At all times the local health and safety rules and regulations must be complied with.

The Risk of leakage is extremely small provided that the tanks are operated correctly.

  1. The vast majority of tank containers are manufactured from stainless steel which is a highly ductile material that will withstand very high forces. The stainless steel will deform to a very high degree before the pressure vessel is breached.
  2. Tanks for the carriage of hazardous products, that have closures below the liquid level, have a minimum of two closures for low hazard products and three closures for high hazard products. One of the closures are internal to the pressure vessel itself and therefore any damage to the external valves will not cause the product to leak.

Transportation and Handling

  1. Tanks for carriage of liquid hazardous materials must be filled to the levels defined in the regulations. Tanks are permitted to be filled up to 20% of their capacity or greater than 80% of their capacity, to a permitted maximum.  It is essential that these filling levels are adhered to irrespective of the cargo carried to avoid the free surface effect, which in  extreme circumstances, will lead to the overturn of the transport vehicle.
  2. The vast majority of tanks are fitted with ISO standard twist locks. Only approved ISO handling equipment should be used for handling and securing the tanks to chassis rail cars, ships etc

Empty and Uncleaned Tanks

  1. Empty and uncleaned tanks must be treated as if they were loaded with the last product
  2. A full MSDS sheet must be available for the cleaning station prior to cleaning.

Entry in Tanks

  1. Entry in to tank containers should only be undertaken by trained personnel.
  2. Tanks should only be entered if they have a valid cleaning certificate.
  3. Before entry into tanks the atmosphere monitoring should be undertaken to ensure that the atmosphere will sustain life.


  1. Tank containers for the transportation of hazardous goods are manufactured to international standards irrespective of where they are made.
  2. Each individual tank design has to pass a series of structural tests before it is approved for manufacture.
  3. During manufactured each individual tank is tested to ensure it conforms to the requirements of the design approval.


Technical Guidelines
Technical Guidance for Shipping Bulk Liquids
Tank Cleaning