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1、BRITISH STANDARD BS 8428:2004 Incorporating Corrigendum No. 1 Protective clothing Protection against liquid chemicals Performance requirements for chemical protective suits with liquid-tight connections between different parts of the clothing for emergency teams (type 3-ET equipment) ICS 13.340.10 ?
2、 Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 00:58:42 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 8428:2004 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 January 2004 BSI 9 February 2004 The fo
3、llowing BSI references relate to the work on this British Standard: Committee reference PH/3/3 Draft for comment 02/562256 DC ISBN 0 580 43184 3 Committees responsible for this British Standard The preparation of this British Standard was entrusted to Technical Committee PH/3, Protective clothing, t
4、o Subcommittee PH/3/3, Clothing for protection against chemicals, upon which the following bodies were represented: British Clothing Industry Association British Safety Industry Federation Test and Certification Association Chief and Assistant Chief Fire Officers Association Chemical Industries Asso
5、ciation Fire Brigades Union Health and Safety Executive Institute of Occupational Medicine Institution of Occupational Safety and Health London Fire and Emergency Planning Authority NHS Purchasing and Supply Agency Office of the Deputy Prime Minister (Her Majestys Fire Services Inspectorate) Persona
6、l Safety Manufacturers Association SATRA Technology Centre Textile Services Association Limited Co-opted members Amendments issued since publication Amd. No.DateComments 15007 Corrigendum No. 1 9 February 2004 Correction to title on front cover Licensed Copy: London South Bank University, London Sou
7、th Bank University, Fri Dec 08 00:58:42 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 8428:2004 BSI 9 February 2004 i Contents Page Committee responsibleInside front cover Foreword ii 1Scope1 2Normative references1 3Terms and definitions1 4Materials2 5Suit components3 6Seams, joins and assemblages4
8、7The whole suit5 8Marking6 9Information supplied by the manufacturer6 Bibliography9 Table 1 Performance classes for chemical protective suit materials2 Table 2 Test chemicals for permeation tests and their generic representation3 Licensed Copy: London South Bank University, London South Bank Univers
9、ity, Fri Dec 08 00:58:42 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 8428:2004 ii BSI 9 February 2004 Foreword This British Standard has been prepared by Subcommittee PH/3/3. This British Standard is to be used in conjunction with BS EN 943 which specifies requirements for protective clothing agai
10、nst liquid and gaseous chemicals. This British Standard is also to be used in conjunction with BS 7184 which gives guidance on the use and maintenance of chemical protective clothing. NOTEBS 7184 references prEN 466-2 as specifying requirements for liquid-tight chemical protective suits for emergenc
11、y teams. However, prEN 466-2 is no longer being developed for publication as a European Standard and so reference should be made to this British Standard, BS 8428, instead. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct
12、application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, pages 1 to 9 and a back cover. The BSI copyright notice displayed in this document indicates when
13、the document was last issued. Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 00:58:42 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 8428:2004 BSI 9 February 2004 1 1 Scope This standard specifies performance requirements for chemical protective suits with liqui
14、d-tight connections between different parts of the clothing for use by emergency teams, e.g. fire brigades, in situations where the chemical hazards are not immediately identifiable. This standard specifies performance requirements for both the materials of construction of the chemical protective su
15、it and for the suit as a whole, including component parts, seams, joins and assemblages. This standard is applicable to reusable and limited-use chemical protective suits. Chemical protective clothing conforming to this standard is not designed to provide protection against gases and vapours. Perfor
16、mance requirements for gas-tight chemical protective suits for emergency teams are given in BS EN 943-2. NOTESuits conforming to this standard can be suitable for use in situations other than those involving purely chemicals, e.g. situations involving infective agents and radioactive contamination.
17、Information supplied by suit manufacturers can indicate such additional performance applications. The chemical protection suits specified in this standard are designed to be used with respiratory protective devices. However, this standard does not specify requirements for respiratory protective devi
18、ces. 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. BS EN 340, Protective
19、 clothing General requirements. BS EN 345-2:1997, Safety footwear for professional use Part 2: Additional specifications. BS EN 374-1, Protective gloves against chemicals and micro-organisms Part 1: Terminology and performance requirements. BS EN 463, Protective clothing Protection against liquid ch
20、emicals Test method: Determination of resistance to penetration by a jet of liquid (Jet test). BS EN 943-1:2002, Protective clothing against liquid and gaseous chemicals, including liquid aerosols and solid particles Part 1: Performance requirements for ventilated and non-ventilated “gas-tight” (Typ
21、e 1) and “non-gas-tight” chemical protective suits. BS EN 943-2:2002, Protective clothing against liquid and gaseous chemicals, including liquid aerosols and solid particles Part 2: Performance requirements for “gas-tight” (Type 1) chemical protective suits for emergency teams (ET). PD CEN ISO/TR 11
22、610, Protective clothing Glossary of terms and conditions.1) 3 Terms and definitions For the purposes of this British Standard, the terms and definitions given in PD CEN ISO/TR 116101), BS EN 943-2 and the following apply. 3.1 type 3-ET suit liquid tight chemical protective suit for use by emergency
23、 teams (ET) 3.2 type 3a-ET suit type 3-ET suit with a breathable air supply independent of the ambient atmosphere and worn inside the suit NOTEFor example, when a self-contained open-circuit compressed air breathing apparatus is worn inside a type 3-ET suit, it is considered a type 3a-ET suit. 1) In
24、 preparation. Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 00:58:42 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 8428:2004 2 BSI 9 February 2004 3.3 type 3b-ET suit type 3-ET suit with a breathable air supply worn outside the suit NOTEFor example, when a sel
25、f-contained open circuit compressed air breathing apparatus is worn outside a type 3-ET suit, it is considered a type 3b-ET suit. 3.4 bootee sock-like extension of the chemical protective suit leg that covers the entire foot NOTEA bootee can be internal or external to any footwear worn. 3.5 exhaust
26、assembly device that enables exhaled air to be vented from a chemical protective suit to the atmosphere to prevent over-pressure within the suit NOTEAn exhaust assembly can consist of one or more exhalation valves. 3.6 personal line length of cord fitted to breathing apparatus sets or chemical prote
27、ctive suits with the purpose of preventing team members from getting separated from each other or lost in conditions of limited visibility NOTEFor example, the line can be used to join one or more team members together or to join several team members to a fixed guide line. 4 Materials 4.1 General Ma
28、terials used in the construction of type 3-ET suits shall not be known to cause skin irritation or have any adverse effect to health. NOTEThe materials used in the construction of type 3-ET suits should be as light and as flexible as possible in order to ensure wearer comfort as well as providing ef
29、fective protection. 4.2 Mechanical properties Following pre-conditioning and conditioning in accordance with BS EN 943-1:2002, B.2.1 and B.2.2, type 3-ET suit material shall be tested and classified in accordance with BS EN 943-1 for the mechanical properties specified in Table 1. NOTE 1Limited-use
30、type 3-ET suits are not intended to be used repeatedly, therefore the performance classes specified in Table 1 to demonstrate the durability of limited-use type 3-ET suit material are in some instances different to those specified for type 3-ET suit material intended for repeated use. NOTE 2If only
31、class 2 is achieved for puncture resistance, the type 3-ET suit can be unsuitable for use where there is a high risk of puncture. Table 1 Performance classes for chemical protective suit materials PropertyBS EN 943-1:2002 subclause that specifies the test Performance class as defined in BS EN 943-1:
32、2002 Limited-use suitsReusable suits Abrasion resistanceB.2.3Class 4Class 6 Flex cracking resistanceB.2.4Class 1Class 4 Flex cracking resistance at low temperatures (30 C) B.2.5Class 2Class 2 Trapezoidal tear resistanceB.2.6Class 3Class 3 Tensile StrengthB.2.8Class 4Class 6 Puncture resistanceB.2.9C
33、lass 2Class 3 Resistance to flameB.2.14Class 1Class 3 Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 00:58:42 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 8428:2004 BSI 9 February 2004 3 4.3 Chemical permeation Following pre-conditioning and conditioning in ac
34、cordance with BS EN 943-1:2002, B.2.1 and B.2.2, the chemical permeation resistance of type 3-ET suit material shall be tested and classified in accordance with BS EN 943-1:2002, B.2.10 for each of the liquid and gaseous standard test chemicals specified in Table 2. If the type 3-ET suit material on
35、ly achieves class 2 or lower after testing with a chemical in accordance with BS EN 943-1:2002, B.2.10, the chemical suit material shall be unsuitable for use with this chemical under continuous exposure. NOTE 1 The list of permeation test chemicals specified in Table 2 is not inclusive of all the c
36、hemicals for which the type 3-ET suit may be used. NOTE 2 The standard test chemicals in Table 2 are representative of a number of different groups of chemicals regardless of their physical state (i.e. their generic representation). However, acceptable permeation performance of a type 3-ET suit mate
37、rial against chemicals, other than those listed, in no way implies that the design of a type 3-ET suit is adequate protection against that chemical. Such a chemical should be tested and classified on an individual basis in accordance with BS EN 943-1:2002, B.2.10. NOTE 3 Despite obtaining favourable
38、 permeation performance results, exposure of the type 3-ET suit material to a given chemical or chemicals can result in significant chemical permeation into that material. After operational use, the user should ascertain whether permeation has occurred and, if so, whether such permeation either pres
39、ents a hazard to subsequent wearers or compromises the future level of protection afforded by the material. Table 2 Test chemicals for permeation tests and their generic representation 5 Suit components 5.1 General Following pre-conditioning and conditioning in accordance with BS EN 943-1:2002, B.2.
40、1 and B.2.2, the type 3-ET suit components specified in 5.2 to 5.7 shall be tested and classified for resistance to chemical permeation in accordance with 4.3. For safety footwear, the test specimen for chemical permeation testing shall be taken from the thinnest point of the footwear above the join
41、 to the sole. 5.2 Protective gloves Permanently fitted or detachable protective gloves shall conform to BS EN 374-1. NOTEAs BS EN 374-1 specifies only very limited mechanical and thermal requirements for protective gloves, an over-glove, e.g. conforming to BS EN 659, can be used to provide greater m
42、echanical and thermal protection. Test chemicalPhysical stateGeneric representation DichloromethaneLiquidChlorinated hydrocarbon MethanolLiquidPrimary alcohol n-HeptaneLiquidSaturated hydrocarbon TolueneLiquidAromatic hydrocarbon DiethylamineLiquidAmine Sodium hydroxide 40 %LiquidInorganic base Sulf
43、uric acid 96 %LiquidInorganic mineral acid AmmoniaGasBasic gas ChlorineGasHalogen gas Hydrogen chlorideGasInorganic gas AcetoneLiquidKetone AcetonitrileLiquidNitrile compound Ethyl acetateLiquidEster Carbon disulfideLiquidSulfur containing organic compound TetrahydrofuranLiquidHeterocyclic and ether
44、 compound Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 00:58:42 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 8428:2004 4 BSI 9 February 2004 5.3 Safety footwear Permanently fitted or detachable safety footwear, including external bootee supplied by the manuf
45、acturer shall conform to safety footwear type FPA as specified in BS EN 345-2:1997, Clause 7. An integral sock or integral bootee shall provide at least the same level of protection as the material from which the type 3-ET suit is manufactured, i.e. as a minimum the integral sock or integral bootee
46、shall conform to Clause 4. 5.4 Visor Where a visor is fitted as part of the type 3-ET suit, it shall conform to BS EN 943-1:2002, 5.5. NOTEA visor is not the same as a facemask integral to, attached permanently to or detachable from a type 3-ET suit. If there is any visual indication of the visor di
47、storting vision after being tested in accordance with 4.3, the visor shall be tested in accordance with BS EN 943-2:2002, 8.2. The visor shall not distort vision when exposed to each of the chemicals listed in Table 2. 5.5 Facemask Where a facemask is integral to, attached permanently to or detachab
48、le from the type 3-ET suit, it shall conform to BS EN 943-1:2002, 5.6. 5.6 Exhaust assembly A type 3a-ET suit shall be fitted with an exhaust assembly. A type 3b-ET suit shall be fitted with an exhaust assembly if the exhalation valve of the respiratory protective equipment is not free to discharge
49、directly into the atmosphere, or where supplementary air for ventilation is supplied to the chemical protection suit. NOTEThe exhaust assembly fitted to a type 3-ET suit may consist of one or more exhaust valves. 5.7 Pass-through for use with self-contained breathing apparatus Where a pass-through is fitted as part of the type 3-ET suit, it shall conform to BS EN 943-1:2002, 5.7. NOTEAs type 3-ET suits are intended for use in emergency situations, the inclusion of a pass-through
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