I would like to ask which standards apply to natural gas pipelines within factory premises?

Gas pipelines installed within factory premises are usually divided into two categories: utility pipelines and industrial pipelines. 1. **Standards and distinctions**: - **GB public pipelines** (**standards**) mainly refer to public gas supply systems, including municipal gas networks. - **GC industrial pipelines** refer specifically to the piping systems used within industrial facilities, and these pipes are primarily used to support industrial production processes. 2. **Burial or not**: - According to the \"Code for Design of Urban Gas Systems\" (GB 50028), natural gas pipelines connected to the municipal supply can generally be installed underground, which helps to protect them from external interference. - However, for combustible gas pipelines used in industrial applications, according to the \"Code for Construction of Industrial Metal Piping Projects\" (GB 50160), burial is generally not recommended to meet safety requirements such as ease of maintenance and detection of leaks. 3. **Standards for pipes for different purposes**: - Within a factory, natural gas pipes used for different purposes (such as those leading to production areas and canteens) may all be considered industrial pipes, but their design and usage standards can vary. For example, pipes used in canteens may place more emphasis on safety and cleanliness, while pipes in production workshops may focus more on heat resistance and pressure resistance. In practical applications, the specific route and installation method of the pipes usually need to be determined based on the specific uses, safety requirements, and ease of maintenance. It is recommended to consult professional gas engineers or relevant standard experts in detail during the design process to ensure compliance with all applicable specifications and safety requirements. At the same time, it is also advisable to consult with the local gas regulatory authorities to ensure that all designs comply with the latest regulations and safety standards. .

This post was last edited by yinyayinke on 2024-4-29 at 10:17. 1. Pipelines within industrial users’ facilities (your factory), if they meet the criteria for pressure pipelines, are classified as industrial pipelines among pressure pipelines. 2. For the design and installation of pipelines, please refer to GBT20801, TSG D0001-2009, and other **industry standards. 3. Pipes indoors should not be buried underground, but there is no explicit prohibition for those outdoors. Of course, to determine whether burial is possible, it is advisable to consult the design agency as well as the local emergency management and market supervision authorities. Personal opinion, for reference only.

The gas pipelines within the factory area are subject to industrial pipeline standards; they can also be laid underground, except when the carbon monoxide content exceeds 10%, in which case burial is not allowed.

This post was last edited by ppipe on 2024-4-26 22:22. After municipal gas is connected to a factory, does the natural gas inside the factory fall under GC industrial pipelines or GB public pipelines? According to 50028, gas pipelines can be buried underground ； However, from the perspective of industrial piping, combustible gas pipelines cannot be buried. From this perspective, which standards should natural gas pipelines follow, and can they be buried? Are the natural gas pipelines in a factory that lead to the production workshops and the cafeteria designed according to uniform standards, or are there differences? According to the national guidelines for pressure pipelines, such as \"Design of Pressure Pipelines in Petrochemical Industries: Engineering Examples\" and \"Tutorial and Engineering Examples for Personnel Responsible for the Approval of Pressure Pipeline Designs\", do the natural gas pipelines within a factory that lead to the cafeteria and boiler room fall under industrial pipelines (GC) or municipal gas pipelines (GB)? Pressure pipelines are classified into GA (long-distance pipelines), GB (utility pipelines), and GC (industrial pipelines). Do the natural gas pipelines in the factory that lead to the cafeteria and boiler room fall under industrial pipelines (GC) or municipal gas pipelines (GB)? Many design firms classify the natural gas pipelines within the factory that lead to the cafeteria and boiler room as urban gas pipelines (GB1). This is because these areas are special: the cafeterias and boiler rooms within the factory are zones with high concentrations of employees, and therefore the gas pipelines must be designed in accordance with GB1 standards for public pipelines. The gas used in the cafeterias and boilers within the factory is not intended for production or processing purposes; such pipelines must be designed, constructed, and inspected in compliance with the latest 2021 edition of the standards, as public pipelines (GB pipelines), and cannot be treated as industrial GC pipelines. Gas is used for things such as boilers in the canteens within the factory premises; although these are located inside the factory, they are used for the living needs of residents (employees), and thus fall under the jurisdiction of public gas pipelines. This has nothing to do with whether there are fences around the factory. Under no circumstances should one attempt to operate it secretly using industrial GC pipes in order to save costs. Areas such as the canteens and boilers within the factory complex fall under the pre-factory zone, which are densely populated areas. The gas used in these canteens and boilers must be treated with odorization in accordance with public GB gas pipeline standards and equipped with pressure regulation units in order to be used safely for the domestic needs of employees and residents. Under no circumstances should one opt for cost and convenience savings by designing it incorrectly in accordance with industrial pipeline standards, as liability will be pursued for life in the event of an accident. The steel pipes buried directly from the natural gas pipelines in the factory to the cafeteria and boiler room must be subjected to cathodic protection, and they should generally be laid underground. If the design pressure is low, plastic pipes can also be laid directly buried. Therefore: once municipal gas is connected to the factory and used in the cafeteria, it is for domestic purposes rather than industrial use, and it still falls under the supervision of the municipal safety supervision agency. The gas used for civilian purposes in the factory canteens can be classified either as GC industrial pipelines or GB municipal pipelines; however, it must comply with GB50028 standards. It is generally required to be laid underground rather than overhead, as laying it overhead poses risks while underground laying is safer. The steel pipes buried directly from the natural gas pipelines in the factory to the cafeteria and boiler room must be subjected to cathodic protection, and they should generally be laid underground. If the design pressure is low, plastic pipes can also be laid directly buried. Laying in trenches is equivalent to direct burial.

Why are the specification requirements for burying 50028 and 55009? Could you elaborate on that? What are the differences between GB’s pipeline design requirements and those of GC2? Could you explain them?

Which standard specifies this clause?

You can understand it by using the definitions of public pipelines and industrial pipelines; anything that enters the factory area falls under industrial pipelines :)

For those entering the plant area: designed and constructed in accordance with utility pipeline standards. But management is generally done according to industrial pipelines