Looks to be 100 percent frost covered. Venting from the top and bottom. Big question is whether they push it to failure today to see what pressures the new tank can sustain.
Thatís the goal. There a few known weak points on this test tank, probably capable of more pressure. The second test tank to follow shortly has addressed the weak points.
Will this tank be tested to destruction?
Tank didnít burst, but leaked at 7.6 bar. This is a good result & supports idea of 304L stainless being better than 301. Weíre developing our own alloy to take this even further. Leak before burst is highly desirable. ó Elon Musk (@elonmusk) June 15, 2020