GB/T 43674-2024 PDF English
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GB/T 43674-2024: General requirements of hydrogen fuelling stations---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT43674-2024
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 27.010
CCS F 19
General Requirements of Hydrogen Fueling Stations
Issued on: MARCH 15, 2024
Implemented on: OCTOBER 1, 2024
Issued by. State Administration for Market Regulation;
Standardization Administration of the People’s Republic of China.
Table of Contents
Foreword... 5
1 Scope... 6
2 Normative References... 6
3 Terms and Definitions... 9
4 Classification of Hydrogen Fueling Stations... 10
5 Hydrogen Supply Mode... 10
5.1 Basic Provisions... 10
5.2 Off-station Hydrogen Supply... 10
5.3 In-station Hydrogen Production... 12
6 Equipment and Assemblies... 13
6.1 General Requirements... 13
6.2 Hydrogen Unloading Equipment... 14
6.3 Hydrogen Compressor... 15
6.4 Hydrogen Storage Vessels... 15
6.5 Liquid Hydrogen Equipment and Accessories... 16
6.6 Hydrogen Dispenser... 18
6.7 Water Chilling Units... 19
6.8 Apparatuses and Instruments... 20
6.9 Hydraulic System and Instrument Air Supply System... 20
6.10 Hoses... 21
6.11 Valves... 21
6.12 Pipelines... 21
6.13 Safety Relief Device... 22
6.14 Venting System... 22
7 Hydrogen Quality... 23
7.1 General... 23
7.2 Hydrogen Quality Detection... 24
8 Electrical... 24
8.1 General Technical Conditions... 24
8.2 Electromagnetic Compatibility and Anti-electromagnetic Interference... 26
9 Control System... 26
9.1 Basic Requirements... 26
9.2 Emergency Stop Function... 27
General Requirements of Hydrogen Fueling Stations
WARNING---this document provides technical reference for hydrogen fueling stations.
The requirements for the approval, construction, acceptance and operation of hydrogen
fueling stations shall be subject to the relevant provisions of laws, regulations and
mandatory national standards.
1 Scope
This document specifies the classification, hydrogen supply mode, equipment and assemblies,
hydrogen quality, electrical, control system, delivery information, testing, signs and nameplates,
operation management, inspection and maintenance requirements of hydrogen fueling stations.
This document applies to hydrogen fueling stations that fuel with gaseous hydrogen. Hydrogen
fueling facilities for hydrogen-powered ships, trams, aircraft, engineering vehicles and power
generation equipment, etc. may also refer to this document for implementation.
2 Normative References
The contents of the following documents constitute indispensable clauses of this document
through the normative references in the text. In terms of references with a specified date, only
versions with a specified date are applicable to this document. In terms of references without a
specified date, the latest version (including all the modifications) is applicable to this document.
GB/T 2893.5 Graphical Symbols - Safety Colors and Safety Signs - Part 5.Principles and
Requirements for the Use of Safety Signs
GB 2894 Safety Signs and Guideline for the Use
GB(/T) 3836 (all parts) Explosive Atmospheres
GB/T 3836.15-2017 Explosive Atmospheres - Part 15.Electrical Installations Design, Selection
and Erection
GB/T 9574 Rubber and Plastics Hoses and Hose Assemblies - Ratios of Proof and Burst
Pressure to Maximum Working Pressure
GB/T 10543 Rubber Hoses and Hose Assemblies for Aircraft Ground Fueling and Defueling -
Specification
GB 12158 General Guideline for Preventing Electrostatic Accidents
GB/T 12241 Safety Valves - General Requirements
GB/T 12325 Power Quality - Deviation of Supply Voltage
HG 20202 Code for Construction and Acceptance of Degreasing Project
JJG 52 Elastic Element Pressure Gauges, Pressure-vacuum Gauges and Vacuum Gauges for
General Use
JJG 693 Alarmer Detectors of Combustible Gas
NB/T 10354 Tube Trailer
NB/T 10355 Tube Skid Container
SH/T 3503 Specification on Handover Technical Documentation for Petrochemical
Construction Projects
SH/T 3543 Specification on Technical Documentation for Construction Process of
Petrochemical Construction Projects
SH/T 3903 The Project Supervision Specification on Petrochemical Construction Work
SH/T 3904 Regulation for Acceptance of Completed Construction Projects in Petrochemical
Industry
ISO 19880-5 Gaseous Hydrogen - Fueling Stations - Part 5.Dispenser Hoses and Hose
Assemblies
3 Terms and Definitions
The terms and definitions defined in GB/T 24499, GB/T 29729, GB/T 31138, GB 50156 and
GB 50516 and the following are applicable to this document.
3.1 hydrogen quality
The product quality of hydrogen and liquid hydrogen.
NOTE. it usually includes hydrogen purity and impurity content in hydrogen.
3.2 hydrogen unloading cabinet
Specialized equipment that connects tube trailers for gaseous hydrogen / tube skid containers
for gaseous hydrogen, and has functions such as gas discharge, emergency cut-off, purging and
venting, etc.
3.3 hydrogen-contacting equipment
Equipment that uses hydrogen or liquid hydrogen as the medium.
4 Classification of Hydrogen Fueling Stations
4.1 In accordance with the hydrogen supply mode, they can be classified into. in-station
hydrogen production and hydrogen fueling stations, and off-station hydrogen supply and
hydrogen fueling stations.
4.2 In accordance with the operation mode, they can be classified into. self-use hydrogen
fueling stations and commercial hydrogen fueling stations.
4.3 In accordance with the pressure level of the service object, they can be classified into. 35
MPa level and 70 MPa level.
4.4 In accordance with the integration mode of the main in-station equipment, they can be
classified into. mobile hydrogen fueling facilities and fixed hydrogen fueling stations.
NOTE. mobile hydrogen fueling facilities are skid-mounted hydrogen fueling equipment in which
the equipment, assemblies and frames are integrated and fixed on the chassis, which is
convenient for transportation, simple installation and use on site.
5 Hydrogen Supply Mode
5.1 Basic Provisions
Hydrogen fueling stations may supply hydrogen through tube trailers for gaseous hydrogen
transportation, tube skid containers for gaseous hydrogen transportation, lorry trucks for liquid
hydrogen transportation, tank containers for liquid hydrogen transportation, pipeline
transportation or in-station hydrogen production.
5.2 Off-station Hydrogen Supply
5.2.1 Hydrogen supply through tube trailers / tube skid containers for gaseous hydrogen
5.2.1.1 Hydrogen fueling stations may supply hydrogen through tube trailers / tube skid
containers. Tube trailers / tube skid containers can discharge hydrogen into hydrogen storage
vessels in hydrogen fueling stations and directly leave, and they can also be used as hydrogen
storage vessels in the hydrogen fueling stations.
5.2.1.2 The tube trailers for gaseous hydrogen shall comply with the requirements of NB/T
10354; tube skid containers for gaseous hydrogen shall comply with the requirements of NB/T
10355 and shall comply with GB 50516 and the relevant provisions on special equipment.
5.2.1.3 The hydrogen unloading operation area of the tube trailers / tube skid containers shall
be flat, and the semi-trailer’s outriggers shall be supported to ensure safety and stability in the
parking state; at the same time, a horse stool shall be used for auxiliary support, and it shall be
away from vegetation, debris and flammable materials.
5.2.2.6 The unloading operation area of lorry trucks / tank containers for liquid hydrogen shall
be equipped with a limit device.
NOTE. the limit device usually includes a limit rod, a limit baffle, a parking block / similar object.
5.2.2.7 Parking spaces shall be set in the unloading operation area of lorry trucks / tank
containers for liquid hydrogen, and shall comply with the requirements specified in GB 50516.
5.2.2.8 The unloading operation area of lorry trucks / tank containers for liquid hydrogen shall
be away from any hydrogen storage vessels and high-pressure pipeline systems that may cause
jet flames due to leakage, including tube trailers / tube skid containers, etc.; the hydrogen
storage vessels and pipelines shall not be set at the downwind outlet of cold hydrogen discharge
for purging, etc.
5.2.3 Hydrogen supply through pipeline
5.2.3.1 The following ports should be included between the off-site hydrogen pipeline and the
hydrogen fueling stations.
a) Emergency and maintenance isolation;
b) Safety pressure relief;
c) Purging, replacement and sampling;
d) Pressure and (or) flow regulation;
e) Measuring instruments;
f) Filtering or purification equipment.
5.2.3.2 The port between the off-site hydrogen pipeline and the hydrogen fueling stations is
generally located inside the hydrogen fueling stations.
5.2.3.3 The connecting pipeline system between the off-site hydrogen pipeline and the
hydrogen fueling stations shall be reasonably equipped with valves and pipe fittings for pipeline
access, reasonably arranged pipelines, reasonably designed hydrogen flow rate, and
construction acceptance tests shall be carried out in accordance with the provisions.
5.2.3.4 The connecting pipeline system between the off-site hydrogen pipeline and the
hydrogen fueling stations shall comply with the requirements of GB 50177, GB 50156 and GB
50516.
5.3 In-station Hydrogen Production
The appropriate hydrogen production technology shall be selected based on the scale, safety,
continuity of hydrogen supply, economic efficiency, energy consumption and energy efficiency,
carbon emission management, etc. of the hydrogen fueling stations. In-station hydrogen
production shall comply with the requirements of GB 50516, GB 50177 and GB/T 34584, etc.
6 Equipment and Assemblies
6.1 General Requirements
6.1.1 Hydrogen-contacting equipment shall be equipped with a safety relief device, nitrogen or
helium purging and replacement system.
6.1.2 Before being put into use, hydrogen-contacting equipment shall be safely and effectively
purged with oil-free high-purity clean nitrogen to ensure that all particulate matters and organic
pollutants are removed before the device is started.
6.1.3 After the hydrogen-contacting equipment passes the purging, it shall be replaced with oil-
free high-purity clean nitrogen, until the oxygen content is less than 0.5%; at the same time, the
hydrogen pipeline system shall also be filled with nitrogen to maintain pressure, and the
pressure shall not be less than 0.2 MPa.
6.1.4 Before officially starting the fueling operation, it shall be ensured that the quality of the
hydrogen fueled meets the requirements specified in GB/T 37244.
6.1.5 The hydrogen pipeline system shall be equipped with automatic and manual emergency
shut-off valves to facilitate the isolation of different parts of the pipeline system in case of
emergency or maintenance.
6.1.6 Manual shut-off valves or exhaust valves shall be installed in a convenient position, so
that hydrogen can be cut off in time when necessary.
6.1.7 Valves, instruments and other assemblies that require maintenance shall not be directly
laid underground.
6.1.8 All assemblies that require regular maintenance should be easy to maintain and adjust on
site.
6.1.9 All parts that may be touched by staff or maintenance personnel should not have sharp
protrusions or edges.
6.1.10 During disassembly and installation, equipment and assemblies shall not affect each
other.
6.1.11 Before maintaining hydrogen-contacting equipment, the hydrogen supply shall be cut
off through isolation measures, and identification plates shall be set up, and the requirements
specified in GB 50516 shall be met.
6.1.12 When hydrogen-contacting equipment is regularly maintained and repaired, measures
shall be taken to prevent pipeline contamination.
6.2.2.3 Unloading operators shall wear personal protective equipment and use tools that do not
generate any static sparks. Before unloading operations, check whether the pipelines, valves
and safety accessories, etc. of the lorry trucks / tank containers for liquid hydrogen are intact,
and confirm the position of the emergency stop switch and the emergency operation mode.
6.2.2.4 Unloading operations shall not be carried out in severe weather, for example,
thunderstorms, to prevent static sparks and fires.
6.2.2.5 Liquid hydrogen unloading shall use vacuum conveying hoses with dust protection
measures. Keep the hoses clean, check the appearance for damage and wear on the ports, and
ensure reliable sealing at both ends. Before liquid hydrogen unloading, it shall be ensured that
the connecting valves of the conveying hose and the in-station liquid hydrogen storage pressure
vessels have been thoroughly purged and replaced with hydrogen and cooled with liquid
hydrogen.
6.2.2.6 After the unloading is completed, the residual liquid hydrogen in the liquid hydrogen
conveying hose shall be purged to the safe unloading system of the hydrogen fueling stations,
and the conveying hose shall be purged, replaced and re-warmed. The conveying hose can only
be disconnected after completion.
6.2.2.7 During the purging and cooling process of the conveying hose before unloading and the
purging and re-warming process of the hose after unloading is completed, the vehicle engine
shall be turned off and the surrounding conditions shall be closely observed to prevent danger
during the discharge of cold hydrogen.
6.3 Hydrogen Compressor
6.3.1 General requirements
6.3.1.1 The hydrogen compressor shall comply with the requirements specified in GB 50516
and GB 50156.
6.3.1.2 Potential risks shall be assessed for the installation, operation and maintenance of the
hydrogen compressor, and corresponding risk control measures shall be formulated.
6.3.2 Vibration and displacement
6.3.2.1 The compressor should be equipped with vibration and displacement sensors.
6.3.2.2 Vibration and displacement compensation shall be performed on the connections
between the hydrogen pipeline and the compressor inlet and exhaust port.
6.4 Hydrogen Storage Vessels
6.4.1 The hydrogen storage vessels for hydrogen fueling stations shall comply with GB 50516,
GB 50156 and the relevant provisions on special equipment.
6.4.2 Potential risks shall be comprehensively assessed for the layout, installation, operation
and maintenance of hydrogen storage vessels and their pipelines for hydrogen fueling stations,
and corresponding risk control measures shall be formulated.
6.4.3 The hydrogen storage vessels for hydrogen fueling stations shall be equipped with safety
relief devices.
6.4.4 Accumulation of flammable liquids under the hydrogen storage vessels for hydrogen
fueling stations shall be prevented.
6.5 Liquid Hydrogen Equipment and Accessories
6.5.1 General requirements
6.5.1.1 Liquid hydrogen storage pressure vessels shall comply with GB 50516, GB 50156 and
the relevant provisions on special equipment.
6.5.1.2 The materials of equipment and components and parts used for storing and conveying
liquid hydrogen and cryogenic hydrogen shall have good hydrogen compatibility.
6.5.1.3 The base or support of the liquid hydrogen storage pressure vessels shall be made of
non-combustible materials that can withstand the low temperature damage caused by liquid
hydrogen leakage, and the base or support shall have sufficient fire resistance.
6.5.1.4 The support and foundation of the liquid hydrogen storage pressure vessels shall prevent
liquid hydrogen or other liquid fuels from accumulating under the vessels.
6.5.2 Cryogenic valves, pipelines and pipe fittings
6.5.2.1 Valves, pipelines and pipe fittings used at low temperatures shall comply with the
requirements specified in GB 50156, GB 50516 and GB/T 29729.
6.5.2.2 Pipelines and equipment that operate below the air condensation temperature without
thermal insulation measures shall not be installed on the surface of asphalt or other combustible
materials, and a fixed liquid collection tray can be installed below.
6.5.3 Safety relief device
6.5.3.1 Liquid hydrogen storage pressure vessels and related equipment shall be equipped with
a combined safety relief device, including a combination of a full-open safety valve and a full-
open safety valve, and a combination of a full-open safety valve and a bursting disc to prevent
overpressure.
6.5.3.2 The safety relief device shall comply with the requirements specified in GB 50156, GB
50516 and GB/T 29729.
6.5.3.3 A safety relief device shall be installed at the liquid hydrogen retention point to prevent
the risk of overpressure caused by thermal expansion, and shall comply with the requirements
specified in GB 50156.
6.5.6.1 All liquid hydrogen-related vent pipes with the same discharge pressure (including vent
pipes for safety relief devices and purging and replacement devices) shall be connected to a
centralized vent pipe.
6.5.6.2 The liquid hydrogen vent pipe shall not be connected to the vent pipes of other non-
liquid hydrogen equipment to prevent hydrogen from flowing back into the liquid hydrogen
pipeline. The venting system of the liquid hydrogen storage pressure vessel should be
independently set up and should not be connected to the venting system of the high-pressure
hydrogen pipeline, liquid hydrogen booster pump and hydrogen compressor.
6.5.6.3 The venting pipeline of cryogenic hydrogen shall not be equipped with thermal
insulation measures to enable the cryogenic hydrogen to exchange heat with the environment
to the maximum extent, so as to reduce the possibility of flammable vaporous clouds during the
discharge process. The design of the venting pipeline of cryogenic hydrogen shall not limit the
expansion and contraction caused by temperature changes.
6.5.6.4 When multiple venting pipelines are connected to the centralized vent pipe, measures
shall be taken to avoid the dangers of hydrogen reflux and leakage during maintenance or
replacement of valves.
6.5.6.5 The centralized vent pipe shall not be equipped with any components that may hinder
the flow of hydrogen and any devices that may cause ice blockage or blockage of the pipeline.
A drain outlet shall be set at the bottom of the centralized vent pipe, and drainage shall be
regularly carried out to prevent rain, snow, etc. from blocking the drain outlet.
6.5.7 Purging and replacement
After the liquid hydrogen device is qualified in purging, helium or room-temperature hydrogen
should be used for purging and replacement.
6.5.8 Layout of liquid hydrogen storage pressure vessels
6.5.8.1 The liquid hydrogen storage pressure vessels shall be installed in a well-ventilated
location.
6.5.8.2 The liquid hydrogen storage pressure vessels shall be as close as possible to the
unloading control device.
6.5.8.3 The outlet pipeline of the liquid hydrogen storage pressure vessels shall be successively
equipped with a manual shut-off valve (for example, a stop valve or a ball valve, etc.), an
emergency shut-off device, a third valve or a loading and unloading joint from the vessel to the
outside.
6.6 Hydrogen Dispenser
6.6.1 The hydrogen dispenser shall comply with the requirements specified in GB/T 31138.
6.6.2 The fueling protocol shall comply with the requirements specified in GB/T 42855.
6.6.3 Under different initial conditions and environmental conditions, the hydrogen dispenser
shall select an appropriate fueling rate, and the maximum flow rate should be determined in
accordance with the volume of the on-board hydrogen storage system and the target fueling
time.
6.6.4 When the pressure of the hydrogen fueling pipeline drops for unknown reasons, the
hydrogen dispenser shall take measures to prevent hydrogen leakage from causing safety
hazards.
6.6.5 If the hydrogen dispenser uses a programmable controller for fueling control, a controller
fault detection device shall be configured.
6.6.6 The hydrogen dispenser should be equipped with an inclination or vibration sensor.
6.6.7 The hydrogen dispenser discharge system shall be equipped with a port for venting the
hydrogen sampling device.
6.6.8 The hydrogen fueling gun, hydrogen fueling hose and hydrogen dispenser shall be reliably
connected and have good conductivity.
6.6.9 The hydrogen dispenser should take protective measures to prevent unauthorized use.
6.6.10 All components in the hydrogen dispenser shall be connected to the same potential and
grounded. The grounding resistance of the hydrogen dispenser shall meet the requirements of
GB 50516.The total grounding resistance of the hydrogen dispenser shall be less than 10 .
6.6.11 When the hydrogen dispenser is in standby mode, the hydrogen fueling hose and
hydrogen fueling gun shall be placed within the anti-collision protection range.
6.6.12 Protective measures should be set to prevent the hydrogen fueling hose from directly
contacting the ground and to prevent the hose from being excessively bent.
6.6.13 Measures shall be taken to prevent the accumulation of environmental substances, such
as snow, ice, and sand on the hydrogen fueling gun.
6.7 Water Chilling Units
6.7.1 Water chilling units should be used as cooling facilities for the hydrogen fueling stations.
The water chilling units shall be able to adapt to outdoor environments and meet the
requirements for rain, dust and snow protection. The overall protection degree of the equipment
shall not be lower than IP55.
6.7.2 The water chilling units should be skid-mounted, with integrated water pumps and water
tanks, and the mode of air cooling should be used. The head of the water pump shall be able to
meet the demands of water circulation and should not be lower than 30 m.
6.7.3 The water chilling units should be non-explosion-proof models and installed beyond
hazardous explosion areas. If installed in the hazardous explosion areas, the water chilling units
6.10 Hoses
6.10.1 The design pressure of the hydrogen hoses shall be 1.3 times the nominal working
pressure, and the minimum burst pressure shall be 4.0 times the nominal working pressure.
NOTE. hydrogen hoses include hydrogen unloading hoses and hydrogen fueling hoses.
6.10.2 The inner tube of the hydrogen hoses shall be made of a material with good hydrogen
compatibility, and polytetrafluoroethylene (PTFE) shall not be used.
6.10.3 The inner surface of the hydrogen hoses and the sealing surface of the joints shall be
smooth and cleaned with high purity. In accordance with the requirements specified in HG
20202, compatible cleaning solvents shall be used, and ultrasound should be combined to
remove traces of grease, combustible materials and particles, and the surface oil content shall
not exceed 120 mg/m2.
6.10.4 Hydrogen hoses shall have static conductivity and meet the requirements specified in
GB 12158.
6.10.5 Hydrogen hoses shall have product certificates (indicating quantity and inspection mark,
inspection date), product instructions and packing lists, etc. The product model, name, working
pressure, joint type and inner diameter parameters, trademark, manufacturer name, factory
address, standard serial No., manufacturing date (or batch number) shall be indicated. If spare
parts are provided, there shall also be a spare parts list.
6.10.6 Hydrogen hoses shall be prevented from excessive twisting during use.
6.10.7 Both ends of the hydrogen unloading hose shall be equipped with anti-swing ropes / anti-
collapse and detachment chains.
6.10.8 Hydrogen unloading hoses shall be equipped with protective measures.
6.10.9 Hydrogen fueling hoses shall meet the requirements of ISO 19880-5.Hydrogen fueling
hoses shall not have cuts, cracks, bulges, bubbles, or twists. Once found, they shall be
immediately stopped from being used.
6.11 Valves
6.11.1 Hydrogen valves used in the hydrogen fueling stations shall comply with the
requirements of GB/T 42177, GB 50516 and GB 50156.
6.11.2 Safety valves shall comply with the requirements of GB/T 42177 and GB/T 12241.
6.12 Pipelines
6.12.1 Hydrogen pipelines in the hydrogen fueling stations shall comply with the requirements
of GB/T 14976, GB 50177, GB/T 29729, GB 50516 and GB 50156, and shall meet the expected
cycle life requirements.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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