SIST EN 14143:2013

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Oprema za dihala - Samoreševalni dihalni potapljaški aparatiAtemgeräte - Autonome RegenerationstauchgeräteAppareils respiratoires - Appareils de plongee autonomes à circuit fermeRespiratory equipment - Self-contained re-breathing diving apparatus13.340.30Varovalne dihalne napraveRespiratory protective devicesICS:Ta slovenski standard je istoveten z:EN 14143:2013SIST EN 14143:2013en,fr,de01-november-2013SIST EN 14143:2013SLOVENSKI
STANDARDSIST EN 14143:20031DGRPHãþD



SIST EN 14143:2013



EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 14143
July 2013 ICS 13.340.30 Supersedes EN 14143:2003English Version
Respiratory equipment - Self-contained re-breathing diving apparatus
Appareils respiratoire - Appareils de plongée autonome à recyclage de gaz
Atemgeräte - Autonome Regenerationstauchgeräte This European Standard was approved by CEN on 1 May 2013.
CEN members are bound to comply with the CEN/CENELEC Internal 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-CENELEC 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 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, 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, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre:
Avenue Marnix 17,
B-1000 Brussels © 2013 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 14143:2013: ESIST EN 14143:2013



EN 14143:2013 (E) 2 Contents Page Foreword . 6 1 Scope . 7 2 Normative references . 7 3 Terms and definitions . 8 4 Minimum equipment . 10 5 Requirements . 10 5.1 Design . 10 5.2 Materials . 12 5.3 Gas cylinder(s) . 12 5.4 Cylinder valve(s) . 13 5.5 High and medium pressure parts and connections . 13 5.5.1 General . 13 5.5.2 Pressure reducer (if fitted) . 14 5.5.3 Pressure relief system(s) . 14 5.6 Breathing circuit . 14 5.6.1 Performance requirements . 14 5.6.2 Breathable volume . 20 5.6.3 Breathing circuit test pressure . 20 5.6.4 Exhaust valve . 20 5.6.5 Inhalation and exhalation valves . 20 5.6.6 Carbon dioxide absorbent canister . 21 5.6.7 Inhalation temperature . 21 5.6.8 Ingress of water . 21 5.7 Gas control or supply system . 21 5.7.1 Inspired partial pressure of oxygen . 21 5.7.2 Oxygen partial pressure set point maintenance . 22 5.7.3 Alphanumeric display for inspired partial pressure of oxygen (if fitted) . 22 5.7.4 Gas endurance . 22 5.8 Hose assemblies . 23 5.8.1 Tensile strength of high and medium pressure hose assemblies subjected to external tensile force . 23 5.8.2 Flexibility of high and medium pressure hoses . 23 5.8.3 Leakage of high pressure hose assembly . 23 5.8.4 Leakage of medium pressure hose assembly . 23 5.8.5 Burst pressure of high pressure hose assembly. 23 5.8.6 Burst pressure of medium pressure hose assembly. 23 5.8.7 Breathing hose . 24 5.9 Safety devices . 24 5.9.1 General . 24 5.9.2 Pressure indicator . 24 5.9.3 Monitors for inspired gases . 25 5.9.4 Active warning devices . 25 5.10 Facepiece . 26 5.10.1 General . 26 5.10.2 Facepiece harness (if fitted) . 26 5.10.3 Connection . 27 5.10.4 Eyepiece and visors . 27 5.10.5 Head protection against impact (if fitted) . 27 5.11 Body harness . 28 SIST EN 14143:2013



EN 14143:2013 (E) 3 5.12 Emergency breathing system . 28 5.13 Electrical systems . 28 5.13.1 Safety of electrical systems . 28 5.13.2 Programmable systems . 28 5.13.3 Electromagnetic compatibility (EMC) . 28 5.13.4 Power source . 28 5.14 Resistance to temperature . 29 5.14.1 Storage . 29 5.14.2 Pre-dive operation . 29 5.15 Cleaning and disinfecting . 29 5.16 Connectors . 29 5.17 Oxygen compatibility and cleanliness . 29 5.18 Pressure resistance of casings and monitors . 29 5.19 Sea water resistance . 29 5.20 Practical performance . 30 6 Testing . 30 6.1 General . 30 6.1.1 Introduction . 30 6.1.2 Procedure . 30 6.1.3 Nominal values and tolerances . 30 6.1.4 Test equipment . 30 6.2 Visual Inspection . 31 6.3 Breathing circuit . 31 6.3.1 General test conditions . 31 6.3.2 Breathing performance . 32 6.3.3 Volume weighted average inspired carbon dioxide . 32 6.3.4 Inspired gas temperature . 32 6.3.5 Breathing performance with automatic volume addition system . 33 6.4 Hydrostatic imbalance . 33 6.5 Breathable volume . 33 6.5.1 Volume . 33 6.5.2 Breathing circuit pressure test . 33 6.5.3 Exhaust valve . 34 6.5.4 Inhalation and exhalation valves . 34 6.5.5 Ingress of water . 34 6.6 Apparatus endurance . 34 6.6.1 General . 34 6.6.2 Carbon dioxide absorption endurance . 35 6.6.3 Gas endurance . 35 6.7 Inspired partial pressure of oxygen. 35 6.8 Hoses assemblies . 36 6.8.1 General . 36 6.8.2 Tensile strength of high and medium pressure hose assemblies subjected to external tensile force . 36 6.8.3 Flexibility of high and medium pressure hoses . 36 6.8.4 Leakage of high pressure hose assembly. 36 6.8.5 Leakage of medium pressure hose assembly . 36 6.8.6 Burst pressure of high pressure hose assembly . 36 6.8.7 Burst pressure of medium pressure hose assembly . 36 6.8.8 Tensile load of breathing hose connections . 37 6.9 Test pressure of high and medium pressure parts . 37 6.10 Safety devices . 37 6.10.1 Pressure devices . 37 6.10.2 Monitor for inspired partial pressure of oxygen . 37 6.10.3 Monitor for inspired partial pressure of carbon dioxide . 38 6.10.4 Active warning devices . 38 6.10.5 Pressure relief system(s) . 38 6.11 Facepiece . 38 6.11.1 Mechanical strength of the facepiece (excluding mouthpiece) . 38 SIST EN 14143:2013



EN 14143:2013 (E) 4 6.11.2 Field of vision . 39 6.11.3 Impact resistance of the eyepiece(s) or visor(s) . 42 6.11.4 Facepiece harness . 42 6.11.5 Mouthpiece . 42 6.12 Electrical systems, Electromagnetic compatibility (EMC) . 42 6.13 Resistance to temperature . 42 6.13.1 General . 42 6.13.2 Testing after storage . 42 6.13.3 Testing in pre-dive operation . 43 6.14 Cleaning and disinfection . 43 6.15 Oxygen pressure surge test . 43 6.16 Casings and monitors . 45 6.17 Sea water resistance . 45 6.18 Practical performance . 46 6.18.1 General . 46 6.18.2 Test subjects . 46 6.18.3 Basic testing . 46 6.18.4 Functional testing when diving . 46 6.18.5 Pass/fail criteria . 47 6.18.6 Report . 47 7 Marking . 47 8 Information supplied by manufacturer . 48 Annex A (informative)
Requirement clauses and corresponding test clauses of this European Standard . 50 Annex B (normative)
Safety-critical software . 52 B.1 General . 52 B.2 Requirements . 52 Annex C (informative)
Artificial sea water . 55 Annex D (informative)
Details of significant technical changes between this European Standard and the previous edition . 56 Annex ZA (informative)
Relationship between this European Standard and the Essential Requirements of EU Directive 89/686/EEC on Personal Protective Equipment . 57 Bibliography. 58
Tables
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Table 1 — Qualitative likelihood categories . 11 Table 2 — Consequence categories . 11 Table 3 — Risk criteria . 11 Table 4 — Breathing simulator settings . 15 Table 5 — Hydrostatic imbalance . 17 Table 6 — Accuracy of the displayed partial pressure of oxygen . 22 Table 7 — Respiratory volume . 33 Table 8 — Breathing simulator respiratory exchange settings. 36 Table 9 — Test sequence (if applicable) . 45 SIST EN 14143:2013



EN 14143:2013 (E) 5 Table A.1 — Comparison of requirement clauses and test clauses (1 of 2) . 50 Table ZA.1 — Correspondence between this European Standard and Directive 89/686/EEC on Personal Protective Equipment . 57 Figures . Page
Figure 1 — Reference points. 15 Figure 2 — Analysis of pressure volume loop . 16 Figure 3 — Diver roll . 18 Figure 4 — Diver pitch . 19 Figure 5 — Test orifice . 31 Figure 6 — Test arrangement for tensile force . 38 Figure 7 — Stoll Apertometer . 40 Figure 8 — Apertometer diagram (not to scale) . 41 Figure 9 — Example of an ignition test installation . 44 Figure 10 — Pressure cycle specification for oxygen pressure surge test . 44
SIST EN 14143:2013



EN 14143:2013 (E) 6 Foreword This document (EN 14143:2013) 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 January 2014, and conflicting national standards shall be withdrawn at the latest by January 2014. 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. This document supersedes EN 14143:2003. Annex D provides details of significant technical changes between this European Standard and the previous edition. 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 with EU Directive(s), see informative Annex ZA, which is an integral part of this document. According to the CEN-CENELEC Internal Regulations, the national standards organisations of the following countries are bound to implement this 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, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. SIST EN 14143:2013



EN 14143:2013 (E) 7 1 Scope This European Standard specifies minimum requirements for self-contained re-breathing diving apparatus to ensure a minimum level of safe operation of the apparatus. It applies to the following:  a maximum depth of 6 m for apparatus using pure oxygen;  a maximum depth of 40 m for apparatus using oxygen in nitrogen gas mixtures;  a maximum depth of 100 m for apparatus using oxygen and helium or oxygen, nitrogen and helium gas mixtures;  water temperatures from 4 °C to 34 °C or outside these temperatures as specified by the manufacturer. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. 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 148-1, Respiratory protective devices — Threads for facepieces — Part 1: Standard thread connection EN 148-2, Respiratory protective devices — Threads for facepieces — Part 2: Centre thread connection EN 148-3, Respiratory protective devices — Threads for facepieces — Part 3: Thread connection M 45 x 3 EN 12021, Respiratory protective devices — Compressed air for breathing apparatus EN 15333-1:2008, Respiratory equipment — Open-circuit umbilical supplied compressed gas diving apparatus — Part 1: Demand apparatus EN 61000-6-1, Electromagnetic compatibility (EMC) - Part 6-1: Generic standards - Immunity for residential, commercial and light-industrial environments (IEC 61000-6-1) EN ISO 10297, Transportable gas cylinders — Cylinder valves — Specification and type testing (ISO 10297) EN ISO 12209-1, Gas cylinders — Outlet connections for gas cylinder valv
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