GB 20951-2020_English: PDF (GB20951-2020)
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| GB 20951-2020 | English | 219 |
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Emission standard of air pollutant for gasoline transport
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GB 20951-2020
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| GB 20951-2007 | English | 479 |
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Emission standard of air pollutant for gasoline transport
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GB 20951-2007
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| Standard ID | GB 20951-2020 (GB20951-2020) | | Description (Translated English) | Emission standard of air pollutant for gasoline transport | | Sector / Industry | National Standard | | Word Count Estimation | 10,130 | | Date of Issue | 2020-12-28 | | Date of Implementation | 2021-04-01 | | Older Standard (superseded by this standard) | GB 20951-2007 | | Drafting Organization | Beijing Institute of Protection Science | | Administrative Organization | Ministry of Ecology and Environment | | Regulation (derived from) | Ministry of Ecology and Environment Announcement No. 74 (2020) | | Standard ID | GB 20951-2007 (GB20951-2007) | | Description (Translated English) | Emission standard of air pollutant for gasoline transport | | Sector / Industry | National Standard | | Classification of Chinese Standard | Z60 | | Classification of International Standard | 13.040.50 | | Word Count Estimation | 12,194 | | Date of Issue | 2007-06-22 | | Date of Implementation | 2007-08-01 | | Quoted Standard | GB 18564.1; QC/T 653; JT/T 198; TB/T 2234 | | Drafting Organization | Beijing Academy of Environmental Sciences | | Administrative Organization | State Environmental Protection Administration of Science, Technology | | Regulation (derived from) | GB Notice 2007 No. 6 (Total No. 106)(GB Commission) | | Summary | This Chinese standard specifies the transport process in the gasoline tanker and gas emission limits, control technology requirements and test methods. This standard applies to the transport process in the gasoline tanker and gas emissions management. |
GB 20951-2020
(Emission standard of air pollutants for oil transportation)
Emission standard of air pollutants for oil transportation
Emission standard of air pollutant for petroleum transport
ICS 13.040.40
Z 60
National Standards of People's Republic of China
Replace GB 20951-2007
2020-12-28 release
2021-04-01 implementation
Ministry of Ecology and Environment
State Administration for Market Regulation
release
Table of contents
Foreword...II
1 Scope of application...1
2 Normative references...1
3 Terms and definitions...1
4 Control requirements...2
5 Emission limits...3
6 Pollutant monitoring requirements...3
7 Implementation of the standard...4
Appendix A (Normative Appendix) Test Method for Airtightness of Tank Truck Vapor Recovery System...5
Appendix B (Informative Appendix) Configuration Table of Tank Truck Recovery System...7
Preface
To implement the Environmental Protection Law of the People’s Republic of China and the Air Pollution Prevention and Control Law of the People’s Republic of China to prevent and control environmental pollution,
To improve environmental quality, develop this standard.
This standard specifies the requirements for the control, monitoring and supervision of oil and gas emissions during the transportation of oil products.
This standard was first published in.2007, and this is the first revision. The main contents of this revision are.
- Adjusted the scope of application to crude oil, gasoline (including alcoholic gasoline, aviation gasoline), aviation kerosene, naphtha and other oil products
Lose process
- Renamed the "Emission Standard of Air Pollutants for Gasoline Transportation" to "Emission Standard for Air Pollutants for Oil Transportation";
- Added oil tanker control requirements.
The implementation of railway tank cars, existing tank cars and newly put into service tankers (150 gross tonnage and above) will be implemented on April 1, 2021.new
The production, import, sale and registration of tank cars will be implemented on July 1, 2021.Existing oil tankers of 8,000 gross tonnage and above
It will be implemented after January 1, 2024.
This standard is the basic requirement for the control of atmospheric pollutants during the transportation of oil products. The provincial people's government has not made provisions on this standard
For projects, local pollutant discharge standards can be formulated; for projects that have been stipulated in this standard, local pollution standards that are stricter than this standard can be formulated
Emissions standards.
Appendix A of this standard is a normative appendix.
Appendix B of this standard is an informative appendix.
This standard was formulated by the Department of Atmospheric Environment and the Department of Regulations and Standards of the Ministry of Ecology and Environment.
This standard was prepared by. Beijing Academy of Environmental Sciences, Chinese Academy of Environmental Sciences, Hanyang Special Vehicle Research Institute.
This standard was approved by the Ministry of Ecology and Environment on December 21, 2020.
This standard will be implemented on April 1, 2021.
From the date of publication of this standard, information can be disclosed in accordance with this standard.
This standard is interpreted by the Ministry of Ecology and Environment.
Emission standard of air pollutants for oil transportation
1 Scope of application
This standard specifies the requirements for the control, monitoring and supervision of oil and gas emissions during the transportation of oil products.
This standard applies to the management of oil and gas emissions from existing oil transportation vehicles, as well as newly produced, imported, sold and newly put into use oil
The registration of transportation vehicles and the management of oil and gas emissions after use.
2 Normative references
This standard quotes the following documents or their clauses. For dated reference documents, only the dated version applies to this standard
quasi. For undated references, the latest version (including all amendments) applies to this standard.
GB/T 5600 General Technical Requirements for Railway Freight Cars
HJ 733 Leakage and open liquid level emission of volatile organic compounds detection technology guide
HJ 819 General Rules of Technical Guidelines for Self-monitoring of Pollutant Discharge Units
"Environmental Monitoring Management Measures" (State Environmental Protection Administration Order No. 39)
"Measures for the Disclosure of Environmental Information of Enterprises and Institutions" (Order No. 31 of the Ministry of Environmental Protection)
3 Terms and definitions
The following terms and definitions apply to this standard.
3.1
Petroleum
A collective term for crude oil, gasoline (including alcoholic gasoline and aviation gasoline), aviation kerosene, and naphtha.
Note. It also includes circulating oil, component oil, condensate oil, light oil, etc., stored in oil storage depots with similar volatile characteristics to the aforementioned oil products.
3.2
Ethanol or methanol gasoline
Gasoline containing 10% or less ethanol fuel (E10) or gasoline containing 30% or less methanol fuel (M30, M15, etc.).
3.3
Road and rail tankers
Automobile tank cars and railway tank cars specially used to transport oil products.
3.4
Marine tanker
Ships dedicated to the transportation of oil products.
3.5
Oil tank compartment
The tank or ship has a liquid-tight separation space.
3.6
Volatile organic compounds (VOCs)
Organic compounds that participate in atmospheric photochemical reactions, or organic compounds determined in accordance with relevant regulations.
3.7
Oil and gas vapor
For VOCs generated during the transportation of oil products, this standard adopts non-methane total hydrocarbons as oil and gas emission control items.
3.8
Vapor sealing point of transportation facility
Automobile tanker vapor recovery coupling valve, tanker manhole cover, tanker vapor recovery pipeline flange blind plate.
3.9
Leakage detection value
Using the prescribed monitoring method, the detection instrument detects the net value of the VOCs concentration of the sealed point after deducting the environmental background value, and the carbon
Mole fraction representation.
3.10
Bottom loading
The oil delivery method is the airtight connection between the filling crane tube and the bottom interface of the tanker.
3.11
Vapor recovery system for tank truck
A device used to seal oil and gas input/output tanks and recover them when loading and unloading oil; the oil and gas recovery system includes an oil and gas recovery coupling
Valves, oil and gas recovery valves, vent valves, pneumatic interlock valves, sealing caps, control pipes and connecting pipes, etc.
3.12
Vapor adaptor valve
A quick closing valve for connecting the tank body to the outside and transmitting oil and gas.
4 Control requirements
4.1 Emission Control of Fuel Tank Truck
4.1.1 The tanker truck shall be equipped with a bottom loading and unloading system and a vapor recovery system.
4.1.2 The nominal diameter of the oil loading and unloading system at the bottom of the tank car should be 100 mm. The oil loading and unloading system at the bottom includes an oil unloading valve, an emergency shut-off valve,
Breathing valve, anti-overflow system and connecting pipeline, etc.
4.1.3 The nominal diameter of the vapor recovery system of the tank car should be 100 mm, and the vapor recovery system can send oil from the storage depot to the tank car.
The oil and gas generated at the time of time can be sealed into the oil and gas processing device, and the oil and gas generated during unloading can be sealed into the oil tank of the automobile tanker.
During the transportation process, the oil and gas shall not leak, and the oil and gas in the tanks of automobile tanks shall not be discharged at will. Take effective measures to reduce
Oil and gas leakage caused by maintenance and management.
4.1.4 The vapor recovery coupling valve and bottom loading and unloading oil-sealed quick couplings of automobile tankers should be placed in the pipeline box. Multi-warehouse car tank
The vehicle should connect the oil and gas recovery pipelines of each warehouse in parallel on the tank top and enter the pipeline box.
4.1.5 Railway tank cars should comply with the technical regulations of GB/T 5600, and corresponding measures should be taken to reduce oil and gas emissions during transportation.
4.1.6 When using infrared camera to detect the oil and gas sealing points of transportation tools, there should be no oil and gas leakage.
4.2 Oil tanker emission control
4.2.1 Oil tankers are to be equipped with closed oil and gas collection systems and inert gas systems.
4.2.2 The oil and gas collection system of an oil tanker shall seal the oil and gas generated when sending oil to the oil tanker and send it to the oil and gas processing device.
4.2.3 For oil tankers, independent venting pipelines should be installed in each oil tank, and a pressure/vacuum valve should be installed at the outlet of each venting pipe.
4.2.4 During the transportation of oil tankers, it should be ensured that oil and gas do not leak.
4.2.5 Oil tankers should adopt a closed liquid level monitoring system to measure the height of the oil tank level, oil and gas pressure and temperature.
4.2.6 When using infrared camera to detect the oil and gas sealing points of transportation tools, there should be no oil and gas leakage.
5 Emission limits
5.1 Airtightness limit
The airtightness of the vapor recovery system of the tank car is subject to the limits specified in Table 1.
Table 1 The airtightness limit of the gas recovery system of automobile tanker
Single tank or multiple tanks single
Volume of oil tank V (L)
Pressure fluctuation limit of oil and gas recovery system (kPa)
Vapor recovery valve pressure change
Dynamic limit (kPa)
V≥9500 ≤0.25
≤1.30
9500>V≥5500 ≤0.38
5500>V≥3800 ≤0.50
V< 3800 ≤0.65
5.2 Leakage emission limit
The leakage detection value of the oil and gas sealing points of the transportation means should not exceed 500 μmol/mol.
6 Pollutant monitoring requirements
6.1 The enterprises belonging to transportation vehicles shall comply with the relevant laws, the "Environmental Information Disclosure Measures for Enterprises and Institutions" and "Environmental Monitoring Management Measures"
And HJ 819 and other regulations, establish a self-monitoring system for enterprises in accordance with the law, formulate a monitoring plan, and at least check the oil and gas recovery system
Carry out 2 self-monitoring of airtightness and oil and gas sealing points of transportation vehicles. The interval between the 2 monitorings is greater than 3 months. The original monitoring records are kept.
Records, and announces the monitoring results in accordance with the law. See Appendix A for the leak detection method.
6.2 The tank car manufacturer should entrust an institution with inspection qualifications to test the airtightness of the tank car's vapor recovery system.
See Appendix A for the method of sex testing, and make the test results public to the public. See Appendix B for the disclosure content.
6.3 Use a hydrogen flame ionization detector (using methane or propane as calibration gas) to detect and monitor the oil and gas sealing points of transportation vehicles
Sampling and determination methods shall be implemented in accordance with HJ 733.
7 Implementation of standards
7.1 The implementation of railway tank cars, existing tank cars and newly put into service tankers (150 gross tonnage and above) will be implemented on April 1, 2021.
Newly produced, imported, sold and registered tank cars will be implemented on July 1, 2021.Existing oil tankers of 8,000 gross tonnage and above
It will be implemented after January 1, 2024.
7.2 The enterprise is the main body responsible for the implementation of the emission standards and should take necessary measures to meet the pollutant emission control requirements specified in this standard.
7.3 For the airtightness test of the oil and gas recovery system of automobile tankers, the airtightness test value measured on-site according to the requirements of the test specification exceeds this
The limit specified by the standard is judged to exceed the limit.
7.4 For the leakage detection of the oil and gas sealing points of transportation vehicles, the leakage detection value measured on site according to the requirements of the detection specifications exceeds the specifications of this standard.
The set limit is judged to exceed the limit.
7.5 If an enterprise fails to comply with the tactical control requirements stipulated in this standard and constitutes an illegal act, it shall be punished in accordance with relevant regulations such as laws and regulations.
Rationale.
Appendix A
(Normative appendix)
Airtightness detection method of automobile tank car vapor recovery system
A.1 Scope of application
This appendix applies to the airtightness test of the vapor recovery system of automobile tankers.
A.2 Detection principle and summary
The pressure or vacuum method is used to detect the degree of pressure maintained by the oil and gas recovery system. Inflate or vacuum the tank during testing
After reaching a certain pressure, isolate it from the pressure source, record the pressure change value after 5 minutes and compare with the tightness limit to see if it is up to standard.
A.3 Test conditions
Tank trucks should be parked in a location not exposed to direct sunlight for testing. There should be no residual oil in the tank.
A.4 Testing equipment
A.4.1 Nitrogen pressurization system. The tank can be pressurized to 7 kPa.
A.4.2 Low-pressure regulator. It is used to control the pressure of high-pressure air source, and the graduation value is ≤20 kPa.
A.4.3 Pressure gauge. Measuring range (-6～6) kPa; maximum allowable error≤±2.5%FS; graduation value≤30 Pa.
A.4.4 Oil and gas pipeline inspection joints. The detection joint is equipped with a shut-off valve that can be connected to the pressure and vacuum hose. The detection joint should also be connected to the pressure
Force meter connection.
A.4.5 Vacuum pump. The tank can be evacuated to -2.5 kPa.
A.4.6 Pressure and vacuum hoses. The inner diameter is (6-10) mm, which can withstand the detection pressure.
A.4.7 Pressure relief valve. Connected in series in the pipeline, it can automatically open when the pressure reaches 7 kPa and -2.5 kPa.
A.5 Testing procedures
A.5.1 Inspect the relevant components of the vapor recovery system of the tank car.
A.5.2 Airtightness test of oil and gas recovery system (positive pressure)
Fill the first oil tank of a single-storey tanker or multi-storey tanker to 4.5 kPa, and the pressure change value recorded after 5 minutes
It should be less than or equal to the limit specified in Table 1, and the specific testing should be carried out in accordance with the following requirements.
a) Open and close the tank top cover.
b) Connect the electrostatic grounding connector to the tank.
c) Connect the detection connector to the coupling valve of the tanker's vapor recovery.
d) Connect the shut-off valve to the pressure relief valve, pressurizing and vacuum hoses, and connect the pressure source to the hoses.
e) Slowly increase the pressure, and pressurize the first oil tank of a single-storage tanker truck or a multi-storage tanker truck to 4.5 kPa.
f) Close the shut-off valve and allow the pressure to stabilize. If the pressure is unstable, adjust the pressure to keep it at 4.5 kPa and start timing.
g) After 5 minutes, record the remaining pressure.
h) Calculate the pressure change value, that is, the initial pressure (4.5 kPa) minus the remaining pressure, and compare it with the limit specified in Table 1.
i) If the multiple fuel tanks of the tanker truck are not connected to each other, check each fuel tank according to the above procedure.
A.5.3 Airtightness test of oil and gas recovery system (negative pressurization)
Evacuate the first oil tank of a single-storage tanker truck or multi-warehouse tanker truck to -1.5 kPa, and the pressure change value recorded after 5 minutes should be
If it is less than or equal to the limit specified in Table 1, the specific test shall be carried out in accordance with the following requirements.
a) Connect the vacuum pump to the pressure and vacuum hose.
b) Slowly evacuate the first oil tank of a single-storage tanker or multi-storage tanker to -1.5 kPa.
c) Close the shut-off valve and let the pressure stabilize. If the pressure is unstable, adjust the pressure to keep it at -1.5 kPa and start timing.
d) After 5 minutes, record the remaining pressure.
e) Calculate the pressure change value, that is, the residual pressure minus the initial pressure (-1.5 kPa), and compare it with the limit specified in Table 1.
f) If multiple fuel tanks of the tanker truck are not connected to each other, check each fuel tank according to the above procedure.
A.5.4 Airtightness test of oil and gas recovery valve (positive pressure)
Fill the first oil tank of a single-storage tank car or multi-storage tanker to 4.5 kPa, and close the tanker's vapor recovery valve.
Open the pressure relief valve, and then close the pressure relief valve. The pressure change value recorded after 5 minutes should be less than or equal to the limit specified in Table 1.The specific test should be
Follow the requirements below.
a) Connect the pressure source to the pressure and vacuum hose.
b) Slowly increase the pressure, and pressurize the first oil tank of a single-storage tanker or multi-storage tanker to 4.5 kPa.
c) Close the shut-off valve and let the pressure stabilize. If the pressure is unstable, adjust the pressure to keep it at 4.5 kPa.
d) Close the oil and gas recovery valve of the first oil silo of a single or multi-warehouse tanker truck to isolate the oil and gas recovery pipeline from the oil silo.
e) Open the pressure relief valve and reduce the pressure in the oil and gas recovery pipeline to atmospheric pressure.
f) Close the pressure relief valve and start timing. After 5 minutes, record the remaining pressure in the gas recovery pipeline.
g) Calculate the pressure change value, that is, the residual pressure minus the initial pressure (0 kPa), and compare it with the limit specified in Table 1.
h) If the multiple fuel tanks of the tanker truck are not connected to each other, check each fuel tank according to the above procedure.
Appendix B
(Informative appendix)
Configuration Table of Tank Truck Recovery System
See Table B.1 for the configuration table of the tanker recovery system.
Table B.1 Configuration Table of Tank Truck Recovery System
Equipped with vapor recovery coupling valve, vapor recovery valve, breather valve, manhole cover, oil discharge valve, emergency shut-off valve, anti-overflow probe, anti-overflow socket
model
Manufacturer
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