Which designation is used for a low-pressure chemical carrier?

Which designation is used for a low-pressure chemical carrier?

• A. MC 307/DOT 407
• B. MC 306/DOT 406
• C. MC 338
• D. MC 331

Answer: (A)

The test is asking you to identify the designation used for a tank designed to carry liquids at low internal pressure. That label is MC-307/DOT-407. These tanks are built specifically for low-pressure chemical shipments, meaning the cargo tank is designed to hold liquids without applying high pressure inside the shell. This distinguishes them from other tanker types that are built for higher pressures or different conditions. Another way to see it: the other designations refer to different kinds of tank configurations and service conditions. MC-306/DOT-406 are for other non-pressurized liquid shipments, MC-331 is used for high-capacity pressurized/liquefied gases such as propane, and MC-338 is for cryogenic liquids at very low temperatures.

The test is asking you to identify the designation used for a tank designed to carry liquids at low internal pressure. That label is MC-307/DOT-407. These tanks are built specifically for low-pressure chemical shipments, meaning the cargo tank is designed to hold liquids without applying high pressure inside the shell. This distinguishes them from other tanker types that are built for higher pressures or different conditions.

Another way to see it: the other designations refer to different kinds of tank configurations and service conditions. MC-306/DOT-406 are for other non-pressurized liquid shipments, MC-331 is used for high-capacity pressurized/liquefied gases such as propane, and MC-338 is for cryogenic liquids at very low temperatures.