1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN 421:2010Protective gloves againstionizing radiation andradioactive contaminationBS EN 421:2010 BRITISH STANDARDNational forewordThis British Standard is the UK implementati
2、on of EN 421:2010. Itsupersedes BS EN 421:1994 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee PH/3/8, Protective gloves.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport t
3、o include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. BSI 2010ISBN 978 0 580 59690 2ICS 13.280; 13.340.40Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStan
4、dards Policy and Strategy Committee on 31 August 2010Amendments issued since publicationDate Text affectedBS EN 421:2010EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 421 May 2010 ICS 13.280; 13.340.40 Supersedes EN 421:1994English Version Protective gloves against ionizing radiation and radio
5、active contamination Gants de protection contre les rayonnements ionisants et la contamination radioactive Schutzhandschuhe gegen ionisierende Strahlung und radioaktive Kontamination This European Standard was approved by CEN on 22 April 2010. CEN members are bound to comply with the CEN/CENELEC Int
6、ernal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN Management Centre or to any CEN me
7、mber. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as the official versions. CEN mem
8、bers are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, 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
9、, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2010 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Mem
10、bers. Ref. No. EN 421:2010: EBS EN 421:2010EN 421:2010 (E) 2 Contents Page Foreword 41 Scope 52 Normative references 53 Terms and definitions .54 Requirements .64.1 General 64.2 Design principles .74.2.1 General principles74.2.2 Glove sizing and dimensions .74.3 Attenuation efficiency and uniformity
11、 of distribution of protective material 74.4 Glove integrity 84.5 Mechanical requirements 84.6 Chemical requirements .84.7 Specific requirements for gloves for containment enclosures 84.7.1 General requirement for gloves for containment enclosures .84.7.2 Design for gloves for containment enclosures
12、 94.7.3 Specific integrity test for gloves for containment enclosures 94.7.4 Resistance to ozone cracking (static strain) 95 Test methods . 105.1 Determination of lead equivalent thickness and uniformity of distribution . 105.1.1 Introduction . 105.1.2 Sampling 105.1.3 Test conditions . 105.1.4 Expr
13、ession of results . 115.1.5 Detection with an X-ray film . 115.1.6 Detection with numeric films . 125.1.7 Detection with an ionising chamber . 125.2 Determination of glove integrity, air leak test 135.2.1 Principle . 135.2.2 Sampling 135.2.3 Test apparatus 135.2.4 Test procedure 145.2.5 Test report
14、. 145.3 Determination of resistance to ozone cracking (Static Strain Method) 145.3.1 Procedure 145.3.2 Test conditions . 155.3.3 Sampling 155.3.4 Reporting of results 155.4 Pull test for assemblages (sleeve and glove) 156 Marking 157 Information supplied by the manufacturer 16Annex A (informative) D
15、etermination of water vapour permeability . 17A.1 Requirement for water vapour permeability 17A.2 Test method . 17A.2.1 Principle . 17A.2.2 Apparatus and materials 17A.2.3 Sampling 19A.2.4 Procedure 19A.2.5 Report, calculation and result . 20BS EN 421:2010EN 421:2010 (E) 3 Annex B (informative) Warn
16、ing . 21B.1 General . 21B.2 Special tests: Chemical resistance . 21B.3 Special tests: Radiation resistance . 21Annex C (informative) Uncertainty of measurement and results interpretation 23Annex D (informative) Significant technical changes between this European Standard and the previous edition . 2
17、5Annex ZA (informative) Relationship between this European Standard and the Essential Requirements of EU Directive 89/686/EEC . 26Bibliography 27Figures Figure 1 Examples of glove integrity test apparatus for the air leak test 14Figure 2 Pictogram ISO 7000 2484 Protection against particulate radioac
18、tive contamination . 15Figure 3 Pictogram ISO 7000 2809 Protection against ionizing radiation . 16Figure A.1 Diagram of dishes and templates (water vapour permeability test) 18Figure C.1 Result pass 23Figure C.2 Result fail . 23Figure C.3 Result fail . 24BS EN 421:2010EN 421:2010 (E) 4 Foreword This
19、 document (EN 421:2010) has been prepared by Technical Committee CEN/TC 162 “Protective clothing including hand and arm protection and lifejackets”, the secretariat of which is held by DIN. This European Standard shall be given the status of a national standard, either by publication of an identical
20、 text or by endorsement, at the latest by November 2010, and conflicting national standards shall be withdrawn at the latest by November 2010. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held re
21、sponsible for identifying any or all such patent rights. This document supersedes EN 421:1994. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of EU Directive(s). For relationship wit
22、h EU Directive(s), see informative Annex ZA, which is an integral part of this document. Annex D provides details of significant technical changes between this European Standard and the previous edition EN 421:1994. According to the CEN/CENELEC Internal Regulations, the national standards organizati
23、ons of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal
24、, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. BS EN 421:2010EN 421:2010 (E) 5 1 Scope This European Standard specifies requirements and test methods for gloves to protect against ionizing radiation and radioactive contamination. The standard is applicable to glove
25、s offering protection to the hand and various parts of the arm and shoulder. It applies also to gloves to be mounted in permanent containment enclosures. This European Standard also applies to intermediary sleeves used between a glove and a permanent containment enclosure (report to 4.7.2.3). The re
26、quirements of this European Standard do not apply to protective gloves against X-ray radiation. 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 e
27、dition of the referenced document (including any amendments) applies. EN 374-1:2003, Protective gloves against chemicals and micro-organisms Part 1: Terminology and performance requirements EN 374-3, Protective gloves against chemicals and micro-organisms Part 3: Determination of resistance to perme
28、ation by chemicals EN 388:2003, Protective gloves against mechanical risks EN 420:2003+A1:2009, Protective gloves General requirements and test methods EN 61331-1:2002, Protective devices against diagnostic medical X-radiation Part 1: Determination of attenuation properties of materials (IEC 61331-1
29、:1994) ISO 1431-1, Rubber, vulcanised or thermoplastic Resistance to ozone cracking Part 1: Static and dynamic strain testing ISO 7000:2004, Graphical symbols for use on equipment Index and synopsis ISO 11933-1, Components for containment enclosures Part 1: Glove/bag ports, bungs for glove/bag ports
30、, enclosure rings and interchangeable units ISO 11933-2, Components for containment enclosures Part 2: Gloves, welded bags, gaiters for remote - handling tongs and for manipulators CEN ISO/TR 11610:2004, Protective clothing Vocabulary (ISO/TR 11610:2004) 3 Terms and definitions For the purposes of t
31、his document, the terms and definitions given in CEN ISO/TR 11610:2004 and the following apply. 3.1 radioactive contamination presence of radioactive substances in or on a material or in a place where they are undesirable or could be harmful BS EN 421:2010EN 421:2010 (E) 6 3.2 ionizing radiation rad
32、iation constituted by particles directly or indirectly ionizing (photons included) or by a mixture of both 3.3 irradiation exposure of a living being or matter to ionizing radiation by external sources (X, Alpha, Beta, Gamma or Neutron radiations) 3.4 water vapour permeability weight of water vapour
33、 in grams transmitted through a material per square metre per 24 h time, under specified conditions of temperature and humidity (gm-2d-1) 3.5 containment enclosure enclosure that prevent from the spreading of products contained in the inside medium towards the outside medium, or the penetration of o
34、utside atmosphere towards the inside medium or both 3.6 glove box containment enclosure in which material or products can be manipulated being isolated from the operator, which is realized thanks to gloves fixed in a tightness way to openings that are designed in walls of the enclosure (glove port o
35、r cell ring) 3.7 glove for glove box or for containment enclosure glove with a long cuff constituted in flexible elastomeric material, intended to enable a tight clamping on the circumference or the extremity of a glove port or on any other component and enabling at the same time a good mechanical r
36、esistance 3.8 glove port cylindrical collar fitted with a bead or a groove, fixed on the wall of a glove box or a containment enclosure in order to receive a glove or any other flexible accessory finished with a bead of same diameter 3.9 cell ring sectional ring in plastic or metal fixed on the encl
37、osure, that receive interchangeable tightness accessories by pushing and which can be replaced without breaking the containment 3.10 support ring interchangeable tightness ring, in metallic alloy or plastic, fitted with grooves, fixed on a cell ring and equipped with a glove or other plastic compone
38、nt, finished by a bead, a toric joint or a lip joint of same diameter 3.11 protective glove material material or combination of materials used in a glove for the purpose of preventing the user from direct contact with radioactive contamination or of minimizing the radiation dose to the user from ext
39、ernal radiation sources 4 Requirements 4.1 General Table 1 gives the requirements for gloves and gloves for containment enclosures for protection against radioactive contamination and protection against ionizing radiation. BS EN 421:2010EN 421:2010 (E) 7 Table 1 Requirements for gloves and gloves fo
40、r containment enclosures Gloves Gloves for containment enclosures Protection against radioactive contamination Protection against radioactive contamination and protection against ionizing radiation Protection against radioactive contamination Protection against radioactive contamination and protecti
41、on against ionizing radiation Requirements 4.2.1 X X X X 4.2.2 X X 4.3 X X 4.4 X X 4.5 X X X X 4.6 4.7.2 X X 4.7.3 X X 4.7.4 : optional requirement : mandatory if the gloves are used in an atmosphere containing ozone 4.2 Design principles 4.2.1 General principles The glove shall comply with the rele
42、vant requirements defined in EN 420, with the following specific additions. The glove may be constructed from a single or multiple material layers. The choice of material is defined by the end use requirements. In the case of protection against external ionizing radiation the glove may contain lead
43、(PbO, Pb3O4) or other heavy metallic elements to act as attenuation medium in one or more of the layers. Metallic element distribution may be uniform or designed. 4.2.2 Glove sizing and dimensions Gloves shall be sized following prescriptions of EN 420:2003+A1:2009, 5.1. NOTE In case where specific
44、use identified, special tests can be identified according to Annex B. 4.3 Attenuation efficiency and uniformity of distribution of protective material The lead equivalent thickness shall be measured by one of the methods described in 5.1. The test methods give equivalent results. The efficiency of t
45、he glove material to absorb radiation is quoted as lead equivalent thickness. The gloves shall have at least a lead equivalence thickness of 0,05 mm. BS EN 421:2010EN 421:2010 (E) 8 Except for special design (see 4.7.2) the uniformity shall be such that no single measurement shall be below the speci
46、fied value of the stated lead equivalent thickness. A minimum of four measurements shall be taken for each test condition (see 5.1.3) and the minimum value obtained is taken as the lead equivalence in millimetres. The lead equivalent thickness shall always be linked with the nature and energy of the
47、 radiation used during tests (see Clauses 6 and 7). 4.4 Glove integrity The purpose of the glove to protect against ionizing radiation or radioactive contamination is to isolate the user from the potential hazard. This is only possible if the integrity of the glove is proven. Gloves shall pass an in
48、tegrity test: the integrity shall comply with the requirements of EN 374-1:2003, 5.2. 4.5 Mechanical requirements For each protective glove against radioactive contamination and/or ionizing radiation, the obtained performance level shall be indicated in the information supplied by the manufacturer f
49、or the following mechanical tests: abrasion resistance; blade cut resistance; tearing resistance; puncture resistance. According to the test methods described in EN 388:2003, at least level 1 shall be reached for one of the four mechanical properties. For special purposes, dexterity is the most important parameter, in this case no level of protection of EN 388 has to be reached, bu
