1、BS ISO22734-1:2008ICS 71.100.20; 71.120.99NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDHydrogen generatorsusing waterelectrolysis processPart 1: Industrial and commercialapplicationsThis British Standardwas published underthe authority of theStandards Policy
2、andStrategy Committee on 30November 2008 BSI 2008ISBN 978 0 580 55894 8Amendments/corrigenda issued since publicationDate CommentsBS ISO 22734-1:2008National forewordThis British Standard is the UK implementation of ISO 22734-1:2008.The UK participation in its preparation was entrusted to TechnicalC
3、ommittee PVE/3/8, Hydrogen technologies.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisionsof a contract. Users are responsible for its correct application.Compliance with a British
4、 Standard cannot confer immunityfrom legal obligations.BS ISO 22734-1:2008Reference numberISO 22734-1:2008(E)ISO 2008INTERNATIONAL STANDARD ISO22734-1First edition2008-07-01Hydrogen generators using water electrolysis process Part 1: Industrial and commercial applications Gnrateurs dhydrogne utilisa
5、nt le procd de llectrolyse de leau Partie 1: Applications industrielles et commerciales BS ISO 22734-1:2008ISO 22734-1:2008(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licensing policy, this file may be printed or viewed but shall not be edited unless th
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10、rg Web www.iso.org Published in Switzerland ii ISO 2008 All rights reservedBS ISO 22734-1:2008ISO 22734-1:2008(E) ISO 2008 All rights reserved iiiContents Page Foreword vi 0 Introduction. vii 0.1 Electrolysis Technology vii 1 Scope 1 2 Normative references 1 3 Terms and definitions .5 4 Operating co
11、nditions and specifications 7 4.1 Energy consumption .7 4.1.1 Electrical .7 4.1.2 Other utilities7 4.2 Feed water specifications .8 4.3 Ambient environment8 4.4 Purge gas8 4.5 Oxygen storage/venting8 4.6 Delivery of hydrogen .8 4.7 Delivery of oxygen.8 5 Mechanical equipment 8 5.1 General requiremen
12、ts8 5.2 General materials requirements.9 5.3 Enclosures10 5.3.1 Minimum strength10 5.3.2 Environmental tolerance.10 5.3.3 Fire resistance10 5.3.4 Insulating materials .10 5.3.5 Access panels10 5.3.6 Ventilation openings .11 5.3.7 Containment of hazardous liquid leakage 11 5.4 Pressure bearing compon
13、ents.11 5.4.1 General requirements11 5.4.2 Built-in storage of hydrogen and oxygen .11 5.4.3 Cell stacks 12 5.4.4 Process vessels.12 5.4.5 Piping, fittings and joints12 5.4.6 Compressors13 5.4.7 Pressure relief devices13 5.4.8 Pressure regulators.13 5.4.9 Shut-off valves .13 5.5 Electric heaters 14
14、5.6 Pumps .14 5.7 Fans and ventilators14 5.8 Heat transfer system .14 5.9 Connection to potable water 14 6 Electrical equipment, wiring and ventilation 14 6.1 Fire and explosion hazard protection requirements14 6.1.1 General requirements14 6.1.2 Area classification for hydrogen generators 14 6.1.3 P
15、rotection requirements for equipment within classified areas.14 6.1.4 Protection methods to prevent the accumulation of ignitable mixtures .15 BS ISO 22734-1:2008ISO 22734-1:2008(E) iv ISO 2008 All rights reserved6.1.5 Additional protection measures for hydrogen generators where oxygen is purposely
16、vented inside the hydrogen generator enclosure 15 6.1.6 Ventilation 16 6.1.7 Start-up purge 16 6.1.8 Ventilation of adjacent compartments 16 6.1.9 Hydrogen gas detection system 16 6.1.10 Hydrogen generators designed to be installed in classified areas . 16 6.2 Electrical equipment . 18 6.2.1 General
17、 requirements . 18 6.2.2 Grounding and bonding . 18 6.2.3 Circuit protection 18 6.2.4 Safety control circuit 18 7 Control systems 19 7.1 General . 19 7.2 Operator Controls . 20 7.2.1 Start 20 7.2.2 Stop 20 7.2.3 Reset. 20 7.2.4 Emergency stop 20 7.2.5 Suspension of safeguards . 20 7.3 Control functi
18、on in the event of failure. 20 7.4 Programmable electronic equipment 20 7.5 Correctable conditions . 20 7.6 Interconnected installations 21 7.7 Safety components . 21 7.8 Remote control systems 21 7.9 Alarms 21 8 Ion transport medium . 21 8.1 Electrolyte 21 8.2 Membrane 22 9 Protection of service pe
19、rsonnel 22 10 Test methods. 23 10.1 Type (Qualification) tests . 23 10.1.1 General requirements . 23 10.1.2 Basic test arrangements 23 10.1.3 Reference test conditions 23 10.1.4 Electrical tests. 25 10.1.5 Pressure tests 27 10.1.6 Dilution tests 28 10.1.7 Protection against the spread of fire tests
20、. 29 10.1.8 Temperature tests . 29 10.1.9 Environmental tests 29 10.1.10 Performance tests. 29 10.2 Routine tests 30 10.2.1 General requirements . 30 10.2.2 Continuity of the protective bonding circuit test. 30 10.2.3 Voltage test 30 10.2.4 Functional tests. 30 10.2.5 Leakage test. 30 11 Marking and
21、 labelling . 30 11.1 General requirements . 30 11.2 Hydrogen generator marking. 30 11.3 Marking of components 31 11.4 Warning signs 31 11.5 Additional requirements for hydrogen generators containing classified areas and for hydrogen generators designed to be used in classified areas 31 11.6 Addition
22、al requirements for oxygen venting . 31 BS ISO 22734-1:2008ISO 22734-1:2008(E) ISO 2008 All rights reserved v12 Documentation accompanying the hydrogen generator.31 12.1 Instructions and diagrams contained in the hydrogen generator31 12.2 Handling and lifting instructions31 12.3 Operation manual 32
23、12.4 Electrical diagrams32 12.5 Installation instructions 33 12.6 Maintenance instructions .33 Annex A (informative) Hydrogen assisted corrosion 35 Annex B (informative) Conventional Container Terminology.36 Annex C (informative) Flammability limits of hydrogen37 Bibliography 38 BS ISO 22734-1:2008I
24、SO 22734-1:2008(E) vi ISO 2008 All rights reservedForeword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each
25、 member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the Internationa
26、l Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards
27、 adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of
28、 patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 22734-1 was prepared by Technical Committee ISO/TC 197, Hydrogen technologies. ISO 22734 consists of the following parts, under the general title Hydrogen generators using water electrolysis process:
29、 Part 1: Industrial and commercial applications Part 2: Residential applications BS ISO 22734-1:2008ISO 22734-1:2008(E) ISO 2008 All rights reserved vii0 Introduction 0.1 Electrolysis Technology In an electrolyser cell, electricity causes dissociation of water into hydrogen and oxygen molecules. An
30、electric current is passed between two electrodes separated by a conductive electrolyte or “ion transport medium”, producing hydrogen at the negative electrode (cathode) and oxygen at the positive electrode (anode). As water is H2O, twice the volume of hydrogen is produced over oxygen. Hydrogen gas
31、produced using electrolysis technology can be utilized immediately or stored for later use. The cell(s), and electrical, gas processing, ventilation, cooling and monitoring equipment and controls are contained within the hydrogen generator enclosure. Gas compression and feed water conditioning and a
32、uxiliary equipment may also be included. BS ISO 22734-1:2008BS ISO 22734-1:2008INTERNATIONAL STANDARD ISO 22734-1:2008(E) ISO 2008 All rights reserved 1Hydrogen generators using water electrolysis process Part 1: Industrial and commercial applications 1 Scope This International Standard defines the
33、construction, safety and performance requirements of packaged or factory matched hydrogen gas generation appliances, herein referred to as hydrogen generators, using electrochemical reactions to electrolyse water to produce hydrogen and oxygen gas. This International Standard is applicable to hydrog
34、en generators that use the following types of ion transport medium: Group of aqueous bases; Solid polymeric materials with acidic function group additions such as acid proton exchange membrane (PEM). This part of ISO 22734 is applicable to hydrogen generators intended for indoor and outdoor commerci
35、al and industrial use (non-residential use). Hydrogen generators that can also be used to generate electricity such as reversible fuel cells are excluded from the scope of this International Standard. This International Standard is intended to be used for certification purposes. 2 Normative referenc
36、es 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. ISO 834-1, Fire-resistance tests Elements of b
37、uilding construction Part 1: General requirements ISO 1182, Reaction to fire tests for building products Non-combustibility test ISO 3864 (all parts), Graphical symbols Safety colours and safety signs ISO 4126-1, Safety devices for protection against excessive pressure Part 1: Safety valves ISO 4126
38、-2, Safety devices for protection against excessive pressure Part 2: Bursting disc safety devices ISO 4706, Refillable welded steel gas cylinders ISO 7866, Gas cylinders Refillable seamless aluminium alloy gas cylinders Design, construction and testing ISO 9300, Measurement of gas flow by means of c
39、ritical flow Venturi nozzles ISO 9809-1, Gas cylinders Refillable seamless steel gas cylinders Design, construction and testing Part 1: Quenched and tempered steel cylinders with tensile strength less than 1 100 MPa BS ISO 22734-1:2008ISO 22734-1:2008(E) 2 ISO 2008 All rights reservedISO 9809-2, Gas
40、 cylinders Refillable seamless steel gas cylinders Design, construction and testing Part 2: Quenched and tempered steel cylinders with tensile strength greater than or equal to 1 100 MPa ISO 9809-3, Gas cylinders Refillable seamless steel gas cylinders Design, construction and testing Part 3: Normal
41、ized steel cylinders ISO 9951, Measurement of gas flow in closed conduits Turbine meters ISO 10790, Measurement of fluid flow in closed conduits Guidance to the selection, installation and use of Coriolis meters (mass flow, density and volume flow measurements) ISO 11119-1, Gas cylinders of composit
42、e construction Specification and test methods Part 1: Hoop wrapped composite gas cylinders ISO 11119-2, Gas cylinders of composite construction Specification and test methods Part 2: Fully wrapped fibre reinforced composite gas cylinders with load-sharing metal liners ISO 11119-3, Gas cylinders of c
43、omposite construction Specification and test methods Part 3: Fully wrapped fibre reinforced composite gas cylinders with non-load-sharing metallic or non-metallic liners ISO 12100-2, Safety of machinery Basic concepts, general principles for design Part 2: Technical principles ISO 12499, Industrial
44、fans Mechanical safety of fans Guarding ISO 13709, Centrifugal pumps for petroleum, petrochemical and natural gas industries ISO 13850, Safety of machinery Emergency stop Principles for design ISO 13852, Safety of machinery Safety distances to prevent danger zones being reached by the upper limbs IS
45、O 13853, Safety of machinery Safety distances to prevent danger zones being reached by the lower limbs ISO 13854, Safety of machinery Minimum gaps to avoid crushing of parts of the human body ISO 14121-1, Safety of machinery Risk assessment Part 1: Principles ISO 14511, Measurement of fluid flow in
46、closed conduits Thermal mass flowmeters ISO 14687, Hydrogen fuel Product specification ISO 14847, Rotary positive displacement pumps Technical requirements ISO 15534-1, Ergonomic design for the safety of machinery Part 1: Principles for determining the dimensions required for openings for whole-body
47、 access into machinery ISO 15534-2, Ergonomic design for the safety of machinery Part 2: Principles for determining the dimensions required for access openings ISO 15649, Petroleum and natural gas industries Piping ISO/TR 15916, Basic considerations for the safety of hydrogen systems ISO 16528-1, Bo
48、ilers and pressure vessels Part 1: Performance requirements ISO 17398, Safety colours and safety signs Classification, performance and durability of safety signs BS ISO 22734-1:2008ISO 22734-1:2008(E) ISO 2008 All rights reserved 3IEC 60034-1, Rotating electrical machines Part 1: Rating and performa
49、nce IEC 60068-2-18:2000, Environmental testing Part 2-18: Tests Test R and guidance: Water IEC 60079-0, Explosive atmospheres Part 0: Equipment General requirements IEC 60079-2:2007: Explosive atmospheres Part 2: Equipment protection by pressurized enclosures “p“ IEC 60079-10, Electrical apparatus for explosive gas atmospheres Part 10: Classification of hazardous areas IEC 60079-14, Explosive atmospheres Part 14: Electrical
