I would like to ask about the classification categories of two natural gas pipelines
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There are two natural gas pipelines, with the following details: 1. A gas pipeline in an industrial park of a certain city, with a length of 20 km and a design pressure of 4.0 MPa. It starts at the gas transmission station in a gas field and ends at the gate station in the industrial park; from there, the natural gas is delivered to industrial users within the park. Does this pipeline fall under category GA2 or GB1? 2. An industrial user needs to use boilers, and it obtains gas from a connection point on the pipeline owned by a city gas company, located not far from the factory entrance. The gas is then transported inside the factory to be used by the boilers. The design pressure is 1.6 MPa, and the length of the pipeline is 0.6 km. This pipeline does not belong to either the city gas company or the factory itself; rather, it is constructed and managed by a third-party gas company. What category does this pipeline belong to?
1. There is GA and GB; there may also be GC； 2. There is GB; there may be GC.
Emergency shut-off valves must be installed on both the main pipe and the branch pipes, and the main pipe also requires emergency shut-off valves to be installed at various sections.
1. The gas pipeline in an industrial park in a certain city is 20 km long, with a design pressure of 4.0 MPa. It starts at the gas transmission station in a gas field and ends at the gate station of the industrial park; this section should be classified as GA； After being connected to the gas supply, this station delivers natural gas to the industrial users within the park; the distance from here to the boundary line (or fence) of those industrial users is GB, while the distance from the boundary line (or fence) to the medium-pressure pressure regulation box is GC ； 2. A certain industrial customer needs to use a boiler and obtains gas from a connection point on the pipeline of a city gas company located outside the factory (not far from the factory gate). The gas is then delivered into the factory area for use by the boiler. The design pressure is 1.6 MPa, and the length of the pipeline is 0.6 km. This pipeline does not belong to either the city gas company or the factory; rather, it is constructed and managed by a third-party gas company. What category does this pipeline fall under? Same answer as 1. Do you understand?
1. Outside the industrial park, GA. Within the park, GB. 2. Outside the boundary zone, GC. Within the boundary area, GCD.
There is a question: The pipelines within the industrial park fall under the GB category, but GB refers to utility pipelines – namely gas or heat pipelines used for public services or domestic purposes within cities or towns. Since the users in this industrial park are all industrial users, and such use does not fall under public services or domestic purposes, do they still belong to the GB category?
If the end use is of a public nature, it can also be classified as a GB pipeline
The end use is to produce commercial glass bottles, ceramic products, etc., which are commercial goods