Intermodal Tanks

An intermodal tank is a tank container that can be transported by different modes (usually vessels, trains, and trucks). Most are built as a cylindrical tank (or set of pressure cylinders) within a metal support frame (usually 20 feet long, 8 feet wide, and 8.5 feet tall).

Intermodal tanks carry liquids or—less often—liquefied gases. To identify the tank's contents, check for a stenciled name, placards, or printed documentation. More tips on where to look for identifying informationMore tips on where to look for identifying information

To identify the contents of an intermodal tank, check for:

  • Stenciled name. The shipping nameOr 'proper shipping name'. Either: (a) the specific name of a hazardous material that is frequently shipped (e.g., 'Ammonia, anhydrous'), or (b) the generic name for a less frequently shipped hazardous material, which categorizes the material by its family, its use, or a key characteristic (e.g., 'Acids, n.o.s.' or 'Flammable solids, n.o.s.'). of the hazardous material may be stenciled on the tank.
  • Placards. DOT placards on the tank indicate the substance's main hazard and may also display the UN/NA numberUnited Nations-North American number. (Also UN number or DOT number.) Four-digit number identifying an individual chemical or group of chemicals with similar characteristics. Required on shipping papers; often shown on placards. The four-digit number is often preceded by UN (such as UN1219).. Look for identical, diamond-shaped placards on the front, rear, and both sides of the tank. Sometimes the UN/NA number is included on the placard (or on an orange panel just below it). However, note that placards may be missing, and tanks may be incorrectly placarded.
    At left, a sample DOT placard for isopropanol, where the placard indicates that the substance is in hazard class 3 (flammable and combustible liquids) and the UN/NA number (1219) has also been added to the placard. At right, the placard is shown without a UN/NA number. In such cases, the UN/NA number may be identified in an orange panel near the placard.
  • Hazard identification panel. Some intermodal tanks are placarded with an orange hazard identification panel displaying an international hazard identification code along with the UN/NA number for the tank contents.
    A sample intermodal tank placard, with a 33 in the international hazard identification code section (top) and a 1203 in the UN/NA number section (bottom).
  • Document tube. This tube may be mounted on the frame near the dataplate. It may contain documentation for the transported substance. Look for the substance's name and identification numbers in the documents in the tube.Ìý
  • Shipping papers or cargo manifest. Look for these documents for the vessel or vehicle carrying the intermodal tank; the documents should list the UN/NA number and name for each hazardous material. (Where can I find shipping papers or cargo manifests?)ÌýOn shipping papers or cargo manifestsDocument describing the contents of a shipment., look for theÌý UN/NA number and shipping name for each hazardous material. Below is an example of how these identifiersNames, identification numbers, and other information used to identify a chemical. might be shown on a shipping paper. The shipping papers also show each substance's hazard class or division number (shown below afterÌýthe shipping name), which indicates its hazards.
    A sample excerpt from a shipping paper, showing how the UN/NA numbers and shipping names might appear.
Note: Multiple substances sometimes share the same UN/NA number. To be sure of a chemical identification, look for other identifiers, such as the shipping name (shown on shipping papers, cargo manifests, and container tags and labels).
Note: Shipping documents, labels, and placards sometimes contain errors. Chemical names are often misspelled on shipping documents, and a small error of a letter or two can make a big difference.ÌýUse as many information sources as you can to identify the tank's contents.Ìý

Once you haveÌýfound identifiers for the chemical, you can look up its datasheet in CAMEO 365betÓéÀÖ.

Click on the link below each picture to see a description of that type of intermodal tank and its possible contents.

Drawing of an intermodal IM-101 or IM-102 tank.

IM-101 and IM-102 Intermodal Tanks (equivalent to IMO Types 1 and 2)IM-101 and IM-102 Intermodal Tanks (equivalent to IMO Types 1 and 2)

IM-101 and 102 tanks are similar in appearance. Check the nameplate to see tank type.

IM-101 Intermodal Tank (equivalent to IMO Type 1)

  • Transports both hazardous and nonhazardous liquids and solids. May contain toxicPoisonous; can injure or kill people or other organisms., corrosiveLiquid or solid that can destroy human skin or lung tissue or corrode metals., or flammableEasy to ignite and burns readily. materials with flash pointsThe lowest temperature at which a liquid gives off enough vapor to be ignited at its surface.Ìýbelow 32°F.
  • Classified as nonpressurized, but can have a working pressure up to 100 psigPounds per square inch gauge; pressure relative to atmospheric pressure..
  • Capacity ranges from 5,000 to 6,300 gallons.
  • Commonest type of intermodal tank container.

IM-102 Intermodal Tank (equivalent to IMO Type 2)

  • Transports both hazardous and nonhazardous liquids and solids. Most likely to contain non-regulated materials such as food-grade commodities, but may contain alcohols, some corrosives, pesticides, resinsNaturally-occurring essential oils that are water-insoluble and extracted from natural sources (such as trees and shrubs). Also, synthetic polymers (such as polystyrene or polyethylene), even though such materials are not complex mixtures of compounds like other resins, but instead are long, complex polymers., solventsA solute is a gas, liquid, or solid substance that is uniformly dispersed in a liquid solvent substance, forming a solution. The solvent molecules act to break the solute molecules' attraction for one another, and also the solvent's natural structure. For instance, water is a highly-structured substance, in the absence of any solutes., and flammable materials with flash points between 32°F and 140°F.
  • Classified as nonpressurized, but can have a working pressure up to 25.4 psig.
  • Capacity ranges from 5,000 to 6,300 gallons.

Drawing of an intermodal Specification 51 tank.

Spec 51 (DOT Specification 51 or IMO Type 5)Spec 51 (DOT Specification 51 or IMO Type 5)

  • Typically contains gases liquefied by pressure, such as LPGLiquefied petroleum gas. and ammonia. May also contain high vapor pressureA measure of a substance's tendency to evaporate; liquids with higher vapor pressures evaporate faster. liquids (such as motor fuel antiknock compounds) and pyrophoricAny substance that ignites in the presence of air at or below ambient temperatures. Many pyrophoric materials react with moisture in the air to generate flammable hydrogen gas and enough heat to ignite the hydrogen. These are extremely dangerous fire hazards that are generally stored under an inert atmosphere or in a solvent (such as ether or kerosene) that excludes air. liquids (such as aluminum alkyls).
  • Classified as pressurized. Working pressure may range from 100 to 500 psigPounds per square inch gauge; pressure relative to atmospheric pressure..
  • A nameplate must be fixed to each end of the tank. It lists DOTU.S. Department of Transportation (www.transportation.gov). specification number (Spec 51), manufacturer's name and serial number, capacity, weight, and design pressure.
  • Tank capacity can range from 50 to 5,500 gallons, and tank dimensions may vary.
  • Less common than IM-101 and IM-102 tanks.

Drawing of an intermodal cryogenic tank.

Cryogenic Tank Container (or IMO Type 7)Cryogenic Tank Container (or IMO Type 7)

  • Transports gases liquefied by refrigeration, such as argon, oxygen, and helium (these gases are also called cryogenicVery low temperature. gases).

Drawing of an intermodal tube module.

Tube ModuleTube Module

  • Transports gases in high-pressure cylinders tested to 3,000 or 5,000 psiPounds per square inch; a unit of pressure measurement.Ìý(such as oxygen, nitrogen, helium, and hydrogen).