Building Spherical Tanks with Explosives: Fact or Myth?
Methods of building spherical tanks: pressed petals, hydraulic forming of a polyhedron and explosive forming. Where each method is used and where it is not.
Building a pressure vessel differs from an ordinary storage tank: material traceability, head thickness checks after forming, nozzle reinforcement, PWHT and a hydrotest at 1.3 times.
The hydrotest is a tank's final exam before delivery, and we carry it out in our own factory. The test pressure, the work before filling, and the mistake that can ruin a tank while it is being drained.
