Classification of steam pipes
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I would like to ask an expert: for steam pipes in a power plant with a design temperature of 540 degrees Celsius, a pressure of 9.8 MPa, and a diameter of φ89, what qualification is required – GC1 or GC2 – for their installation? Thank you!
Is the medium steam? Is the focus on usage or design? If it’s a design pressure, then GC2 is sufficient.
Medium vapor; all parameters are design parameters. Thank you!
①First, it is necessary to determine whether it belongs to pressure pipelines within the scope of boilers or to industrial pipelines； ②For pressure pipelines that fall within the scope of boilers, the provisions of the boiler regulations apply ； ③If it is an industrial pipeline, a GC1 or GCD qualification is required.
For design pressure, GC2 is enough! At the critical point
Is the critical point you mentioned 10 MPa?
This pipeline is a branch that leads off from the main pipe, used for supplying gas to external facilities. Having the first-class installation and maintenance qualification for boilers allows one to install pipes within the boiler itself, right? What is the specific distance limit in meters? Which regulation does GC1 follow?
When the temperature exceeds 400 degrees, it falls within the category of GC1 grade pipes
Although steam is non-toxic and harmless, when its temperature and pressure exceed certain limits, it is classified as GC1; reference can be made to the Safety Regulations for Pressure Piping – Industrial Piping TSG D0001-2009