SY 5670-1993 Petroleum and liquid petroleum products railway tank car transfer measurement regulations SY5670-1993 standard download decompression password: www.bzxz.net

Petroleum and liquid petroleum products
Railway tank car delivery measurement procedure
SYL02-B3
1. General provisions
2. Measuring instrument test
3. Measuring operation station
4. Oil quantity calculation
5. Matters needing attention
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Standard of the Ministry of Petroleum Industry of the People's Republic of ChinaPetroleum and liquid petroleum products
Railway tank car delivery measurement procedureSYLO2-3
This procedure applies to the delivery measurement of petroleum products (hereinafter referred to as oil products) shipped by railway tank cars. When implementing this procedure, the relevant provisions of the "Measurement Method for the Handover of Oil and Liquid Products" issued by the Ministry of Distribution Industry must be implemented. 1. General Principles
1.1 Measurement Accuracy
The maximum error of the oil product handover measurement selected in accordance with this procedure is ±0.7. 1.2 Determination of Tank Car Volume
1.2.1 The verification of the volume of railway tank cars shall be carried out in accordance with JJG:40-76 "Trial Verification Regulations for the Volume of Railway Tank Cars".
1.2.2 The verification cycle of the volume of railway tank cars shall be carried out in accordance with relevant regulations. 2. Measuring instruments and reagents
2.1 Dipstick
2.1.1 The dipstick should be a steel tape measure with a length of 5 meters, a minimum scale of 1 mm, and a total length error of less than ±2 mm. It should be accompanied by a factory certificate and a calibration table. A dipstick can also be used to measure crude oil and heavy oil products. 2.1.2 The dipstick hammer should be made of copper. The 25g hammer approved by the Ministry of Petroleum Industry of the People's Republic of China on March 12, 1983 and implemented on July 1, 1983, is used for measuring light oil products. The 500g hammer is used for measuring raw oil and heavy oil products. 2.1.3 The oil dipstick should be calibrated once every six months, and its technical conditions should comply with the provisions of JJG4-80 "Standards for the Calibration of Steel Tape Measures". 2.1.4 The dipstick is prohibited from use if it falls into any of the following conditions: a. The tape is torn, bent or connected; h. The tape engraving becomes unclear or the numbers fall off; c. The tip of the hammer is damaged; d. The scale error exceeds the allowable limit; e. There is no calibration table.
2.2 Temperature spectrum
2.2.1 The thermometer used to measure the humidity of oil products is generally a closed full immersion mercury overflow meter with a minimum graduation value of 0.2°℃, and is accompanied by a factory certificate and a verification table.
2.2.2 The mercury thermometer should be calibrated once every six months. Its technical conditions should comply with the provisions of GB514-B5 "Technical Conditions for Liquid Thermometers for Oil Product Testing":
2.2.3 Mercury thermometers that fall into any of the following conditions are prohibited from use! a. The mercury column in the capillary tube is broken E. The temperature bulb is cracked,
, the scale is unclear, and the paint falls off
1. The scale error exceeds the allowable range:
e. There is no calibration table.
2.2.4 The use of other types of thermometers must meet the following conditions a. Pass the national formal appraisal and be listed as a finalized product b. It shall have the corresponding verification procedures or technical conditions, and be able to carry out periodic verification. The measurement accuracy shall be able to reach the same level of accuracy as the mercury thermometer with the minimum graduation value of 0.2°C.
6. The thermometer (such as semiconductor thermometer, etc.) used shall be explosion-proof product and have explosion-proof grade mark and explosion-proof certificate. The wiring between the sensor and the display instrument shall meet the requirements of explosion-proof and shielding. 2.3 Densitometer
2.3.1 The density meter used to measure the density of oil products shall be the SY-1 oil density meter:
2.3.2 The measuring pool of the oil density meter shall comply with the provisions of GB1884-80 "Determination of Density of Solid and Liquid Petroleum Products (Densitometer Method)". 2.3.3 The oil density meter shall be calibrated every six months. Its technical conditions shall comply with the provisions of "SY3301-74 Technical Specifications for Rock Filter Densitometers" 2.4 Temperature measuring box
2.4.1 The temperature measuring box shall be made of copper or aluminum alloy. 2.4.2 The capacity of the temperature measuring box shall not be less than 200 ml. 2.4.3 The pull rope of the temperature measuring box shall be made of materials that meet the anti-static requirements.
2.5 Sampler
2.5.1 The sampler shall be made of copper or aluminum alloy. 2.5.2 The weight of the sampler shall be 1.5~2 times the weight of the discharged liquid. 2.5.3 The capacity of the sampler shall comply with the provisions of "Pool and Liquid Petroleum Product Selection Method".
2.5.4 The requirements for the pull rope of the sampler are the same as those for the pull rope of the temperature measuring box.
2.6 Test oil paste
The test oil paste shall meet the following requirements:
The test oil paste applied on the tape shall be immersed in 120* solvent gasoline at 15~20°C, and the time for its color to change shall not exceed 13 seconds, and the change in the indication value between staying for 10 seconds and staying for 20 seconds shall not exceed 0.5 mm1657
3.1 Operation sequence
3. Counter operation method
The ruler, temperature measurement and sampling shall be carried out in sequence. 3.2 Measure ruler:
3.2.1 Terminology
a. Measure ruler point: from the center line of the cap mouth on the car and close to the lead seal b. Measure ruler total height: the vertical distance from the measure ruler point to the lowest point of the arc surface of the tank bottom. C. Check the actual scale: measure the vertical distance from the liquid level in the tank to the lowest point of the tank bottom.
d. Check the empty scale, adjust the vertical distance from the measuring point to the liquid level in the tank, e. Oil mark: the boundary mark left by the measured oil on the dipstick, 3.2.2 Liquid level stabilization time
Light oil and lubricating oil shall not be less than 10 minutes; crude oil and heavy oil shall not be less than 15 minutes. 3.2.3 Gun scale position
When catching the scale, the scale should be separated from the measuring point and the oil accumulation should be separated from the scale. 3.2.4 Check the actual scale
3.2.4.1 For measuring light oil and lubricating oil, the actual scale should be checked. 3.2.4.2 When checking the scale, you should pay attention to: the scale is stable, the bottom is light, read the decimals first, then the large numbers, and keep records. 3.2.4.3 Repeat the operation in 3.2.4.2 to pick up the ruler for the second time. When the sum of the two ruler readings does not exceed 1 mm, the first ruler reading shall prevail. If it exceeds 1 mm, the ruler should be re-checked.
3.2.4.4 When measuring the liquid level of volatile light oil products, if the mark is not clear, you can slowly check the ruler with oil paste.
3.2.5 Check the empty piece
3.2,5.1. For measuring source oil and heavy oil products such as heavy oil and fuel oil, the empty ruler should be checked.
3.2.5.2 When only the tape is immersed in the oil, stop lowering the ruler, align the scale of the tape measure with the ruler checking point, read the lower ruler height steadily, lift the ruler and read the height change of the part immersed in the oil, and make a record.
3.2.5.3 Repeat the operation of 3.2.5.2 for the second gauge. If the difference between the two gauge readings does not exceed 1 mm, the first gauge reading shall prevail. If it exceeds 1 mm, re-gauge.
3.2.5.4 When the gauge is empty, the oil level is equal to the total gauge height minus the empty gauge height plus the immersion height.
3.2.6 Provisions for water gauge
For general leaks transported by sealed railway tank cars, the bottom water in the tank is not measured. If the bottom water in the tank is required to be measured for special oil products, the measuring instruments used and the operation method of the bottom water gauge shall comply with the relevant provisions of SYLOL--83 "Measurement Procedures for Transfer of Vertical Metal Tanks for Petroleum and Liquid Petroleum Products" 3.3 Temperature measurement
3.3.1 Temperature measurement in tank cars
For measuring the temperature of liquid petroleum products, it is advisable to use the method of measuring the temperature in the tank car.
3.3.1.1 Before measuring the temperature, select a thermometer with an appropriate range, place it in the middle of the source box, and lower the temperature box from the gauge point to 2/3 below the oil surface in the tanker. 3.3.1.2 The number of temperature measurements should be the same as the number of sampling times in the tanker specified in 3.4.1. Then take the arithmetic mean of the measured concentrations as the average temperature of the oil.
3.3.1.3 The temperature measurement residence time is as follows:
For light oil products, not less than 5 minutes;
For lubricating oil, not less than 7 minutes;
For crude oil, heavy oil, combustion oil, high-temperature lubricating oil, etc., not less than 1.0 minute. 3.3.1.4 When the temperature measuring box has been in the tank for the specified time, quickly take out the reading (do not pour out the oil in the temperature measuring box at this time); when reading, the line of sight should be level with the temperature indication, read the decimal first, then the large number, and keep a record. 3.3.2 Pipeline temperature measurement
For measuring crude oil temperature, it is advisable to adopt the method of measuring in the oil pipeline. 3.3.2.1 The temperature measurement location should be on the main pipeline at the pump outlet and within 200 meters from the loading bridge.
3.3.2.2 During the total loading time, the temperature of the oil in the tank should be measured once 10 minutes after the oil passes the temperature measurement point at the start of loading, once during the interval, and once before the end of loading. The arithmetic average of the three measured temperatures is taken as the average temperature of the oil.1 Tank truck sampling
For the sample of liquid petroleum filtration products, it is advisable to take the sample in the tank truck. The sampling method shall be in accordance with SY2001-77 Petroleum Product Mixing Method: 3.4.1.1 Before sampling, the sampler shall be flushed with the product once. 3.4.1.2 Lower the sampler to the sampling position in the tank, open the sampler for inspection, and after the sample is filled with the sample, take out the sampler and mix the oil into the clean bottle with a scale.
3.4.2 Pipeline sampling
For the sampling of crude oil, the sampling method shall be specified in the transportation pipeline. 3.4.2.1 The sampling position shall be close to the loading main pipeline at the pump outlet. 3.4.2.2 The installation requirements of the sampling tube are as follows
a. It shall be installed horizontally on the vertical pipeline or installed horizontally at 90° in the fluid flow area of ​​the water half pipeline (Reynolds number Re>2000)! b. The 45° slope of the sampling tube inlet should face the direction of fluid flow, and the midpoint of the slope of the inlet should be located at 1/3 of the tube diameter. 3050
C. The exposed part of the sampling tube should be as short as possible. 3.4.2.3 In the total loading time, the sampling should be conducted once each at 16 minutes after the concentrated product in the tank flows through the sampling point at the beginning of oil loading, in the middle time, and 10 minutes before the end of oil loading. The samples collected should be mixed with equal volumes as representative samples of the oil products. 3.4.2.4 Before sampling, some oil products to be sampled should be released to flush the sampler clean, and then the samples should be collected in the sample container or collector. 3.4.2.5 When sampling high freezing point samples, attention should be paid to the insulation of the sampling tube section to prevent the oil products from solidifying. When taking volatile samples, it is necessary to prevent light loss. 3.5 Density determination
The method for determining the density of oil products shall be carried out in accordance with GB1884-80% Petroleum and liquid slurry product density determination method (density meter method)". For the samples taken, the density and temperature shall be measured. Each test mix shall be measured twice in succession. The density meter reading shall be estimated to 0.01 g/cm3 and the temperature shall be read to 0.2°C. 3.6 Determination of water content in crude oil
The method for determining the water content of crude oil shall be carried out in accordance with GB260--77 "Water content determination method for slurry products". The samples taken shall be subjected to parallel determination of the water content. The arithmetic mean of the two parallel determinations shall be taken as the water content of the tested crude oil. The data shall be expressed in weight percentage.
4. Calculation of oil quantity
4.1 Density conversion
Refer to Table 1 of GB:885-8℃ standard for conversion of apparent density of petroleum. The density meter shall be used at tC. The measured apparent density (er) of the oil product is converted into the standard cone density (p20) 4.2 Calculation of the standard push volume
4.2.1 Calculate the table volume (V).
Limited to the oil height and key car number measured by the inspection, check the railway car capacity table 06!
to obtain the corresponding volume (V table).
4.2.2 Calculate the volume (V) of the oil product at the actual measured temperature C. 4.2.2.1 When the difference between the oil product temperature and the standard temperature cabinet does not exceed ±10°C, the oil product volume is:
4.2.2.2 When the difference between the oil product temperature and the standard temperature exceeds ±10C, the oil product volume (V.) is calculated according to the following formula: V=)z[t+0.00036 (t-20))
Where: 0.0003—Volume expansion coefficient of steel tank (1/C),—Temperature change of steel plate of tank car, its value can be used as oil temperature. 4.2.3 Calculate the standard volume (V20) of the product at 20°C. V=K·Y,
Where: K—Oil volume coefficient, its value can be obtained by looking up GB1885-80 Table IⅡIA & Petroleum Volume Coefficient Table.
4.2.4 Standard volume (V) can also be calculated by the following formula V20=V, [1-f(t-20))
Formula!: /—Oil volume temperature coefficient (1/°℃), its value is obtained from GB1885-B0 Table IB "Oil Volume Temperature Coefficient Table". 4.2.5 In order to reduce the difference caused by the different values ​​of the two calculation formulas using K value and / value, when calculating, the K value and / value used should be calculated to the fifth decimal place. For these two calculation results, if there is a dispute, the result calculated using the coefficient value shall prevail.
4.3 Calculation of mass
When the oil is measured by weight in air, the influence of air buoyancy should be considered, and the mass in vacuum (M) should be converted to the weight in air (m). 4.3.1 The calculation formula corrected by the air buoyancy correction value is m=(p2a-0.0011) ·V2o
Where: 0.0011——Air buoyancy correction value of oil density (g/cm) 4.3.2 The calculation formula for correction with air buoyancy correction coefficient is: mpa·VzoF
Where: F is the air buoyancy correction coefficient. Its value is obtained by looking up GB1885-80 Table IIIB (Conversion coefficient table of oil vacuum mass to air weight) according to the standard density of oil. 4.3.3 In case of any dispute between the calculation results of formula (1) in 4.3.1 and formula (2) in 4+3,2, the calculation result of formula (2) in 4.3.2 shall prevail. 4.4 Calculation of pure crude oil volume
For the transfer measurement of crude oil, the water content in the source oil should be deducted when calculating the oil volume. The calculation formula for the pure oil volume of crude oil is as follows: m=m·(1-W)
W—the weight of pure crude oil;
m—the weight of mixed crude oil
W—the weight percentage of water in the crude oil sample. 5. Precautions
5.1 Tank trucks carrying light oil products can only be measured 10 minutes after loading.
5-2 Before getting on the truck, the measuring personnel should touch any part of their body to the truck body, and measure after eliminating static electricity. 5.3 When operating on the tank truck, the metering personnel should stand in the windward direction. 5.4 Do not wear spiked shoes or clothing made of artificial fibers when operating on the truck. 5.5 The trestle rails should have grounding wires
Additional instructions:
This regulation is proposed and managed by the Transportation and Marketing Department of the Ministry of Petroleum Industry. 1063
This regulation is compiled by the compilation group of "Measurement Regulation for Transfer of Petroleum and Liquid Petroleum Products" of the Ministry of Petroleum Industry.
This standard is still valid after the review in 1999, and the review result has been approved by the State Administration of Petroleum and Chemical Industry.2 Calculate the volume (V) of the oil product at the measured temperature C. 4.2.2.1 When the difference between the oil product temperature and the standard temperature cabinet does not exceed ±10°C, the volume of the oil product is:
4.2.2.2 When the difference between the oil product temperature and the standard temperature exceeds ±10°C, the volume of the oil product (V.) is calculated as follows: V=)z[t+0.00036 (t-20))
Where: 0.0003—Volume expansion coefficient of steel tank (1/C),—Temperature change of steel plate of tank car, its value can be used to calculate the oil temperature. 4.2.3 Calculate the standard volume (V20) of the product at 20°C. V=K·Y,
Where: K—Oil volume coefficient, its value can be obtained from Table IⅡIA & Stone Volume Coefficient Table of GB1885-80.
4.2.4 Standard volume (V) can also be calculated using the following formula V20=V, [1-f(t-20))
Formula!: /—Oil volume temperature coefficient (1/°℃), the value of which is obtained from GB1885-B0 Table IB "Oil Volume Temperature Coefficient Table". 4.2.5 In order to reduce the difference caused by the different values ​​of the two calculation formulas using K value and / value, when calculating, the K value and / value used should be calculated to the fifth decimal place. For these two calculation results, if there is a dispute, the result calculated using the coefficient value shall prevail.
4.3 Calculation of mass
When oil products are measured by weight in air, the influence of air buoyancy should be considered, and the mass in vacuum (M) should be converted to the weight in air (m). 4.3.1 The calculation formula for correction based on the air buoyancy correction value is m=(p2a-0.0011) ·V2o
Wherein: 0.0011——air buoyancy correction value of oil density (g/cm) 4.3.2 The calculation formula for correction based on the air buoyancy correction coefficient is: mpa·VzoF
Wherein: F is the air buoyancy correction coefficient. Its value is obtained by referring to Table IIIB of GB1885-80 (Conversion coefficient table of mass of petroleum in vacuum to weight in air) according to the standard density of oil products. 4.3.3 In case of any dispute between the calculation results of formula (1) in 4.3.1 and formula (2) in 4+3,2, the result calculated by formula (2) in 4.3.2 shall prevail. 4.4 Calculation of pure oil content of crude oil
For the transfer measurement of crude oil, the water content in the source oil should be deducted when calculating the oil volume. The calculation formula of pure oil content of crude oil is as follows: m=m·(1-W)
Where: n—pure oil weight of crude oil;
m—mixed crude oil weight
W—water weight percentage of crude oil sample. 5. Note Matters
5.1 Tank trucks carrying light oil products can only be measured 10 minutes after loading.
5-2 Before getting on the truck, the measuring personnel should touch any part of their body to the truck body, and measure after eliminating static electricity. 5.3 When operating on the tank truck, the measuring personnel should stand in the windward direction. 5.4 Do not wear spiked shoes or clothing made of artificial fibers when operating on the truck. 5.5 The trestle rails should have grounding wires
Additional instructions:
This regulation is proposed and managed by the Transportation and Marketing Department of the Ministry of Petroleum Industry. 1063
This regulation is compiled by the compilation group of the "Measurement Regulations for the Transfer of Petroleum and Liquid Petroleum Products" of the Ministry of Petroleum Industry.
This standard continues to be effective after the review in 1999, and the review results have been approved by the State Administration of Petroleum and Chemical Industry.2 Calculate the volume (V) of the oil product at the measured temperature C. 4.2.2.1 When the difference between the oil product temperature and the standard temperature cabinet does not exceed ±10°C, the volume of the oil product is:
4.2.2.2 When the difference between the oil product temperature and the standard temperature exceeds ±10°C, the volume of the oil product (V.) is calculated as follows: V=)z[t+0.00036 (t-20))
Where: 0.0003—Volume expansion coefficient of steel tank (1/C),—Temperature change of steel plate of tank car, its value can be used to calculate the oil temperature. 4.2.3 Calculate the standard volume (V20) of the product at 20°C. V=K·Y,
Where: K—Oil volume coefficient, its value can be obtained from Table IⅡIA & Stone Volume Coefficient Table of GB1885-80. www.bzxz.net
4.2.4 Standard volume (V) can also be calculated using the following formula V20=V, [1-f(t-20))
Formula!: /—Oil volume temperature coefficient (1/°℃), the value of which is obtained from GB1885-B0 Table IB "Oil Volume Temperature Coefficient Table". 4.2.5 In order to reduce the difference caused by the different values ​​of the two calculation formulas using K value and / value, when calculating, the K value and / value used should be calculated to the fifth decimal place. For these two calculation results, if there is a dispute, the result calculated using the coefficient value shall prevail.
4.3 Calculation of mass
When oil products are measured by weight in air, the influence of air buoyancy should be considered, and the mass in vacuum (M) should be converted to the weight in air (m). 4.3.1 The calculation formula for correction based on the air buoyancy correction value is m=(p2a-0.0011) ·V2o
Wherein: 0.0011——air buoyancy correction value of oil density (g/cm) 4.3.2 The calculation formula for correction based on the air buoyancy correction coefficient is: mpa·VzoF
Wherein: F is the air buoyancy correction coefficient. Its value is obtained by referring to Table IIIB of GB1885-80 (Conversion coefficient table of mass of petroleum in vacuum to weight in air) according to the standard density of oil products. 4.3.3 In case of any dispute between the calculation results of formula (1) in 4.3.1 and formula (2) in 4+3,2, the result calculated by formula (2) in 4.3.2 shall prevail. 4.4 Calculation of pure oil content of crude oil
For the transfer measurement of crude oil, the water content in the source oil should be deducted when calculating the oil volume. The calculation formula of pure oil content of crude oil is as follows: m=m·(1-W)
Where: n—pure oil weight of crude oil;
m—mixed crude oil weight
W—water weight percentage of crude oil sample. 5. Note Matters
5.1 Tank trucks carrying light oil products can only be measured 10 minutes after loading.
5-2 Before getting on the truck, the measuring personnel should touch any part of their body to the truck body, and measure after eliminating static electricity. 5.3 When operating on the tank truck, the measuring personnel should stand in the windward direction. 5.4 Do not wear spiked shoes or clothing made of artificial fibers when operating on the truck. 5.5 The trestle rails should have grounding wires
Additional instructions:
This regulation is proposed and managed by the Transportation and Marketing Department of the Ministry of Petroleum Industry. 1063
This regulation is compiled by the compilation group of the "Measurement Regulations for the Transfer of Petroleum and Liquid Petroleum Products" of the Ministry of Petroleum Industry.
This standard continues to be effective after the review in 1999, and the review results have been approved by the State Administration of Petroleum and Chemical Industry.
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