Flame Engulfment Test
Compliance
ISO 23269-2
The Flame Engulfment Test Device, in accordance with ISO 23269-2, is used to evaluate the flame resistance performance of a self-contained breathing apparatus exposed to an engulfed flame.
Flame engulfment test procedure:
1) The complete breathing apparatus is mounted on the metallic test manikin;
2) The breathing is set at a rate of 25 cycles per min and 2 liters per stroke;
3) The test manikin is moved into the oven when has been preheated to 90 degrees for 15mins (after the oven recovers to 90 degrees);
4) Moves the test manikin to the center of the burner array, and apply the engulfed flame to the test manikin for 10 seconds.
5) Moves the test manikin aside, raises to 150mm in height, and drops it freely.
6) The test specimen passed if the following conditions were met：
a) No afterflame continues for more than 5 seconds after flame engulfment.
b)No components separated or displaced that would cause breathing detached
, or fail to breathe resistance after the drop test.
Flame Engulfment Test Device(Side View)
Features
The Flame Engulfment Test Device consists of a test rig, oven, test manikin, burner array, drop device, and control system.
The preheating oven provides homogeneous temperature by circulating heating air, temperature up to 100 degrees.
The oven can fast reheat to 90 degrees when the manikin moved into the oven, the temperature is controlled by a PID controller and with a resolution of 0.1 degrees.
The metallic manikin is designed and manufactured in accordance with ISO 23269-2.
The metallic manikin is mounted on the metal trolley, the trolley can move horizontally.
The burner array consists of four burners at the front and back of the manikin. The length of each burner is 900mm. The burner meets the requirements of ISO 23269-2.
The engulfed flame is ignited and stopped simultaneously, it’s auto-controlled by the software.
The burner is supplied with propane and air mixed gas separately, each burner flame can reach a temperature of 950 degrees.
Equips with flame temperature calibration device, measurement range up to 1000 degrees, and with a resolution of 0.1 degrees.
Equips with lift and drop device, auto-controlled by the software.
The control system includes oven temperature control, manikin trolley control, burner flame control, and drop test control. The flame engulfment test is automatically performed.