What Do You Know About ISO 11612? Explain The Main Points

What Do You Know About ISO 11612? Explain The Main Points

EN ISO 11612

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. The only protective clothing within the framework of this International Standard to protect the wearer’s head and foot are shoes, hoods and over boots. Nonetheless, visor and breathing equipment specifications for hoods are not specified.

This standard applies to protective clothing that can be worn in many end applications. There is a need for the clothing to have a minimal flaming tendency because the consumer can be exposed to radiant or convective or contact heat or to molten metal splashing.

The Standard does not refer to protective clothing that other International Standards define.

Requirements for fabrics under ISO 11612

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.

The different levels of performance are important to understand because they are connected to the magnitude of the risk involved. For example, the three-level of efficiency for the E-test informs you about protection for a molten iron splash in different quantities: E1 stands for iron slashes from 60 to 120 grams and E3 for over 200 grams. You have to choose the best level of performance based on the risk levels of your working environment.

General requirements: Heat resistance at a temperature of 180 °C: The material must not ignite or melt and must not shrink more than 5%. The material must meet a minimum requirement for tearing and abrasion resistance.

Manikin testing for ISO 11612

This optional ISO 13506 test will be performed on each fabric, performed by the testing groups and companies designated in your region. The fabric requires a number of washes before testing on the manikin as washing reduces the effectiveness of the fabric and makes it weaker.

The test may take 3 seconds, but it can go further on if desired and a lot of brands have different records which they sell their product on. But these fabrics must be EN ISO 11612 standard tested. It may not seem to be an enormous difference, just a second but an extra second releases a third more 84 kJ of energy per mtr2 per second. Temperatures vary from 800–1000 C during the processing.


Ensuring full protection

Apart from other protective clothing that meets the requirements of ISO 11612, undergarments approved under EN 11612 should be used. However, the standard needs full arm and leg protection, meaning that t-shirts and shorts do not meet the requirements of EN ISO 11612. The customer may, however, wear the clothes under enhanced security approved in compliance with EN 14116 (which have no equivalent design requirements).

In order to ensure full protection, other permitted protective clothing must cover the head, arms, hands, and feet. Remember that underwear listed clothing should always be worn in conjunction with outer clothes that meet EN 11612 security specifications. The underwear does not offer the correct level of protection on its own.

It depends on the buyer needs

EN 11612 is the best way to ensure the minimum heat and fire hazards for worker protective clothing. Yet the working environment’s daily practice impacts the safety level of the staff. Provide the full test results also so that you can understand how your standards of success suit your experience.

Hire people that can assess the dangers lurking in your environment and buy protective clothing accordingly. If the buyer is not aware of the hazards that occur in their workplace, they can buy the wrong type of product and risk the lives of multiple people. Little mistakes like these can cause industries to shut down because they lack the proper safety standards. If the owner must have a healthy business they must invest time in the protection of the staff.

Attiq Rehman

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