Why hydrogen pipelines should not be laid in ditches
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RT, I just saw the information – why isn’t it allowed? Gas trenches are installed to prevent combustible gases from accumulating at the bottom; it should be impossible for such accumulation to occur there
The heavy fall downward, the light rise upward. It’s mainly because the space for human activities isn’t concentrated, I guess
Does the cable allow air to pass through? Hydrogen still accumulates even in a non-ventilated environment.
The hydrogen explosion range is 4% to 75.6%. Pipelines buried underground can easily experience explosions in the event of a leak. So it’s not allowed to be buried underground.
It’s probably to make inspection easier. Hydrogen leaks are hard to detect, and when they do occur, fires often start; the flames are not visible, and anything nearby in the ditch can catch fire.
A leak can pose significant safety risks.
It is less likely to spread in ditches than on the ground; generally, ditches are more prone to fires, explosions, and poisoning incidents
Combustible gases with a high density tend to accumulate in gutters; as for hydrogen, does it easily accumulate as well?
It doesn’t say it’s not allowed; it only says that measures should be taken to prevent the accumulation of gas. And hydrogen shouldn’t accumulate easily, right? The regulations explicitly state that it’s not allowed, without any additional conditions, so there are doubts