EN ISO 11612:2008

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Schutzkleidung - Kleidung zum Schutz gegen Hitze und Flammen (ISO 11612:2008)Vetements de protection - Vetements de protection contre la chaleur et les flammes (ISO 11612:2008)Protective clothing - Clothing to protect against heat and flame (ISO 11612:2008)13.340.10Varovalna oblekaProtective clothingICS:Ta slovenski standard je istoveten z:EN ISO 11612:2008SIST EN ISO 11612:2009en01-februar-2009SIST EN ISO 11612:2009SLOVENSKI
STANDARDSIST EN 531:1996/A1:1999SIST EN 531:19961DGRPHãþD

EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN ISO 11612November 2008ICS 13.340.10Supersedes EN 531:1995
English VersionProtective clothing - Clothing to protect against heat and flame(ISO 11612:2008)Vêtements de protection - Vêtements de protection contrela chaleur et les flammes (ISO 11612:2008)Schutzkleidung - Kleidung zum Schutz gegen Hitze undFlammen (ISO 11612:2008)This European Standard was approved by CEN on 8 October 2008.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the CEN Management Centre or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2008 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN ISO 11612:2008: ESIST EN ISO 11612:2009

Relationship between this International Standard and the Essential Requirements of EU Directive 89/686/EEC.4
Relationship between this International Standard and the Essential Requirements of EU Directive 89/686/EEC This International Standard has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association to provide one means of conforming to Essential Requirements of the New Approach Directive 89/686/EEC on the approximation of the laws of the Member States relating to personal protective equipment. Once this standard is cited in the Official Journal of the European Communities under that Directive and has been implemented as a national standard in at least one Member State, compliance with the normative clauses of this standard given in Table ZA.1 confers, within the limits of the scope of this standard, a presumption of conformity with the corresponding Essential Requirements of that Directive and associated EFTA regulations. Table ZA.1 — Correspondence between this International Standard and Directive 89/686/EEC
Clause(s)/sub-clause(s) of this International Standard Essential Requirements (ERs) of EU Directive 89/686/EEC, Annex II Qualifying remarks/Notes 4.3, 4.5 c) 3.6.1
Protection against heat and/or fire. PPE constituent
materials and other components
4.1, 4.2, 4.4, 4.5 1.2.1
Absence of risks and other ‘inherent' nuisance
factors
5.2 1.4
Information supplied by manufacturer
5.2.3 2.4
PPE subject to ageing
6.2 1.2.1
Absence of risks and other ‘inherent' nuisance
factors
6.3 3.6.1
Protection against heat and fire. PPE constituent
materials and other components
6.4 1.2.1
Absence of risks and other ‘inherent' nuisance
factors
6.5 1.3.2
Lightness and design strength
6.6 a) 3.6.2 Protection against heat and fire. Complete PPE
ready for use
6.6 b) 2.2
PPE ‘enclosing' the parts of the body to be
protected
6.8 1.2.1 Absence of risks and other ‘inherent' nuisance
factors
6.9.2, 6.9.3 1.2.1.1 Suitable constituent materials Partially
Clause(s)/sub-clause(s) of this International Standard Essential Requirements (ERs) of EU Directive 89/686/EEC, Annex II Qualifying remarks/Notes 7.2, 7.3, 7.4, 7.5, 7.6 1.1.2.2
Classes of protection appropriate to different
levels of risk
7.2, 7.3, 7.4, 7.5, 7.6 3.6.1
Protection against heat and fire. PPE
constituent materials and other components Visors not covered 7.2, 7.3, 7.4, 7.5, 7.6 3.6.2
Protection against heat and fire. Complete PPE
ready for use Visors not covered 8 2.12
PPE bearing one or more identification or
recognition marks directly or indirectly relating
to health and safety
9 1.4
Information supplied by the manufacturer
WARNING — Other requirements and other EU Directives may be applicable to the products falling within the scope of this standard.
Reference numberISO 11612:2008(E)© ISO 2008
INTERNATIONAL STANDARD ISO11612Second edition2008-11-01Protective clothing — Clothing to protect against heat and flame Vêtements de protection — Vêtements de protection contre la chaleur et les flammes
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ISO 11612:2008(E) © ISO 2008 – All rights reserved iiiContents Page Foreword.iv Introduction.vi 1 Scope.1 2 Normative references.1 3 Terms and definitions.2 4 Clothing design.4 4.1 General.4 4.2 Sizes.4 4.3 Pockets.5 4.4 Hardware.5 4.5 Additional design requirements for molten splash protective garments.5 5 Sampling and pre-treatment.6 5.1 Sampling.6 5.2 Pre-treatment.6 5.3 Conditioning.6 6 General requirements.6 6.1 General.6 6.2 Heat resistance.7 6.3 Limited flame spread (code letter A1 and/or A2).7 6.4 Dimensional change due to cleaning.8 6.5 Physical requirements.9 6.6 Optional requirement — Resistance to water penetration (code letter W).9 6.7 Ergonomic requirements.9 6.8 Fat content of leather.9 6.9 Innocuousness.10 7 Heat transmission performance requirements.10 7.1 General.10 7.2 Convective heat (code letter B).10 7.3 Radiant heat (code letter C).10 7.4 Molten aluminium splash (code letter D).11 7.5 Molten iron splash (code letter E).11 7.6 Contact heat (code letter F).12 7.7 Optional requirement — Protection against the thermal effects of an electric arc event.12 7.8 Optional test — Whole garment testing for prediction of injury by burns.12 8 Marking.12 9 Information supplied by the manufacturer.13 Annex A (normative)
Mechanical pre-treatment for metallized materials.14 Annex B (informative)
Guidelines for clothing design.16 Annex C (informative)
Prediction of burn injury using an instrumented manikin.17 Annex D (informative)
Checking of basic ergonomic features of protective clothing.19 Annex E (informative)
Risk assessment.21 Annex F (informative)
Protection against the thermal effects of an electric arc event.22 Annex G (informative)
Uncertainty of measurements.23 Bibliography.24 SIST EN ISO 11612:2009

ISO 11612:2008(E) iv © ISO 2008 – All rights reserved Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 11612 was prepared by Technical Committee ISO/TC 94, Personal safety — Protective clothing and equipment, Subcommittee SC 13, Protective clothing. This second edition cancels and replaces the first edition (ISO 11612:1998). It has been prepared in order to: a) introduce the principle of three performance levels for heat transmission performance properties, with the exception of a fourth level for extreme exposure to radiant heat; b) include new terms and definitions; c) include a chapter on clothing design; d) include modifications to pre-treatment, pre-treatment by cleaning and ageing; e) include a heat resistance test as a minimum requirement; f) include a second possible procedure for limited flame spread (code letter A); g) include flame spread requirements for seams; h) modify requirements for dimensional change due to cleaning; i) specify additional requirements for tensile, tear, burst and seam strength; j) include the optional requirements of resistance to water penetration and of water vapour resistance (code letter W); k) include guidance for ergonomic assessment of clothing; l) include requirements for maximum fat content of leather; m) specify requirements for innocuousness; n) change from five to three performance levels for exposure to convective heath (code letter B); SIST EN ISO 11612:2009

ISO 11612:2008(E) © ISO 2008 – All rights reserved vo) readjust the four performance levels for exposure to radiant heat (code letter C) as a consequence of the revision of ISO 6942:1993 to ISO 6942:2002; p) include requirement for protection against contact heat (code letter F); q) include guidance for optional assessment of protection against the thermal effects of an electric arc; r) include optional whole garment testing for prediction of burn injury; s) modify marking requirements; t) replace the clause “Instructions for use” by a new clause “Information supplied by the manufacturer”; u) include an informative annex on guidelines for clothing design; v) include an informative annex on prediction of burn injury using an instrumented manikin; w) include an informative annex on checking of basic ergonomic features of protective clothing; x) include an informative annex on risk assessment; y) include an informative annex on protection against the thermal effects of an electric arc event; z) include an informative annex for uncertainty of measurement. SIST EN ISO 11612:2009

ISO 11612:2008(E) vi © ISO 2008 – All rights reserved Introduction The purpose of this International Standard is to provide minimum performance requirements for clothing to protect against heat and flame, which could be worn for a wide range of end uses. All the other standards listed in the Foreword deal also with clothing to protect against heat and fire, but rather for quite specific products or end uses. Within many of the hazards listed in this International Standard there are three performance levels: ⎯ Level 1 to indicate exposure to perceived low risk; ⎯ Level 2 to indicate exposure to perceived medium risk; ⎯ Level 3 to indicate exposure to perceived high risk. For protection against extreme exposures to radiant heat, there is a fourth performance level to take into account high performance materials such as aluminized and similar materials. The level of personal protection to be provided is based on the outcome of the risk assessment and some comments on risk assessment are given in Annex E.
In this International Standard, an informative annex on ergonomic features (Annex D) is included in the form of guidelines. Suitable tests for these requirements have not yet been validated internationally. For complete protection against exposure to heat and/or flame, it is probable that it will be necessary to protect the head, face, hands and/or feet with suitable PPE and in some cases, appropriate respiratory protection might also be considered necessary. Attention is drawn to CEN Technical Report CEN/TR 14560:2004 [1], which sets out guidelines for selection, use, care and maintenance of protective clothing against heat and flame. Nothing in this International Standard is intended to restrict any jurisdiction, purchaser or manufacturer from exceeding these minimum requirements. It is one of several standards for clothing that have been developed to protect persons against heat and/or flames. Other standards include: ⎯ ISO 11611, Protective clothing for use in welding and allied processes; ⎯ ISO 11613, Protective clothing for firefighters — Laboratory test methods and performance requirements; ⎯ ISO 14460, Protective clothing for automobile racing drivers — Protection against heat and flame — Performance requirements and test methods; ⎯ ISO 15384, Protective clothing for firefighters — Laboratory test methods and performance requirements for wildland firefighting clothing; ⎯ ISO 15538, Protective clothing for firefighters — Laboratory test methods and performance requirements for protective clothing with a reflective outer surface; ⎯ EN 469, Protective clothing for firefighters — Performance requirements for protective clothing for firefighting; ⎯ EN 1486, Protective clothing for fire-fighters — Test methods and requirements for reflective clothing for specialised fire fighting; SIST EN ISO 11612:2009

ISO 11612:2008(E) © ISO 2008 – All rights reserved vii⎯ EN 13911, Protective clothing for firefighters — Requirements and test methods for fire hoods for firefighters; ⎯ EN 15614, Protective clothing for firefighters — Laboratory test methods and performance requirements for wildland clothing.
INTERNATIONAL STANDARD ISO 11612:2008(E) © ISO 2008 – All rights reserved 1Protective clothing — Clothing to protect against heat and flame 1 Scope This International Standard specifies performance requirements for garments made from flexible materials, which are designed to protect the wearer’s body, except the hands, from heat and/or flame. For protection of the wearer’s head and feet, the only items of protective clothing falling within the scope of this International Standard are gaiters, hoods and overboots. However, concerning hoods, requirements for visors and respiratory equipment are not given. The performance requirements set out in this International Standard are applicable to garments which could be worn for a wide range of end uses, where there is a need for clothing with limited flame spread properties and where the user can be exposed to radiant or convective or contact heat or to molten metal splashes. This International Standard is not applicable to protective clothing that is specified by other International Standards, such as for firefighting in structures and for use in welding and allied processes. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 3071, Textiles — Determination of pH of aqueous extract ISO 3376:2002, Leather — Physical and mechanical tests — Determination of tensile strength and percentage extension ISO 3377-1, Leather — Physical and mechanical tests — Determination of tear load — Part 1: Double edge tear ISO 4045, Leather — Chemical tests — Determination of Ph ISO 4048, Leather — Chemical tests — Determination of matter soluble in dichloromethane and free fatty acid content ISO 5077, Textiles — Determination of dimensional change in washing and drying ISO 6942:2002, Protective clothing — Protection against heat and fire — Method of test: Evaluation of materials and material assemblies when exposed to a source of radiant heat ISO 7000, Graphical symbols for use on equipment — Index and synopsis ISO 9151, Protective clothing against heat and flame — Determination of heat transmission on exposure to flame ISO 9185, Protective clothing — Assessment of resistance of materials to molten metal splash ISO/TR 11610, Protective clothing — Vocabulary SIST EN ISO 11612:2009

ISO 11612:2008(E) 2 © ISO 2008 – All rights reserved ISO 12127:1996, Clothing for protection against heat and flame — Determination of contact heat transmission through protective clothing or constituent materials ISO 13506, Protective clothing against heat and flame — Test method for complete garments — Prediction of burn injury using an instrumented manikin ISO 13688, Protective clothing — General requirements ISO 13934-1, Textiles — Tensile properties of fabrics — Part 1: Determination of maximum force and elongation at maximum force using the strip method ISO 13935-2, Textiles — Seam tensile properties of fabrics and made-up textile articles — Part 2: Determination of maximum force to seam rupture using the grab method ISO 13937-2, Textiles — Tear properties of fabrics — Part 2: Determination of tear force of trouser-shaped test specimens (Single tear method) ISO 13938-1, Textiles — Bursting properties of fabrics — Part 1: Hydraulic method for determination of bursting strength and bursting distension ISO 15025, Protective clothing — Protection against heat and flame — Method of test for limited flame spread ISO 17075, Leather — Chemical tests — Determination of chromium(VI) content ISO 17493, Clothing and equipment for protection against heat — Test method for convective heat resistance using a hot air circulating oven EN 343:2003, Protective clothing — Protection against rain 3 Terms and definitions For the purposes of this document, the terms and definitions in ISO/TR 11610 and the following apply. 3.1 ageing changing of the product performance over time during use or storage NOTE Ageing is caused by a combination of several factors, such as: ⎯ cleaning, maintenance or disinfecting processes; ⎯ exposure to visible and/or ultra-violet radiation; ⎯ exposure to high or low temperatures or to changing temperatures; ⎯ exposure to chemicals including humidity; ⎯ exposure to biological agents such as bacteria, fungi, insects or other pests; ⎯ exposure to mechanical action such as abrasion, flexing, pressure and strain; ⎯ exposure to contaminants such as dirt, oil, splashes of molten metal, etc.; ⎯ exposure to wear and tear. 3.2 cleaning process by which a PPE is made again serviceable and/or hygienically wearable by removing any dirt or contamination NOTE A cleaning cycle is typically a washing plus drying or a dry cleaning treatment followed, if required, by ironing or finishing. SIST EN ISO 11612:2009

ISO 11612:2008(E) © ISO 2008 – All rights reserved 33.3 clothing assembly series of outer and under garments to be worn together 3.4 component any material, part or subassembly used in the construction of an item of PPE 3.5 component assembly combination of all materials of a multi-layer garment presented exactly as the finished garment construction 3.6 conditioning keeping samples under standard conditions of temperature and relative humidity for a minimum period of time 3.7 gaiter removable covering intended to protect the part of the leg below the knee and may cover the shoes 3.8 garment single item of clothing, which may consist of single or multiple layers NOTE In this International Standard, where a garment or garments are referred to, this is intended also to include hoods, gaiters and overboots as appropriate. 3.9 hardware non-fabric items forming part of or optional extras in a garment EXAMPLE Metal or plastic buttons or fasteners etc. 3.10 hood Item of PPE made from flexible material, which covers the head and neck 3.11 innermost lining innermost face of a component assembly closest to the wearer’s skin NOTE Where the innermost lining forms part of a material combination, the material combination is regarded as the innermost lining. 3.12 interlining layer between the outermost layer and the innermost lining in a multilayer garment 3.13 material flexible substance/substances of which the item of clothing is made 3.14 outer material outermost material of which the item of clothing is made 3.15 overboots single or multiple layers of material covering the footwear to provide protection against heat and/or flame NOTE Certain types of overboot used for this purpose can also cover parts of the legs and/or ankles. SIST EN ISO 11612:2009

ISO 11612:2008(E) 4 © ISO 2008 – All rights reserved 3.16 patch pocket pocket located on the exterior of a protective garment, which is stitched as a patch over the outer layer of the protective garment 3.17 pre-treatment standard way of preparing the samples before testing NOTE This might include a number of cleaning cycles, submitting the sample to heat, mechanical action or any other relevant exposure and is finished by conditioning. 3.18 seam any method of permanent fastening between two or more pieces of material 3.18.1 main seams seams that are necessary for the integrity of the garment 3.18.2 overlapping seam seam where all or part of one or more layers of material covers the other layer or layers causing a ridge 4 Clothing design 4.1 General General requirements which are not specifically covered in this International Standard shall be in accordance with ISO 13688. Where more than one garment is needed to meet the requirements of this International Standard, each garment shall be labelled to ensure that the correct combination is used. 4.2 Sizes 4.2.1 General Garment sizes shall be in accordance with the requirements of ISO 13688. 4.2.2 Suits Heat and flame protective suits shall completely cover the upper and lower torso, neck, arms and legs. Suits shall consist of: ⎯ a single garment, e.g. an overall or boiler suit or ⎯ a two-piece garment, consisting of a jacket and a pair of trousers. Jackets shall be of sufficient length to overlap by a minimum of 20 cm with the top of the trousers. This minimum overlap shall be maintained in all positions and in movements expected during use. Conformity shall be checked by visual inspection, including an assessment of fit and practical testing, such as physical measurement of the overlap in all positions and movements normally encountered during use, when a suit of appropriate size is donned by a wearer. SIST EN ISO 11612:2009

ISO 11612:2008(E) © ISO 2008 – All rights reserved 54.2.3 Additional protective clothing Heat and flame protective garments other than suits in accordance with 4.2.2 may be designed to provide protection for specific parts of the body, e.g. neck curtain, hoods, sleeves, apron and gaiters. They are typically designed to be worn in addition to a suit in accordance with 4.2.2. Performance testing of partial protective garments shall be carried out on complete clothing assemblies. Additional protective clothing such as hoods, sleeves, apron and gaiters shall cover the intended areas if worn with a suit of appropriate size and shall also meet the requirements of this International Standard. Conformity shall be checked by visual inspection including an assessment of fit and physical measuring when the appropriate size of a complete clothing assembly is donned by a wearer. 4.3 Pockets Where garments are constructed with pockets, the pockets shall be made of material(s) conforming to 6.3. 4.4 Hardware Hardware penetrating the outer material of a heat and flame protective garment or garment assembly shall not be exposed to the innermost surface of the garment or the garment assembly.
Conformity shall be checked by visual inspection. 4.5 Additional design requirements for molten splash protective garments Garments that are designed to protect against the risk of exposure to molten metal splash by meeting the performance requirements designated by code letters D and E, shall have the following additional design features. a) The sleeves of jackets and coveralls and the lower leg regions of trousers, coveralls and bib + brace shall not have turn-ups. b) External pockets on jackets, trousers, coveralls and bib + brace, other than side pockets below the waist which do not extend more than 10° forward of the side seam, shall be covered by flaps at least 20 mm wider than the opening of the pocket in order to prevent the flap from being tucked into the pocket. c) Patch pockets shall be made from materials meeting the same protection indices (chosen from A to F) and the same levels for these indices as the rest of the garment. d) Overlapping seams on the outside of the garment shall be downward facing and secured in this position. e) Closures shall be designed with a protective cover flap on the outside of the garment. The maximum distance between buttonholes shall be 150 mm. If zippers are used, the slide fastener shall be designed to lock when completely closed. Cuffs may be provided with closures to reduce their width. The closure and any fold which it creates shall be on the underside of the cuff. Neck openings shall be provided with closures. Trousers may have side slits which shall have a means of closure and the slit and closure shall be covered. Conformity to a), b), d) and e) shall be checked by visual inspection; conformity to c) by visual inspection and physical measurement. NOTE Further guidance on design of clothing to protect against these risks is given in Annex B. SIST EN ISO 11612:2009

ISO 11612:2008(E) 6 © ISO 2008 – All rights reserved 5 Sampling and pre-treatment 5.1 Sampling The number of samples and the size of the specimens of garment materials, or garments presented to the different test methods, shall be in accordance with the respective test standards specified in the requirements. Samples shall be representative of the component assembly, exactly as used in the finished garment. Samples for testing shall be taken from the original garment or they may also be cut from the material or materials as used in the component assembly. 5.2 Pre-treatment 5.2.1 Pre-treatment by cleaning Before each test specified in Clauses 6 and 7, except 6.8, 6.9.2 and 6.9.3, the test materials and test specimens shall be pre-treated by cleaning, if the manufacturer’s instructions indicate that cleaning is allowed. In addition, 6.3 requires that the limited flame spread tests shall be carried out both before the pre-treatment and after the pre-treatment, if cleaning is allowed. The cleaning shall be in line with the manufacturer’s instructions, on the basis of standardized processes. If the number of cleaning cycles is not specified, five cleaning cycles shall be performed. This shall be reflected in the information supplied by the manufacturer. NOTE 1 Manufacturer’s instructions typically indicate one or several of the various methods and processes of ISO 6330, ISO 15797 or equivalent as standardized processes for cleaning. Tests specified in 6.8 and 6.9 shall be carried out in the new state (as received). NOTE 2 Leather and metallized materials are usually not pre-treated by cleaning prior to other tests, as the manufacturer’s instructions usually indicate that cleaning is not allowed. 5.2.2 Mechanical pre-treatment Metallized materials shall be pre-treated in accordance with Annex A before being submitted to radiant heat testing (see 7.3). 5.2.3 Ageing Performance tests described in 6.3 have also to be executed after the maximum number of cleaning procedures indicated by the manufacturer. 5.3 Conditioning Specimens other than leather shall be conditioned for at least 24 h in an atmosphere having a temperature of (20 ± 2) °C and a relative humidity of (65 ± 5) %. Leather specimens shall be conditioned for at least 48 h in an atmosphere having a temperature of (20 ± 2) °C and a relative humidity of (65 ± 5) %. Testing shall be carried out within 5 min of removal from this atmosphere. 6 General requirements 6.1 General Protective garments that comply with this International Standard shall meet the requirements of this clause, with the exception of the requirements of 6.2.2 and 6.6, which are optional, and shall meet one or more of the requirements of Clause 7. Such garments shall be marked in accordance with Clause 8. SIST EN ISO 11612:2009

ISO 11612:2008(E) © ISO 2008 – All rights reserved 76.2 Heat resistance 6.2.1 Heat resistance at a temperature of (180 ± 5) °C When tested in accordance with ISO 17493 at a temperature of (180 ± 5) °C, all fabrics and hardware used in the garment and/or clothing assembly shall not ignite or melt and shall not shrink by more than 5 %. 6.2.2 Optional requirement — Heat resistance at a temperature of (260 ± 5) °C If it is intended that the material of a single layer garment or of the innermost lining of a multilayer garment shall be worn next to the skin, the material shall be tested according to ISO 17493 at a temperature of (260 ± 5) °C. The material shall not ignite or melt and shall not shrink by more than 10 %, in addition to meeting the requirement of 6.2.1. NOTE Heat shrinkage has the potential to reduce the thermal protection level of the garment as it reduces the insulating air pocket between the garment and the body. Therefore heat shrinkage in heat and flame protective garments has to be avoided, especially in cases where a heat or flame hazard exists that could hit a large percentage area of the garment. 6.3 Limited flame spread (code letter A1 and/or A2) 6.3.1 General Testing of materials and seams shall take place in accordance with ISO 15025:2000, either Procedure A (code letter A1) or Procedure B (code letter A2) or both in accordance with the existent risk during the foreseen use. This test shall be carried out both before and after the pre-treatment specified in Clause 5. Testing according to Procedure A shall also be carried out on hardware and on materials, which are applied to the outermost surface of a heat and flame protective garment. 6.3.2 Testing in accordance with ISO 15025:2000, Procedure A (code letter A1) 6.3.2.1 When tested in accordance with ISO 15025:2000, Procedure A, specimens from single layer garments, including seams, shall meet the following requirements: a) no specimen shall suffer flaming to the top or either side edge; b) no specimen shall suffer hole formation; c) no specimen shall melt or suffer flaming or molten debris; d) the mean value of afterflame time shall be u 2 s; e) the mean value of afterglow time shall be u 2 s. A glowing inside the charred area is defined in ISO 15025 as afterglow without combustion and for the purpose of this clause is not regarded as afterglow. For seams, three specimens containing a structural seam shall be tested in accordance with ISO 15025:2000, Procedure A. Specimens shall be oriented with the seam running up the centreline of the test specimen so that the burner flame impinges directly upon it. The seams shall remain intact. 6.3.2.2 If the garment is multilayer, specimens of the component assembly including seams shall be tested both by applying the flame to the surface of the outer material of the garment and to the innermost lining of the garment and shall meet the requirements of 6.3.2.1, including that no specimen shall suffer hole formation except for an interlining that is used for specific protection other than heat protection, for example liquid penetration. SIST EN ISO 11612:2009

ISO 11612:2008(E) 8 © ISO 2008 – All rights reserved 6.3.2.3 Hardware [e.g. touch and close (hook and pile) fasteners, etc.], whether it is exposed or covered when all closure systems in the garment are in the closed position, shall be tested separately by applying the test flame to the outer surface of the component assembly containing hardware exactly as designed in the garment. The hardware shall remain functional after the test. 6.3.2.4 Labels, badges, retro-reflective materials, etc., which are applied to the outermost surface of the garment, shall be tested in combination with the outer layer to make it possible to take samples with the dimensions as indicated in ISO 15025. They shall be tested by applying the flame to the outer surface of the items. They shall have the same flammability behaviour as the outer layer of the garment. 6.3.3 Testing in accordance with ISO 15025:2000, Procedure B (code letter A2) 6.3.3.1 When tested in accordance with ISO 15025:2000, Procedure B, hemmed specimens from single layer garments shall meet the following requirements: a) no specimen shall suffer flaming at the top or either side edge; b) no specimen shall melt or suffer flaming or molten debris; c) the mean value of after flame time shall be u 2 s; d) the mean value of afterglow time shall be u 2 s. Glowing inside the charred area is defined in ISO 15025 as afterglow without combustion and for the purpose of this clause is not regarded as afterglow. For seams, three hemmed specimens containing a structural seam shall be tested in accordance with ISO 15025:2000, Procedure B. Specimens shall be oriented with the seam running up the centreline of the test specimen so that the burner flame impinges directly upon it. The seams shall remain intact. 6.3.3.2 The hemmed fabric specimen shall be prepared in the same manner as used in the construction of the clothing. 6.3.3.3 If the garment is multilayer, hemmed specimens of the component assembly including seams shall be tested by applying the flame to the edge of the multilayer assembly and shall meet the requirements of 6.3.3.1. 6.4 Dimensional change due to cleaning 6.4.1 General The requirements of 6.4 do not apply to garments intended for single use only, to garments that cannot be washed or dry-cleaned, or to leather. 6.4.2 After pre-treatment as specified in 5.2.1 6.4.2.1 The change in dimensions of woven, non-woven and sheet materials shall be measured in accordance with ISO 5077 and shall not exceed 3 % in either length or width direction. 6.4.2.2 The change of dimensions of knitted materials shall be measured in accordance with ISO 5077 and shall not exceed 5 % shrinkage. Shrinkage shall be measured after the specimen has been uncreased and flattened on a plane surface. SIST EN ISO 11612:2009

ISO 11612:2008(E) © ISO 2008 – All rights reserved 96.5 Physical requirements 6.5.1 Tensile strength 6.5.1.1 When tested in accordance with ISO 13934-1, the tensile strength of the outer material, except leather and knitted materials, shall be minimum of 300 N in both the machine and cross directions. 6.5.1.2 When tested in accordance with ISO 3376, the tensile strength of leather outer material shall be a minimum of 60 N in two directions at right angles when the standard test specimen defined in Table 1 of ISO 3376:2002 is used. 6.5.2 Tear strength 6.5.2.1 When tested in accordance with ISO 13937-2, the tear strength of the outer material, except leather and knitted materials, shall be a minimum of 15 N in both the machine and cross directions. 6.5.2.2 When tested in accordance with ISO 3377-1, the tear strength of leather outer material shall be a minimum of 20 N in two directions at right angles in the plane of the material. 6.5.3 Burst strength for knitted materials When tested in accordance with ISO 13938-1, the burst strength of knitted outer material shall be a minimum 200 kPa. 6.5.4 Seam strength When tested in accordance with ISO 13935-2, the seam strength of the outer material or outer garment material of the clothing assembly shall give a breaking load of at least 225 N for woven textiles and 110 N for leather. 6.6 Optional requirement — Resistance to water penetration (code letter W) If, according to the use foreseen for the product, the manufacturer determines a requirement for resistance to water penetration, the garment shall be tested and classified to both resistance to water penetration and water vapour resistance, and shall comply with the following requirements: a) resistance to water penetration provided by the garment shall be tested and classified in accordance with EN 343; b) water-vapour resistance provided by the garment shall be tested and classified in accordance with EN 343. Garments that have been tested to this subclause shall be marked as specified in 8.4. 6.7 Ergonomic requirements Ergonomic assessment of clothing covered by this International Standard should be carried
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