Test for second characteristic numeral 6 with the 12,5 mm nozzle
The test is made by spraying the enclosure from all practicable directions with a stream of water from a standard test nozzle as shown in figure 6.
The conditions to be observed are as follows:
– internal diameter of the nozzle: 12,5 mm;
– delivery rate: 100 l/min ± 5 %;
– water pressure: to be adjusted to achieve the specified delivery rate;
– core of the substantial stream: circle of approximately 120 mm diameter at 2,5 m distance from nozzle;
– test duration per square metre of enclosure surface area likely to be sprayed: 1 min;
– minimum test duration: 3 min;
– distance from nozzle to enclosure surface: between 2,5 m and 3 m.
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