ISO 14877:2002 pdf download
ISO 14877:2002 pdf download.Protective clothing for abrasive blasting operations using granular abrasives.
5 Testing
5.1 Sampling and conditioning
The samples taken shall be representative for the materials and design of the clothing or glove.
The number and sizes of the samples for the individual tests shall be in accordance with the relevant standards. Testing shall be carried out with the materials such as supplied, unless otherwise specified.
For all surface testing, the outermost surface shall be exposed.
5.2 Test methods for protective gloves for abrasive blasting operations
5.2.1 Determination of the abrasion resistance of glove materials
The abrasion resistance of protective glove materials shall be tested in accordance with EN 388.
If the sample consists of several layers that are not interconnected, a separate test shall be carried out for each individual layer. The classification shall be based on the total of the individual cycles.
5.2.2 Determination of the blade cut resistance of glove materials
The determination of the blade cut resistance of glove materials shall be carried out in accordance with the test method described in EN 388:1 994, 6.2.
5.2.3 Determination of the tear resistance of glove materials
The determination of the tear resistance of glove materials shall be carried out in accordance with the method described in EN 388:1994, 6.3.
5.2.4 Determination of the puncture resistance of glove materials
The determination of the puncture resistance of glove materials shall be carried out in accordance with the method
described in EN 388:1994, 6.4.
5.2.5 Determination of the dexterity of gloves
The determination of the dexterity shall be carried out in accordance with the method described in EN 420:1994, 6.3.
5.3 Test methods for protective clothing for abrasive blasting operations
5.3.1 Pretreatment
Before testing, the clothing material shall be washed five times in a front loading horizontal drum machine using 1 g/l IEC detergent in soft water and finally dried in accordance with the procedures of ISO 6330. Washing shall be carried out by procedure 2A (at (60 ± 3)°C) and drying by procedure E (tumble drying) unless otherwise specified in the care labelling. Materials which are labelled as dry cleanable only shall be dry cleaned five times in accordance with ISO 3175-2.
5.3.2 Dimensions of clothing materials
The testing of the dimensional change of the clothing materials shall be carried out in accordance with EN 340:1 993, 5.3. and 5.4.
5.3.3 Breaking strength of clothing materials
The breaking strength shall be tested in accordance with ISO 1421 for coated materials and EN ISO 13934-1 for wover materials. In the case of difficulties when cutting off the threads at the edges, the test in accordance with EN ISO 13934-1 shall be repeated. The clamp shall move at a rate of (100 ± 10) mm/mm.
5.3.4 Seam strength of clothing materials
The seam strength shall be tested in accordance with EN ISO 13934-2.
5.3.5 Puncture resistance of clothing materials
The puncture resistance of clothing materials shall be tested in accordance with the method described in EN 863.
5.3.6 Tear resistance of clothing materials
The tear resistance of woven clothing materials shall be tested in accordance with EN ISO 13937-2. The tear resistance of coated clothing materials shall be tested in accordance with ISO 4674, method A.2. The clamps shall move at a rate of (100 ± 10) mm/mm.
5.3.7 Resistance of the protective clothing material against abrasives
5.3.7.1 Test Principle
The protective clothing and underwear is put on a test dummy and exposed to the abrasive with a specified
pressure and from a specified distance, thus simulating the exposure of the protective clothing to abrasives.
5.3.7.2 Test apparatus
5.3.7.2.1 Test dummy
A suitable dummy made from smooth material with a Shore A hardness of 90 and a continuous surface.
5.3.7.2.2 Abrasive
Angular steel grit, with a grain size of 0,6 mm to 1,0 mm, which shall be used for no more than two tests.
5.3.7.2.3 Blasting nozzle
A venturi nozzle, in accordance with Figure 1.
NOTE Information on the supply sources of a suitable nozzle can be obtained from the secretariat of CEN/IC 79.
5.3.7.2.4 Supply of compressed air
Positive pressure of 4 bar at the outlet of the nozzle; a continuous flow shall be ensured.
5.3.7.2.5 Undergarment for the test dummy
White undergarment with long sleeves and long legs, made from a rib knitted cotton material with a weight of (160 ± 10) g/m2.
