GB 50156-2012 English PDF

GB 50156-2012: [Including 2014XG1] Code for design and construction of filling station
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GB 50156-2012 (2014 Edition)
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
UDC
P GB 50156-2012
Code for Design and Construction of Filling Station
(2014 Edition)
ISSUED ON: JUNE 28, 2012
IMPLEMENTED ON: MARCH 01, 2013
Issued by: Ministry of Housing and Urban-Rural Development of the
People's Republic of China;
General Administration of Quality Supervision, Inspection
and Quarantine of the People's Republic of China.
Table of Contents
1 General Provisions ... 10 
2 Terms, Symbols and Abbreviations ... 11 
2.1 Terms ... 11 
2.2 Symbols ... 15 
2.3 Abbreviations ... 16 
3 Basic Requirements ... 17 
4 Site Choice of Station ... 22 
5 Layout of Station ... 36 
6 Fuel Filling Process and Facilities ... 49 
6.1 Oil Tank ... 49 
6.2 Oil Dispenser ... 51 
6.3 Pipeline System ... 52 
6.4 Portable Fuel Device ... 56 
6.5 Seepage Prevention Measures ... 56 
6.6 Self-service Fuel Filling Station (Area) ... 58 
7 LPG Filling Process and Facilities ... 61 
7.1 LPG Tank ... 61 
7.2 Pump and Compressor ... 63 
7.3 LPG Dispenser ... 65 
7.4 LPG Pipeline System ... 65 
7.5 Unloading Point of Tank Car ... 66 
8 CNG Filling Process and Facilities ... 68 
8.1 Process Facilities of Conventional CNG Filling Station and Primary CNG
Filling Station ... 68 
8.2 Facilities of Secondary CNG Filling Station ... 71 
8.3 Protection Measures for CNG Process Facilities ... 72 
8.4 CNG Piping System ... 74 
9 LNG and L-CNG Filling Process and Facilities ... 76 
9.1 LNG Tank, Pump and Gasifier ... 76 
9.2 LNG Unloading Process ... 80 
9.3 LNG Filling Area ... 80 
9.4 LNG Pipeline System ... 81 
10 Fire Protection System, Water Supply and Drain system ... 83 
10.1 Fire Extinguishers ... 83 
10.2 Water Supply System for Fire Protection of LPG, LNG Facilities ... 84 
10.3 Water Supply and Drain System ... 86 
11 Electrical, Alarm System and Emergency Cut-off System ... 87 
11.1 Power Supply ... 87 
11.2 Lightningproof Anti-static Measures ... 88 
11.3 Charging Facilities ... 90 
11.4 Alarm System ... 91 
11.5 Emergency Cut-off System ... 91 
12 Heating, Ventilation, Buildings and Virescence ... 93 
12.1 Heating and Ventilation ... 93 
12.2 Buildings ... 94 
12.3 Virescence ... 96 
13 Construction ... 97 
13.1 General Requirements ... 97 
13.2 Material and Equipment Inspection ... 98 
13.3 Civil Engineering Construction ... 101 
13.4 Installation of Equipment ... 104 
13.5 Pipeline Fabrication ... 107 
13.6 Fabrication of Electrical Equipment and Instruments ... 111 
13.7 Pipeline Anti-Corrosion and Thermal Insulation ... 113 
13.8 Hand-over Documents ... 114 
Appendix A The Calculating Points of Clearance Distance ... 117 
Appendix B Classification of Protection for Civil Buildings ... 118 
Appendix C Classification and Range of Explosive Danger Zones ... 121 
Explanation of Wording in this Code ... 133 
List of Quoted Standards ... 134 
2 Terms, Symbols and Abbreviations
2.1 Terms
2.1.1 Filling station
General term of fuel filling station, gas filling station as well as fuel and gas combined
filling station.
2.1.2 Fuel filling station
Place where fuel storage facilities are provided, and a fuel dispenser is used to fill
vehicle fuel oil such as gasoline and diesel for motor vehicles and other convenient
services may be provided.
2.1.3 Gas filling station
Place where gas storage facilities are provided, and a gas dispenser is used to fill
vehicle fuel gas such as LPG, CNG or LNG for motor vehicles and other convenient
services may be provided.
2.1.4 Fuel and gas combined filling station
Place where fuel (gas) storage facilities are provided, vehicle fuel oil and vehicle fuel
gas may be filled for motor vehicles, and other convenient services may also be
provided.
2.1.5 Station house
Building for filling station management and operation, where other convenient
services may be provided.
2.1.6 Operational area
Area in the filling station where such equipment as fuel (gas) unloading facilities, fuel
(gas) storage facilities, fuel dispenser, gas dispenser, dispensing (bleeding) pole, vent
pipe (bleeder), combustible liquid tank car unloading parking space, vehicle-mounted
storage bottles group trailer parking space, LPG (LNG) pump and CNG (LPG)
compressor are arranged. The boundary line of this area is the boundary line of
equipment explosion danger area plus 3m, and is the outer edge of diesel-filling
equipment plus 3m.
2.1.7 Auxiliary service area
Area outside the operational area within the range of property line of filling station.
2.1.17 Vapor recovery system for gasoline unloading process
System that seals and recovers the vapor generated when the tank truck unloads oil
to the gasoline tank into the tank truck.
2.1.18 Vapor recovery system for filling process
System that seals and recovers the vapor generated when filling the gasoline vehicle
into the buried gasoline tank.
2.1.19 Portable fuel device
Ground fuel device that integrates the ground fire-proof and explosion-proof oil tank,
fuel dispenser, automatic fire sprinkler, etc. into a portable body.
2.1.20 Self-service fuel filling station (area)
Fuel filling station (area) where corresponding safety protection facilities are provided
and the customer may complete fuel filling for the vehicles at discretion.
2.1.21 LPG filling station
Place where vehicle LPG is filled in LPG automobile storage bottles; it is also a place
where other convenience services may be provided.
2.1.22 Buried LPG tank
Horizontal LPG tank whose tank top is lower than the ground within 4m around, buried
underground by directly covering soil or filling sand in the tank.
2.1.23 CNG filling station
General term of CNG conventional filling station, primary CNG filling station and
secondary CNG filling station.
2.1.24 CNG conventional filling station
Place where gas is taken from the natural gas pipeline out of the station, process
treated and pressurized, and then vehicle CNG is filled into the automobile CNG
storage bottle by the gas dispenser; it is also a place where other convenience
services may be provided.
2.1.25 Primary CNG filling station
Place where gas is taken from the natural gas pipeline out of the station, process
treated and pressurized, and then CNG is filled into the vehicle-mounted CNG storage
bottles group of secondary CNG filling station by the dispensing pole; it is also a place
where other convenience services may be provided.
2.1.35 CNG fixed storage facility
General term of ground-surface or underground CNG storage bottles (group) and
storage well installed at fixed positions.
2.1.36 CNG storage facility
General term of storage bottles (group), storage well and vehicle-mounted storage
bottles group.
2.1.37 Total volume of CNG storage facility
Sum of geometric volume of CNG fixed storage facilities and all the vehicle-mounted
CNG storage bottles (groups) at a full load or in an operation state.
2.1.38 Buried LNG tank
Horizontal LNG tank whose tank top is lower than the ground within 4m around,
buried underground by directly covering soil or filling sand in the tank.
2.1.39 Underground LNG tank
LNG tank hose tank top is 0.2m lower than the ground elevation within 4m around,
arranged in the tank.
2.1.40 Semi-underground LNG tank
LNG tank whose more than half tank shell is installed below ground within 4m around,
arranged in the tank.
2.1.41 Safety dike
Structure for retaining the overflowed flammable and combustible liquid in case of
LPG and LNG tank accident.
2.1.42 portable equipment
An equipment assembly for assembling all or part of LNG equipment such as LNG
tanks, gas dispensers, bleeders, pumps, gasifiers on a skid.
2.2 Symbols
A -- Sum of surface areas of metal objects immersed into the fuel;
3 Basic Requirements
3.0.1 Fuel and gas may be supplied to the filling station in the mode of tank car
transport, vehicle-mounted storage bottles group trailer transport or pipeline transport.
3.0.2 The filling station may be established jointly with the EV charging facilities. The
filling station may be established jointly according to the requirements of Articles
3.0.12~3.0.15 in this code. The following filing stations shall not be established jointly:
1 primary CNG fuel filling station and gas filling station;
2 primary CNG fuel filling station and LNG gas filling station;
3 LPG filling station and CNG filling station;
4 LPG filling station and LNG filling station.
3.0.3 Portable fuel devices may be applied to the enterprises' self-use, temporary or
specific places approved by the relevant government departments. For the fuel filling
stations with portable fuel devices, their design and installation shall meet the relevant
requirements of the current professional standard "Technical Specification for
Portable Filling Device in Automobile Filling Station" SH/T 3134 and Section 6.4 of this
code.
3.0.4 The design of ethanol gasoline facilities in the fuel filling station shall not only
comply with the requirements of this Code, but also the relevant requirements of the
current national standard "Code for Design of Automobile Ethanol Gasoline Storage
and Transportation" GB/T 50610.
3.0.5 The design of EV charging facilities shall not only comply with the
requirements of this code, but also those in the current relevant ones of the nation.
3.0.6 For the CNG filling station, LNG filling station and city natural gas storage and
distribution combined station, LNG vaporizing station, and CNG filling and city natural
gas receiving combined station, their design and construction shall not only comply
with the requirements of this code, but also the relevant ones of the current national
standard "Code for Design of City Gas Engineering" GB 50028.
3.0.7 The design and construction of the CNG filling and natural gas pipeline
combined station shall not only comply with the requirements of this code, but also the
relevant ones of the current national standard "Code for Fire Protection Design of
Petroleum and Natural Gas Engineering" GB 50183.
5 Layout of Station
5.0.1 Vehicle entrance and exit shall be arranged separately.
5.0.2 Parking space and road in the station area shall meet the following
requirements:
1 The width of the lane or parking space in the station shall be determined according
to the vehicle types. The width of single lane or single vehicle parking space in the
primary CNG filling station shall not be less than 4.5m; that of the dual lane or double
vehicle parking space shall not be less than 9m; that of lane or parking space, single
lane or single vehicle parking space in the filling station of other types shall not be less
than 4m; and that of dual lane or double vehicle parking space shall not be less than
6m.
2 The road turning radius in the station shall be determined according to the
travelling vehicle type, and should not be less than 9m.
3 The parking space in the station shall be of a horizontal slope; the road gradient
shall not be greater than 8% and should be oriented outside the station.
4 Parking space and road pavement in the operational area shall not adopt
bituminous pavement.
5.0.3 There shall be a boundary line mark between the operational area and the
auxiliary service area.
5.0.4 In the fuel and gas combined filling station, the diesel tank should be arranged
between LPG tank, CNG storage bottles (group) or LNG tank and gasoline tank.
5.0.5 There shall be no "open flame site" or "sparking site" in the operational
area.
5.0.6 The arrangement of diesel tail gas treatment liquid filling facilities shall meet
the following requirements:
1 The equipment not meeting the explosion-proof requirements shall be arranged
outside the explosion danger area, and shall not be less than 3m away from the
boundary line of the explosion danger area.
2 The equipment meeting the explosion-proof requirements may be treated as a fuel
dispenser during layout.
6.1.9 The oil tank shall adopt the steel manhole cover.
6.1.10 Where the oil tank is arranged under the non-carriageway, the covering soil
depth of the tank top shall not be less than 0.5m; where the oil tank is arranged under
the carriageway, the tank top should not be less than 0.9m lower than the concrete
pavement. Neutral sand or fine soil shall be backfilled around the steel oil tank, and its
thickness shall not be less than 0.3m; for the oil tank whose outer skin is of glass fiber
reinforced plastics material, the backfill shall meet the requirements of the product
instructions.
6.1.11 Where the buried oil tank tends to float upward due to the action of
underground water or rainwater, the measures preventing oil tank floating shall be
taken.
6.1.12 The manhole of the buried oil tank shall be arranged with an operation well.
The manhole well-arranged under the carriageway shall adopt the dedicated sealed
well cover and well base under the fuel filling station carriageway.
6.1.13 The overflow prevention measures shall be taken for the oil tank during oil
unloading. When the fuel reaches 90% of the oil tank capacity, the high-level alarm
device shall be capable of being actuated; when the fuel reaches 95% of the oil tank
capacity, the fuel filling shall be capable of being stopped automatically. The high-level
alarm device shall be located at a location easy for observation by the working
personnel.
6.1.14 For the filling station arranged with vapor recovery system, the oil tank in the
station shall be arranged with the liquid level monitoring system with a high-level
alarm function. The liquid level monitoring system of the single-skin oil tank shall also
be possessed of a leakage detection function, and its leakage detection resolution
should not be greater than 0.8L/h.
6.1.15 For the external surface of the steel oil tank exposed to soil, the anticorrosion
design shall meet the relevant requirements of the current profession...