How is the leakage level of gas pipelines determined, and what constitutes compliance? ? ?
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Recently, I encountered a natural gas pipeline at work. After purging the pipeline with water pressure to ensure its airtightness, it was found that the pipeline could not retain pressure; the pressure dropped rapidly after being subjected to pressure tests. What is the acceptable leakage level for natural gas pipelines, and what criteria must be met for a pipeline to be considered qualified? The pressure in question is quite low, only 8 kilograms.
I don’t know about this. Ask someone from the pipeline industry.
Natural gas pipeline leaks are classified according to pressure levels: 1 Vacuum pipes (0 MPa), 2 Low-pressure leaks (0–1.6 MPa), 3 Medium-pressure leaks (1.6–10 MPa), 4 High-pressure leaks (10–100 MPa), 5 Ultra-high-pressure leaks (above 100 MPa)
If there are leaks, go and look for them; find them and fix them, then conduct a pressure test again...