The tests show that present day requirements for 5mm/min can control a fire in a simulated heavy goods vehicle trailer, although the heat release rate is still very high. There would be a considerable risk of the fire spreading to other vehicles on the same deck, or to vehicles on a deck above. Increasing the water flow rate to 10mm/min significantly improves the performance, and would probably quickly suppress a fire in a goods vehicle trailer. A further increase of the delivery rate to 15mm/min improves the performance, although not by as much as that from 5mm/min to 10mm/min. The results also indicate that a higher system pressure, with smaller water droplets, improves the performance.
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