Liner
burst test
• Required by HSE, TUV and CEN.
• Liner is pressurized with water until failure
•
Must remain in one piece
Hydraulic burst test
• European designs require minimum burst pressure
3 x service pressure.
• DOT (USA) designs require minimum burst pressure
3.33 x service pressure.
• Typical burst pressure:
• 850 bar for 207 bar design.
• 1100 bar for 300 bar design.
Ambient cycle test
• European standards require a minimum of 3,750 cycles minimum
to test pressure.
• DOT (USA) requires 10,000 cycles to service and 30 to test
pressure.
Environmental Cycle Test
• Required by both US and European standards.
• 5000 cycles to service pressure at 60°C and 95% humidity.
5000 cycles to service pressure at -50°C.
• 30 cycles to test pressure at room temperature.
• Burst test.
High velocity impact test
• To show behavior if cylinder is punctured when charged.
Fill cylinder to charging pressure.
• Shoot with 7.62-mm bullet from not more than 45 m.
• No fragmentation permitted.
Bonfire test
• Fill two cylinders to charging pressure.
• Fit with a pressure relief. Place in bonfire until
completely
vented.
• Cylinder shall not rupture during test.
• Burst for information.
• Typical: Cylinder remains intact.
• Burst pressure from 600 to 1,000 bar depending on
orientation in fire
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