Low pressure rail is less than

Low pressure rail is less than

• A. 100 Psi
• B. 25 Psi
• C. 10 Psi
• D. 75 Psi

Answer: (B)

Low-pressure rail cars are built for liquids at relatively modest pressures, and the category is defined by the maximum allowable working pressure. In hazmat transportation, a low-pressure cargo tank has a MAWP of 25 psi or less, while high-pressure tanks start at 100 psi or more. So the boundary value that designates the low-pressure category is 25 psi: anything rated above that would be considered high pressure. The other numbers don’t define the category—75 and 100 psi are above the low-pressure limit, and 10 psi is simply a lower value within the low-pressure range but not the cutoff that distinguishes the category.

Low-pressure rail cars are built for liquids at relatively modest pressures, and the category is defined by the maximum allowable working pressure. In hazmat transportation, a low-pressure cargo tank has a MAWP of 25 psi or less, while high-pressure tanks start at 100 psi or more. So the boundary value that designates the low-pressure category is 25 psi: anything rated above that would be considered high pressure. The other numbers don’t define the category—75 and 100 psi are above the low-pressure limit, and 10 psi is simply a lower value within the low-pressure range but not the cutoff that distinguishes the category.