65100 2025 eng 1428 1439 2025 conferenceobject HySafe 0 -- -- -- With advances in technological development, stationary and mobile storage units for compressed hydrogen are becoming larger and larger. Their number is also increasing. At the same time, their design has evolved from steel and aluminium to pressure vessels made of composite materials. For safety reasons the design approval of those composite cylinders requires fire engulfment tests, which are mainly organised as open-air tests always needs dedicated protection measures. Under some conditions those protections measures even reduce the effort for organisational safety measures if e.g. the emission of splinters can get totally prevented. Another aspect is the improved reproducibility of fire tests by reducing the influence of wind. Between 2017 and 2019, BAM developed a stackable protective frame made of steel to safely capture splinters for the safe execution of high-energy impact tests. However, this frame was not flexible enough for the follow-up project, which led to a completely new protection concept for (potentially) destructive tests on gas-filled pressure vessels. This concept is based on very robust building blocks made from welded steel. Despite their considerable weight of around 500 kg p.p., they can be combined and stacked very easily like ‘Lego bricks’. The presentation will show the flexibility of the concept, some results of tests on the robustness against pressure waves and the effectiveness in wind attenuation. Finally, the interaction with a new, also modular burner concept for localised fires and full engulfment fires will be presented. Proceeding 11th ICHS 2025 979-1-2243-0274-2 11th International conference on hydrogen safety (ICHS 2025) Seoul, Republic of Korea 22.09.2025 26.09.2025 publish false true Georg W. Mair Aliasghar Hajhariri Christian Sklorz Andreas Kriegsmann Karsten Müller eng uncontrolled Splinter protection eng uncontrolled Pressure vessel testing eng uncontrolled Fire engulfment eng uncontrolled Destructive tests eng uncontrolled Rupture eng uncontrolled Gaseous tests eng uncontrolled Pressure wave eng uncontrolled Test equipment eng uncontrolled Precaution measures Angewandte Physik 3 Gefahrgutumschließungen; Energiespeicher Energie Datei im Netzwerk der BAM verfügbar ("Closed Access") Graue Literatur 3.5 Sicherheit von Gasspeichern und Gefahrguttanks Wasserstoff