We assume the vessel walls are composed of a titanium alloy (Ti-6Al-4V) commonly used for aerospace applications with yield strength σ y = 8250.0 [bar] and density ρ v = 4429 kg/m 3 . N.b. mechanical properties of alloys could depend on whether they are under uniaxial or biaxial stress . We use a safety factor β = 0.5 as in Ref. .