GB 50516-2010 English PDF

GB 50516-2010: [2021 Version] Technical code for hydrogen fuelling station
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GB 50516-2010
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
UDC
P GB 50516-2010
Technical Code for Hydrogen Fuelling Station
(Version 2021)
ISSUED ON: MAY 31, 2010
IMPLEMENTED ON: DECEMBER 1, 2010
Issued by: Ministry of Housing and Urban-Rural Development of the People's
Republic of China;
State Administration for Market Regulation
Table of contents
Technical Code for Hydrogen Fuelling Station ... 10 
1 General Provisions ... 10 
2 Terms ... 11 
3 Basic Requirements ... 14 
4 Location ... 16 
5 General Layout ... 18 
6 Hydrogen Fuelling Process and Equipment ... 23 
6.1 Hydrogen Quality and Metering ... 23 
6.2 Hydrogen Compressing Process and Equipment ... 24 
6.3 Hydrogen Storage System and Equipment ... 26 
6.4 Hydrogen Dispenser ... 28 
6.5 Hydrogen Pipelines and Accessories ... 30 
6.6 Materials in Contact with Hydrogen ... 32 
7 Fire Protection and Safety Facilities ... 34 
7.1 Fire Protection Facilities ... 34 
7.2 Safety Facilities for Hydrogen Fuelling Process System ... 34 
7.3 Alarm Device ... 35 
8 Architectural ... 37 
9 Water Supply and Drainage ... 39 
10 Electrical Installations ... 40 
10.1 Power Supply and Distribution ... 40 
10.2 Lightning and Grounding ... 40 
10.3 Protection of Electrostatic Discharge ... 41 
11 Heating and Ventilation ... 43 
12 Construction, Installation and Approval ... 44 
12.1 General Requirement ... 44 
12.2 Installation of Equipment ... 44 
12.3 Installation of Pipeline ... 47 
12.4 Installation of Electrical Instruments ... 49 
12.5 Construction Approval ... 51 
13 Requirements for Hydrogen System Operation and Management ... 54 
Appendix A Zones of Rating for Explosion Danger in Hydrogen Fuelling Station ... 56 
Appendix B ... 59 
Deleted ... 59 
Explanation of Wording in This Code ... 60 
List of Quoted Standards ... 61 
2 Terms
2.0.1 Hydrogen fuelling station
It refers to a specific place wherein the hydrogen cylinders of the hydrogen fuel cell vehicle or
hydrogen internal combustion engine automobile or hydrogen gas mixture fuel automobile are
charged with hydrogen fuel.
2.0.2 The system of hydrogen produced on site
It refers to the hydrogen production system installed in the hydrogen fuelling station, which is
usually a general name of hydrogen production, purification, compression and supporting
facilities.
2.0.3 Deleted.
2.0.4 Deleted.
2.0.5 Station house
It refers to the building which is used for the management and operation of the hydrogen
fuelling station.
2.0.6 Hydrogen fuelling island
It refers to the platform wherein the hydrogen fuelling machine OR the hydrogen and gas
mixture dispenser is installed.
2.0.7 Deleted.
2.0.8 Hydrogen dispenser
It refers to the special purpose equipment which charges hydrogen to the hydrogen cylinder
(tank) of the means of transportation, and is equipped with the functions of controlling,
metering and pricing.
2.0.9 Deleted.
2.0.9A Stationary pressure vessels for storage of hydrogen
It refers to pressure vessels in fixed installation for the storage of hydrogen fuel, which
include pressure vessels for gaseous hydrogen storage, liquid hydrogen storage and metal
hydride storage. They are abbreviated as hydrogen storage vessels.
2.0.10 Pressure vessels for storage of gaseous hydrogen
It refers to pressure vessels for the storage of gaseous hydrogen, which include necessary
safety accessories, pressure detection and display instruments, etc.
2.0.11 Cylinder assemblies for storage of gaseous hydrogen
It refers to a hydrogen storage facility which assembles several cylinder assemblies for
storage of gaseous hydrogen into an integral, which includes the corresponding connecting
pipes, valves and safety accessories and so on.
2.0.11A Pressure vessels for storage of liquid hydrogen
It refers to pressure vessels for the storage of liquid hydrogen, which includes adiabatic
systems, necessary safety devices, pressure and liquid level display instruments, etc.
2.0.11B Pressure vessels for storage of metal hydride
It refers to hydrogen storage pressure vessels containing reversible metal hydride, which
include heat exchange system, necessary safety accessories, pressure detection and display
instruments, etc.
2.0.11C Liquid hydrogen booster pump
It refers to an equipment of raising the pressure of liquid hydrogen to satisfy the pressure
required by the hydrogen dispenser.
2.0.12 Deleted.
2.0.13 Deleted.
2.0.14 Portable hydrogen compressor unit
It refers to the hydrogen compressor provided on one or more movable or transportable bases
(discs) as well as its auxiliary equipment, electrical device, and connection pipelines, etc.
2.0.15 Vent unit
It refers to the special purpose vent device which is used to collect the hydrogen or hydrogen
and gas mixture fuel as vented from the equipment and pipeline system of the hydrogen
fuelling station.
2.0.16 Condensate drain unit
It refers to the special purpose device which is used to collect the condensate as drained from
the equipment and pipeline system of the hydrogen fuelling station.
2.0.17 Break away coupling
It refers to the valve which can be separated into two sections under the effect of external
force and which has the self-sealing function after separation.
2.0.18 Tube trailers for gaseous hydrogen
It refers to road transport vehicles consisting of a hydrogen storage cylinder permanently
connected to a semi-trailer running mechanism or a shaped chassis through a supporting end
plate or a frame.
2.0.18A Tube skid container for gaseous hydrogen
It refers to a mobile pressure vessel for shipping compressed hydrogen, which consists of a
single hydrogen storage cylinder with a nominal water volume of 1,000 L ~ 4,200 L, which is
permanently connected to the frame through the support end plate, and is composed of
pipelines, safety accessories, instruments, loading and unloading accessories, etc.
2.0.19 Liquid hydrogen lorry truck
6 Hydrogen Fuelling Process and Equipment
6.1 Hydrogen Quality and Metering
6.1.1 The quality of the incoming hydrogen shall comply with the following stipulations:
1. The quality and inspection rules of hydrogen used for the hydrogen fuel cell vehicles
shall comply with the stipulations of the current national standard “Fuel Specification
for Proton Exchange Membrane Fuel Cell Vehicles - Hydrogen” GB/T 37244;
2. The quality and inspection rules of hydrogen used for hydrogen internal combustion
engine vehicles or hydrogen and natural gas hybrid fuel vehicles shall comply with
the relevant stipulations of the current national standard “Hydrogen - Part 1: Industrial
Hydrogen” GB 3634.1 and “Hydrogen and Compressed Natural Gas (HCNG)
Blended as Vehicle Fuel” GB/T 34537.
6.1.2 The quality of the outgoing hydrogen of the hydrogen fuelling station shall be
determined in accordance with the user's requirements and shall be not lower than the
following requirements:
1. The quality of the hydrogen which is used for the hydrogen fuel cell vehicles and so
on shall comply with the stipulations of the current national standard “Fuel
Specification for Proton Exchange Membrane Fuel Cell Vehicles - Hydrogen” GB/T
37244;
2. The quality of the hydrogen which is used for the hydrogen internal combustion
vehicles or hydrogen and natural gas hybrid fuel vehicles shall comply with the
relevant stipulations of the current national standard “Hydrogen - Part 1: Industrial
Hydrogen” GB 3634.1 and “Hydrogen and Compressed Natural Gas (HCNG)
Blended as Vehicle Fuel” GB/T 34537.
6.1.3 The metering of incoming hydrogen of the hydrogen fuelling station shall comply with
the following requirements:
1. When the tube trailers for gaseous hydrogen and tube skid container for gaseous
hydrogen are used to transport hydrogen, the calculation may be performed in
accordance with the structure and volume of the hydrogen storage cylinder, as well as
the starting and ending pressure, temperature and compression factor;
2. When the hydrogen pipeline is used to transport hydrogen, it is preferable to use the
mass flow meter for metering purposes;
3. When liquid hydrogen is used, the liquid level of the liquid hydrogen storage pressure
vessel shall be taken for metering; the liquid level measurement should adopt a
capacitive liquid level gauge or a measurement method with the same accuracy;
4. The maximum allowable error of the metering device of incoming hydrogen of the
hydrogen fuelling station shall be  1.5%.
6.1.4 The quality and metering requirements for the incoming natural gas in the mixed fuel
shall comply with the relevant stipulations of the current national standard “Compressed
natural Gas as Vehicle Fuel” GB 18047 and “Code for Design and Construction of
Automobile Gasoline and Gas Filling Station” GB 50156. The fuel mixture proportion of the
hydrogen natural gas mixture vehicle shall be determined in accordance with the requirements
of the mixture fuel vehicle engine.
6.1.5 As for the hydrogen used for the hydrogen fuel cell vehicles, if the quality of the
incoming hydrogen cannot reach to the quality criteria of the hydrogen for fuel cell, it shall
select the corresponding hydrogen purification device based on the purity or impurity content
of the incoming hydrogen, and it is preferable for the hydrogen purification device to be in
front of the hydrogen compressor.
6.1.6 Such procedures as purification, compression, metering, mixing, transportation, and
storage, etc., in the hydrogenation process system shall be equipped with the pressure
detection points, and it shall also be equipped with the over-pressure or low pressure alarm
device in accordance with the safety operation requirements.
6.1.7 The hydrogen fuelling station shall set up a process control system. The operation status
of the process equipment of the hydrogen fuelling station should be collaboratively optimized,
managed, controlled and monitored in accordance with the actual demands.
6.2 Hydrogen Compressing Process and Equipment
6.2.1 The hydrogen compression process system of the hydrogen fuelling station shall be
determined in accordance with the incoming hydrogen delivery method, and meanwhile
comply with the following provisions:
1. When using the tube trailers for gaseous hydrogen and tube skid container for gaseous
hydrogen to supply hydrogen, it shall provide the pressure boost hydrogen compressor
in the hydrogen fuelling station, and shall select the hydrogen compressor and the
hydrogen storage vessel based on the hydrogen storage or fuelling parameters;
2. When using the hydrogen pipeline to transport hydrogen, it shall select the hydrogen
compressor and the hydrogen storage vessel based on the incoming hydrogen pressure,
hydrogen storage or fuelling parameters;
3. When it is used for hydrogen fuel vehicles or hydrogen and natural gas hybrid fuel
vehicles, it shall select the hydrogen compressor and the hydrogen storage vessel
based on the parameters of the required hydrogen and the storage or fuelling
parameters.
6.2.1A The setting of the liquid hydrogen booster pump of the hydrogen fuelling station shall
comply with the following stipulations:
1. The type selection and number of the liquid hydrogen booster pumps shall be
determined in accordance with the hydrogen supply pressure and flow rate; it should
be in the form of a piston pump, and a backup liquid hydrogen booster pump should
be set up;
2. The vaporization capacity of the vaporizer shall be determined by the liquid hydrogen
flow and boost pressure, and the heat exchange form should be air temperature type;
3. A flexible connection shall be adopted between the liquid hydrogen storage pressure
vessel and the liquid hydrogen booster pump. The inner diameter of the pipeline
should not be smaller than the diameter of the liquid inlet of the pump. If necessary, a
certain slope shall be set in accordance with the process requirements.
3. It is preferable for the control panel and instrument control panel for the hydrogen
compressor to be located in a special-purpose control cabinet or an adjacent control
room.
6.3 Hydrogen Storage System and Equipment
6.3.1 The working pressure of the hydrogen storage system in the hydrogen fuelling station
shall be determined in accordance with the hydrogen charging pressure of the on-board
hydrogen storage cylinder. When the hydrogen charging pressure is 35 MPa, the working
pressure of the hydrogen storage system in the hydrogen fuelling station should not be greater
than 45 MPa; when the hydrogen charging pressure is 70 MPa, the working pressure of the
hydrogen storage system of the hydrogen fuelling station should not be greater than 90 MPa.
6.3.2 The mode of high-pressure hydrogen storage or liquid hydrogen storage should be
adopted for hydrogen storage in the hydrogen fuelling station, and other hydrogen storage
modes shall be adopted after technical and economic demonstration. The hydrogen storage
facility in the hydrogen fuelling station should select a special-purpose fixed hydrogen storage
pressure vessel.
6.3.2A The fixed hydrogen storage pressure vessel shall satisfy the requirements of pressure,
temperature, hydrogen storage capacity, service life and environment of application, etc., and
have sufficient safety margin to satisfy the requirements of safe application.
6.3.2B The stationary hydrogen storage pressure vessel shall be equipped with an operating
parameter recording device, and shall conduct real-time monitoring and automatic recording
of the number of pressure fluctuations, in which, the range of pressure, temperature and
pressure fluctuation exceeds 20% of the design pressure. The recording device shall satisfy
the requirement of keeping all the above-mentioned records intact in the long term.
6.3.2C The organizations using the stationary hydrogen storage pressure vessels shall use
stationary hydrogen storage pressure vessels that have obtained production licenses and have
passed the inspection. In addition, they...