The rupture disc on an oxygen cylinder is designed to burst at approximately which pressure?

The rupture disc on an oxygen cylinder is designed to burst at approximately which pressure?

• A. 3200 psi (100 psi below its tested pressure)
• B. 3500 psi
• C. 3000 psi
• D. 3100 psi

Answer: (A)

Rupture discs are set to fail at a pressure just below the cylinder’s maximum tested pressure so that a safe pressure relief occurs before the cylinder is overstressed. For an oxygen cylinder, the disc is designed to burst around 3200 psi, about 100 psi below the tested pressure. This margin ensures venting happens before the cylinder reaches its limit, preventing a more dangerous failure. A pressure like 3500 psi would be beyond the intended design point and could delay safe venting, while 3000 or 3100 psi would trigger venting earlier than the standard safety setting. So the best-fit answer is around 3200 psi.

Rupture discs are set to fail at a pressure just below the cylinder’s maximum tested pressure so that a safe pressure relief occurs before the cylinder is overstressed. For an oxygen cylinder, the disc is designed to burst around 3200 psi, about 100 psi below the tested pressure. This margin ensures venting happens before the cylinder reaches its limit, preventing a more dangerous failure. A pressure like 3500 psi would be beyond the intended design point and could delay safe venting, while 3000 or 3100 psi would trigger venting earlier than the standard safety setting. So the best-fit answer is around 3200 psi.