New classification of industrial pipeline grades
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The Announcement of the State Administration for Market Regulation on Matters Concerning Administrative Licenses for Special Equipment (No. 3, 2019) classifies industrial pipelines as follows: GC1 grade: 1. Process pipelines that transport media with an acute toxicity level of Category 1 as specified in the Catalogue of Hazardous Chemicals, gas media with acute toxicity of Category 2, and liquid media with acute toxicity of Category 2 whose operating temperature is higher than their standard boiling point；
This is the **new category for pressure pipelines established by the General Administration of Quality Supervision, Inspection and Quarantine; GC3 has been removed and the categories have been simplified.
The picture is good – it’s intuitive and clear!
Industrial pipelines should be met first before determining whether it belongs to GC1.
I would like to ask: among various media, which ones show significant differences in terms of acute toxicity classification, compared to the previous approach that mainly focused on acute toxicity and the maximum allowable concentration?