What is the relationship between the acute toxicity and extreme hazard of the gc1 pipeline, and its high hazard?
Thread Content
This post was last edited by su*ubin on 2019-12-3 at 11:20. Under the new pressure pipeline classification GC1(1), classification is based on Categories I and II of acute toxicity as listed in the hazardous chemicals catalog. How does this differ from the previous classifications of extremely hazardous and highly hazardous? It’s in chaos
What’s the problem? It’s all in the past now; just follow the new rules. Only acute toxicity is considered, rather than the toxicity level. Uses and basis for the classification of medium toxicity
I’m afraid it’s not that simple; inertia is very strong. If it was classified as GC1 before, then under the new rules it won’t be classified as GC1, and it’s likely still necessary to treat it as GC1
Indeed. With the new regulations in place, GC3 is unable to submit a construction notification, and therefore cannot entrust supervision and inspection. However, once the GC3 pipeline is completed, the owner must use the inspection report to proceed with registration.
I suggest you get in touch with the testing laboratory; they are well-versed in the new regulations, so you can discuss things with them
Toxicity and hazard are different concepts
The problem is that only the definition of pressure pipelines has been changed; other relevant documents still use the terms \"extremely hazardous\" and \"highly hazardous\", which really makes things confusing: L
Once the corresponding relationships between the standards that are currently in effect are clarified, everything will become much clearer: The classification of pressure pipelines is determined based on factors such as the toxicity of the medium, in accordance with the \"Catalogue of Hazardous Chemicals (2015 edition)\". The classification of pressure vessels is determined based on factors such as the toxicity of the medium, in accordance with the standard \"Classification of Toxicity Hazards and Explosion Risks of Chemical Media in Pressure Vessels HG 20660-2000\". Other standards such as GBZ 230-2010, GBZ 2.1-2007, and HG/T 20660-2017 should be treated as general reference materials for now*, or used only when no suitable medium can be found in the aforementioned two standards.
The classification of pressure pipelines can be reclassified in accordance with the latest 2019 edition of the \"Catalogue of Licenses for Special Equipment Manufacturing Units\". :)
It should be noted that media with extreme hazards are not necessarily classified as acute toxicity category 1; for example, CO is a highly hazardous medium that, according to previous definitions, was classified as GC1. However, under the new classification system for pressure pipelines, CO is classified as acute toxicity category 3 and should now be classified as GC2