MARLAN | EUROPEAN
NORMS PROTECTION FIRE
Protective clothing which meet this Norm is designed to protect industrial workers from a short contact with flame and at least one type of heat. The heat can be convector heat, radiant heat, molten metal splashes or a combination.
This Norm determines the flame impact of the textiles.
A flame is applied in perpendicular during 10 s on a sample or placed vertically. Before this time the next points are valued:
- The extent of the burning to upper and side edges.
- The formation of holes.
- No burnt or molten remains have been detached.
The time of after flame and after glow does not exceed 2 s.
The result is defined with the code A (PASS)
A sample is subjected to a calorific flux of 80 Kw/m2. A calorimeter (in contact with the sample) will measure the necessary time in order to produce a increase of temperature of 24ºC ± 0,2ºC
The result is defined with the code B and a digit which defines the protection level.
| Protection level | Interval of values (s) | |
| Minimum | Maximum | |
| B1 | 3 | 6 |
| B2 | 7 | 12 |
| B3 | 13 | 20 |
| B4 | 21 | 30 |
| B5 | 31 | |
A source of radiant heat with a density calorific flux of 20 Kw/m2 falls upon a sample. This test, measures the necessary time in seconds for the person begin to feel pain, and the necessary in order to produce burns of 2nd degree.
The result obtained is defined with the code C and a digit which defines
the protection level.
| Protection Level | Average temperature (s) | |
| Minimum | Maximum | |
| C1 | 8 | 30 |
| C2 | 31 | 90 |
| C3 | 91 | 150 |
| C4 | 151 | |
Difference quantities of molten metal are poured on a sample supported with a determined angle. It is valued the damage produced on the sample and on the PVC film which is situated behind fabric in order to simulate the human skin is then valued.
The result obtained is defined with the code E and a digit which defines
the protection level.
| Test conditions | |
| Temperature of aluminium (ºC) | 1400 ± 20 |
| Angle of poured | 75 ± 1 |
| Height (mm) | 225 ± 5 |
| Protecction level | Index of molten iron splashes (g) | |
| Minimum | Maximum | |
| E1 | 60 | 120 |
| E2 | 121 | 200 |
| E3 | 201 | |
Different quantities of molten metal are poured on a sample supported with a determined angle. It is valued the damages produced on the sample and on the PVC film which is situated behind fabric in order to simulate the human skin.
The result obtained is defined with the code D and a digit which defines
the protection level.
| Test conditions | |
| Temperature of aluminium (ºC) | 780 ± 20 |
| Angle of poured | 60 ± 1 |
| Height (mm) | 225 ± 5 |
| Protecction level | Index of molten aluminium splashes (g) | |
| Minimum | Maximum | |
| D1 | 100 | 200 |
| D2 | 201 | 350 |
| D3 | 351 | |
The objective this Norm is to define the required requests in design and thermal protection in order to manufacture garments for welding or similar applications. These garments may protect to the user against the small molten splashes, due to the short contact with a flame, so against the ultraviolet radiation.
Additional fabric norms also required for clothing, are as follows:
| NORM | TEST |
| ISO 5081 | Tensile Strength |
| EN 532 | Flame spread |
| EN 348 | Performance against the molten metal splashes |
| ISO 5077 | Dimensional change |
| ISO 4674 | Tear strenght |
Small drops of molten metal are projected on to the fabric. The test then measures the number of drops necessary in order to increase 40ºK the temperature of a sensor placed behind the sample.
The minimum number of drops may be 15.
Marlan 365 test result is based on the actual test prior to 5 washing cycles and then after the retreatment.
Then two electrodes are introduced Al and Cu. The electrical arc current is 4KA with an open test circuit voltage of 400 V. The main consequences are the highest temperatures and the molten metal splashes.
This then meets the approval of the above standard.
Marlan was tested by BTTG Fire Technical Services to meet the IPAI test method Procedure B using reduction cell flux for the aluminium industry to achieve the European norm EN373.
This test procedure involves pouring cryolite at a temperature of 1200ºC and increasing the amount by 10g increments until damage occurs. Then the ratio: molten flux splash index / fabric mass is calculated.
This European Standard specifies electrostatic requirements and test methods for electrostatic dissipation protective clothing to avoid incendiary discharges.
This test measures the anti-static characteristics of the fabrics. This
norm define if a fabric is conductive, anti-static or insulating.
For materials containing conducting threads shall have:
-resistances none of which exceeds 109 omnios on a least one
surface.
-a grid pattern of conducting threads.
-a maximum spacing of 10 mm between the conducting threads.