Vehicles used to carry large quantities of dangerous goods, such as petroleum products and chemicals, must meet the requirements of the European Agreement on the Carriage of Dangerous Goods by Road (ADR). Certain petroleum road fuel tankers have been found not to be fully compliant with the provisions of Chapter 6.8 of ADR. Amongst other things, these tanks were seen to exhibit extensive ‘lack of fusion’ indications in the circumferential welds. Following an initial technical assessment of the circumferential welds, which showed that the welds might rupture under rollover and ADR load conditions, the Department for Transport (DfT) commissioned further research to assess the safety of these non-compliant tankers. The researchers were also tasked to explore any opportunities arising for better regulation which could improve both the safety and efficiency of all petroleum road fuel tankers. The research consisted of three work packages:
• WP1 – Full scale testing and associated modelling, led by the Health and Safety Laboratory (HSL).
• WP2 – Detailed Fracture and Fatigue Engineering Critical Assessment (ECA), led by TWI Ltd.
• WP3 – Accident data and regulatory implications, and production of an overall summary report of the research, led by TRL Ltd.
This report provides a summary of all the project results drawing out the key conclusions for a non-technical, policy and legislative audience. Full technical details are provided in specific reports from each of the Work Packages.
Other reports in this series can be found at:

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