Standards

CJ/T 553-2024 The encoding rules for a unified identification code for urban digital public infrastructure

Publish Date: 2024-04-15

CJ/T 221-2023 CJ/T 221-2023 Urban Sludge Standard Test Methods for Inspection and Analysis

Publish Date: 2023-12-26

CJ/T 546-2023 Powdered activated carbon for flue gas purification in municipal solid waste incineration

Publish Date: 2023-09-22

CJ/T 548-2023 Urban Management Enforcement Uniform Clothing and Accessories

Publish Date: 2023-09-22

CJ/T 549-2023 Urban management law enforcement uniform hat

Publish Date: 2023-09-22

CJ/T 547-2023 CJ/T 547-2023 Urban Management Enforcement Uniform Clothing Standard

Publish Date: 2023-09-22

CJ/T 550-2023 Urban management law enforcement uniform and shoes

Publish Date: 2023-09-22

CJ/T 551-2023 Urban Operations Management Service Platform Management Supervision Indicators and Evaluation Standards

Publish Date: 2023-07-19

CJ/T 552-2023 Urban Operations Management Service Platform operational monitoring indicators and evaluation criteria

Publish Date: 2023-07-19

CJJ/T 313-2022 Standard for occupational skills of urban drainage & sewage treatment industry

In order to strengthen the team-building of urban drainage industry practitioners; promote the implementation of the vocational training system; standardize vocational skills standards and training assessments; and formulate this standard. This standard applies to the training and assessment of nine occupational skills in the urban drainage industry, including drainage pipe workers, drainage inspectors, drainage pump station operators, urban wastewater treatment workers, sludge treatment workers, drainage dispatchers, drainage customer service staff, drainage laboratory technicians, and drainage instrumentation workers. The professional skills of urban drainage industry practitioners, in addition to meeting the requirements of this standard, shall also comply with the provisions of the relevant national standards currently in force.

Publish Date: 2022-04-29

CJJ/T 314-2022 Design standard of urban rapid rail transit

This standard is formulated to ensure that the design of urban rapid rail transit meets the goals of safety and reliability, advanced technology, perfect functionality, economic feasibility, efficient operation, and energy conservation and environmental protection. This standard applies to the design of new, modified, or expanded urban rapid rail transit systems serving medium- and long-distance passenger traffic within urban areas, with a maximum operating speed of 120 km/h to 160 km/h and using a steel wheel-steel rail system. In addition to complying with this standard, the design of urban rapid rail transit should also comply with the provisions of the relevant national standards currently in force.

Publish Date: 2022-04-29

CJJ/T 34-2022 Design standard for urban heating network

1.0.1 In order to save energy, protect the environment, develop China's urban central heating industry, and improve the design level of central heating projects to ensure they are technologically advanced, economically reasonable, and safe and practical, this standard is formulated. 1.0.2 This standard applies to the design of new, expanded, or renovated urban heating networks where the design pressure is less than or equal to 2.5 MPa, the design temperature of hot water is less than or equal to 200°C, and the design temperature of steam is less than or equal to 350°C from the heat source outlet to the building heat inlet. 1.0.3 The design of urban heating networks should comply with the requirements of urban planning and township planning, and should be in harmony with the environment. 1.0.4 When designing urban heating networks in areas such as earthquake zones, collapsible loess, expansive soils, and saline soils, in addition to meeting the requirements of this standard, they should also comply with the current national standards: *Seismic Design Code for Outdoor Water Supply, Drainage, and Gas and Heat Engineering* GB 50032, *Building Standards for Collapsible Loess Areas* GB 50025, *Technical Code for Buildings in Expansive Soil Areas* GB 50112, and *Technical Code for Buildings in Saline Soil Areas* GB/T 50942. 1.0.5 The design of urban heating networks should also comply with the provisions of relevant current national standards in addition to meeting the requirements of this standard.

Publish Date: 2022-04-29