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STANDARD
SIST EN 15333-2:2009
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 15333-2February 2009ICS 13.340.30 English VersionRespiratory equipment - Open-circuit umbilical suppliedcompressed gas diving apparatus - Part 2: Free flow apparatusEquipements respiratoires - Appareils de plongée narguiléà gaz comprimé et à circuit ouvert - Partie 2 : Appareils àécoulement libreAtemgeräte - Schlauchversorgte Leichttauchgeräte mitDruckgas - Teil 2: Geräte mit konstantem VolumenstromThis European Standard was approved by CEN on 26 December 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© 2009 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 15333-2:2009: ESIST EN 15333-2:2009
EN 15333-2:2009 (E) 2 Contents Page Foreword .5 Introduction .6 1 Scope .7 2 Normative references .7 3 Terms and definitions .8 4 Minimum equipment . 10 5 Requirements . 11 5.1 Design . 11 5.2 Materials . 12 5.3 Diver worn pressure vessel(s) (if fitted) . 12 5.4 Diver worn pressure vessel valve(s) (if fitted) . 12 5.5 High and medium pressure parts and connections . 13 5.5.1 General . 13 5.5.2 Pressure reducer(s) . 13 5.5.3 Pressure relief system(s) . 13 5.6 Hoses . 14 5.6.1 General . 14 5.6.2 Tensile strength of high and medium pressure hose assemblies . 14 5.6.3 Flexibility of high and medium pressure hose assemblies . 14 5.6.4 Kinking of high and medium pressure hoses . 14 5.6.5 High pressure hose assemblies leak test . 14 5.6.6 High pressure hose assemblies bursting pressure . 14 5.6.7 Medium pressure hose assemblies leak test . 14 5.6.8 Medium pressure hose assemblies bursting pressure . 15 5.6.9 Umbilical . 15 5.7 Breathing system . 15 5.7.1 Performance requirements . 15 5.7.2 Facepiece gas supply non-return device . 17 5.7.3 Exhaust device . 17 5.7.4 Maximum inspired partial pressure of carbon dioxide . 17 5.7.5 Hydrostatic imbalance . 17 5.8 Surface control system . 18 5.8.1 General . 18 5.8.2 Gas supply . 18 5.8.3 Gas monitoring . 19 5.9 Safety devices . 19 5.9.1 General . 19 5.9.2 Pressure indicator . 19 5.9.3 Depth indicator (if fitted) . 20 5.10 Facepiece . 20 5.10.1 General . 20 5.10.2 Helmet . 20 5.10.3 Full face mask harness . 21 5.10.4 Breathing system connections . 21 5.10.5 Visors . 21 5.10.6 Head protection against impact . 22 5.11 Harnesses . 22 5.11.1 Body harness . 22 5.11.2 Lifting harness . 23 SIST EN 15333-2:2009
EN 15333-2:2009 (E) 3 5.12 Auxiliary gas supply system (bail out) . 23 5.13 Resistance of the apparatus to temperature . 23 5.13.1 Storage . 23 5.13.2 Leakage . 23 5.14 Connectors . 23 5.15 Cleaning and disinfecting . 23 5.16 Pressure resistance of casings and monitors . 24 5.17 Oxygen compatibility . 24 5.18 Functional safety of electrical systems . 24 5.19 Voice communications . 24 5.19.1 General . 24 5.19.2 Communication recording . 24 5.20 Noise . 24 5.21 Practical performance . 25 6 Testing . 25 6.1 General . 25 6.1.1 Procedure . 25 6.1.2 Nominal values and tolerances . 27 6.1.3 Test equipment and test procedures . 27 6.2 Visual Inspection . 27 6.3 Pressure test of high and medium pressure parts . 27 6.4 Hoses and umbilical assemblies . 27 6.4.1 General . 27 6.4.2 Tensile force of high and medium pressure hose assemblies . 28 6.4.3 Flexibility of high and medium pressure hoses . 28 6.4.4 Kinking of high and medium pressure hoses . 28 6.4.5 Leak test of high and medium pressure hose assemblies . 28 6.4.6 Umbilical buoyancy . 28 6.4.7 Umbilical life line . 28 6.5 Breathing system . 28 6.5.1 Configuration . 28 6.5.2 General test conditions . 28 6.5.3 Breathing performance . 29 6.5.4 Volume weighted average inspired carbon dioxide . 29 6.5.5 Gas supply non-return device . 29 6.5.6 Exhaust device . 29 6.5.7 Hydrostatic imbalance . 30 6.6 Safety devices . 30 6.6.1 Pressure indicator . 30 6.6.2 Depth indicator(s) . 30 6.6.3 Pressure relief system(s) . 30 6.6.4 Oxygen monitor . 30 6.7 Facepiece . 30 6.7.1 Mechanical strength of the connections between the facepiece and the connector . 30 6.7.2 Full face mask harness . 30 6.7.3 Impact resistance of the visor(s) . 31 6.7.4 Head protection . 31 6.7.5 Noise assessment . 31 6.7.6 Communications modified rhyme test . 31 6.7.7 Field of vision . 32 6.8 Lifting harness . 32 6.9 Sea water resistance . 33 6.10 Resistance to temperature . 33 6.10.1 Testing at – 20 °C and 50 °C . 33 6.10.2 Testing after storage at - 30 °C and + 70 °C . 33 6.10.3 Cold water testing . 33 6.11 Cleaning and disinfection . 33 6.12 Oxygen pressure surge test . 33 6.13 Practical performance . 34 SIST EN 15333-2:2009
EN 15333-2:2009 (E) 4 6.13.1 General . 34 6.13.2 Test subjects . 35 6.13.3 Basic testing . 35 6.13.4 Functional testing when diving . 35 6.13.5 Report . 36 6.14 Pressure vessel valve . 36 6.15 Casings and monitors . 36 7 Marking . 36 8 Information supplied by manufacturer . 37 Annex A (informative)
Artificial sea water . 51 Annex B (informative)
A typical Modified Rhyme Test word list . 52 Annex ZA (informative)
Relationship between this European Standard and the Essential Requirements of EU Directive 89/686/EEC (PPE) . 53 Bibliography . 54
SIST EN 15333-2:2009
EN 15333-2:2009 (E) 5 Foreword This document (EN 15333-2:2009) has been prepared by Technical Committee CEN/TC 79 “Respiratory protective devices”, 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 text or by endorsement, at the latest by August 2009, and conflicting national standards shall be withdrawn at the latest by August 2009. 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 responsible for identifying any or all such patent rights. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: 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 the United Kingdom. SIST EN 15333-2:2009
EN 15333-2:2009 (E) 6 Introduction A given open-circuit umbilical supplied compressed gas diving apparatus can only be approved when the apparatus or apparatus sub-assemblies satisfy the requirements of the tests specified in this European Standard, and practical performance tests have been carried out successfully on complete apparatus where specified in this European Standard. The production of this European Standard has identified varying methods of surface supply and has separated them into two parts; apparatus that supplies demand type facepieces and apparatus that supplies free flow type facepieces. SIST EN 15333-2:2009
EN 15333-2:2009 (E) 7 1 Scope This European Standard specifies minimum requirements for free flow surface supplied and free flow surface oriented diving apparatus to ensure a minimum level of safe operation of the apparatus. It applies to the following: a maximum depth of 50 m for apparatus using: a) air or; b) oxygen or; c) oxygen in nitrogen mixtures (Nitrox) or; d) oxygen in helium mixtures (Heliox) or; e) oxygen, nitrogen and helium mixtures (Trimix); water temperatures between 4 °C and 34 °C or outside these temperatures as specified by the manufacturer; environmental temperatures between -20 °C and 50 °C or outside these temperatures as specified by the manufacturer. The requirements of this European Standard are intended to take account of the interaction between the wearer, the apparatus, and where possible the environment in which the apparatus is likely to be used. This European Standard does not cover saturation diving systems, mini bell systems or apparatus used for oxygen decompression only. 2 Normative references The following referenced documents are indispensable for the application of this European Standard. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 132:1998, Respiratory protective devices — Definitions of terms and pictograms EN 134:1998, Respiratory protective devices — Nomenclature of components EN 144-1, Respiratory protective devices — Gas cylinder valves — Part 1: Thread connections for insert connector EN 144-3, Respiratory protective devices — Gas cylinder valves — Part 3: Outlet connections for diving gases, Nitrox and oxygen EN 397, Industrial safety helmets EN 812, Industrial bump caps EN 12021, Respiratory protective devices — Compressed air for breathing apparatus EN 14593-1:2005, Respiratory protective devices — Compressed air line breathing apparatus with demand valve — Part 1: Apparatus with a full face mask — Requirements, testing, marking SIST EN 15333-2:2009
EN 15333-2:2009 (E) 8 EN 61508 (parts 1–7), Functional safety of electrical/electronic/programmable electronic safety-related systems EN ISO 12209 (all parts), Gas cylinders — Outlet connections for gas cylinder valves for compressed breathable air 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 132:1998 and the nomenclature given in EN 134:1998 and the following apply. 3.1 auxiliary gas supply system
bail out auxiliary and independent gas supply or breathing apparatus for use in case of a failure of the umbilical supply 3.2 body harness component to attach the breathing apparatus, umbilical and any pressure vessels to the body of the diver 3.3 breathing frequency number of breathing cycles per minute 3.4 displaced volume tidal volume volume of respirable gas displaced by a breathing simulator during one half cycle (inhalation or exhalation)
NOTE Measured in litres. 3.5 exhaust device device for releasing excess gas from the facepiece 3.6 full face mask facepiece covering mouth, nose, eyes and chin which may be fitted with either a mouthpiece or an inner mask 3.7 helmet facepiece covering the whole head, which may be fitted with either a mouthpiece or an inner mask 3.8 high pressure pressure greater than medium pressure 3.9 hydrostatic imbalance difference at both end exhalation no flow and end inhalation no flow between the pressure within the facepiece (see Figure 1) and that at the reference point, which could be either the suprasternal notch or the lung centroid of the diver (see Figure 2) 3.10 life line component of the apparatus which connects the diver to the surface and may be used to help a diver in distress SIST EN 15333-2:2009
EN 15333-2:2009 (E) 9 3.11 lifting harness component of the apparatus attached to the diver for lifting the diver from the water 3.12 low pressure pressure within the facepiece, i.e. approximately ambient pressure 3.13 medium pressure internal pressure between a pressure reducer and a facepiece NOTE This is sometimes referred to as intermediate pressure. 3.14 neck connector device that provides a sealed connection between the helmet and a wearers drysuit
NOTE It is normally worn with some form of retaining device that prevents the helmet from floating off the wearers head. 3.15 neckdam device that connects to the helmet and seals at the wearers neck
NOTE It is normally worn with some form of retaining device that prevents the helmet from floating off the wearers head. 3.16 pressure volume diagram diagram generated during one breathing cycle by plotting the respiratory pressure against the displaced volume (see Figure 1) 3.17 rated working pressure maximum allowable pressure for which the apparatus is designed 3.18 respiratory minute volume
RMV product of the tidal volume and breathing frequency
NOTE Measured in litres per minute. 3.19 respiratory pressure differential pressure at the mouth relative to the no flow pressures at the mouth at the end of inhalation and exhalation (see Figure 1) 3.20 surface control system system that controls the supply from (a) gas source(s) to the diver(s) via the umbilical
NOTE It may also have a separate independent controlled supply for a stand by diver. 3.21 free flow surface supplied diving apparatus
diving apparatus that has gas supplied from the surface through a surface control system or system via an umbilical, allowing the diver to breathe under water from a facepiece
SIST EN 15333-2:2009
EN 15333-2:2009 (E) 10 NOTE The apparatus is designed and constructed to pass a continuous flow of gas through the facepiece from which the diver inhales. Excess gas passes into the water or to a return hose, if fitted. 3.22 umbilical connection to the diver from the surface control system
NOTE It may consist of a single hose or multiple lines, comprising life line, gas supply and if fitted voice communication and depth measuring system together with other services such as heating or cooling for suits, power for lighting and camera video signals. 3.23 work of breathing work expended during one breathing cycle
NOTE 1 Measured in Joule per litre. NOTE 2 This work is proportional to the area bounded by the pressure volume diagram (see Figure 1). 4 Minimum equipment The apparatus may consist of subassemblies. The apparatus shall comprise, at least the following components: surface gas supply: gas supply; surface control system; gas monitoring; breathing system: facepiece; flow control devices; body harness; umbilical; safety device(s). It shall also be delivered with information supplied by the manufacturer. The apparatus may also include the following components: auxiliary gas supply; lifting harness; depth measuring device; voice communication system. SIST EN 15333-2:2009
EN 15333-2:2009 (E) 11 5 Requirements 5.1 Design 5.1.1 The manufacturer shall support the apparatus design by the provision of a failure mode effect and criticality analysis. Testing shall be done in accordance with 6.2. 5.1.2 The apparatus shall be designed and its components and parts located to provide protection against mechanical damage caused by external influence and to ensure that it is possible to perform all pre-dive functional
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