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UNE-EN ISO 11612:2018

PROTECTIVE CLOTHING AGAINST HEAT AND FLAME. MINIMUM PERFORMANCE REQUIREMENTS. Equivalence with EN ISO 11611:2015 & ISO 11611:2015.

OBJECT

This international standard specifies the performance for garments made from flexible materials, designed to protect the wearer’s body. Its features are applicable to garments that can be used in a wide variety of situations, where the use of clothing with limited flame spread properties is necessary and where the wearer may be exposed to radiant, convective or contact heat and metal splashes. For head/foot protection, it includes gaiters, hoods and boot covers, and does not include socks and boots.

REQUIREMENTS

Protective clothing must comply with the requirements in the table below and with at least one of the B, C, D, or F codes.

Garments that offer protection against molten metal splashes must comply with codes D and E as well as the garment design specified in the standard.

Fabrics that are intended to be an inner lining shall only comply with the tests for dimensional stability, heat resistance and limited flame propagation. In the case of a pledge, when it is an assembly, it must comply with the requirements described in the previous paragraph.

Collars and cuffs, considered accessories, must only comply with a test of limited flame propagation and resistance to heat 180ºC.

PRE-TREATMENT: minimum of 5 cycles, and/or according to manufacturer’s instructions

CONDITIONING: 24 hours AT 20 ± 2 ºC and 65 ± 5% RH. Rehearse within 5 min of conditioning

TEST METHOD	TEST STANDARD	DESCRIPTION	REQUIREMENTS
DIMENSIONAL STABILITY	ISO 5077	% shrinkage after wash cycles according to the fabric manufacturer’s instructions. By default 5 cycles minimum.	Openwork fabric Max. ± 3% warp/weft Knitted fabric Max. ± 5% length/width
HEAT RESISTANCE	ISO 17493	Pre-treated fabric subjected to 180 ± 5 °C for 5 minutes (260 ºC optional).	Shrinkage ≤ 5% length/width at 180°C and ≤ 10% at 260°C. No layer can ignite or melt.
A1 A2 LIMITED FLAME SPREAD	ISO 15025	Original Tissue: application of the flame perpendicular to the tissue (procedure A or A1); application of the flame to the edge of the tissue (procedure B or A2 optional).	Application flame 10” No specimens should ignite towards the top or to the edges, no formation of holes > 5mm, do not detach swollen debris, post ignition t ≤ 2”, post incandescence allowed within the charred area during the test.
		Pre-treated tissue: application of the flame perpendicular to the tissue (procedure A or A1); application of the flame to the edge of the tissue (procedure B or A2 optional).
		Fixtures, seams, labels, etc. must meet flammability requirements.
TENSILE STRENGTH	ISO 13934-1	Pre-treated fabric.	≥ 300 N warp/weft
TENSILE STRENGTH	ISO 13935-2	Seams	≥ 225 N
TEAR RESISTANCE	ISO 13937-2	Pre-treated fabric.	≥ 10 N warp/weft
BURST RESISTANCE FOR KNITTED FABRICS AND SEAMS	ISO 13938-1 ISO 13938-2	Area 7.3 cm2; Area 50 cm2.	≥ 200 kPa; ≥ 100 kPa
CONVECTIVE HEAT B	ISO 9151	Pre-treated fabric.	HTI VALUE RANGE 24 (s)
			B1 4.0 < 10.0
			B2 10.0 < 20.0
			B3 ≥ 20.0
RADIANT HEAT C	ISO 6942 Method B	Pre-treated fabric. Heat flow 20 kW/m2	HTI VALUE RANGE 24 (s)
			C1 7.0 < 20.0
			C2 20.0 < 50.0
			C3 50.0 < 95.0
			C4 ≥ 95.0
MOLTEN METAL SPLASH D & E	ISO 9185	Pre-treated fabric.	Tissues should not become inflamed
			(g) Aluminum
			D1 100 < 200
			D2 200 < 350
			D3 ≥ 350
			(g) Iron
			E1 60 < 120
			E2 120 < 200
			E3 ≥ 200
CONTACT HEAT F	ISO 12127-1	Pre-treated fabric. Test temperature 250 ºC	THRESHOLD TIME(s)
			F1 5.0 < 10.0
			F2 10.0 < 15.0
			F3 ≥ 15.0

GARMENTS

GARMENT DESIGN:
- Compliance with ISO 13688 requirements
- The garments must completely cover the upper and lower torso, neck, arms and legs.
- Quick release latches
- Pockets and closures: They must meet heat resistance and flammability.
DESIGN OF GARMENTS FOR PROTECTION AGAINST METAL SPLASHES
- The sleeves of jackets and overalls, as well as the hems of trousers, overalls and dungarees must not be hemmed.
- The outer pockets of jackets, trousers, overalls and bibs, except side pockets below the waist which do not form an angle greater than 10° with the side seam, must be covered by flaps at least 20 mm wider than the openings of the pockets
- The overlapping seams on the outside of the garments must be facing down and secured in this position.
- Closures should be designed with a protective flap on the outside of the suit. The maximum distance between the holes for the buttons should be 150 mm.

MARKING AND LABELLING

MARKED

It must be marked with the pictogram shown, incorporating the number and date of this international standard, as well as the levels of performance achieved according to the tests included in the previous requirements
All garments must be marked with codes A1 or A1 and A2 and at least one code plus B, C, D, E or F
If the use of a combination of garments is necessary to comply with the requirements of this international standard, it must be declared on the labels of all garments used; Each garment must be labeled in a way that ensures a correct combination.
ISO 7000-2417 Pictogram