In the main assembly workshop are made tests for strength and leakage of the fuel tanks of launch vehicles “Zenit”, “Taurus-II”, “Cyclone-4”.
Strength tests are carried out with compressed air by using special pneumatic panels in armored boxes size of 30 × 11 m, strength characteristics of the box P.V = 2160000kgs/sm2 × l.
Strength of the fuel tanks is tested by hydraulic pressure on the hydraulic stand using corrosion-resistant solution in a vertical position.
The fuel tank containment is tested by the following methods:
- accumulation of air-helium mixture using devices such as mobile leak detector for permissible leakage of 1 × 10-7m3 × Pa/s;
- vacuumization of air-helium mixture in a vacuum chamber with a diameter 6.3 m and length of 25m. Strength characteristic PV = n × 750000kgs/sm2 allowable leakage at 1 × 10-7m3 × Pa / s.
Purity requirements for fuel tanks internal cavities with installed structural elements meet special technology of blasting mechanical impurities for internal cavities of nodes (chips, metal dust and other foreign particles) by the corrosion solution hydraulic stand.