1、March 2013 Translation by DIN-Sprachendienst.English price group 10No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS
2、03.200; 03.080.30!$5z“1951887www.din.deDDIN EN ISO 13293Recreational diving services Requirements for gas blender training programmes (ISO 13293:2012);English version EN ISO 13293:2012,English translation of DIN EN ISO 13293:2013-03Dienstleistungen des Freizeittauchens Anforderungen an Ausbildungspr
3、ogramme fr Gas Blender (ISO 13293:2012);Englische Fassung EN ISO 13293:2012,Englische bersetzung von DIN EN ISO 13293:2013-03Services relatifs la plonge de loisirs Exigences relatives aux programmes de formation la prparation des mlanges gazeux(ISO 13293:2012);Version anglaise EN ISO 13293:2012,Trad
4、uction anglaise de DIN EN ISO 13293:2013-03www.beuth.deDocument comprises 17 pagesIn case of doubt, the German-language original shall be considered authoritative.02.13 DIN EN ISO 13293:2013 2 National foreword This document (EN ISO 13293:2012) has been prepared by Technical Committee ISO/TC 228 “To
5、urism and related services“ (Secretariat: AENOR, Spain) in collaboration with Technical Committee CEN/TC 329 “Tourism services“ (Secretariat: DIN, Germany). The responsible German body involved in its preparation was the Normenausschuss Dienstleistungen (Services Standards Committee), Working Commit
6、tee NA 159-02-01 AA Tourismus-Dienstleistungen. The DIN Standards corresponding to the International Standards referred to in Clause 2 of this standard are as follows: ISO 24802-1 DIN EN ISO 24802-1 ISO 24802-2 DIN EN ISO 24802-2 National Annex NA (informative) Bibliography DIN EN ISO 24802-1, Recre
7、ational diving services Requirements for the training of scuba instructors Part 1: Level 1 DIN EN ISO 24802-2, Recreational diving services Requirements for the training of scuba instructors Part 2: Level 2 A comma is used as the decimal marker. EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN I
8、SO 13293 November 2012 ICS 03.080.30; 03.200 English Version Recreational diving services Requirements for gas blender training programmes (ISO 13293:2012) Services relatifs la plonge de loisirs Exigences relatives aux programmes de formation la prparation des mlanges gazeux (ISO 13293:2012) Dienstl
9、eistungen des Freizeittauchens Anforderungen an Ausbildungsprogramme fr Gas Blender (ISO 13293:2012) This European Standard was approved by CEN on 31 October 2012. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standa
10、rd 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-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English,
11、 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-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulg
12、aria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Tu
13、rkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN
14、 ISO 13293:2012: E Contents PageForeword Introduction 1 Scope 2 Normative references . 3 Terms and definitions . 4 Competencies of gas blenders 5 Theoretical knowledge . 5.1 Purpose of gas blender training 5.2 Gas blending and delivery methods 5.3 Gases and gas blends 5.4 Considerations for elevated
15、 oxygen levels 5.5 Cylinder marking and handling . 5.6 Gas analysis and record keeping . 5.7 Gas blending calculations 6 Practical skills 7 Gas blender instructors .8 Qualification Annex A (informative) Background information for gas blender training programmes .11Bibliography .142DIN EN ISO 13293:2
16、013 EN ISO 13293:2012 (E) (informative) 12ZAAnnex A deviations-3 Foreword This document (EN ISO 13293:2012) has been prepared by Technical Committee ISO/TC 228 Tourism and related services in collaboration with Technical Committee CEN/TC 329 “Tourism services”, the secretariat of which is held by DI
17、N. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by May 2013, and conflicting national standards shall be withdrawn at the latest by May 2013. Attention is drawn to the possibility that some of the
18、 elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. According to the CEN/CENELEC Internal Regulations, the national standards organisations of the following countries are bound to implement th
19、is European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovak
20、ia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 13293:2012 has been approved by CEN as a EN ISO 13293:2012 without any modification. DIN EN ISO 13293:2013 EN ISO 13293:2012 (E) “”IntroductionThe requirements specified in this International
21、Standard are minimum requirements; they do not preclude the provision of additional training or the assessment by a service provider of additional competencies. This International Standard represents a tool for comparison of existing (or future) qualifications of gas blenders who want to mix gases f
22、or diving purposes.4DIN EN ISO 13293:2013 EN ISO 13293:2012 (E) 1 ScopeThis International Standard specifies requirements for gas blender training programmes and the competencies required of an individual in order to obtain a gas blender certificate from a training organization, attesting that he/sh
23、e has met or exceeded the requirements specified in this International Standard.This International Standard specifies two levels of gas blender qualification, as follows: Level 1 gas blender; Level 2 gas blender.This International Standard recognizes that a training programme can be organized and de
24、livered in a modular way.2 Normative referencesThe 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
25、 11107:2009, Recreational diving services Requirements for training programmes on enriched air nitrox (EAN) divingISO 24802-1, Recreational diving services Safety related minimum requirements for the training of scuba instructors Part 1: Level 1ISO 24802-2, Recreational diving services Safety relate
26、d minimum requirements for the training of scuba instructors Part 2: Level 23 Terms and definitionsFor the purposes of this document, the following terms and definitions apply.3.1training organizationentity which provides training in accordance with this International Standard and awards qualificati
27、ons, and which is responsible for the implementation and quality management of such trainingNOTE Can include scuba diving federations and scuba diver training agencies.3.2enriched air nitroxEANmixture of nitrogen and oxygen with more than 21 % oxygen3.3helium-based gas mixturehelium-based gas blendm
28、ixture of oxygen and helium, or breathable mixture of oxygen, helium and nitrogen3.4trimixmixture of oxygen, helium and nitrogen5DIN EN ISO 13293:2013 EN ISO 13293:2012 (E) 3.5helioxmixture of oxygen and helium3.6oxygen cleanverified that particulates, fibres, oils, greases and other contaminants ar
29、e absentNOTE Any mixture of gases can contain trace gases at levels no higher than those found in ambient air. Permissible levels of trace gases can be specified in national, regional and/or International Standards.3.7oxygen compatiblecapable of coexisting with elevated oxygen concentrations and a p
30、otential source of ignition without flashing, based on a systems maximum operating pressure and temperature3.8oxygen-compatible airair with a reduced level of condensable hydrocarbon mist or vapour3.9oxygen designdesign that minimizes any tendency for heat generation, ignition of particulates, or th
31、e accumulation of contaminants for an intended partial pressure of oxygen and temperature3.10oxygen servicesystem or component that has been designed and tested for oxygen use, has been tested as oxygen clean and is oxygen compatible4 Competencies of gas blendersThe gas blender training programme sh
32、all ensure that persons assessed in accordance with Clause 8 are qualified to blend gases for diving purposes, following accepted safety protocols and standards.This International Standard specifies two levels of competence for gas blenders, as follows:a) Level 1 gas blenders are qualified to blend
33、enriched air nitrox (EAN);b) Level 2 gas blenders are qualified to blend and supply any gases and gas mixes covered by this International Standard.Gas blenders are competent to provide specific mixtures of gases in a compatible cylinder (e.g. working pressure, correct marking, test validity).The com
34、pletion of a training programme in accordance with this International Standard does not qualify a person to do the following: advise a diver on the gas mixture to be used for a given dive; establish operational parameters for a diver, e.g. the maximum operating depth or maximum partial pressure of a
35、 component gas; provide oxygen cleaning and servicing of diving equipment.6DIN EN ISO 13293:2013 EN ISO 13293:2012 (E) 5 Theoretical knowledge5.1 Purpose of gas blender trainingThe training programme shall ensure that students have knowledge of issues related to the following aspects of diver breath
36、ing gas mixes (appropriate to Level 1 or Level 2 gas blender qualification) for diving purposes and associated risks: safe production; analysis; handling; use.5.2 Gas blending and delivery methodsThe training programme shall ensure that students for both the Level 1 and the Level 2 gas blender quali
37、fication have knowledge of operating principles, design features, advantages, disadvantages and safety issues related to the following gas blending and delivery methods: nitrogen reduction methods (e.g. using a membrane or a molecular sieve); continuous blending; partial pressure blending; using pre
38、mixed gases; “gravimetric mixing method” (mixing by weight); booster pumps.5.3 Gases and gas blends5.3.1 The training programme shall ensure that students for both the Level 1 and the Level 2 gas blender qualification have knowledge of the uses, characteristics, advantages, disadvantages and safety
39、issues of the following gases and gas mixtures used by divers: oxygen; nitrogen; air; enriched air nitrox (EAN).NOTE It is advisable that the training programme states that gases obtained from a third party which will be used in breathing mixtures for diving purposes need to be formally certified to
40、 be fit for use for breathing purposes (e.g. diving grade oxygen, medical grade oxygen, aviator grade oxygen or any other formally certified breathing-grade oxygen).5.3.2 In addition to the items listed in 5.3.1, the training programme shall ensure that students for the Level 2 gas blender qualifica
41、tion have knowledge of the uses, characteristics, advantages, disadvantages, safety issues of the following gases and gas mixtures used by divers: helium, argon; trimix; heliox.7DIN EN ISO 13293:2013 EN ISO 13293:2012 (E) 5.4 Considerations for elevated oxygen levels5.4.1 Oxygen hazardsThe training
42、programme shall ensure that students for both the Level 1 and the Level 2 gas blender qualification have knowledge of risks related to the handling of gas mixtures with elevated oxygen levels. This shall include the following: the “fire triangle” (oxygen, fuel and heat); causes of fire (and explosio
43、n), e.g. adiabatic compression, particle impingement, contamination accumulation, frictional heat, inappropriate components, electrical arcing, static discharge; corrosion.5.4.2 Oxygen serviceThe training programme shall ensure that students for both the Level 1 and the Level 2 gas blender qualifica
44、tion understand the requirements for oxygen service, i.e.: oxygen compatible; oxygen clean; component design features; avoiding contamination of oxygen service equipment (e.g. using oxygen-compatible air, not contaminating parts of equipment that come into contact with elevated concentrations or par
45、tial pressures of oxygen).The training programme shall ensure that students know that oxygen equipment, e.g. cylinders, valves and other equipment parts subjected to high partial pressures of oxygen, shall be oxygen cleaned.NOTE Recommended oxygen cleaning procedures are specified in ISO 11621:1997,
46、 Annex A, and ISO 15001:2010, Annex A.5.4.3 Specific filling station featuresThe training programme shall ensure that students for both the Level 1 and the Level 2 gas blender qualification have knowledge of the selection, use and maintenance of the following items or components: valves; gauges; non
47、-return valves (check valves); manifolds, filling whips and connectors; analysers; storage cylinders/banks; filters; lubricants; gas flow rate control devices.8DIN EN ISO 13293:2013 EN ISO 13293:2012 (E) 5.4.4 Gas flow ratesThe training programme shall ensure that students for both the Level 1 and t
48、he Level 2 gas blender qualification have knowledge of gas flow rates in gas mixing systems.Gas flow shall be considered and controlled when mixing gases with respect to the following: the heating of gases; the end results of the mixtures; the overall safety when handling oxygen or oxygen-rich mixtures.5.5 Cylinder marking and handlingThe training programme shall ensure that students for both the Level 1 and the Level 2 gas blender qu
