HAZCHEM Catalogue - Flipbook - Page 173
EN ISO 11612
Protective Clothing to protect against Heat & Flame
This EN Norm specifies PPE clothing for use when working where this is a risk that the garments
will come into contact with heat and flame. It is divided into different categories where code
letters (A, B, C, D and E) indicate which heat and flame requirements the garment needs to
fulfil. These code letters represent hazards including radiant heat, convective heat and splatters of molten metal or
aluminium. Code A1 and/or A2 is mandatory, and a minimum of 1 other letter is required in order to CE mark the
garment. The code letters are classified in different levels where the highest number is the the highest tested level.
The design of the garments is also a critical factor in garments certified to these EN Norms.
Heat Transmission Performance Requirements
Code Letter
Description
Performance Levels
A
Limited Flame Spread
Tested after washing (pre-treatment) according to ISO 15025
B
Convective Heat
Level B1 - B3 (with B3 being the highest) when tested in accordance with ISO 9151
C
Radiant Heat
Level C1 - C4 (with C4 being the highest) when tested in accordance with ISO 6942
D
Molten Aluminium Splash
Level D1- D3 (with D3 being the highest) when tested in accordance with ISO 9185
E
Molten Iron Splash
Level E1- E3 (with E3 being the highest) when tested in accordance with ISO 9185
F
Contact Heat
Level F1- F3 (with F3 being the highest) when tested in accordance with ISO 12127 at 2500 C
General advise regarding 2 Part Garments (e.g. Trouser/Jackets)
If single items are worn i.e. a flame resistant polo-shirt, then another the item must also be worn (e.g. Flame Resistant
trouser) also meeting the standard must be worn. Nonconforming garments worn over any flame resistant garments
would eliminate the effectiveness of the garment.
In order to ensure adequate protection, an overlap of 20cm from the hem of the upper garment to the waistband of the
trouser must be maintained when worn. If a 20cm overlap is not maintained when worn with waistband trousers, then
the garments must only be worn after an appropriate risk assessment has been conducted. Under no circumstances
should garment combinations be worn where a situation where no overlap (a gap) occurs in use.
US Standard NFPA 2112
The US standard for Heat and Flame protection is NFPA2112. The main difference in this standard is the char length
test and that some tests are performed after 100 washes versus the typical 50 washes in the EN Norms. EN ISO 11612
is however an international standard and is approved by the United States.
EN 13034
Protective clothing against Liquid Chemicals
PPE within this category must demonstrate it’s suitability to protect where there is a risk of
potential exposure to a light spray, liquid aerosols or low pressure, low volume splashes against
which a complete liquid permeation barrier (at molecular level) is not required. This standard
tests four different chemical types: Acid, Alcaline, Aromatic Hydrycarbone and Alcohol. At least two out of four
chemicals must pass the test to be able to certify and CE mark the garments with this symbol and the highest level is 3.
Chemicals that are tested in accordance to EN 13034:
H2SO4 30% (Sulphuric acid), NaOH 10% (Sodium hydroxide also called lye and caustic soda), O-xylene, Butanol
Note: The FC (Fluorocarbon) finish used for EN 13034 certification needs to be re-activated by heating the garment
after each wash cycle and the garment must also be re-impregnated when necessary. We recommend discussing this
with your Laundry provider for advise on how they can ensure this is done. If you are working with other chemicals
or other concentrations of the above chemicals, you should contact the PPE manufacturer for specific information
related to your risk.
For specific information about the levels to which your PPE protects, refer to the User Information sheet included
with your garment where this information will be provided.
Donside Safety T: +44 (0)1224 707468
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