What is ISO 17492- Determination of heat transmission on clothing for protection against heat and flame about?
ISO 17492 discusses clothing for protection against heat and flame. ISO 17492 is an international standard on the determination of heat transmission on exposure to both flame and radiant heat ensuring protection against thermal hazards.
ISO 17492 specifies a test method for measuring the heat transferred through horizontally mounted flame-resistant textile materials when exposed to a combination of convective and radiant heat. The exposure conditions are adjusted to be a 50/50 mixture of pure convective heat and pure radiant heat. The total exposure heat flux is 84 kW/m2.
The test method specified by ISO 17492 applies to any type of sheet material used either as a single layer or in a multilayer construction when all structures or sub-assemblies are made of flame-resistant materials.
Note 1: The method under ISO 17492 applies to materials that are not flame resistant.
Note 2: The test method specified by ISO 17492 does not apply to the evaluation of materials exposed to any other type of thermal energy sources, such as radiant heat only or flame contact only.
Note3: Some, but not all, textiles materials can ignite and continue to burn after exposure to the convective and radiant heat produced by the method specified in ISO 17492.
Note 4: The test method specified by ISO 17492 does not necessarily correlate to the heat-insulation performance of vertically oriented flame-resistant textile materials when exposed to convective and radiant heat or used in actual clothing configurations.
Note 5: It is not recommended to use ISO 17492 to describe or appraise a fire hazard or fire risk of materials, products, or assemblies under actual fire conditions.
Who is ISO 17492- Determination of heat transmission on clothing for protection against heat and flame for?
ISO 17492 on the determination of heat transmission on clothing for protection against heat and flame is useful for:
- Thermal clothing manufacturers
- Thermal clothing testing laboratories/test personnel
- Health and safety departments
- Quality assurance authorities
Why should you use ISO 17492- Determination of heat transmission on clothing for protection against heat and flame?
The measurement of the thermal energy transferred from the exterior of a material to the interior when exposed to a thermal hazard can be a significant factor in determining the level of protection or insulation provided by an assembly. The purpose of an assembly for thermal protection is to prevent or reduce the potential for a skin burn injury to the wearer.
ISO 17492 provides you with apparatus, sampling, precautions, conditioning and testing atmospheres, test methods, and test procedures.
The test methods and procedures provided by ISO 17492 assist you to improve the performance of thermal clothing to ensure protection against thermal injuries.
By adopting ISO 17492 the user can enhance the efficiency of thermal clothing to produce a product of higher quality and standard.
What is changed since the last update?
BS ISO 17492:2019 is the second edition that cancels and replaces the first edition ISO 17492:2003. BS ISO 17492:2019 has made some technical changes compared to the previous edition ISO 17492:2003. These include:
- Technical modifications and rewording have been made to all clauses, including Annexes A and B
- Clauses 5 to 12 have been renumbered
- Modifications have been made to Figures 1, 2 and 3