First, NS pipeline was not active. The Germans stopped it with the invasion. Wikipedia confirms. If you look at the Dutch video, if it’s methane, there should be a visual change over the leak, diffraction. Pardon my grammar.
The images are showing air bubbles. Likely enriched N2, for corrosion purposes. That’s how I would design it.
First, NS pipeline was not active. The Germans stopped it with the invasion. Wikipedia confirms. If you look at the Dutch video, if it’s methane, there should be a visual change over the leak, diffraction. Pardon my grammar.
The images are showing air bubbles. Likely enriched N2, for corrosion purposes. That’s how I would design it.
Prove me wrong.