective disinfection dosage and contact time. 5.3.5 The muddy water, scum, waste water and waste liquid produced during the water treatment process shall be treated and disposed of, and it is strictly prohibited to be directly discharged into the environmental water body. 5.3.6 The sludge discharge water and waste water produced in the water treatment process shall be safe and reliable when reused. During the epidemic period, water plants using raw water from water sources in the affected areas and water plants located in the affected areas shall not reuse the sludge discharge from the sedimentation tank and backwash water from the filter into the treatment process system. 5.3.7 The emergency treatment measures of the treatment process shall comply with the following regulations. 1 It should be based on the possible pollution sources of the water source. Develop appropriate water treatment plans. 2 The factory should have the equipment and facilities for temporary dosing of emergency chemicals, and implement technical training for personnel and relevant material reserves. 5.4 Structures 5.4.1 The water treatment structures should be divided into two or more series or compartments that can operate independently according to the facility scale. 5.4.2 The design parameters of water treatment structures and connecting pipes and channels shall be calculated and checked according to the accident conditions. 5.4.3 All accessible exposed conductive parts on structures containing water and metal pipes entering and leaving the structures shall be equipotentially bonded and reliably grounded. 5.4.4 The full water test must be carried out after the construction of the water-holding structure is completed. 5.5 Pharmacy and equipment 1.Mechanical ventilation equipment with air changes of 8 times/h~12 times/h should be installed. The ventilation system should be equipped with high-level fresh air inlets and low-level indoor air discharge outlets to high outdoors. 2 Ozone leak detectors and alarm facilities should be installed, and the low and high detection limits of the detectors should meet the requirements of safety monitoring. 3 Outdoor switches for indoor lighting and ventilation equipment should be set outside the entrance of the workshop, and protective equipment, rescue facilities and emergency repair toolboxes should be placed. 5.6.11 The ozone tail gas elimination device must be installed in the ozone oxidation system.6 Water supply pump station6.0.1 The scale of the water supply pumping station shall meet the user's requirements for water volume and water pressure. 6.0.2 When an intermediate booster pump station is installed in the water supply network, effective measures shall be taken to ensure that the pressure of the municipal water supply network upstream of the pump station is not lower than the service pressure of the local water supply network. The secondary pressurization facilities shall not affect the normal water supply of the municipal water supply network. 6.0.3 The water supply pump station should be equipped with a backup water pump. 6.0.4 The layout of the water supply pumping stati......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB 55026-2022_English be delivered?Answer: Upon your order, we will start to translate GB 55026-2022_English as soon as possible, and keep you informed of the progress. The lead time is typically 6 ~ 10 working days. The lengthier the document the longer the lead time.Question 2: Can I share the purchased PDF of GB 55026-2022_English with my colleagues?Answer: Yes. The purchased PDF of GB 55026-2022_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.Question 3: Does the price include tax/VAT?Answer: Yes. 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