Rules and regulations for the transport of bulk cargo by tank trucks
Transporting bulk liquids by road tanker
The booking for a plasticiser delivery says “discharge using the receiver’s pump”. The vehicle arrives on time, and the product is within the manufacturer’s permitted transit temperature range. At that temperature, however, the liquid is too viscous for the plant’s pump. Avoiding a delay means agreeing both the conditions for carriage and the conditions under which the plant can receive the entire batch.
Follow the movement from booking through to signed delivery records below. The companion guide to liquid bulk cargo and its transport options covers product types and equipment selection.
Agreeing the tank with both sites
Start with the consignment details. The consignor supplies the product name and grade, mass, density at a stated temperature, specification and temperature limits. For chemical transport, obtain the current safety data sheet. Section 14 helps establish the transport classification. Where ADR applies, check the tank’s suitability and approval for the substance and the documents required for the movement.
At the same time, the receiver identifies the destination tank, the transfer method and who will supply the pump, hose and adapter. Exchange a coupling designation or drawing. Connections with the same nominal diameter may have different coupling types, seals or working pressure ratings. Put any equipment the carrier is expected to bring on the booking.
The carrier can now confirm the road tanker transport arrangements, including the actual trailer, compartment, shell or lining and seal materials, discharge equipment and available heating. Record the tank identifier. A tractor unit and a tank trailer can be substituted independently, while the cargo history and cleaning record belong to the tank itself.
Reading the previous cargo history
Obtain the last product name for each compartment in use and, if the receiver requires it, the history for its specified period. An entry saying “oil” could refer to edible vegetable oil or an industrial lubricant. A plant may reach very different acceptance decisions for the two. Obtain the full product name and intended use when an entry is ambiguous.
For edible vegetable oil transport, confirm the tank’s food-grade use and the buyer’s previous-cargo criteria. Where those criteria exclude the previous load, a cleaning entry alone does not establish acceptance. Agree a suitable alternative tank. The article on previous cargo compatibility explains the assessment in detail.
Reading a tank cleaning document
When the carrier presents an EFTCO Cleaning Document (ECD), match it to the booking and the equipment at the loading bay. It records the work carried out. The consignor’s and receiver’s product requirements determine whether that work is sufficient for the next load.
ECD box | What to match before loading |
|---|---|
5 · Identification | Match the tank identifier on the record to the tank that has arrived. |
8 · Previous product | For each compartment, match the entry to the cargo history cleared for this product. |
9 · Compartment cleaning | Read the cleaning codes and descriptions. Check that the record covers the compartment assigned to the load. |
10 · Additional work | Look for the pump, outlets and hoses if they were cleaned. Match hose identifiers where recorded. |
Suppose the station recorded cleaning two compartments but the hose is missing from the record. If the plant will use its own hose for discharge, the plant confirms its suitability. If the vehicle’s hose will be used, identify the actual hose and obtain evidence of its preparation. For a moisture-sensitive product, check that any required drying was carried out. This traces the complete product path from compartment to receiving connection. See the guide to road tanker cleaning before loading.
Releasing the tanker for loading
At the loading bay, the operator matches the source tank, product grade, vehicle tank identifier and compartment against the loading plan. Authorised staff inspect accessible fittings and connections under the site procedure. Any sign of leakage, moisture or product residue goes to the person responsible for release. Loading starts once any discrepancy has been resolved and the equipment accepted. Before connection, the driver and operator agree how to secure the vehicle against movement, the protective equipment required for the product, who will monitor transfer and how to signal a stop. Where earthing or vapour return is specified, the site checks those systems before transfer.
For an illustrative batch of 12.6 tonnes at 1.05 t/m³, the product occupies 12 m³. The carrier checks the permitted filling level of the assigned compartment, space for thermal expansion, payload and axle loads. A multi-drop route also requires checking load distribution on the legs after each partial discharge.
For fuel deliveries carrying different grades in neighbouring compartments, the loading plan identifies each outlet and any shared pipework. At dispatch, record the actual quantity, measurement method, batch and compartment, plus any seals required by the plan. These are the figures and identifiers the receiver will check.
Agreeing temperatures for transit and discharge
Ask the supplier to specify the acceptable loading temperature, transit range and pumping conditions separately. For plasticiser transport, the change in viscosity as a particular grade cools matters. The receiver needs to confirm that its pump and transfer line can handle the product at the expected arrival temperature.
Insulation slows heat exchange. A heating circuit allows heat to be supplied if a compatible source is available and the product specification permits the heating method. Where heating is required on the road, the carrier verifies that the actual tanker has a suitable independent system. A jacket that can be connected only at the plant is useful only if the site has the right equipment and has allowed time for heating.
A pumping limit and a quality excursion require different decisions. Suppose the example batch can travel at +23 °C, while the receiver’s pump can handle this grade only from +25 °C. At +23 °C the site needs to agree an approved way to bring the product to its pumping condition or use other compatible equipment. These figures are illustrative. If the record instead shows that the product went outside its permitted quality limits, refer acceptance to the quality representative. This matters particularly for latex and water-based dispersion transport. A return to the specified temperature does not by itself establish the condition of the batch.
Record the time, measurement point and what the sensor measures. Product, outer shell and heating-medium temperatures describe different physical conditions. If readings disagree, repeat the measurement by the agreed method and retain both records. Any heating or change of setting must remain within the product specification.
Deciding whether the site can receive the load
Before connection, the receiver verifies the batch, compartment and seals, then identifies the receiving tank and its inlet. The operator confirms the available receiving capacity, taking account of the current level and the tank’s working fill limit. If a seal number differs from the dispatch record, document both numbers before breaking the seal and refer the decision to the person authorised to accept the delivery.
If the batch occupies 12 m³ and the operator confirms only 11.5 m³ of available capacity, hold full discharge into that tank. An alternative tank requires a fresh check of product suitability, transfer line and capacity. For partial receipt, agree the accepted quantity, how the remainder will be recorded and how the vehicle will continue its journey.
Monitoring discharge and reconciling delivery figures
Before discharge, the driver and site operator agree who controls the pump, who monitors the receiving tank level and how either can stop the transfer. The method depends on the product, the height difference and both installations. Gravity discharge requires a suitable layout and sufficient flow. Pump transfer requires compatible pump and hose materials and operating ratings. Pressure discharge may be used only under a procedure approved for the complete installation. The guide to road tanker discharge equipment covers the different arrangements.
A leak, high-level alarm or loss of communication between operators calls for transfer to be stopped under the site procedure. The authorised person releases the operation for restart after the cause has been established and resolved. Record any change of connection, partial delivery or change of receiving tank alongside the actual quantity.
A delivery reconciliation. The dispatch record shows 12,600 kg. The receiver’s meter registers 11.90 m³. At an agreed density of 1.05 t/m³ for that temperature, the calculated mass is 12,495 kg, a difference of 105 kg. Check the opening and closing meter readings, temperature and volume reference conditions, the method used to determine dispatch mass, and any product left in the compartment or transfer line. Both parties record their measurements and observations on the delivery paperwork so the difference can be investigated.
Short trip checklist
☐ The booking specifies the grade, quantity, temperature limits, measurement method and discharge arrangements.
☐ The actual tank and compartment match the booking. Their cargo history meets the receiver’s criteria.
☐ The compartment, pump and assigned hose meet the preparation requirements. The site has released the tank for loading.
☐ The batch, dispatch quantity, required seals and temperature readings are recorded.
☐ The receiving tank, available space, transfer line and personnel responsible for transfer and stopping it are confirmed.
☐ The delivery record includes quantity accepted, any remainder, measurement method and both parties’ observations.
To arrange bulk liquid transport for a particular movement, send the product specification and both sites’ requirements to Save Pro Solutions. This allows the vehicle and discharge arrangements to be agreed before dispatch.
