This International Standard lays down the performance of protective clothing made of various material that is designed to protect the wearer’s body from heat and flame except for the face.
Requirements for fabrics under <a href="https://gomlab.net/what-is-iso-11612">ISO 11612</a>
The durable fabric has to pass a total of two tests in order to reach the EN ISO 11612 standard: the A test and the B, C, D or E test. The performance of the fabric is noted per test.
Test A: Flame spread
Test B: Convective heating
Test C: Radiant heat
Test D/E: Molten metal
Test F: Contact heat
The test results are divided into levels of performance. For example, level 1 indicates the minimum security available in the fabric for passing a test. It is advisable not only to see if a fabric passes the test, but also, to what degree, if you are responsible for protective clothing for your company.
The chest, throat, neck, arms, and legs should be protected by the jacket, pant, and overall. During all work operations, a 20 cm overlap is necessary between the jacket and the pants. Metal elements should not come into direct contact with the skin of the wearer. More specification criteria apply to code letters D and E.