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GB 50156-2021 PDF in English


GB 50156-2021 (GB50156-2021) PDF English
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GB 50156-2021: PDF in English

GB 50156-2021
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
UDC
P GB 50156-2021
Technical standard of fueling station
ISSUED ON: JUNE 28, 2021
IMPLEMENTED ON: OCTOBER 01, 2021
Issued by: Ministry of Housing and Urban-Rural Development of PRC.
State Administration for Market Regulation.
Table of Contents
Foreword ... 7
1 General provisions ... 10
2 Terms and abbreviations ... 10
2.1 Terms ... 10
2.2 Abbreviations ... 16
3 Basic requirements ... 16
4 Site choice of station ... 27
5 Layout of station ... 36
6 Oil fueling process and facilities ... 43
6.1 Oil tank ... 43
6.2 Oil dispenser ... 46
6.3 Pipeline system ... 46
6.4 Portable fuel device ... 50
6.5 Seepage prevention measures ... 52
6.6 Self-service fueling station (area) ... 54
7 LPG fueling process and facilities ... 55
7.1 LPG tank ... 55
7.2 Pump and compressor ... 58
7.3 LPG dispenser ... 59
7.4 LPG pipeline system ... 60
7.5 Unloading point of tank car ... 61
8 CNG fueling process and facilities ... 61
8.1 Process facilities of conventional CNG fueling station and primary CNG fueling station
... 61
8.2 Facilities of secondary CNG fueling station ... 65
8.3 Protection measures for CNG process facilities ... 65
8.4 CNG piping systems ... 68
9 LNG and L-CNG fueling process and facilities ... 69
9.1 LNG tank, pump and gasifier ... 69
9.2 LNG unloading process ... 73
9.3 LNG filling area ... 73
9.4 LNG pipeline system ... 74
10 High pressure hydrogen storage technology and facilities ... 75
10.1 General requirements ... 75
10.2 Hydrogen unloading facilities ... 75
10.3 Hydrogen pressure boost facilities ... 76
10.4 Hydrogen storage facilities ... 77
10.5 Hydrogen filling facilities ... 79
10.6 Pipeline and pipeline components ... 81
10.7 Safety protection of process system ... 83
11 Liquid hydrogen storage technology and facilities ... 86
11.1 Liquid hydrogen storage facilities ... 86
11.2 Liquid hydrogen unloading and pressurization facilities ... 89
11.3 Liquid hydrogen pipelines and low temperature hydrogen pipeline and pipeline
components ... 90
12 Fire protection system, water supply and drain system ... 92
12.1 Fire extinguishers ... 92
12.2 Water supply for fire protection ... 93
12.3 Water supply and drain system ... 95
13 Electric, alarm system and emergency cut-off system ... 96
13.1 Power supply ... 96
13.2 Lightning proof and anti-static measures ... 97
13.3 Charging facilities ... 99
13.4 Alarm system ... 99
13.5 Emergency shut-down system ... 100
14 Heating, ventilation, buildings and virescence ... 101
14.1 Heating and ventilation ... 101
14.2 Buildings ... 102
14.3 Virescence ... 105
15 Construction ... 105
15.1 General requirements ... 105
15.2 Material and equipment inspection ... 106
15.3 Civil engineering construction ... 109
15.4 Installation of equipment ... 112
15.5 Fabrication of oil, CNG and LNG pipeline ... 115
15.6 Fabrication of gaseous and liquified hydrogen pipeline ... 119
15.7 Fabrication of electrical equipment and instruments ... 122
15.8 Pipeline anti-corrosion and thermal insulation ... 124
15.9 Finishing documents ... 125
Appendix A The calculating points of clearance distance ... 128
Appendix B Classification of protection for civil buildings ... 129
Appendix C Classification and range of explosive danger zones ... 132
Appendix D Technical requirements for high pressure hydrogen pipes, low temperature
stainless steel pipes and their components ... 150
Explanation of wording in this standard ... 156
List of quoted standards ... 157
Technical standard of fueling station
1 General provisions
1.0.1 This standard is formulated, in order to implement relevant national guidelines
and policies in the design and construction of fueling stations, unify technical
requirements, achieve safety and applicability, advanced technology, economical
rationality.
1.0.2 This standard is applicable to the design and construction of newly built, expanded,
reconstructed automobile oil fueling stations, gas stations, oil and gas combined fueling
stations, oil and hydrogen combined fueling stations, gas and hydrogen combined
fueling stations, oil and gas and hydrogen combined fueling stations.
1.0.3 The design and construction of vehicle oil fueling, gas fueling, hydrogen fueling
stations shall not only comply with this standard, but also comply with the relevant
current national standards.
2 Terms and abbreviations
2.1 Terms
2.1.1 Fueling station
It is a place for fueling motor vehicles with vehicle fuel, including gasoline, diesel,
LPG, CNG, LNG, hydrogen, liquid hydrogen. It is a generic term of oil fueling
station, gas fueling station, oil and gas combined fueling station, oil and hydrogen
combined fueling station, gas and hydrogen combined fueling station, oil and gas
and hydrogen combined fueling station
2.1.2 Oil fueling station
A place which has oil storage facilities AND uses fuel dispensers to refuel motor
vehicles with gasoline (including methanol gasoline, ethanol gasoline), diesel and
other vehicle fuels.
2.1.3 Gas fueling station
It is a place which has gas storage facilities AND uses a gas dispenser to refill motor
vehicles with vehicle gas, such as LPG, CNG or LNG.
transportation; CNG and hydrogen can be supplied by long-tube trailers or tube-bundle
containers or pipeline delivery.
3.0.2 The scale of automobile oil fueling, gas fueling and hydrogen fueling stations
shall be determined according to resource conditions, market demand, surrounding
environment and other factors. Oil fueling stations, gas fueling stations, hydrogen
fueling stations can be jointly built, in accordance with Article 3.0.12 ~ Article 3.0.23
of this standard.
3.0.3 The portable fueling device shall not be used in places other than the enterprise's
own use, temporary or specific places; it shall be built separately. The design and
installation of oil fueling stations, which use portable fueling devices, shall comply with
the current industry standard "Technical specification for portable filling device in
automobile filling station" SH/T 3134 and the relevant provisions of Article 6.4 of this
standard.
3.0.4 The design of ethanol gasoline facilities in oil fueling stations shall not only
comply with the provisions of this standard, but also comply with the relevant
provisions of the current national standard "Code for design of automobile ethanol
gasoline storage and transportation" GB/T 50610.
3.0.5 Electric vehicle charging facilities can be set up in vehicle oil fueling, gas fueling
and hydrogen fueling stations. The design of electric vehicle charging facilities shall
not only comply with the provisions of this standard, but also comply with the relevant
provisions of the current national standard "Design code for electric vehicle charging
station" GB 50966.
3.0.6 For the CNG fueling stations, LNG fueling stations, urban natural gas master
stations and storage and distribution stations, LNG gasification stations, as well as the
CNG and LNG and urban natural gas receiving combined master stations, the design
and construction shall not only comply with the provisions of this standard, but also
comply with the relevant provisions of the current national standard "Code for design
of city gas engineering" GB 50028.
3.0.7 For the CNG fueling and natural gas transmission pipeline combined stations, the
design and construction shall not only comply with the provisions of this standard, but
also comply with the relevant provisions of the current national standard "Standard for
urban water conservation evaluation" GB 50183.
3.0.8 Vehicle oil fueling, gas fueling and hydrogen fueling stations can be set up to
operate non-oil business facilities, in accordance with relevant national provisions.
3.0.9 The grading of oil fueling stations shall comply with the provisions in Table 3.0.9.
1 The numbers in brackets in the Table are the safety distance -- between the buried
LPG storage tanks and buildings (structures) outside the station.
2 Outdoor transformation and distribution substation refers to the outdoor
transformation and distribution substation, which has a power system voltage of 35
kV ~ 500 kV and each transformer capacity above 10 MV • A, as well as the outdoor
step-down substation, which has a total transformer oil volume of industrial
enterprises greater than 5 t. Outdoor substations or transformers of other
specifications shall be determined, according to the production plant of category C
items.
3 The distance -- between the liquefied petroleum gas equipment and the entrances and
exits, doors and windows of the basement of the categories I, II, III protection objects
outside the station -- shall be increased by no less than 50%, according to the safety
distance of the categories I, II, III protection objects in this Table.
4 When the wall of a civil building of grade I and grade II fire resistance facing the gas
station is a solid wall, which has no door and without openings, THEN the distance -
- between the LPG equipment and the civil building -- shall not be less than the 70%
of the safety distance specified in this Table.
5 For gas fueling stations, which have integrally assembled above-ground LPG storage
tanks with a capacity less than or equal to 10 m3, the distance -- between the tank and
the buildings (structures) outside the station -- shall not be less than 80% of the safety
distance between the above-ground tanks for the grade III stations in this Table, and
shall not be less than 11 m.
6 The distance -- between the LPG storage tank and the independent civil building with
a construction area not exceeding 200 m2 outside the station -- shall not be lower than
80% of the safety distance of the category III protective objects in this Table,
meanwhile it shall not be less than the safety distance of the grade III station.
7 The grade I station, grade II station, grade III station in the Table include the grade
of the combined station.
8 H is the pole height or tower height of overhead communication lines and overhead
power lines.
4.0.6 The safety distance -- between CNG fueling stations, CNG process equipment in
various combined stations and buildings (structures) outside the stations -- shall not be
less than the provisions in Table 4.0.6.
the fire distance of the corresponding equipment in this Table.
2 The fire distance -- between hydrogen long-tube trailers, tube bundle containers and
buildings (structures) outside the station -- shall be determined according to the fire
distance of hydrogen storage vessels in this Table.
3 The grade I station, grade II station, grade III station in the Table include the grade
of combined stations.
4 Where there is a solid protective wall in compliance with Article 10.7.15 of this
standard, between the hydrogen process equipment in the Table and the buildings
(structures) outside the station, THEN, the corresponding safety distance (except for
important public buildings) shall not be less than 50% of the safety distance specified
in this Table, meanwhile it shall be not less than 8 m. The safety distance -- between
hydrogen storage wells, hydrogen compressor rooms (chambers), hydrogen dispenser,
liquid hydrogen unloading points and urban roads -- shall not be less than 5 m.
5 When the working pressure of the hydrogen equipment in the Table is greater than
45 MPa, the safety distance -- between the hydrogen equipment and the buildings
(structures) outside the station (excluding overhead communication lines and
overhead power lines) -- shall be increased by no less than 20% according to the safety
distance in this Table.
6 When the distance -- between the liquid hydrogen process equipment and the location
with open flame or sparks -- is less than 35 m, a solid wall which has a height of not
less than 2.2 m shall be set between the two.
7 The numbers in brackets in the Table are the safety distance -- between the liquid
hydrogen storage tank and the buildings (structures) outside the station.
8 H is the pole height or tower height of overhead communication lines and overhead
power lines.
4.0.9 In Table 4.0.4 ~ Table 4.0.8 of this standard, the starting and ending points for the
calculated spacing of equipment or buildings (structures) shall comply with the
provisions of Appendix A of this standard.
4.0.10 In Tables 4.0.4 ~ 4.0.8 of this standard, the division of protection categories for
important public buildings and civil buildings shall comply with the provisions of
Appendix B of this standard.
4.0.11 In Table 4.0.4 ~ Table 4.0.8 of this standard, the definitions of "open flame
location" and "spark emitting location", as well as the division of "category A, B, C, D,
E items" and "category A, B, C liquid" shall comply with the relevant provisions of the
current national standard "Code of design on building fire protection and prevention"
GB 50016.
4.0.12 The overhead power lines shall not cross the operation area of the vehicle oil
fueling, gas fueling and hydrogen fueling station. Overhead communication lines shall
not cross the operation area of hydrogen fueling facilities, in gas fueling stations and
hydrogen fueling combined stations.
4.0.13 The flammable medium pipelines not related to the vehicle oil fueling, gas
fueling, hydrogen fueling station shall not cross the land area of the vehicle oil fueling,
gas fueling, hydrogen fueling station.
5 Layout of station
5.0.1 Vehicle entrances and exits shall be set separately.
5.0.2 The parking spaces and roads in the station area shall comply with the following
requirements:
1 The width of the lane or parking space, in the station, shall be determined according
to the vehicle type. The width of single-lane or single-vehicle parking spaces, in
the primary CNG fueling station, shall not be less than 4.5 m; the width of double-
lane or double-vehicle parking spaces shall not be less than 9 m. The width of the
lane or parking space, single-vehicle lane or single-vehicle parking space, for the
oil fueling, gas fueling and hydrogen fueling stations for other types of vehicles
shall not be less than 4 m; the width of the double-lane or the double-vehicle
parking space shall not be less than 6 m.
2 The turning radius of the road within the station shall be determined according to
the driving vehicle type, which should not be less than 9 m.
3 The parking space in the station shall be on a flat slope; the slope of the road shall
not be greater than 8%, meanwhile it should be sloped towards the station.
4 Asphalt pavement shall not be used for the parking lot and road pavement in the
work area.
5.0.3 There shall be a boundary mark between the operation area and the auxiliary
service area.
5.0.4 In the oil, gas and hydrogen combined fueling station, diesel tanks should be
arranged between gas storage facilities or hydrogen storage facilities and gasoline tanks.
5.0.5 In the operation area of oil fueling, gas fueling, hydrogen fueling station,
there shall be no "open flame location" or "spark emitting location".
5.0.6 The layout of diesel tail gas treatment fluid filling facilities shall meet the
following requirements:
1 The equipment that does not meet the explosion-proof requirements shall be
arranged outside the explosion danger zone, meanwhile the distance from the
boundary line of the explosion danger zone shall not be less than 3 m;
2 The equipment that meets the explosion-proof requirements can be treated as a
diesel dispenser in the plane layout;
3 When the liquid storage tank (cylinder) or portable equipment of diesel tail gas
treatment fluid is arranged on the fueling island, the capacity shall not exceed 1.2
m3, meanwhile the liquid storage tank (cylinder) or portable equipment shall be
100 mm from the edge of both sides of the island and within 1.2 m of the island
end.
5.0.7 Electric vehicle charging facilities shall be arranged in the auxiliary service area.
5.0.8 The transformer and distribution rooms or outdoor transformers of oil fueling, gas
fueling and hydrogen fueling stations shall be arranged, outside the working area. The
starting calculation point of the substation and distribution room shall be openings, such
as doors and windows.
5.0.9 The station house shall not be arranged in the explosion danger zone. When the
station house is partly located in the operation area, the building area, etc. shall comply
with the provisions of Article 14.2.10 of this standard.
5.0.10 When non-oil business buildings or facilities are provided in the vehicle oil
fueling, gas fueling and hydrogen fueling station, they shall not be arranged in the
operation area. The fire distance from the flammable liquid or flammable gas
equipment in the station shall comply with the relevant provisions of Article 4.0.4
~ Article 4.0.8 of this standard, on the category III protective objects. When open
flame equipment is installed in facilities, such as commercial catering, car service,
driver's lounge in the station, it shall be equivalent to "open flame location" or
"spark emitting location".
5.0.11 The explosion hazardous area in the automobile oil fueling, gas fueling and
hydrogen fueling station shall not exceed the station area enclosure wall and the
available land boundary.
5.0.12 An incombustible solid wall should be set, between the process equipment of the
vehicle oil fueling, gas fueling and hydrogen fueling station and the buildings
(structures) outside the station. The height of the wall should not be lower than 2.2 m,
as relative to the terrain inside and outside the station. When the distance -- between the
process equipment of the vehicle oil fueling, gas fueling and hydrogen fueling station
and the buildings (structures) outside the station -- is greater than 1.5 times the safety
distance in Table 4.0.4 ~ Table 4.0.8 of this standard, meanwhile it is more than 25 m,
it may set a non-solid enclosure wall. The side facing the vehicular entry and exit roads
may or may not have a non-solid enclosure wall. For the external buildings (structures)
Vt - Storage tank volume (m3).
6.1.8 Static elimination objects installed in the tank shall be grounded. The grounding
resistance shall meet the relevant requirements in Article 11.2 of this standard.
6.1.9 There shall be a penetration gap -- between the inner wall and the outer wall of
the double-layer oil tank, that meets the requirements of leak detection.
6.1.10 For double-layer steel oil tanks, double-layer oil tanks with inner steel and outer
glass fiber reinforced plastics, double-layer oil tank with non-metallic anti-seepage
linings such as glass fiber reinforced plastics, it shall provide a leak detection standpipe
AND meet the following requirements: Regulation:
1 The detection standpipe shall be steel pipe; the diameter should be 80 mm; the wall
thickness should not be less than 4 mm;
2 The detection standpipe shall be located on the longitudinal centerline of the oil
tank top;
3 The bottom nozzle of the detection standpipe shall be connected with the gap
between the inner and outer walls of the oil tank; the top nozzle shall be equipped
with a dust cover;
4 The detection standpipe shall meet the requirements of manual detection and on-
line monitoring; meanwhile it shall ensure that any leakage in any part of the inner
and outer walls of the oil tank can be found.
6.1.11 Steel manhole covers shall be used for oil tanks.
6.1.12 When the oil tank is installed under the non-vehicle road, the soil thickness above
the tank roof shall not be less than 0.5 m. When it is installed under the roadway, the
tank roof should not be less than 0.9 m below the concrete pavement. The surrounding
of the steel oil tank shall be backfilled with neutral sand or fine soil; its thickness shall
not be less than 0.3 m. For the oil tank whose outer layer is made of glass fiber
reinforced plastic material, the backfill shall meet the requirements of the product
specification.
6.1.13 When the buried oil tank has the possibility of floating due to groundwater or
rainwater, it shall take measures to prevent the oil tank from floating.
6.1.14 Manholes of buried oil tanks shall be provided with operating wells. The
manhole wells located under the roadway shall adopt the special airtight manhole cover
and well seat under the roadway of gas stations.
6.1.15 Anti-overfilling measures shall be taken for unloading oil tanks. When the oil
reaches 90% of the oil tank capacity, it shall be able to trigger the high liquid level alarm
device. When the oil reaches 95% of the oil tank capacity, it shall be able to
automatically stop the oil from continuing to enter the tank. The high level alarm device
shall be located in a place, where the staff can easily observe it.
6.1.16 For a fueling station which is equipped with an oil vapor recovery system, the
oil tank in the station shall be equipped with a liquid level monitoring system, which
has high liquid level alarm function. The liquid level monitoring system of a single-
layer oil tank shall still have a leak detection function; the leak detection resolution
should not be greater than 0.8 L/h.
6.1.17 The anti-corrosion design of the outer surface of the steel oil tank, which is in
contact with the soil, shall comply with the relevant provisions of the current industry
standard "Design standard for anticorrosion coating of equipment and piping in
petrochemical industry" SH/T 3022; meanwhile the anti-corrosion grade shall not be
lower than the reinforced grade.
6.2 Oil dispenser
6.2.1 Oil dispensers shall not be installed indoors.
6.2.2 The fueling gun shall be a self-sealing fueling gun. The flow rate of the gasoline
fueling gun shall not exceed 50 L/min.
6.2.3 A safe break valve should be installed on the fueling hose.
6.2.4 For oil dispensers, which are supplied with positive pressure (submersible pump),
a shear valve shall be installed on the oil supply pipeline at the bottom. When the oil
dispenser is hit or caught fire, the shear valve shall be able to close automatically.
6.2.5 When an oil dispenser with multiple oil products is used, the gun placing position
on the fuel dispenser shall be marked with the text of each fuel product; the fueling gun
shall be color coded.
6.3 Pipeline system
6.3.1 Gasoline and diesel oil tank must be unloaded in a closed way. Gasoline tank
cars shall have an unloading oil vapor recovery system.
6.3.2 Each oil tank shall be provided with an oil unloading pipe and an oil unloading
interface. Each oil unloading interface and oil vapor recovery interface shall be clearly
marked.
6.3.3 The oil unloading interface shall be equipped with a quick connector and a sealing
cover.
6.3.4 The design of the vapor recovery system for oil unloading at gas stations shall
meet the following requirements:
1 The gasoline tank car shall adopt a balanced closed oil vapor recovery system, for
unloading oil to the oil tank in the station;
2 Each gasoline tank car can share a primary pipe for recovery of unloading oil vapor;
the nominal diameter of the primary pipe for vapor recovery should not be less than
100 mm;
3 Self-closing quick connectors and caps should be used for the interface of the oil
vapor recovery pipeline, for unloading oil. When non-self-closing quick connectors
are used, valves and caps shall be installed on the connecting pipeline, which is
close to the quick connectors.
6.3.5 The fueling station should adopt the fueling process of one pump supplying
multiple dispensers (guns), where a submersible pump is installed in the oil tank. When
a self-priming fuel dispenser is used, each fuel dispenser shall be individually equipped
with an oil inlet pipe and a bottom valve in the tank, according to the fuel type.
6.3.6 The fueling station shall adopt a fueling vapor recovery system.
6.3.7 The design of the fueling vapor recovery system shall meet the following
requirements:
1 Vacuum-assisted oil vapor recovery system shall be adopted;
2 An oil vapor recovery pipeline shall be installed, between the gasoline dispenser
and the oil tank. Multiple gasoline dispensers can share one primary oil vapor
recovery pipe; the nominal diameter of the primary oil vapor recovery pipe shall
not be less than 50 mm;
3 The fueling oil vapor recovery system shall take measures, to prevent the oil vapor
from flowing backward to the fueling nozzle;
4 The fuel dispenser shall have the function of recovering oil vapor; its gas-liquid
ratio should be set at 1.0 ~ 1.2;
5 At the connection between the bottom of the fuel dispenser and the oil vapor
recovery standpipe, a wire connected tee for testing liquid resistance and system
tightness shall be installed; a ball valve with a nominal diameter of 25 mm and a
plug shall be installed, on the short bypass pipe.
6.3.8 The connection pipe arrangement of the oil tank shall meet the following
requirements:
1 The connecting pipe shall be made of metal;
2 The connecting pipe shall be arranged on the top of the oil tank, wherein the oil
......
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.