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Why a company needs ISO 11611 & ISO 11612 Certificate? ISO 11611and other Standards

Why a company needs ISO 11611 & ISO 11612 Certificate?

There are some experts who have to work around flames, it’s their job to put their lives at risk to carry out their certain tasks. For such people, FR fabrics are the best protection against fire and heat. In order to protect employees and ensure the workers remain healthy and safe regulations, the management of the risk characteristics in the work environment is assed thoroughly. As far as thermal safety is concerned, there is a large variety of lightweight clothing under En ISO 11611 usually made of heat and flame resistant fabrics.

Protective fabrics cannot be sold without proper evaluation and testing. These tests are done under various certificates and standards that cover different parts of clothing and testing varies with the number of the certificate.

The present tradition refers to wearers’ clothes, which are designed to protect against the flames and heat of various welding equipment, brief contact with flame. This specific standard unlike ISO 11612 refers to electric arcs, which glow from the electrical arc for welding metals and other similar processes. This requirement shall be applicable for the wearer under usual welding conditions.

It provides minimum requirements for the protection through garments to protect the wearer’s body, including slats, which represent two-degrees of exposure to the leak. This does not include feet, elbows, facial, and/or eye security equipment, although some global guidelines specify these specifications.

ISO 11612 Certificate

This universal standard lays out the standard for thermal protective clothing consisting of many fabrics to shield the human body from heat and fire. Within the framework of this World Norm works on footwear, and headwear clothing. In addition, hood safety and inhalation equipment specifications are not a part of this certification.

The norm extends to safety garments which are appropriate for many applications. A minimum flammable inclination for the clothes is a requirement so that the consumer may not burn when touching hot surfaces or flames. The security equipment set by others apart from En ISO 11612, globalized standards may not necessarily be similar to this one.


The apparel has to be in check for radiant heat, molten metal, fire distribution, and electricity resistance, to qualify for these certifications. However, this standard is further split into two classes. In class 1 the time limit is extended while in class 2 the security from short connection specifications. Both grades in ISO 11611 have separate assessments, and the clothes should be able to pass class 2 tests to qualify for class 2.

For Heat resistance

Group 1: These fabrics will resist 24°C temperature for 7 seconds

Group 2: These fabrics will resist 24°C temperature for 16 seconds

For Molten Metal resistance

Class 1: These fabrics will resist molten metal of temperature 40°C for at least 15 droplets

Class 2: These fabrics will resist molten metal of temperature 40°C for at least droplets

For Electrical resistance in ISO 11611 Certificate

Most fabrics should resist 105 Ω of electricity

Testing in Certificate 11612

This standard is typically in use for cloaks for flame protection, heat transfer, and heat from furnaces, protecting suit or pants and jacket. The test of the flame propagation is divided into two parts:

A1 for surfaces and A2 for edges.

Each test has two levels of output of class 1 and class 2 in ISO 11612, as mentioned above. For the purpose of calculating heat transfer resistance, the clothes must apply for 5 tests to determine the heat transfer associated with different alphabets. In order to qualify for ISO 11612, clothing must fulfill at least one of the following tests.

  • B- When touching a direct flame, a heat transfer test (also known as a test for convective heat)
  • C- Heat transfer test against heat sources
  • D- Heat transfer test against molten aluminum
  • E- Heat transfer test against molten iron
  • F- Heat transfer test against hot surfaces

Mannequin Test

This material is carried out with the optional ISO 13506 certificate by the test groups and companies in your region. The washing of the fabric a few times before measuring the manikin, so the fabric can be at its most vulnerable and the fabric is less successful. The testing can take 3 seconds, so if you choose it will continue, and many businesses will sell their goods on various accounts according to results. However, the checking in En ISO 11612 must be standard. It seems not to be an immense gap, only a second but an extra second releases 84 kJ of energy per mtr2/sek. Temperatures range from 800 to 1000 ° C in the production process.

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