What is ISO 13506-1/ ISO 13506-2?

DuPont Thermo-Man® invented by DuPont, was developed in the 1970's with the US government to protect the military from burns, and was subsequently the basis for the ASTM and ISO test methods. DuPont has been active in the development of the standards but also their revisions.  This ISO Standard is split into two parts – the test method for complete garments and skin burn injury prediction.

ISO 13506-1:2017 Standard for Protective Clothing against Heat and Flame

Part 1: Test method for complete garments - Measurement of transferred energy using an instrumented manikin

This Standard specifies the overall requirements, equipment and calculation methods needed to provide results that can be used to evaluate performance of complete garments or combinations of protective clothing exposed to flash fire.

This test method establishes a rating system to depict the thermal protection provided by single-layer and multi-layer garments made of flame resistant materials. The rating is based on the measurement of heat transfer to a life-size test mannequin, when exposed to gas flame engulfment of 84 kW for a specified time, using at least 110 sensors to measure the heat transferred. The heat transfer data is captured over a prescribed period of time to determine total transferred energy. The result is a prediction of the garment’s protective performance and integrity against heat, flame and fire during such a typical fire incident.

ISO 13506-2:2017 Standard for Protective Clothing against Heat and Flame

Part 2: Skin burn injury prediction - Calculation requirements and test cases

ISO 13506-2:2017 provides technical details for calculating predicted skin burn injury following exposure to heat and flame when wearing specific protective garments. This is based on the specification and data from ISO 13506-1.

The burn injury prediction calculation method is verified with a series of test cases provided.

This test method does not include terms for predicting burn injuries caused through exposure to short wavelength radiation that may penetrate the skin e.g. arc flash, some types of fire exposures with liquid or solid fuels, and nuclear sources.