The design pressure of an IM 101 portable tank is in which range?

• A. 25.4 to 100 psi
• B. 14.5 to 25.4 psi
• C. 100 to 500 psi
• D. 6.89 to 14.5 psi

Answer: (A)

Design pressure is the maximum internal pressure the container is engineered to safely withstand during operation and testing. For IM 101 portable tanks, that rating is set between 25.4 psi and 100 psi. This isn’t the pressure you actually fill to; it’s the safety limit tied to the tank’s construction and certification. Keeping within this range ensures the tank can handle typical contents and conditions with an appropriate safety margin. Pressures well below this range aren’t up to the IM 101 spec, while pressures much higher would require a different, higher‑pressure design. So the designated design pressure range is 25.4 to 100 psi.