GB/T 28752 IMO Heat Radiation Flame Spread Test Apparatus，Thermal Radiation Flame Propagation Test Machine

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Application

Building Industry

Flame spread testing of construction materials such as wall linings, ceilings, partitions, and insulation boards to verify compliance with fire safety requirements.

High-Speed Railway

Evaluation of interior materials used in high-speed trains, including seats, wall panels, ceilings, and decorative components, to ensure passenger safety.

Shipbuilding and Marine Engineering

Fire performance testing of bulkhead, ceiling, and deck materials used in ships and offshore structures.

Fire Safety Testing and Certification

Measurement of flame spread rate, ignition heat, and heat release for fire-resistant material development and safety certification.

Material Manufacturers

Performance evaluation of plastics, rubber, composite materials, and other products under radiant heat exposure to improve fire protection properties.

Standards

The apparatus complies with the following standards:

(1) GB/T 28752-2012 – Test Method for Lateral Flame Spread on Vertical Surfaces

(2) ISO 5658-2 – Reaction to Fire Tests — Spread of Flame — Part 2: Lateral Spread on Building Products in Vertical Configuration

(3) IMO Resolution A.653(16) – Surface Flammability of Bulkhead, Ceiling and Deck Finish Materials

Parameters

Item	Specification
Methane Calibration Burner	1 kW and 3 kW flame output
Radiant Panel Size	480 mm × 280 mm
Ambient Temperature Range	10 °C to 35 °C
Calibration Gas	Methane
Combustion Gas	Propane or Methane
Power Supply	220 V, 10 A
Equipment Dimensions (Standard)	1100 mm × 1100 mm × 1700 mm
Equipment Dimensions (Optional)	1530 mm × 900 mm × 1650 mm
Equipment Weight	128 kg
Measured Parameters	Critical heat flux, ignition heat, total heat release

Features

Comprehensive Fire Performance Measurement

Simultaneous evaluation of flame spread rate, ignition heat, critical heat flux, heat release rate, and sustained combustion heat.

Accurate Gas Flow Control

Equipped with a propane mass flow controller and Venturi gas mixer to ensure stable and precise combustion conditions.

Efficient Cooling System

Portable water-circulation cooling unit effectively removes heat from the heat flux sensor, maintaining measurement stability.

Video Monitoring and Data Recording

Integrated camera monitors the entire test process and stores measurement status for traceability.

Automated Control System

Standard testing software enables automated operation, minimizing operator influence and improving test repeatability.

High-Precision Radiant Heat Flux Measurement

Built-in water-cooled radiant heat flux sensor accurately records radiant heat distribution curves.

User-Friendly Operation

Adjustable observation window allows clear visual monitoring of flame spread, combined with a foot switch for automatic data recording.

Accessories

(1) Methane gas cylinder (user supplied, purity ≥95%)

(2) Propane gas cylinder (user supplied)

(3) Mass flow controller set

(4) Water-cooling circulation unit

(5) Ceramic tube burner

(6) Thermocouple set

(7) Glass observation window with foot switch

(8) Video monitoring system

(9) Adjustment unit including rotameter

Test Procedures

Install the test specimen securely onto the specimen holder in a vertical position.

Select the appropriate combustion gas and set the required gas flow rate.

Start the system and verify the operational status of sensors and gas components.

Initiate the flame spread test; the system applies radiant heat and pilot flame automatically.

The software records flame spread rate, ignition heat, heat release, and related parameters.

After completion, shut off the gas supply and clean the test area in preparation for the next test.

Maintenance Information

Regularly inspect gas pipelines, valves, and flow controllers for leakage or blockage.

Clean the radiant panel surface and observation window to maintain measurement accuracy.

Ensure the water-cooling system operates properly and replace coolant as required.

Calibrate heat flux sensors and thermocouples periodically according to standard procedures.

Store the apparatus in a dry, well-ventilated environment when not in use.

Conclusion

The GB/T 28752 IMO Heat Radiation Flame Spread Test Apparatus provides reliable and standardized evaluation of flame spread and heat release characteristics for materials used in construction, transportation, and marine industries. With precise gas control, automated testing, and comprehensive data acquisition, the system supports accurate fire performance assessment and regulatory compliance across multiple application fields.

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