Towards updated crashworthiness guidelines for safe transport of hazardous cargo on inland waterways
conference paper
Design and operation of inland waterway ships carrying dangerous goods are governed by the European Agreement concerning the International Carriage of Dangerous Goods by Inland Water ways (ADN). In order to limit the risk of transporting these goods, the tank size of an individual cargo tank is limited at 380 m3 . Larger tanks up to 1000 m3 are allowed when the consequence of a larger leak after a collision is compensated by a lower probability of a spill by improved crashworthiness of the ship structure. The guidelines on additional crashworthiness were introduced in 2005 and based on the knowledge and state-of-the-art at that time but have at some points become outdated. This paper presents the main findings and conclusions of a study addressing the state-of-the-art in three categories and proposes several updates. Firstly, the available collision energy on the European inland waterways was determined based on ship passages at Lobith showing that on average inland waterway vessels have increased in size and mass over the past 20 years. Secondly, a parameter study using explicit FEA was carried out to investigate the effect of assumptions in the crashworthiness calculations on the energy absorbing capacity of the vessel and a proposal for a more robust calculation method is made. Finally, an investigation on the affected area in case of a tank breach for various substances during a collision was carried out, showing that areas beyond the riverbanks might also be affected when tanks become larger than 1000 m3 , depending on the cargo that is transported.
Topics
TNO Identifier
991330
Publisher
Routledge Taylor & Francis Group
Source title
Advances in the Collision and Grounding of Ships and Offshore Structures. Proceedings of the 9th International Conference on Collision and Grounding of Ships and Offshore Structures (ICCGS 2023), Nantes, France, 11-13 September 2023
Pages
91-100