EN407:2004

Protection against thermal risks

 

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The level of protection of the glove against risks related to heat and fire is formulated by a pictogram accompanied by 6 figures corresponding to the levels of performance indicated below the pictogram.

These risks are mainly due to contact with strong heat generated by combustion, radiation or molten metal.

 

Level of protection 1 2 3 4
A Fire behavior
Delay after burning
Time after incandescence

20
no condition

1 0
1 20

3
25


2
5
B. Contact heat (s)
100 ° C
15
250 ° C
15
350 ° C
15
500 ° C
15
C. Convective heat (s)
4
7
10
18
D. Radiant heat (s)
7
20
50
95
E. Small projections of molten metal (no)
10
15
25
35
F. Large amount of molten metal
30
60
120
200

Letter A of the pictogram : Resistance to flammability.

The resistance to flammability of the glove is measured. The test consists of measuring the time required to stop the combustion of the glove material after 15 seconds of exposure to a gas flame. The highest level of performance is level 4 corresponding to a maximum delay of two seconds for combustion.

 If the glove is in danger of coming into contact with the fire, it must at least reach Level 3.

Letter B of the pictogram: Resistance to heat by contact

The resistance to heat is measured by contact. The test consists of calculating the temperature (100 ° C- 500 ° C) for which the glove must provide protection for 15 seconds without increasing its inside temperature by more than ten degrees.

 The highest level of performance is level 4, indicating that the glove can withstand + 500 ° C.

Letter C of the pictogram: Resistance to convective heat

The resistance to convective heat (= heat penetrating progressively) is measured. The test measures the time required to increase the temperature by 24 degrees inside the glove when the heat is produced by a flame. The highest level of performance is level 4, which is more than 18 seconds.

Letter D of the pictogram: Resistance to radiant heat

The resistance to radiant heat is measured. The test measures the time required for a quantity of heat to enter the glove when the glove is exposed to heat radiation. The highest level of performance is level 4, which means that the glove provides protection for at least 95 seconds.

Letter E of the pictogram: Resistance to small projections of molten metal

The resistance to small projections of molten metal is measured. The test measures the number of drops of molten metal required to increase the inside temperature of the glove by 40 ° C. The highest level of performance is level 4 corresponding to 35 drops or more.

Letter F of the pictogram: Resistance to large quantities of molten metal

The resistance to large amounts of molten metal is measured. The test measures the amount of molten iron needed to damage a synthetic material inside the glove. The highest level of performance is level 4, corresponding to 200 grams of liquid metal.