Ownership of medium-pressure steam pipelines

AQSIQ Document No. 114 of 2014: Pressure pipelines refer to tubular devices that use a certain pressure to transport gases or liquids. They are defined as pipelines with a maximum operating pressure of 0.1 MPa (gauge pressure) or higher, carrying gases, liquefied gases, steam, or liquids that are flammable, explosive, toxic, corrosive, and have a maximum operating temperature equal to or higher than their standard boiling point, and with a nominal diameter of 50 mm or larger. Except for pipes with a nominal diameter of less than 150 mm and a maximum operating pressure of less than 1.6 MPa (gauge pressure), as well as the pipes that form part of the equipment used for transporting non-toxic, non-flammable, and non-corrosive gases. Among them, the safety supervision and management of oil and gas pipelines shall also be carried out in accordance with laws and regulations such as the Work Safety Law and the Oil and Gas Pipeline Protection Law. In accordance with the aforementioned regulations, it is first determined that the said steam pipeline is a pressure pipeline. According to GBT20801: 4.1 Industrial pressure pipelines that meet one of the following conditions are classified as GC1 grade: 4.1.1 Pipelines that transport media with toxicity levels as specified in GB5044 and HG20660, namely: a) Highly hazardous media (except benzene) ； b) Highly hazardous gas media (including benzene) ； c) Highly hazardous liquid media with a working temperature above the standard boiling point. 4.1.2 Pipelines that transport flammable gases of categories A and B as specified in GB50160 and GBJ16, with a design pressure of 4.0 MPa or greater: a) Flammable gases of categories A and B ； b) Class A flammable liquids (including liquefied hydrocarbons). 4.1.3 Pipelines that transport fluid media with a design pressure of 10.0 MPa or higher, as well as pipelines with a design pressure of 4.0 MPa or higher and a design temperature of 400°C or higher. In accordance with the above provisions, the said steam pipeline meets the requirements of 4.1.3; therefore, it is a GC1 class pipeline

4.1.3 Doesn’t seem to be the latest version, right?

Is there a new version of 20801 available? I’m looking at the 2006 one

It is included in the new edition of the training materials for pressure pipeline inspections

Is there a new edition of the textbook on pressure pipelines? I still have the second edition in my hands

What does it say in the third edition? Could you take a screenshot for me? But there’s no updated version for 20801; logically, the classification of pressure pipelines shouldn’t change, right?

I have the print version of the third edition training material for pressure pipeline design approvers, which falls under GC1(3)

20801 is an industrial piping code that applies only to GC-class pipes. The original poster did not specify the location where this pipeline is used (the type of factory), so it is necessary to determine the pipeline type first. If this is a steam pipe in a thermal power plant, it should belong to the GD category.