Some standard content:
Standard SY5317-88 of the Ministry of Petroleum Industry of the People's Republic of China
Automatic sampling method for crude oil pipeline
Issued on April 9, 1988
Ministry of Petroleum Industry of the People's Republic of China
Implementation on October 1, 1988
Subject content and scope of application..
Cited standards
3 Terms··
4 Sampling principles,
Composition and installation of automatic sampling system
6 Operating methods
Safety precautions
Automatic sampler characteristic report sheet (supplement) Appendix A
This standard continues to be effective after the review in 199, and the review results have been approved by the State Administration of Petroleum and Chemical Industry.
Standard of the Ministry of Petroleum Industry of the People's Republic of China for Automatic Sampling of Crude Oil Pipelines
SY5317-88
This standard refers to the international standard ISQ3171 "Automatic Sampling of Liquid Petroleum Pipelines" (1985 edition). 1 Content and scope of application
This standard specifies the composition, installation and operation methods of the automatic sampling system for crude oil. This standard is applicable to the collection of representative samples of crude oil transported by pipelines. The crude oil samples collected according to this standard are applicable to the analysis of the following properties of crude oil: a. The composition and quality of crude oil, b. The water content in crude oil, c. The content of other impurities in crude oil.
2 Referenced Standards
GB4756 "Sampling Method for Petroleum and Liquid Petroleum Products (Manual Method)" 3 Terminology
3.1 Representativeness Sample: A representative sample. That is, the physical and physicochemical properties of the sample are basically the same as the average properties of the sampled liquid (the error should be within the accuracy of the analytical method used). 3.2 Sample: A portion of liquid collected from a pipeline for analysis of its properties. 3.3 Automatic sampler: A device that can automatically collect representative samples from the liquid flowing through the pipeline. 3.4 Rapid sampling route: A bypass connected to the main pipeline. Through this route, a portion of representative liquid quickly enters the automatic sampler. 3.5 Mixer: A device installed in a pipeline or container to obtain a representative sample. A device that provides homogeneous mixing in the oil pipeline. a. Self-powered mixer. A mixing device installed in the arm line without any moving parts, which is powered by the kinetic energy of the liquid flow.
b. Power mixer, a device that mixes liquids by providing energy from an external moving party. 3.6 Sampling head: A sampling element that extends into the oil pipeline. 3.7 Sampling controller: An instrument that controls the sampling operation in order to obtain a representative sample. 3,8 Flow proportional sample: During the transportation of crude oil or liquid petroleum products, a sample is collected from the pipeline at any moment when the flow rate through the sampler is proportional to the flow rate in the pipeline. 3.9 Time-proportional sample: a sample composed of multiple equal amounts collected from the pipeline at regular intervals during the transportation of crude oil or liquid petroleum products.
Sampling rate: the amount of liquid represented by one sample. 3.101
Sample receiver: a container connected to the automatic sampler for receiving samples during the sampling period. 3.12 Sampling frequency, the number of samples per unit time. Approved by the Ministry of Petroleum Industry of the People's Republic of China on April 9, 1988 and implemented on October 1, 1988
4 Sampling principles
SY 5317--88
4.1 The composition of the crude oil sample collected from the pipeline should be the same as the average composition of all crude oil passing through the pipeline section at the sampling point during the sampling period.
4.2 The representativeness of the sample should exist throughout the entire period of transportation of the batch of crude oil. 4.3 During the storage period, it should be ensured that the sample is not lost or contaminated. 4.4 When distributing samples, it should be ensured that the composition of each sample is the same as that of the original sample. Composition and installation of automatic sampling system
The composition and installation of automatic sampling system are shown in Figure 1. Sample extractor
and header
Sample outlet
(downward inclined sample tube)
a, online Automatic sampler
Sample heat extractor
Controller
Sampling ratio number
Sample receiver
(necessary heating and insulation)
Controller
Sampling ratio number
Sample receiver
(necessary heating and insulation)
Sample outflow
(downward tilting tube)
Sampling head
b, automatic sampler with fast sampling loop Figure 1, automatic sampling system
5.1 Liquid mixing device
5.1.1 In order to make the liquid fully mixed, a mixing device should be installed upstream of the sampling point. Applicable mixing devices are: 2
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a. b. Pipe fittings, including valves, reducers, manifolds and "down" type connections b. Reducers,
c. Mixers, including white force mixers and power mixers: d. Fast sampling loops.
5.1.2 Select the type of mixing device according to the minimum flow rate in the pipeline (see Table 1). Table 1 Minimum pipeline flow rate corresponding to the mixing device Minimum pipeline flow rate
Mixing device
, power mixing
Self-powered mixing
Self-powered Shanghai
Pipe fittings
Pipe fittings
Line form
Horizontal or vertical pipe
Vertical pipe
Horizontal pipe
Straight pipe
Horizontal pipe
Horizontal or vertical pipe
Unpredictable ||tt ||Fully mixed
Fully mixed
Unpredictable
Fully mixed
Unpredictable
Note, this table is applicable to pipelines with a diameter greater than or equal to 300m. For pipelines with a diameter less than 300m, this table is for reference only. Fully mixed
5.1.3 The distance between the mixing device and the sampling head should be selected according to the type of mixing device. The distance should be larger for mixing with strong mixing ability and smaller for mixing with weak mixing ability. 5.2 Sampler
5.2.1 Sampling head position selection
5.2.1.1 The sampling head should be installed on the vertical pipe section. However, when the flow rate reaches the minimum flow rate for full mixing in Table 1, the sampling head can also be installed on the horizontal pipe section.
5.2.1.2 When installed on a straight pipe section, the sampling head should be installed before the last outlet elbow, and the minimum distance from the elbow is half the pipe diameter (see Figure 2b).
5.2.1.3 When using a fast sampling loop, the sampling head should be installed on the downstream vertical pipe section, with a minimum distance of three times the upstream elbow and a minimum distance of half the downstream elbow (see Figure 2). 5.2.1.4 The sampling point position should be within the range specified in Figure 3 and as close to the center of the pipe as possible. 5.2.2 Installation of automatic sampler
5.2.2.1 When installing a good automatic sampler, the convenience of maintenance and flushing should be considered. 5.2.2.2 The sampling head should be equipped with a detachable mechanical device. A safety chain should be installed on the sampling head to prevent it from being flushed out by the pressure in the pipeline. 5.2.2.3 The groove angle of the sampling head should be 45°. During installation, the groove of the sampling head should face the incoming flow direction. 5.2.2.4 The installation depth of the sampling head should comply with the provisions of 5.2, 1.4. 5.2.2.5 The automatic sampler should be equipped with appropriate valves and short joints so that the equipment can be flushed with the sampled liquid or appropriate solvent. And ensure that the sampled liquid or solvent is completely discharged from the sampling system after flushing. 5.2.2.6 For the sampling of high-freezing point crude oil, heating or insulation measures should be taken for the sampling equipment, connecting pipelines and components. 5.2.2.7 When the sampling pipeline and system are out of use, they should be filled with cleaning oil. 5.3 Sampling controller 5.3.1 The sampling controller shall have the following functions: a. It can adjust the liquid flow rate in the sampling loop, 3. General vertical pipe line shape SY 531788 At least three times the pipe diameter Sampling head position ~ At least 1 / 2 alternate diameter At least 1 / = pipe diameter Sampling head position At least three times the pipe diameter Another vertical pipe loop shape. When there is a sampling loop, the optimal position of the sampling head is the downstream flow at least / pipe diameter Minimize the flow as much as possible Sampling head position b. The optimal position of the sampling head on the vertical pipeline Figure 2 Optimal sampling head position b. For time-proportional sampling, the sampling frequency and sampling volume can be adjusted; C. For flow-proportional sampling, the sampling volume can be adjusted; d. A switch device for the sampler is provided.
5.3.2 Installation of the sampling controller
As low as possible
At least 1/2 of the viewing path
5.3.2.1 The sampling controller can be installed in the control room or together with the sampler, but it must comply with the relevant fire prevention and explosion prevention technical regulations. The sampling controller should include an alarm to alarm when the sampling fails. The main failure modes are: a. The flow meter signal disappears b. The power of the sampler is interrupted; c. The sample receiver overflows; d. The flow rate in the main line is too low; e. The flow rate in the fast sampling line is too low. 5.3.3 Flow indicator device 5.3.3.1 Flow ratio sampling requires a flow signal to adjust the sampler. Within the working flow range, the accuracy of this signal should be better than ±10% of the actual flow.
5.3.3.2 The following types of flowmeters can provide flow signals for the sampler; a: Insertion turbine flowmeter
b, Orifice throttling device:
SY 5317-88
c. Volumetric flowmeter #
d. Other types of flowmeters.
5.4 Sample receivers and sample containers
5.4.1 Sample receivers can be divided into two categories
SY 5317--B8
a: Fixed sample receiver: a sample receiver permanently placed on site; b. Portable sample receiver, with a quick disconnect connection device, easy to disconnect or connect with the sampler and sample mixer. 5.4.2 The sample receiver should be installed with a liquid level meter or a device with equivalent functions, such as a weighing device. 5.4.3 The sample receiver and sample container should be installed with a short section. Except for the safety valve, all short sections should be installed with plugs. 5.4.4 For crude oil with high freezing point, the sample receiver and its short joint should be heated or insulated to avoid solidification of the sample and make it easy for the sample to flow out. 5.4.5 The sample receiver and sample container should be cleaned regularly and tested for leakage and pressure. 5.4.6 The sample container should be affixed or tied with an oil-resistant label, and the mark on the label should be permanent. The following items should be recorded on the label: a. Sampling location
b. Sampling start date and time:
c. Sampling end date and time,
d. Sample label number or sample container number? e. Name of the liquid taken
f. The amount of liquid represented by the sample,
9: Tank number (and type), ship name and pipeline parameters, etc.; h. Sampling month;
i. Name of the sampler.
6 Operation instructions
6. 1 Attention items
6.1.1 When the automatic sampling system fails or needs maintenance, sampling should be carried out in accordance with GB4756 "Method for Sampling Petroleum Liquids and Petroleum Products (Manual Method)".
6.1.2 The integrity of the sample should be maintained during the sample transfer process, and changes in the sample should be prevented during the sampling process, such as the volatilization of volatile components or oxidation of the sample.
6.1.3 Before sampling begins, the automatic sampler and all connecting pipelines should be flushed, and the flushing liquid should be discharged into a water bucket or a safe sewage system to prevent toxic substances from entering the atmosphere or an open sewage system. 6.1.4 The sample should be protected from environmental influences during the sampling process. In operations where open containers are allowed to be used, the container should be closed immediately after sampling.
6.2 Operating procedures
6.2.1 The operating parameters of the time-proportional sampler should meet the following ranges: a. Required sample volume: 5~20L
b. Single sampling volume, 1--1.5mL
c. Maximum sampling frequency: 30 samples/min. 6.2.2 The flow-proportional sampler should be calculated and checked to ensure that: a. The sampling frequency does not exceed the maximum sampling frequency, b. The single sampling volume does not exceed the sampling range of the sampler at the maximum and minimum flow rates, c. The total sample volume does not exceed the capacity of the sample receiver. 6.2.3 For long-distance pipelines with relatively stable flow rates, time-proportional sampling should be used as a priority. 6.3 Operational inspection
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During the operation of the sampler, the following conditions shall be checked regularly: 6.3.1 Sampling controller
a: The flow meter shall operate normally;
b, The sample counter shall operate normally:
c. There is no low flow rate alarm in the main line;
d. There is no high liquid level alarm in the sample receiver.
6.3.2 Sampler
a: There is sample flowing into the sample receiver;
b, The system shall not leak
c, The heating system shall operate normally;
d. The liquid flow in the fast sampling loop shall be normal. 6.4 Sample qualification inspection
After sampling, the sample shall be checked for qualification, that is, the sampler characteristic coefficient PF shall be within the range of 0.9 to 1.1 (For the calculation method of the characteristic coefficient PF, see Note ④ in Appendix A).
Safety Precautions
7.1 Both the sample receiver and the sample container must comply with the design regulations of the pressure vessel. Each container should be marked with the tare weight, the last pressure test date and the maximum allowable working pressure at ambient temperature. 7.2 Appropriate safety valves should be installed in the automatic sampling system. 7.3 The sample receiver should be equipped with a pressure relief device. When sampling, sufficient oil-free space should be left. 4 During the handling of the sample receiver and the sample container, liquid splashing and leakage of toxic and flammable gases should be avoided. 5 During the sampling operation, the operator should avoid inhaling petroleum vapor. 7.6 All electronic components connected to the automatic sampling equipment should comply with the explosion-proof requirements of the site when placed on site. 7.7 When transporting portable sample receivers (especially when transported by air), the relevant national safety regulations on the water, land and air transportation of flammable substances and pressure vessels should be complied with.
$Y 5317—88
Appendix A
Automatic sampler characteristic report form
(Supplement)
A sampler characteristic report form should be filled in for each sampling operation and submitted to the laboratory and relevant oil transportation management departments respectively. Automatic sampler characteristic report
Sampler type
Sampling date
Crude oil label
Crude oil type
Crude oil quantity, m\
Maximum flow rate, m'/h
Sampling rate, m
Number of sampling
Calculated sample volume, L①
Cumulative sample volume, L
Characteristic coefficient?
No fault③
Fault
Cause of fault
Note, ①For flow ratio sampling
C=(V/B)6/1000(1.)
For time ratio sampling
C-nb/1000 (L )
Sampler installation point
Where V
-the liquid volume flowing through the pipeline section at the interception point during sampling, m\B-sampling rate, m*/sample:
b-one sampling, mL/sample (determined by experiment): number of sampling,
@PF-A/C
A-accumulated sample volume, L
C-calculated sample volume, L
③The characteristic coefficient (PF) is within the range of 0.9-1.1, all mechanical parts in the crude oil sampling system (flow meter, controller, sampling valve, counter, etc.) have no mechanical wear, and the sampling rate is proportional to the flow in the main line, which is "fault-free" sampling. ④The characteristic coefficient (PF) is outside the range of 0.91.1, there is wear of mechanical parts in the crude oil sampling system, and the sampling rate is not proportional to the flow in the main line, which is faulty sampling.
SY 531788
Additional Notes:
This standard is proposed by the Ministry of Petroleum Industry and is under the jurisdiction of the Oil and Gas Measurement Professional Committee of the Standardization Committee of the Ministry of Petroleum Industry. This standard is drafted and interpreted by the Metrology and Testing Institute of the Ministry of Petroleum Industry. The main drafter of this standard is Liu Qingrui.1 Sample receivers can be divided into two categories
SY 5317--B8
a: Fixed sample receiver: a sample receiver permanently placed on site; b. Portable sample receiver, with a quick disconnect connection device, easy to disconnect or connect with the sampler and sample mixer. 5.4.2 The sample receiver should be installed with a level gauge or a device with equivalent functions, such as a weighing device. 5.4.3 The sample receiver and sample container should be installed with a short section. Except for the safety valve, all short sections should be installed with plugs. 5.4.4 For high-freezing point crude oil, the sample receiver and its short section should be heated or insulated to avoid sample solidification and make the sample easy to flow out. 5.4.5 The sample receiver and sample container should be cleaned regularly, and leak tests and pressure tests should be performed. 5.4.6 The sample container should be affixed or tied with an oil-resistant label, and the mark on the label should be permanent. The following items should be recorded on the label: a. Sampling location: b. Sampling start date and time: c. Sampling end date and time, d. Sample label number or sample container number e. Name of the liquid taken f. The amount of liquid represented by the sample: tank number (and type), ship name and pipeline parameters, etc. h. Sampling month; i. Name of the sampler. 6 Operation instructions 6.1 Notes 6.1.1 When the automatic sampling system fails or needs maintenance, sampling should be carried out in accordance with GB4756 "Petroleum Liquid Petroleum Product Sampling Method (Manual Method)". 6.1.2 The integrity of the sample should be maintained during the sample transfer process, and changes in the sample should be prevented during the sampling process, such as the volatilization of volatile components or oxidation of the sample.
6.1.3 Before sampling, the automatic sampler and all connecting pipelines should be flushed, and the flushing liquid should be discharged into a water bucket or a safe sewage system to prevent toxic substances from entering the atmosphere or sewage systems with openings. 6.1.4 During the sampling process, the sample should be protected from environmental influences. In operations where open containers are allowed, the container should be closed immediately after sampling.
6.2 Operating procedures
6.2.1 The operating parameters of the time-proportional sampler should meet the following ranges a. Required sample volume: 5~20L
b. Single sampling volume, 1--1.5mL
c. Maximum sampling frequency: 30 samples/min. 6.2.2 The flow-proportional sampler should be calculated and checked to ensure that: a. The sampling frequency does not exceed the maximum sampling frequency, b. The single sampling volume does not exceed the sampling range of the sampler at the maximum and minimum flow rates C. The total sample volume does not exceed the capacity of the sample receiver. 6.2.3 For long-distance pipelines with relatively stable flow rates, time-proportional sampling should be preferred. 6.3 Operation Inspection
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During the operation of the sampler, the following conditions should be checked regularly: 6.3.1 Sampling Controller
a: The flow meter should operate normally;
b, the sample counter should operate normally;
c. There is no low flow rate alarm in the main line;
d. There is no high liquid level alarm in the sample receiver.
6.3.2 Sampler
a: There is sample flowing into the sample receiver;
b, the system should not leak
c, the heating system should work normally,
d. The liquid flow in the fast sampling loop should be normal. 6.4 Sample qualification check
After sampling, the sample should be checked for qualification, that is, the sampler characteristic coefficient PF should be within the range of 0.9 to 1.1 (the calculation method of the characteristic coefficient PF is shown in Note ④ of Appendix A).
Safety precautions
7.1 Both the sample receiver and the sample container must comply with the design regulations of the pressure vessel. Each container should be marked with the tare weight, the last pressure test date and the maximum allowable working pressure at ambient temperature. 7.2 Appropriate safety valves should be installed in the automatic sampling system. 7.3 The sample receiver should be equipped with a pressure relief device. When sampling, sufficient oil-free space should be left. 4 During the handling of the sample receiver and the sample container, liquid splashing and leakage of toxic and flammable gases should be avoided. 5 During the final sampling operation, the operator should avoid inhaling petroleum vapor. 7.6 When all electronic components connected to the automatic sampling equipment are placed on site, they should meet the explosion-proof requirements of the site. 7.7 When transporting portable sample receivers (especially when transporting by air), the relevant national safety regulations on water, land and air transportation of flammable materials and pressure vessels should be met.
$Y 5317—88
Appendix A
Automatic sampler characteristic report sheet
(Supplement)
The sampler characteristic report sheet should be filled in for each sampling operation and submitted to the laboratory and the relevant oil transportation management department respectively. Automatic sampler characteristic report
Sampler type
Sampling date
Crude oil label
Crude oil type
Crude oil quantity, m\
Maximum flow rate, m'/h
Sampling rate, m
Number of sampling
Calculated sample volume, L①
Cumulative sample volume, L
Characteristic coefficient?
No fault③
Fault
Cause of fault
Note, ①For flow ratio sampling
C=(V/B)6/1000(1.)
For time ratio sampling
C-nb/1000 (L )
Sampler installation point
Where V
-the liquid volume flowing through the pipeline section at the interception point during sampling, m\B-sampling rate, m*/sample:
b-one sampling, mL/sample (determined by experiment): number of sampling,
@PF-A/C
A-accumulated sample volume, L
C-calculated sample volume, L
③The characteristic coefficient (PF) is within the range of 0.9-1.1, all mechanical parts in the crude oil sampling system (flow meter, controller, sampling valve, counter, etc.) have no mechanical wear, and the sampling rate is proportional to the flow in the main line, which is "fault-free" sampling. ④The characteristic coefficient (PF) is outside the range of 0.91.1, there is wear of mechanical parts in the crude oil sampling system, and the sampling rate is not proportional to the flow in the main line, which is faulty sampling.
SY 531788
Additional Notes:
This standard is proposed by the Ministry of Petroleum Industry and is under the jurisdiction of the Oil and Gas Measurement Professional Committee of the Standardization Committee of the Ministry of Petroleum Industry. This standard is drafted and interpreted by the Metrology and Testing Institute of the Ministry of Petroleum Industry. The main drafter of this standard is Liu Qingrui.1 Sample receivers can be divided into two categories
SY 5317--B8
a: Fixed sample receiver: a sample receiver permanently placed on site; b. Portable sample receiver, with a quick disconnect connection device, easy to disconnect or connect with the sampler and sample mixer. 5.4.2 The sample receiver should be installed with a level gauge or a device with equivalent functions, such as a weighing device. 5.4.3 The sample receiver and sample container should be installed with a short section. Except for the safety valve, all short sections should be installed with plugs. 5.4.4 For high-freezing point crude oil, the sample receiver and its short section should be heated or insulated to avoid sample solidification and make the sample easy to flow out. 5.4.5 The sample receiver and sample container should be cleaned regularly, and leak tests and pressure tests should be performed. 5.4.6 The sample container should be affixed or tied with an oil-resistant label, and the mark on the label should be permanent. The following items should be recorded on the label: a. Sampling location: b. Sampling start date and time: c. Sampling end date and time, d. Sample label number or sample container number e. Name of the liquid taken f. The amount of liquid represented by the sample: tank number (and type), ship name and pipeline parameters, etc. h. Sampling month; i. Name of the sampler. 6 Operation instructions 6.1 Notes 6.1.1 When the automatic sampling system fails or needs maintenance, sampling should be carried out in accordance with GB4756 "Petroleum Liquid Petroleum Product Sampling Method (Manual Method)". 6.1.2 The integrity of the sample should be maintained during the sample transfer process, and changes in the sample should be prevented during the sampling process, such as the volatilization of volatile components or oxidation of the sample.
6.1.3 Before sampling, the automatic sampler and all connecting pipelines should be flushed, and the flushing liquid should be discharged into a water bucket or a safe sewage system to prevent toxic substances from entering the atmosphere or sewage systems with openings. 6.1.4 During the sampling process, the sample should be protected from environmental influences. In operations where open containers are allowed, the container should be closed immediately after sampling.
6.2 Operating procedures
6.2.1 The operating parameters of the time-proportional sampler should meet the following ranges a. Required sample volume: 5~20L
b. Single sampling volume, 1--1.5mL
c. Maximum sampling frequency: 30 samples/min. 6.2.2 The flow-proportional sampler should be calculated and checked to ensure that: a. The sampling frequency does not exceed the maximum sampling frequency, b. The single sampling volume does not exceed the sampling range of the sampler at the maximum and minimum flow rates C. The total sample volume does not exceed the capacity of the sample receiver. 6.2.3 For long-distance pipelines with relatively stable flow rates, time-proportional sampling should be preferred. 6.3 Operation Inspection
$Y 5317—88
During the operation of the sampler, the following conditions should be checked regularly: 6.3.1 Sampling Controller
a: The flow meter should operate normally;
b, the sample counter should operate normally;
c. There is no low flow rate alarm in the main line;
d. There is no high liquid level alarm in the sample receiver.
6.3.2 Sampler
a: There is sample flowing into the sample receiver;
b, the system should not leak
c, the heating system should work normally,
d. The liquid flow in the fast sampling loop should be normal. 6.4 Sample qualification check
After sampling, the sample should be checked for qualification, that is, the sampler characteristic coefficient PF should be within the range of 0.9 to 1.1 (the calculation method of the characteristic coefficient PF is shown in Note ④ of Appendix A).
Safety precautions
7.1 Both the sample receiver and the sample container must comply with the design regulations of the pressure vessel. Each container should be marked with the tare weight, the last pressure test date and the maximum allowable working pressure at ambient temperature. 7.2 Appropriate safety valves should be installed in the automatic sampling system. 7.3 The sample receiver should be equipped with a pressure relief device. When sampling, sufficient oil-free space should be left. 4 During the handling of the sample receiver and the sample container, liquid splashing and leakage of toxic and flammable gases should be avoided. 5 During the final sampling operation, the operator should avoid inhaling petroleum vapor. 7.6 When all electronic components connected to the automatic sampling equipment are placed on site, they should meet the explosion-proof requirements of the site. 7.7 When transporting portable sample receivers (especially when transporting by air), the relevant national safety regulations on water, land and air transportation of flammable materials and pressure vessels should be met.
$Y 5317—88
Appendix A
Automatic sampler characteristic report sheet
(Supplement)
The sampler characteristic report sheet should be filled in for each sampling operation and submitted to the laboratory and the relevant oil transportation management department respectively. Automatic sampler characteristic report
Sampler type
Sampling date
Crude oil label
Crude oil type
Crude oil quantity, m\
Maximum flow rate, m'/h
Sampling rate, m
Number of sampling
Calculated sample volume, L①
Cumulative sample volume, L
Characteristic coefficient?
No fault③
Fault
Cause of fault
Note, ①For flow ratio sampling
C=(V/B)6/1000(1.)
For time ratio sampling
C-nb/1000 (L )
Sampler installation point
Where V
-the liquid volume flowing through the pipeline section at the interception point during sampling, m\B-sampling rate, m*/sample:
b-one sampling, mL/sample (determined by experiment): number of sampling,
@PF-A/C
A-accumulated sample volume, L
C-calculated sample volume, L
③The characteristic coefficient (PF) is within the range of 0.9-1.1, all mechanical parts in the crude oil sampling system (flow meter, controller, sampling valve, counter, etc.) have no mechanical wear, and the sampling rate is proportional to the flow in the main line, which is "fault-free" sampling. ④The characteristic coefficient (PF) is outside the range of 0.91.1, there is wear of mechanical parts in the crude oil sampling system, and the sampling rate is not proportional to the flow in the main line, which is faulty sampling.
SY 531788
Additional Notes:
This standard is proposed by the Ministry of Petroleum Industry and is under the jurisdiction of the Oil and Gas Measurement Professional Committee of the Standardization Committee of the Ministry of Petroleum Industry. This standard is drafted and interpreted by the Metrology and Testing Institute of the Ministry of Petroleum Industry. The main drafter of this standard is Liu Qingrui.2 Calculations and checks should be performed on the flow rate proportional sampler to ensure that: a. The sampling frequency does not exceed the maximum sampling frequency, b. The sampling volume does not exceed the sampling range of the sampler at the maximum and minimum flow rates, and c. The total sample volume does not exceed the capacity of the sample receiver. 6.2.3 For long-distance pipelines with relatively stable flow rates, time proportional sampling should be used as a priority. 6.3 Operation inspection
$Y 5317—88
During the operation of the sampler, the following conditions should be checked regularly: 6.3.1 Sampling controller
a: The flow meter should operate normally;
b, the sample counter should operate normally:
c. There is no low flow rate alarm in the main line;
d. There is no high liquid level alarm in the sample receiver.
6.3.2 Sampler
a: Sample flows into the sample receiver;
b, the system should not leak
c, the heating system should work normally,
d. The liquid flow in the fast sampling loop should be normal. 6.4 Sample qualification check
After sampling, the sample should be checked for qualification, that is, the sampler characteristic coefficient PF should be within the range of 0.9 to 1.1 (the calculation method of the characteristic coefficient PF is shown in Note ④ of Appendix A).
Safety precautions
7.1 Both the sample receiver and the sample container must comply with the design regulations of the pressure vessel. Each container should be marked with the tare weight, the last pressure test date and the maximum allowable working pressure at ambient temperature. 7.2 Appropriate safety valves should be installed in the white dynamic sampling system. 7.3 The sample receiver should be equipped with a pressure relief device. When sampling, sufficient oil-free space should be left. 4. During the handling of sample receivers and sample containers, liquid splashing and leakage of toxic and flammable gases should be avoided. 5. During sampling operations, operators should avoid inhaling petroleum vapor. 7.6 All electronic components connected to the automatic sampling equipment should comply with the explosion-proof requirements of the site when placed on site. 7.7 When transporting portable sample receivers (especially when transported by air), the relevant national safety regulations on water, land and air transportation of flammable substances and pressure vessels should be complied with.
$Y 5317—88
Appendix A
Automatic sampler characteristic report sheet
(Supplement)
The sampler characteristic report sheet should be filled in for each sampling operation and submitted to the laboratory and the relevant oil transportation management department respectively. Automatic sampler characteristic report
Sampler type
Sampling date
Crude oil label
Crude oil type
Crude oil quantity, m\
Maximum flow rate, m'/h
Sampling rate, m
Number of sampling
Calculated sample volume, L①
Cumulative sample volume, L
Characteristic coefficient?Www.bzxZ.net
No fault③
Fault
Cause of fault
Note, ①For flow ratio sampling
C=(V/B)6/1000(1.)
For time ratio sampling
C-nb/1000 (L )
Sampler installation point
Where V
-the liquid volume flowing through the pipeline section at the interception point during sampling, m\B-sampling rate, m*/sample:
b-one sampling, mL/sample (determined by experiment): number of sampling,
@PF-A/C
A-accumulated sample volume, L
C-calculated sample volume, L
③The characteristic coefficient (PF) is within the range of 0.9-1.1, all mechanical parts in the crude oil sampling system (flow meter, controller, sampling valve, counter, etc.) have no mechanical wear, and the sampling rate is proportional to the flow in the main line, which is "fault-free" sampling. ④The characteristic coefficient (PF) is outside the range of 0.91.1, there is wear of mechanical parts in the crude oil sampling system, and the sampling rate is not proportional to the flow in the main line, which is faulty sampling.
SY 531788
Additional Notes:
This standard is proposed by the Ministry of Petroleum Industry and is under the jurisdiction of the Oil and Gas Measurement Professional Committee of the Standardization Committee of the Ministry of Petroleum Industry. This standard is drafted and interpreted by the Metrology and Testing Institute of the Ministry of Petroleum Industry. The main drafter of this standard is Liu Qingrui.2 Calculations and checks should be performed on the flow rate proportional sampler to ensure that: a. The sampling frequency does not exceed the maximum sampling frequency, b. The sampling volume does not exceed the sampling range of the sampler at the maximum and minimum flow rates, and c. The total sample volume does not exceed the capacity of the sample receiver. 6.2.3 For long-distance pipelines with relatively stable flow rates, time proportional sampling should be used as a priority. 6.3 Operation inspection
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During the operation of the sampler, the following conditions should be checked regularly: 6.3.1 Sampling controller
a: The flow meter should operate normally;
b, the sample counter should operate normally:
c. There is no low flow rate alarm in the main line;
d. There is no high liquid level alarm in the sample receiver.
6.3.2 Sampler
a: Sample flows into the sample receiver;
b, the system should not leak
c, the heating system should work normally,
d. The liquid flow in the fast sampling loop should be normal. 6.4 Sample qualification check
After sampling, the sample should be checked for qualification, that is, the sampler characteristic coefficient PF should be within the range of 0.9 to 1.1 (the calculation method of the characteristic coefficient PF is shown in Note ④ of Appendix A).
Safety precautions
7.1 Both the sample receiver and the sample container must comply with the design regulations of the pressure vessel. Each container should be marked with the tare weight, the last pressure test date and the maximum allowable working pressure at ambient temperature. 7.2 Appropriate safety valves should be installed in the white dynamic sampling system. 7.3 The sample receiver should be equipped with a pressure relief device. When sampling, sufficient oil-free space should be left. 4. During the handling of sample receivers and sample containers, liquid splashing and leakage of toxic and flammable gases should be avoided. 5. During sampling operations, operators should avoid inhaling petroleum vapor. 7.6 All electronic components connected to the automatic sampling equipment should comply with the explosion-proof requirements of the site when placed on site. 7.7 When transporting portable sample receivers (especially when transported by air), the relevant national safety regulations on water, land and air transportation of flammable substances and pressure vessels should be complied with.
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Appendix A
Automatic sampler characteristic report sheet
(Supplement)
The sampler characteristic report sheet should be filled in for each sampling operation and submitted to the laboratory and the relevant oil transportation management department respectively. Automatic sampler characteristic report
Sampler type
Sampling date
Crude oil label
Crude oil type
Crude oil quantity, m\
Maximum flow rate, m'/h
Sampling rate, m
Number of sampling
Calculated sample volume, L①
Cumulative sample volume, L
Characteristic coefficient?
No fault③
Fault
Cause of fault
Note, ①For flow ratio sampling
C=(V/B)6/1000(1.)
For time ratio sampling
C-nb/1000 (L )
Sampler installation point
Where V
-the liquid volume flowing through the pipeline section at the interception point during sampling, m\B-sampling rate, m*/sample:
b-one sampling, mL/sample (determined by experiment): number of sampling,
@PF-A/C
A-accumulated sample volume, L
C-calculated sample volume, L
③The characteristic coefficient (PF) is within the range of 0.9-1.1, all mechanical parts in the crude oil sampling system (flow meter, controller, sampling valve, counter, etc.) have no mechanical wear, and the sampling rate is proportional to the flow in the main line, which is "fault-free" sampling. ④The characteristic coefficient (PF) is outside the range of 0.91.1, there is wear of mechanical parts in the crude oil sampling system, and the sampling rate is not proportional to the flow in the main line, which is faulty sampling.
SY 531788
Additional Notes:
This standard is proposed by the Ministry of Petroleum Industry and is under the jurisdiction of the Oil and Gas Measurement Professional Committee of the Standardization Committee of the Ministry of Petroleum Industry. This standard is drafted and interpreted by the Metrology and Testing Institute of the Ministry of Petroleum Industry. The main drafter of this standard is Liu Qingrui.
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