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DGJ 08-2055-2017: Technical specifications of hydrogen refuelling stations for fuel cell vehicles
DGJ 08-2055-2017
DGJ
SHANGHAI ENGINEERING CONSTRUCTION SPECIFICATION
J 11330-2017
Technical Specification of Hydrogen
Fueling Station for Fuel Cell Vehicles
Drafting organizations: Shanghai Kunlun Xinao Clean Energy Co., Ltd.;
Tongji University;
Shanghai Sunwise New Energy Systems Co., Ltd.
Approving organization: Shanghai Municipal Commission of Housing and Urban-
Rural Development
Implementation date: August 1, 2017
Table of Contents
Foreword ... 2
1 General Principles ... 7
2 Glossary ... 8
3 Basic Regulation ... 10
4 Site Selection ... 12
5 General Layout ... 14
6 Hydrogen Fueling Technics and Main Equipment ... 18
6.1 Quality, pressure regulation and metering of hydrogen ... 18
6.2 Hydrogen storage system and equipment ... 18
6.3 Compression system and equipment ... 19
6.4 Hydrogen piping system ... 20
6.5 Hydrogen filling system ... 20
6.6 Instrument and control system ... 21
6.7 Hydrogen unloading site ... 21
6.8 Safety and security measures ... 22
7 Fire Protection Device and Water Demand for Fire Protection ... 24
8 Electric Installation ... 25
8.1 Power supply ... 25
8.2 Lighting and grounding ... 25
8.3 Electrostatic prevention ... 26
9 Structure, Ventilation and Planting ... 28
9.1 Structure ... 28
9.2 Ventilation ... 29
9.3 Planting ... 29
10 Construction and Inspection ... 30
10.1 General regulation ... 30
10.2 Material and equipment inspection ... 31
10.3 Civil Engineering ... 32
10.4 Process equipment installation ... 34
10.5 Pipeline installation ... 35
10.6 Electric instrument installation ... 36
10.7 Corrosive prevention ... 38
10.8 Final check and accept ... 39
Appendix A Distance Calculation Position ... 42
Appendix B Area Devision for Explosion Hazard Level in Fuel Cell Vehicle Hydrogen
Fueling Station ... 43
Appendix C Classification of Protected Civil Building ... 45
Explanation of Wording in this Specification ... 48
List of Quoted Standards ... 49
2 Glossary
2.0.1 Hydrogen fueling station
A dedicated place for fueling hydrogen into fuel cell vehicles.
2.0.2 Automobile gasoline and hydrogen fueling station
A dedicated place with oil storage facilities that can not only fuel gasoline and diesel for the
vehicles, but also can fuel vehicle-used compressed hydrogen or mixture of hydrogen and
natural gas for the fuel cell vehicles, or hydrogen-storing cylinder for the hydrogen internal
combustion engine vehicle or hydrogen and natural gas hybrid vehicle.
2.0.3 Automobile hydrogen and gas fueling station
A dedicated place with gas storage facilities that can not only fuel gas for vehicles, but also fuel
vehicle-used compressed hydrogen or mixture hydrogen and natural gas for the fuel cell
vehicles, or hydrogen internal combustion engine vehicles, or hydrogen and natural gas hybrid
vehicle.
2.0.4 Fuel cell vehicle
A vehicle that uses hydrogen as fuel and a fuel cell engine as a power source to transport goods
or people.
2.0.5 Hydrogen dispenser
A special equipment for fueling hydrogen storage bottles of fuel cell vehicles with hydrogen
and equipped with control, metering and pricing devices.
2.0.6 Hydrogen filling hose
A metal hose that connects the hydrogen dispenser and the hydrogen filling nozzle.
2.0.7 Hydrogen filling nozzle
A filling device with a hydrogen on-off function that is inserted into the receptacle of a fuel cell
vehicle.
2.0.8 Receptacle
A connector that connects the hydrogen filling nozzle and the vehicle-mounted hydrogen
storage system.
2.0.9 Vessels for hydrogen gas storage
A hydrogen storage device that is fixedly installed in a hydrogen fueling station and is used to
5 General Layout
5.0.1 The equipment arranged in the station shall have reliable infrastructure, and the buildings
and structures in the station shall meet the relevant requirements for seismic design in the
current national standards GB 50011 Code for Seismic Design of Buildings, and GB 50191
Design Code for Anti-Seismic of Special Structures.
5.0.2 The fence setting of the hydrogen fueling station shall comply with the following
provisions:
1 When the distance between the process facilities of the hydrogen fueling station and the
buildings and structures outside the station is less than or equal to 25m, and less than or
equal to 1.5 times the safe distance in Table 4.0.4, the adjacent side shall be set non-
combustible solid wall at a height of no less than 2.2m.
2 A non-physical fence should be set up on the side facing the entrance and exit roads.
5.0.3 The vehicle entrance and exit of the hydrogen fueling station shall be set up separately.
5.0.4 Roads within the station area shall comply with the following provisions:
1 The width of a single lane shall be no less than 3.5m, and the width of a double lane shall
be no less than 6m.
2 The turning radius of the road within the station is determined according to the model of
the hydrogen fueling vehicle; and should be no less than 9 m. The road slope shall be no
greater than 6%, and should be sloping toward the outside of the station. The unloading
parking space of the hydrogen transport device should be designed with a flat slope.
3 The loading and unloading parking spaces and road surfaces within the station shall use
non-fire floors.
5.0.5 A canopy should be set on the installation site of the hydrogen filling island and hydrogen
dispenser; the canopy should be made of non-combustible materials. The lower part of the
canopy should be flat and made into a structure that does not accumulate hydrogen.
5.0.6 The design of the hydrogen filling island shall comply with the following provisions:
1 The hydrogen filling island shall be 0.15m~0.2m higher than the floor of the hydrogen-
filling parking space.
2 The width of the hydrogen filling island should be no less than 1.2m.
5.0.7 The layout of the hydrogen transport unit in the hydrogen fueling station shall comply
with the following provisions:
6 Hydrogen Fueling Technics and Main Equipment
6.1 Quality, pressure regulation and metering of hydrogen
6.1.1 The quality of the hydrogen gas entering the hydrogen fueling station shall comply with
the high-purity hydrogen quality standards specified in the current national standard GB/T
3634.2 Hydrogen - Part 2: Pure Hydrogen, High-Purity Hydrogen and Ultra-Pure Hydrogen.
6.1.2 External hydrogen supply should be provided by hydrogen transport unit or pipeline to
supply hydrogen. When using pipelines to supply hydrogen, a pressure regulating device and a
flow metering device should be installed on the incoming pipeline.
6.1.3 For the equipment and pipelines in the hydrogen fueling station, wherever pressure needs
to be displayed, pressure detection points shall be set up, and a safety pressure relief device for
high-pressure gas pressure relief should be installed, when the pressure gauge is disassembled.
The measuring range of the pressure gauge shall be 2 times the working pressure, and the
accuracy of the pressure gauge shall be no lower than level 1.5.
6.2 Hydrogen storage system and equipment
6.2.1 The working pressure of the hydrogen storage system in the hydrogen fueling station shall
be determined based on the hydrogen charging pressure of the hydrogen fueling vehicle. When
the hydrogen charging pressure is 35MPa ~ 70 MPa, the working pressure of the hydrogen
storage system of the hydrogen fueling station is generally 40 MPa ~ 100 MPa. The hydrogen
storage device in the hydrogen fueling station should select a fixed hydrogen storage tank or
hydrogen storage cylinder group. Hydrogen storage devices shall comply with provisions of
relevant standards and specifications, and shall comply with the following provisions:
1 The manufacturing, inspection and testing of hydrogen storage device shall comply with
provisions of relevant national regulations; for hydrogen storage devices manufactured
by overseas companies, the manufacturing company must obtain relevant licenses.
2 The hydrogen storage device shall be designated by the manufacturer with specified colors
and markings.
6.2.2 The hydrogen storage device in the hydrogen fueling station should be set up in 2 ~ 3
levels according to the operating pressure. The hydrogen storage capacity at each level shall be
determined by the total hydrogen storage capacity of the hydrogen fueling station, the hydrogen
storage pressure at each level, the hydrogen filling pressure, and the hydrogen filling volume,
and filling time, etc.
6.2.3 Hydrogen storage devices of the same specification and model should be used in hydrogen
filling station.
6.2.4 The hydrogen storage device should be fixed on reliable infrastructure and should be
placed horizontally.
6.2.5 The hydrogen storage device shall be equipped with a safety pressure relief device
and connected to the corresponding vent stack.
6.2.6 On the side adjacent to the hydrogen storage device and the vehicle passage in the station,
a safety guardrail or other prevention measures shall be taken.
6.3 Compression system and equipment
6.3.1 The selection of the hydrogen compressor in the station shall be determined according to
the factors such as the pressure before and after hydrogen gas boosting, hydrogen filing capacity,
hydrogen storage parameters and etc. Hydrogen fueling station shall be equipped with backup
compressors.
6.3.2 The layout of the hydrogen compressor shall meet the following requirements:
1 The hydrogen compressors installed in the compressor room should be arranged in a single
row. The width of the main channel should be no less than 2m, and the clear distance
between the compressor and the wall should be no less than 1m.
2 The control system of the hydrogen compressor should be located in the adjacent control
room.
6.3.3 The safety protection of the compressor shall comply with the following provisions:
1 A safety valve shall be installed between the compressor inlet and outlet and the first cut-
off valve.
2 High-and-low pressure alarms shall be installed at the inlet of the compressor, and a high-
pressure over-limit shutdown device shall be installed at the outlet.
3 The cooling system of the compressor shall be equipped with temperature, pressure and
flow alarm and shutdown devices.
4 The lubricant system of the compressor shall be equipped with an alarm and shutdown
device for low oil pressure or high oil temperature.
5 When using a diaphragm compressor, a diaphragm rupture alarm and shutdown device
shall be installed.
6 The compressor inlet and outlet pipelines shall be equipped with replacement purge ports.
6.3.4 The condensed water discharged from the coolers, gas-water separators and hydrogen
pipelines at all stages of the hydrogen compressor shall be collected into the condensed water
discharge device through their respective dedicated drain devices and discharged to the
outdoors.
gun according to the filling requirements.
6.5.3 The hydrogen dispenser should not be installed indoors, but for users with special
purposes, the hydrogen dispenser can be installed indoors with adequate safety measures.
6.5.4 The hydrogen dispenser shall have filling, metering and control functions, and shall meet
the following requirements:
1 The rated working pressure of the hydrogen dispenser shall meet the filling pressure
requirements.
2 The hydrogen filling flow shall be less than 5kg/min.
3 A safety pressure relief device shall be installed.
4 Mass flow meter shall be used for measurement, the measurement accuracy shall be no
lower than Level-0.5, and the minimum graduation value shall be 10g.
5 An automatic cut-off valve shall be installed on the air inlet pipe of the hydrogen dispenser.
6.5.5 The fueling hose of the hydrogen dispenser shall be equipped with a break away coupling.
After the break away coupling is separated under the action of external force, both ends shall
be self-sealing.
6.5.6 A defense column (rail) shall be set up near the hydrogen dispenser, and the height of the
defense column (rail) shall be no less than 0.5m.
6.6 Instrument and control system
6.6.1 In the hydrogen filling station, in addition to the pressure and temperature instruments
that come with the equipment, pressure and temperature control instruments with signal
transmission functions should also be installed at corresponding locations and pre-cooling
devices according to process flow requirements.
6.6.2 A real-time monitoring system in operating status shall be installed in the hydrogen filling
station.
6.6.3 The hydrogen concentration detector and hydrogen flame detector shall be interlocked
with the control system in the hydrogen filling station.
6.7 Hydrogen unloading site
6.7.1 A break away coupling should be installed on the gas unloading pipeline connected to the
hydrogen transport unit.
6.7.2 The gas unloading pipeline connected to the hydrogen transport unit in the station shall
be equipped with filters and electrostatic grounding devices. The flow area of the filter screen
shall be no less than 5 times the cross-sectional area of the pipe; and shall be able to prevent
the passing of solid impurities with a particle size greater than 2??m.
6.7.3 The gas unloading parking space of hydrogen transport unit shall be equipped with fixed
devices.
6.8 Safety and security measures
6.8.1 Safety valves, emergency shut-off valves, and pressure gauges shall be installed on
the main hydrogen inlet pipe and the main hydrogen outlet pipe of the hydrogen storage
device.
6.8.2 Emergency shut-off valves shall be installed on the process pipeline between the hydrogen
storage device and the hydrogen dispenser.
6.8.3 The discharge exhaust gas of the safety valve of the hydrogen system in the hydrogen
fueling station shall be collected and reused according to provisions or connected to the
centralized safety discharge device; the opening pressure (Po) of the safety valve shall comply
with the following provisions:
1 When 1.8MPa< P???4.0MPa, Po = 1.lP.
2 When 4.0MPa< P???25.0MPa, Po = 1.05P.
3 Wh...