How to choose the pipeline material for pipelines containing small amounts of highly hazardous gas mixtures
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The flammable and explosive gas mixture contains a highly hazardous substance at a concentration of 0.3%. Can pipe model 8163 be used? How can we determine it?
It can be simply analyzed based on the textbook for pressure pipeline approvers, page 51: if the level of high hazard is less than 0.5%, it can be considered a non-toxic medium; this is an estimation； If it needs to be precise, please calculate it using the formula on page 50. Therefore, in terms of toxicity, it should be non-toxic. Whether GB8163 can be used depends on the pressure of the gas mixture, which should be less than 4.0 MPA
Thank you, the pressure is less than 4.0 MPa
First, analyze and assess the degree of harm! Select again according to the standards! It must not be below the standard requirements! Don’t suffer losses that outweigh the benefits!
What standards should be referred to when selecting the specifications for mixed gas pipelines? Flammable and explosive gases contain about 0.3% ethylene gas at pressures below 1.0 MPa. . Should we choose the 8163 pipeline?
Less than 4.0 MPa falls under GC2; 8163 can be used in this case. Above 4.0 MPa it belongs to GC1, and 8163 cannot be used for GC1 according to GB20801