Powered by Google www.ChineseStandard.net Database: 189759 (16 Jun 2024)

GB 50156-2012 PDF in English


GB 50156-2012 (GB50156-2012) PDF English
Standard IDContents [version]USDSTEP2[PDF] delivered inName of Chinese StandardStatus
GB 50156-2012English230 Add to Cart 0-9 seconds. Auto-delivery. [Including 2014XG1] Code for design and construction of filling station Obsolete
GB 50156-2021English1505 Add to Cart 0-9 seconds. Auto-delivery. Code for design and construction of filling station Valid

PDF Preview

Standards related to: GB 50156-2012

GB 50156-2012: PDF in English

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 professional standard
"Technical Specification for the Coating Anticorrosion of Equipment and Piping in
Petrochemical Industry" SH 3022 and the anticorrosion grade shall not be less than
the strengthening grade.
6.2 Oil Dispenser
6.2.1 The fuel dispenser shall not be arranged in the room.
6.2.2 The dispenser nozzle shall adopt the self-sealed type, and the flow of the
be separately arranged with an oil inlet pipe and a bottom valve in the tank according
to the dispensing category.
6.3.6 Where the vapor recovery system for filling process is adopted in the fuel filling
station, its design shall meet the following requirements:
1 The vacuum auxiliary vapor recovery system shall be adopted.
2 The vapor recovery pipeline shall be arranged between the gasoline dispenser
and the oil tank; several gasoline dispensers may share one vapor recovery main
whose nominal diameter shall not be less than 50mm.
3 The vapor recovery system for filling process shall be provided with the measures
preventing the vapor back flowing to the dispenser nozzle.
4 The fuel dispenser shall be provided with the vapor recovery function, and its
vapor liquid ratio should be set as 1.0~1.2.
5 A silk-connected tee joint for detecting liquid resistance and system leak tightness
shall be installed at the joint of the fuel dispenser bottom and the vapor recovery riser,
and a ball valve with a nominal diameter of 25mm and a plug shall be arranged on the
bypass short pipe of the tee joint.
6.3.7 The arrangement of the joint pipe of the oil tank shall meet the following
requirements:
1 The joint pipe shall be of metal material.
2 The joint pipe shall be arranged at the top of the oil tank, therein, the installation
opening of the oil inlet joint pipe, oil outlet joint pipe or immersed oil pump shall be
arranged on the manhole cover.
3 The oil inlet pipe shall extend into the tank 50mm~100mm away from the tank
bottom. The bottom of the oil inlet riser shall be a 45° oblique pipe orifice or a
T-shaped pipe orifice. There shall be no opening connected with the gaseous phase
space of the oil tank in the oil inlet pipe wall.
4 The oil inlet of the immersed oil pump in the tank or the bottom valve in the tank
leading to the self-priming fuel dispenser pipeline shall be 150mm~200mm higher
than the tank bottom.
5 The gauge hatch of the oil tank shall be equipped with a gauge cap with a lock.
The joint pipe at the lower part of the gauge hatch should extend downward into the
tank 200mm away from the tank bottom, and shall be provided with the technical
measures making the liquid level in the joint pipe consistent with that in the tank
during the scaling.
7 The diesel tail gas treatment liquid filling equipment pipeline shall adopt the
austenitic stainless steel pipeline or other pipelines meeting the conveying of diesel
tail gas treatment liquid.
6.3.12 The unloading connecting hose and vapor recovery connecting hose of the
tank truck for unloading shall adopt the electrostatic conductive oil-resistant hose
whose bulk resistivity shall be less than 108Ωꞏm and the surface resistivity shall be
less than 1010Ω, or the rubber hose enclosed with metal wire (net).
6.3.13 All the process pipelines in the fuel filling station shall be buried except
those must be exposed above the ground. Where pipe trench laying is adopted,
the pipe trench must be filled and compacted with neutral sand or fine soil.
6.3.14 The oil unloading pipeline, vapor recovery pipeline for unloading, vapor
recovery pipeline for filling and horizontal oil tank vent pipe shall be exposed to the
buried oil tank. The gradient of the oil unloading pipeline shall not be less than 2‰,
and that of the vapor recovery pipeline for unloading, vapor recovery pipeline for filling
and horizontal oil tank vent pipe shall not be less than 1%.
6.3.15 If the gradient of the vapor recovery pipeline for filling exposed to the oil tank
fails to meet the requirements of Article 6.3.14 of this code due to the restriction of
topography, a liquid trap may be arranged at the position close to the oil tank, and the
gradient of the pipeline exposed to the liquid trap shall not be less than 1%.
6.3.16 The buried depth of the buried process pipeline shall not be less than 0.4m.
For the pipeline laid on concrete site or under the road, the pipeline top shall not be
less than 0.2m lower than the lower surface of the concrete layer. The neutral sand
with a thickness not less than 100mm or fine soil shall be backfilled around the
pipeline.
6.3.17 Any process pipeline shall not penetrate or cross the buildings (structures)
such as station house having no direct relation with the pipeline; where the pipeline
intersects with pipe trench, cable trench or drainage ditch, the corresponding
protective measures shall be taken.
6.3.18 The design and installation of the thermoplastic pipeline without electrostatic
conductivity shall not only comply with the relevant requirements of Article
6.3.1~Article 6.3.17 of this code, but also the following ones:
1 The flow rate of the fuel in the pipeline shall be less than 2.8m/s.
2 The incomplete buried parts of the pipeline in the manhole well, at the bottom slot
of fuel dispenser or at the oil unloading opening shall adopt the shortest installation
length and the minimum joints on the premise of meeting the pipeline connection
requirements.
one of the following seepage-proof modes shall be adopted for its buried oil tank:
1 Single-layer oil tank arranged with seepage-proof tank pool;
2 Double-skin oil tank adopted.
6.5.3 The design of seepage-proof tank pool shall meet the following requirements:
1 The seepage-proof tank pool shall be subjected to integral pouring with
seepage-proof reinforced concrete and meet the relevant requirements of the current
national standard "Technical Code for Waterproofing of Underground Works" GB
50108.
2 The seepage-proof tank pool shall be arranged with separation pool according to
the quantity of oil tanks. The oil tank shall not be more than two in one separation
pool.
3 The wall top of seepage-proof tank pool shall be higher than the elevation of tank
top in the pool; the pool bottom should be 200mm lower than the design elevation of
tank bottom; the spacing between wall surface and tank wall shall not be less than
500mm.
4 The internal surface of seepage-proof tank pool shall be lined with glass fiber
reinforced plastics or other seepage-proof layers made of other materials.
5 The space in the seepage-proof tank pool shall be backfilled with neutral sand.
6 Measures that prevent rain, surface water and fuel leaked externally from seeping
into the pool shall be taken on the upper part of seepage-proof tank pool.
6.5.4 Each separation pool of the seepage-proof tank pool shall be arranged with
detection risers which shall be arranged according to the following requirements:
1 The detection riser shall be made of fuel-resistant and corrosion-resistant pipes;
its diameter should be 100mm; its wall thickness shall not be less than 4mm.
2 The lower end of detection riser shall be placed at the bottom of seepage-proof
tank pool; the pipe orifice at the upper part shall be 200mm higher than the design
ground in the tank area (except the oil tanks arranged under the lane).
3 The scope from the detection riser to the tank top elevation in the pool shall be the
filtering pipe segment which shall be able to allow the leaking liquid (fuel or water) on
any layer in the pool entering the detection pipe and prevent the sediment in.
4 Gravel with 10mm~30mm grain size shall be backfilled around the detection riser.
5 The detection opening shall be provided with the identifications and protective
"self-service" identifications at the entrance of fuel filling station and at fuel filling
island; vehicle fuel filling guidelines in the self-service fuel filling station (area) shall be
marked obviously.
6.6.2 The fuel category, mark number and safety caution shall be marked on the
obvious positions near the fuel filling island and fuel dispenser.
6.6.3 Gasoline and diesel filling functions should not be simultaneously arranged on
the same fuel filling parking space.
6.6.4 The self-service fuel dispenser shall not only meet the requirements of Section
6.2 of this Code, but also meet the following requirements:
1 The device eliminating human body electrostatic charge shall be arranged.
2 Self-service fuel filling operation instructions shall be indicated.
3 Audio frequency prompting system shall be arranged to prompt the fuel variety,
mark number and operation instruction after the fuel truck nozzle is lifted.
4 The fuel truck nozzle shall be arranged with functions of stopping fuel filling
automatically when dropping and self-closing function when there is no pressure.
5 The emergency stop switch shall be arranged.
6.6.5 The self-service fuel filling station shall be arranged with video monitoring
system which shall cover the fuel filling area, fuel unloading area, manhole, cashier
area, convenient store and the like. The monitoring function of video equipment shall
not be influenced due to the shading of vehicles.
6.6.6 The Sales Office of self-service fuel filling station shall be arranged with the
monitoring system which shall be possessed of the following monitoring functions:
1 The shop assistant may confirm the service conditions of each self-service fuel
dispenser through the monitoring system.
2 The system may respectively control the fuel filling and stopping states of each
self-service fuel dispenser.
3 The operation of all fuel dispensers may be stopped by starting "emergency
disconnecting switch" in the case of emergency situations.
4 The system may dialogue with the customer separately and guide the operation.
5 The system may broadcast the entire fuel filling site.
6.6.7 The self-service fuel filling station operating gasoline business shall be
7 LPG Filling Process and Facilities
7.1 LPG Tank
7.1.1 The design of LPG tank in the gas filling station shall meet the following
requirements:
1 The tank design shall meet the relevant requirements of the current national
standard "Steel Pressure Vessels" GB 150, "Steel Horizontal Vessels on Saddle
Supports" JB 4731 and "Supervision Regulations on Safety Technology for Stationary
Pressure Vessels" TSGR 0004.
2 The design pressure of tank shall not be less than 1.78MPa.
3 Height of the connecting pipe at the liquid drain pipeline port of tank shall be
determined according to the requirements of the selected filling pump. Liquid feed
pipeline and liquid phase return pipeline should be connected to the vapor phase
space in the tank.
7.1.2 Arrangement of the closing valves at the root of tank shall meet the following
requirements:
1 Check valves shall be arranged on the liquid feed pipe, liquid phase return
pipe and vapor phase return pipe of tank.
2 Restrictor valves should be arranged on the liquid drain pipe and vapor phase
balance pipe for unloading.
7.1.3 Arrangement of the pipeline system and auxiliary equipment of tank shall meet
the following requirements:
1 The tank must be equipped with fully-started sealed spring safety valves.
The pipeline between safety valve and tank shall be equipped with shutoff
valves which shall be in the lead-seal open state under the normal operation.
Bleeder orifice of the ground-surface tank shall be 2m or above higher than the
operating platform of tank and 5m or above higher than the ground. Bleeder
orifice of the underground tank shall be 5m or above higher than the ground.
The bleeder orifice shall be vertically upward and equipped with blow-down
pipes at the bottom.
2 The design pressure of pipeline system shall not be less than 2.5MPa.
1 Distance between tanks shall not be less than 2m; tanks shall be separated with
impervious concrete.
2 As for the underground LPG tank directly covered with soil, the covering soil depth
at the tank top shall not be less than 0.5m; the neutral fine sand shall be backfilled
around the tank and the sand thickness shall not be less than 0.5m.
3 LPG tank shall adopt anti-floating measures.
7.1.8 Where the underground tank pool is adopted for the buried LPG tank, the
following requirements shall be met:
1 The clear distance between the inner wall and tank wall of tank pool shall not be
less than 1m.
2 Seepage-proof measures shall be taken at the bottom and side wall of tank pool
which shall be filled with neutral fine sand or sandbag.
3 The covering thickness (including cover plate) at the tank top shall not be less than
0.5m, and the filling thickness around shall not be less than 0.9m.
4 The drainage ditch shall be arranged at one side of the pool bottom, and the pool
bottom gradient should be 3‰.Electrical equipment in the pumping well shall meet the
explosion-proof requirements.
7.1.9 Aspect of the tank shall be toward the pollution discharge end, and the
gradient shall be 3‰~5‰.
7.1.10 The anti-corrosion design of the external surface of buried LPG tank shall
meet the relevant requirements of the current professional standard "Technical
Specification for the Coating Anticorrosion of Equipment and Piping in Petrochemical
Industry" SH 3022 and the top grade of anti-corrosion insulation protective layer shall
be adopted, and cathodic protection measures shall be taken simultaneously. The
insulating flange shall be installed behind the valves at the root of LPG tank.
7.2 Pump and Compressor
7.2.1 The unloading pump should be selected for unloading LPG; where the total
volume of LPG tank is greater than 30m3, LPG compressor may be selected for
unloading; where the total volume of LPG tank is less than or equal to 45m3, the
unloading pump on LPG tank car may be adopted for unloading, which should be
powered from the station.
7.3 LPG Dispenser
7.3.1 The gas dispenser shall not be arranged in the room.
7.3.2 Quantity of the gas dispenser shall be determined according to the quantity of
gas filling automobiles. The gas filling time of each automobile may be calculated
according to 3~5min.
7.3.3 The gas dispenser shall be possessed of filling and metering functions, and its
technical requirements shall meet the following requirements:
1 The design pressure of gas filling system shall not be less than 2.5MPa.
2 The flow of dispenser nozzle shall not be greater than 60 L/min.
3 The gas filling hose shall be arranged with safe-break valve whose separation
tension should be 400N~600N.
4 Th......
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.