Impact damage test. One or more finished cylinders shall be drop tested at ambient temperature without internal pressurisation or attached valves. The surface onto which the cylinders are dropped shall be a smooth, horizontal concrete pad or flooring. One cylinder shall be dropped in a horizontal position with the bottom 1.8 m above the surface onto which it is dropped. One cylinder shall be dropped vertically on each end at a sufficient height above the floor or pad so that the potential energy is 488 J, but in no case shall the height of the lower end be greater than 1.8 m. One cylinder shall be dropped at a 45 angle onto a dome from a height such that the centre of gravity is at 1.8 m; however, if the lower end is closer to the ground than 0.6 m, the drop angle shall be changed to maintain a minimum height of 0.6 m and a centre of gravity of 1.8 m. Following the drop impact, the cylinders shall be pressure cycled from not more than 2 MPa to not less than 26 MPa bar for 1,000 cycles times the specified service life in years. The cylinders may leak but not rupture, during the cycling. Any cylinders completing the cycling test shall be destroyed;
Impact damage test. One or more finished cylinders shall be subjected to an impact damage test according to Appendix A, paragraph A.20.
