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PERFORMANCE LEVELS
The International Standard EN ISO 11612:2008 “Protective clothing to protect against heat and flame” offers three performance levels based on the mass of molten metal poured onto the surface of the fabric, which causes no damage to a skin simulant positioned behind the fabric. When tested in accordance with ISO 9185 using molten aluminium (D) or Molten Iron (E), all fabrics must meet at least level 1 (D1 0r E1) in the table below.
DESIGN
It is essential that garment design eliminates all trapping points. The following features are recommended for the design of protective clothing: Front of garment should have a plain outer surface. Jackets and coveralls should have internal pockets. Quick release fastenings should be fitted to allow fast removal in emergencies. Jackets should be long enough to cover the top of the trouser even when bending down. Trouser bottoms should be wide enough and long enough to overlap the top of the boot. Double layers should be considered to protect critical parts of the body. The following recommendations should also be taken into consideration: Labels, badges, retro reflective tape etc on the front of a garment may affect the performance, by preventing the shedding of molten metal. Clothing, including under garments, made from nylon or polyester should not be worn when working with molten metals because these materials are prone to melting.
Performance levels
Molten iron splash (Min)
Molten iron splash (Max)
E1
60g
< 120g
E2
120g
< 200g
E3
200g
Also acceptable for molten aluminium bronze and molten minerals.
Performance levels
Molten iron splash (Min)
Molten iron splash (Max)
D1
100g
< 120g
D2
200g
< 200g
D3
350g
Also acceptable for molten copper, molten phosphor bronze and molten brass.
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