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ISO 11612: Clothing Protecting against Heat and Flames
This norm sets out performance requirements in relation to heat and flame resistance (not suitable for welding and structure firefighting) such as flame spread (code letter A), convective heat (code letter B), radiant heat (code letter C), contact heat (code letter F) and molten metal splash (code letter E).
 

Only when fulfill all the requirements below can claim to be in compliance with ENISO 11612 . When Article 10 has been completed, and Article 11 has been carried out or agreed with a Notified Body, the mark can then be affixed to the approved equipment.

ENISO 11612: 2008 Requirements – Summary

PROPERTY TEST Method EN ISO 11612規範
6.2.1 Heat resistance (at 180°C) ISO 17493: 2000 at 180°C Shall not ignite or melt or shrink ≤ 5%
6.2.2 Heat resistance (at 260°C) ISO 17493: 2000 at 260°C Shall not ignite or melt or shrink ≤ 10%
6.3.2 Limited flame spread – Face ignition (A1) (tested "as received") ISO 15025: 2000 Procedure A No flaming to edge
No holing
No melting or flaming
or molten debris
Mean afterflame ≤ 2s
Mean afterglow ≤ 2s
6.3.2 Limited flame spread – Face ignition (A1) (tested after pre- treatment) ISO 15025: 2000 Procedure A No flaming to edge
No holing
No melting or flaming
or molten debris
Mean afterflame ≤ 2s
Mean afterglow ≤ 2s
6.4 Dimensional change ISO 5077:2007 Knitted: ≤ 5%
6.5.3 Burst strength ISO 13938-1:1999 (test area 7.3cm2) ≧200kPa
6.9.2 pH value ISO 3071:2005 Greater than 3.5 and less than 9.5
7.2 Convective heat (Code letter B) ISO 9151:1995 Grade HTI24
B1 ≧4.0s
B2 ≧10.0s
B3 ≧20.0s
(based on lowest result)
7.3 Radiant heat (Code letter C) ISO 6942:2002 MethodB at 20kW/m2TEST Grade RHTI24
C1 ≧7.0s
C2 ≧20.0s
C3 ≧50.0s
C4 ≧95.0s
(based on lowest result)
7.6 Contact heat (Code letter F) ISO 12127: 1996 Tc=250℃ Grade tt
F1 ≧5.0s
F2 ≧10.0s
F3 ≧15.0s
(based on lowest result)
 
 
EN469
EN659 & EN420
EN13911
ENISO 11612
ENISO 11611
EN1149
ENIEC 61482-1-2
 
 
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