BS EN 15947-4:2015 pdf download – Pyrotechnic articles — Fireworks, Categories F1, F2 and F3 Part 4: Test methods
The test area shall be indoors.
The test area shall be inside a fume cupboard, or similar enclosed space, which is capable of preventing movement of air.
The test area shall be an outdoor site. If applicable, provisions shall be made at the centre of the test area for partially burying into the ground.
If applicable, insert support pole in the centre of the test area.
A means of measuring the wind speed at a height of 1,5 m above the ground shall be provided. No performance testing shall be carried out if the wind speed exceeds 5,0 m/s.
4.3.2 Category F1
A test area meeting the requirements given in 4.1, with a radius of at least 2,0 m and a circle, radius 1,0 m, shall be marked around the centre of the test area.
4.3.3 Category F2
A test area meeting the requirements given in 4.1, with a radius of at least 9,0 m and a circle, radius 8,0 m, shall be marked around the centre of the test area.
4.3.4 Category F3
A test area meeting the requirements given in 4.1, with a radius of at least 16,0 m and a circle, radius 15,0 m, shall be marked around the centre of the test area.
4.4 Monitoring height
Two positions for monitoring the height of ascent and angle of flight shall be provided, at a measured distance of at least 50 m from and at an angle of 90° to each other in relation to the testing point. If the monitoring positions are not in the same horizontal plane, appropriate corrections shall be made in the calculation of heights.
If necessary the measuring distance and the number of positions may be adapted to the firework.
NOTE The described apparatuses are only examples, any equivalent apparatus with the same accuracy or better can be used.
5.1 Timing device.
5.1.1 Timing device, capable of being read to the nearest 0,1 s.
5.1.2 Timing device, capable of being read to the nearest 1 min.
5.2 Calliper, flat faced vernier calliper reading to 0,1 mm, conforming to ISO 13385-1.
5.3 Ruler, reading to 1 mm.
5.4 Measuring tape, reading to 10 mm.
5.5 Wind speed meter, capable to measure with accuracy of at least 0,5 m/s.
5.6 Masses with clamping device.
5.6.1 (50 ± 1,0) g mass total.
5.6.2 (100 ± 1,0) g mass total.
5.6.3 (500 ± 1,0) g mass total.
5.7.1 Balance, reading to 100 mg.
5.7.2 Balance, reading to 10 mg.
5.7.3 Balance, reading to 0,1 mg.
5.8 Abrasive sheet, large enough to permit striking of the ignition head, conforming to ISO 21948,grit P240 measured in accordance with ISO 6344-3.
5.9 Temperature chamber.
5.9.1 Up to (+ 130 ± 2,5) °C.
5.9.2 Up to (+ 75 ± 2,5) °C.
5.9.3 Up to (+ 50 ± 2,5) °C.
5.10 Test paper, 700 mm × 750 mm, (80 ± 3,0) g/m 2 .
5.11 Clamping device.
Means of clamping to hold different test sample at different heights and/or angles.
5.12 Plate, non-flammable, with a diameter of (200 ± 5) mm.
5.13 Paper holder.
Means of clamping to fix the test paper in a horizontal or vertical plane in different heights.
5.14 Viewing screen.
Suitable viewing screens, as shown in Figure 1, shall be provided for monitoring height and angle of flight criteria.
5.15 Poles, with 3 m height.
NOTE A vertical height of 3 m can be identified by the poles placed around the perimeter of the test area and the 8 m height can be estimated using the same poles.
Horizontal plate with a central hole of 800 mm diameter, mounted in a height of 3,0 m above the ground
in a mobile rack.
5.17 Sound level meter to class 1 of EN 61672-1:2013 with free-field microphone.
5.18 Shock apparatus, shall provide a deceleration of 490 − + 1 5 00 m/s
2 (when measured at the centre of an unloaded platform) and the mechanical conditioning impulse duration (time elapsed from the starting of the machine’s deceleration to the time in which the deceleration reaches its maximum value during each first shock pulse) shall be 2 ms ± 1 ms working at a frequency of 1 Hz ± 0,1 Hz.
An example of an apparatus is shown in Annex A.
5.19 Goniometer, read to 1°.BS EN 15947-4 pdf download.