【正文】 nts, testing, marking. EN 139:1994, Respiratory protective devices — Compressed air line breathing apparatus for use wi th a full face mask, half mask or mouthpiece assembly — Requirements, testing, marking. EN 270:1994, Respiratory protective devices — Compressed air line breathing apparatus incorporating a hood Requirements, testing, marking. EN 340, Protective clothing — General requirements. EN 368, Protective clothing for use against liquid chemicals — Resistance of materials to peration by liquids. EN 3743, Protective gloves against chemicals and microanisms — Part 3: Determination of resistance to permeation by chemicals. 4 Copyright European Committee for Standardizati on Provided by IHS under license with CEN No reproduction or working permitted without license from IHS Not for Resale `,```,``````,`,`,`,` EN 9431:2020 (E) EN 463, Protective clothing for use against liquid chemicals — Determination of resistance to peration by a jet of liquid (Jet Test). EN 464, Protective clothing for use against liquid and gaseous chemicals, including liquid aerosols and solid particles — Determination of leaktightness of gastight suits (Internal Pressure Test). EN 530, Abrasion resistance of protective clothing material. EN 863, Protective clothing — Mechanical Properties — Test Method — Puncture resistance. EN 12021, Respiratory protective devices – Compressed air for breathing apparatus. EN 132744, Respiratory protective devices — Methods of test — Part 4: Flame tests. prCEN ISO TR 11610, Protective clothing – Glossary of terms and definitions (ISO/DIS 11610:1997). EN ISO 6529, Protective clothing — Protection against chemicals — Determination of resistance of protective clothing materials to permeation by liquids and gases (ISO 6529:2020). EN ISO 7854, Rubber or plastics coated fabrics — Determination of resistance to damage by flexing . EN ISO 90734, Textiles — Test methods for nonwovens — Part 4: Determination of tear resistance. EN ISO 139341, Textiles Tensile properties of fabrics Part 1: Determination of maximum force and elongation at maximum force using the strip method (ISO 139341:1999). EN ISO 139352, Textiles – Seam tensile properties of fabrics and madeup textile articles Part 2: Determination of maximum force to seam rupture using the grab method (ISO 139352:1999). EN ISO 139381, Textiles — Bursting properties of fabrics — Part 1: Hydraulic method for determination of bursting strength and bursting distension. 3 Terms and definitions For the purposes of this European Standard the terms and definitions in prCEN ISO TR 11610 apply. 4 Performance requirements Materials Chemical protective clothing materials shall fulfil all the test requirements given in Table 1 when tested in accordance with the test method specified in . Preconditioning and conditioning shall be carried out in accordance with and as required 5 Copyright European Committee for Standardizati on Provided by IHS under license with CEN No reproduction or working permitted without license from IHS Not for Resale `,```,``````,`,`,`,` EN 9431:2020 (E) Table 1 — Minimum performance requirements of chemical protective clothing materials Clause in annex B Performance requirement Performance level Limited Use Re usable Abrasion resistance 3 3 Flex cracking resistance 1 4 Flex cracking at –30 176。C at 95 % relative humidity。 2,5) N the airflow shall not be reduced by more than 5 %. If the hose is permanently distorted after the force is released it shall not be regarded as satisfactory. Test in accordance with of EN 270:1994. One preconditioned suit shall be tested. Internal breathing hose The connections of the internal breathing hose shall withstand a pull test of 50 N both before and after conditioning. Test in accordance with the method described in of EN 270:1994, but using a force of 50 N instead of 1 000 N. Resistance to collapse When tested at a force of (50 177。 3) 176。 gloves, boots or respiratory protective equipment are given in other European Standards. NOTE 2 The performance can be different to that of the material from which it is made, but has to be adequate for the intended use. Strength of joins and assemblages The strength of joins and assemblages between the suit and detachable parts ., between gloves and sleeves, and boots and trouser legs, shall not be less than 100 N when tested in accordance with . 6 Copyright European Committee for Standardizati on Provided by IHS under license with CEN No reproduction or working permitted without license from IHS Not for Resale `,```,``````,`,`,`,` EN 9431:2020 (E) Table 2 — Performance requirements for whole suits 1a 1b 1c 2 5 Requirements for whole suit General ? ? ? ? Conditioning ? ? ? ? Leak tightness ? ? ? Inward leakage ? (1) ? ? Visors General ? ? ? Distortion of vision ? ? ? Field of vision ? ? ? Mechanical strength ? ? ? Facemask ? ? Passthru for use with selfcontained breathing apparatus ? Strength of passthru ? Performance of passthru ? Resistance to kinking ? Air supply system ? ? Couplings ? ? Connections ? ? Connection strength ? ? Breathing hose and ventilating hose ? ? External breathing hose ? ? Resistance to collapse ? ? Internal breathing hose ? ? Resistance to collapse ? ? 7 Copyright European Committee for Sta