Detail of GB/T 19774-2005

Introduction of GB/T 19774-2005

Specification of water electrolyte system for producing hydrogen 1 Scope This standard specifies the terms and definitions, classification and designation, technical requirements, test and inspection, marking and packaging of hydrogen production systems for producing hydrogen and oxygen by water electrolysis. This standard is applicable to stationary and mobile water electrolyte system for producing hydrogen for industrial and commercial use. This standard is applicable to filter-press type water electrolyte devices for producing hydrogen, including alkaline water electrolysis and solid polymer electrolyte water electrolysis. 2 Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated references, subsequent amendments (excluding corrections), or revisions, of any of these publications do not apply to this standard. However parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the document referred to applies. GB 150 Steel pressure vessels GB 151 Tubular heat exchangers GB/T 191 Packaging - Pictorial marking for handling of goods (eqv ISO 780) GB/T 629 Chemical reagent - Sodium hydroxide (eqv ISO 6353-2) GB/T 1972 Disc spring GB/T 2306 Chemical reagent - Potassium hydroxide (neq ISO 6353-2) GB/T 2829 Sampling procedures and tables for periodic inspection by attributes (apply to inspection of process stability) GB/T 3634 Industrial hydrogen GB/T 3863 Industrial oxygen GB/T 3985 Compressed asbestos fibre jointing GB/T 4237 Hot rolled stainless steel sheets and plates GB/T 4830 Industrial process measurement and control instruments - Pressure range and quality of air supply GB 4962 Technical safety regulation for gaseous hydrogen use GB 5099 Seamless steel gas cylinders ( neq ISO 4705) GB/T 5831 Determination of trace oxygen in the gases - Colorimetric method GB/T 5832.1 Determination of moisture in gases - Part 1: Electrolytic method GB/T 5832.2 Determination of moisture in gases - Part 2: Dew point method GB/T 6285 Determination of trace oxygen in gases - Electrochemical method GB 6654 Steel plates for pressure vessels GB/T 7445 Pure hydrogen, high purity hydrogen and ultra pure hydrogen GB/T 8163 Seamless steel pipes for liquid service (neq ISO 559) GB/T 8175 Guide for design of thermal insulation of equipments and pipes GB/T 8984.1 Determination of carbon monoxide, carbon dioxide and hydrocarbon in the gases - Part 1: Determination of carbon monoxide, carbon dioxide and mathane in the gases - Gas chromatographic method GB/T 8984.2 Determination of carbon monoxide, carbon dioxide and hydrocarbon in the gases - Part 2:Determination of total content of carbon monoxide, carbon dioxide and hydrocarbon in gases - Gas chromatographic method GB/T 11352 Carbon steel castings for general engineering purpose (neq ISO 3755) GB/T 12241 Safety valves - General requirements (eqv ISO 4126) GB 12337 Steel spherical tanks GB 12358 Gas monitors and alarms for workplace - General technical requirements GB/T 13306 Plates GB 13347 The quenching ability of flame arrester and its test method for petroleum gas piping systems GB/T 13384 General specifications for packing of mechanical and electrical product GB 14194 Rules for filling of permanent gas cylinders GB/T 14599 High purity oxygen GB/T 14975 Seamless stainless steel tubes for structure GB 16808 Technical requirements and test methods for combustibic gas alarm control units (neq ISO/TC 21/SC 3) GB 50030 Code for design of oxygen station GB 50057 Code for design protection of structures against lightning GB 50058 Specifications for the design of electric systems in places with explosion and fire GB 50177 Design code for hydrogen station GB 50235 Code for construction and acceptance of industrial metallic piping GB 50236 Code for construction and acceptance of field equipment, industrial pipe welding engineering GB 50275 Code for construction and acceptance of computer, fan and pump installation engineering GB 50316 Design code for industrial metallic piping JB 2111 Test method for bond strength of metallic coatings JB 2112 Test method for porosity of metal coatings - Wet filter paper placement method JB 2115 Test method for metallic coatings - Timing fluid flow method JB 2536 Pressure vessel painting, packaging and transportation JB 3836 Electrical apparatus for explosive gas atmospheres HGJ 202 Code for construction and acceptance of degreasing project TC 211 Asbestos cloth for insulation Supervision regulation on safety for gas cylinder Supervision regulation on safety technology for pressure vessel 3 Terms and definitions For the purpose of this standard, the following terms and definitions apply. 3.1 normal conditioncal gas conditions at a temperature of 0°C and a pressure of 101.3 kPa 3.2 diaphragm membrane which divides the electrolytic cell of the water electrolyzer into a cathode area and an anode area, and separates the produced hydrogen and oxygen to prevent the hydrogen and oxygen from penetrating each other, but allows ions to migrate 3.3 lower explosive limit minimum concentration of flammable and explosive gases, vapors or dusts in air/ oxygen to form an explosive gas mixture

Contents of GB/T 19774-2005

Foreword i 1 Scope 2 Normative references 3 Terms and definitions 4 Classification and designation 5 Technical requirements 5.1 Water electrolyte system for producing hydrogen 5.2 Single equipment 5.3 Piping and accessories 5.4 Electrical devices and wiring 5.5 Automatic control and monitoring 5.6 Installation and assembly 6 Test and inspection 7 Marking 8 Product accompanying documents 9 Packaging Annex A (Normative) Calculating gas output using current testing values Annex B (Normative) Testing of gas output by volumetric method Annex C (Normative) Testing of gas purity with analytical instruments Table 1 Equipment quality grade and DC electricity consumption per unit of hydrogen output Table 2 Raw water quality Table 3 Quality requirements for the electrolyte Table 4 Requirements for quality of circulating cooling water