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Concept - Model BS476-6 -Fire Propagation Apparatus
The BS476-6 Fire Propagation test provides information on the influence that a simple material, a composite of materials or an assembly of materials, would make to the rate of fire growth within a compartment.
Although often termed a “heat release” test, the result represents a much more complicated product of several factors including ignition, heat release and thermal properties. Comparisons are made between the effluent gas temperature/time relationships within the chimney of the apparatus for a reference material and for the product under evaluation. The reference material is also used as a calibration sheet to ensure correct setting and operation of the apparatus and consistency between tests.
Apparatus Features:
- Stainless steel legs and chamber support chassis
- 12mm thick calcium silicate combustion chamber
- 12mm thick calcium silicate specimen holder
- 3 off Calcium silicate spacer boards for various thickness samples
- 3 off Non combustible ceramic gaskets
- Low reflective black finished mild steel Chimney and Cowl assembly complete with thermocouple mounting points
- Compliant stainless steel gas burner
- Two high power cartridge heaters connected with high temperature supply cable
- Two K type mineral insulated thermocouples complete with ceramic insulators
- Control gas instrumentation including electronic gas on/off valve, flow regulating valve, flow meter and manometer
- Temperature measurement with cold junction compensation
- Intelligent single phase power controller with feedback loop for accurate control of electric heating elements
- Digital Watt transducer allowing software control of power value of electric heaters
- Integrated timer with digital display on software interface
- Bench top control enclosure with 3 meter umbilical connecting cable assembly
- Remote handset to allow ignition of Gas burner if apparatus is located away from control module
Data Acquisition system and Software Package featuring;
- Prompted software interface
- Data recording and display of cowl temperature against time
- Data recording and display of ambient temperature against time
- Display of power value in kW
- Calibration routine
- Calculation of output rise and calibration value
- Electrical: 230 volts – Nominal 10 Amps
- Ambient Temperature: Operating 10°C to 35°C
- Dimensions: Apparatus: 400mm (W) x 600mm x (H) x 300mm (D)
- Control module: 400mm (W) x 500mm x (H) x 400mm (D)
- Gas Supplies: The gas supply specified in the Standard is Standard test gas G112, as specified in BS 4947.
- Flow: Gas flow for burner adjustable from 0 to 5 nl/min
- Pressure: 1kPa