The state standard of the union cf. Sampling from vertical tanks

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STATE STANDARD OF THE UNION OF THE SSR

OIL AND PETROLEUM PRODUCTS

SAMPLING METHODS

This standard does not apply to liquefied gases and delayed coking petroleum coke.

The standard complies with ISO 3170-75 regarding sampling from drums, drums, cans, cans, bottom sampling from tanks and safety requirements and ISO 3171-75 regarding automatic sampling from pipelines.

The standard uses terms according to GOST 15895 and GOST 26098.

1. EQUIPMENT

1.1. For sampling of oil and oil products, samplers are used, indicated in Table. 1 and application.

Table 1

Characteristics of oil or oil product	storage, vehicle, container	Sampling equipment and tools
Petroleum products with saturated vapor pressure of 100 kPa (750 mm Hg) and higher according to GOST 1756	Tanks for storage of oil products with increased pressure of saturated vapors, oil tankers, railway and automobile tanks	Stationary and portable samplers that allow hermetic sampling and ensure the preservation of sample quality PGO type samplers according to GOST 14921 and other pressure sampling vessels
	Tanks are vertical cylindrical, rectangular (constant section in height)	Stationary samplers: reduced portion with valves according to GOST 13196-93; with a perforated intake tube (Fig. 1); for point sampling from three levels (Fig. 2); valves at different levels along the height of the tank wall (only for oil). Portable samplers: metal (Fig. 3-5); a bottle in a metal frame (Fig. 6); thermostatic (Fig. 7)
Oil and oil products with saturated vapor pressure below 100 kPa (750 mm Hg) according to GOST 1756	Underground storage facilities in rock salt deposits constructed by leaching	Sampling valves installed on the product pipeline at the head of the underground storage
	Underground storage facilities of the mine type, built in rocks with positive and negative temperature; ice-soil storages	Portable samplers (see drawing 3) and metal-framed bottle (see drawing 6)
	Oil tankers, rail and truck tanks, trench tanks and horizontal cylindrical tanks
Oil and oil products with saturated vapor pressure below 100 kPa (750 mm Hg) according to GOST 1756	Pipelines	Automatic or manual samplers for sampling from the pipeline
	Barrels, cans, bottles, cans	Sampling tubes (Fig. 8)
Liquid petroleum products	Rubber tanks	Glass and metal pipes, durite hoses with a diameter of 9 - 12 mm
Ointment-like petroleum products	Barrels, cans, drums, cans, etc.	Probes: helical (Fig. 9), with a longitudinal cutout (Fig. 10), piston (Fig. 11), straight probe without cutout (Fig. 12)
Solid fusible and infusible petroleum products	Barrels, boxes, bags, wagons for oil bitumen	Knives, scoops, shovels, chisels, chisels, cleavers, axes
Powdered petroleum products	Bags, packages, containers	Probe (Fig. 13)

1.2. Portable samplers for sampling oil and liquid petroleum products from a given level must have caps or plugs that ensure their tightness and easily open at a given level.

1.3. The mass of the portable sampler must be sufficient to ensure its immersion in the oil or oil product.

1.4. The sampler is inspected before each sampling. It should not have cracks. Plugs, covers, gaskets should not have defects that violate the tightness of the sampler.

Portable samplers, samplers, sample receivers, tubes, probes, etc. before sampling oil or oil products must be clean and dry.

Inventory for sampling and storage of samples of liquid petroleum products after use should be treated with a detergent or rinsed with unleaded gasoline; equipment for sampling and storage of samples of oil and ointment-like oil products after washing with a solvent should be washed with hot water until the residues of oil products are completely removed. The washed inventory must be dried and stored in a place protected from dust and precipitation.

To avoid contamination, portable samplers are carried in covers, cases or other packaging.

1.5. The sampler for manual sampling from the pipeline must contain the following main components:

sampling device (Fig. 14, 15, 15a, 15b).

The parameters of slot-type sampling tubes are given in Appendix 2.

(Revised edition, Rev. No. 1).

1.5.1. The design of the sampling device must be strong enough to withstand bending moments caused by top speed flow in the pipeline, resist vibration, and create minimal disturbance to the flow in the pipeline.

1.5.2. The diameter of the sampling tube, if the sampling device consists of a single tube, or the smallest diameter of the sampling tube, if the sampling device consists of several tubes, must be:

6 mm - mri kinematic viscosity of oil up to 15 mm 2 /s (15 cSt) at a temperature of 20 ° C;

12 mm - with a kinematic viscosity of oil equal to or higher than 15 mm 2 /s (15 cSt) at a temperature of 20 °C.

To ensure normal operation of the pump in the sampling circuit, the diameter of the sampling tube can be increased.

1.5.3. Depending on the drive of the locking device, automatic and manual samplers are used.

The locking device is a valve that serves to bypass the sample through the sampling device into the sampling collector and is operated manually.

1.5.4.2. Pressure vessels of the 1st and 2nd types must have a safety valve to relieve excess pressure.

1.5.4.3. The atmospheric vessel is a container with one opening and is used for sampling oil or oil products with a saturated vapor pressure of not more than 40 kPa (300 mm Hg). The container with the sample must be hermetically sealed with a lid (cork).

1.5.4.4. The sample collector is made of a material that is resistant to the effect of the sampled oil or oil product based on the operating temperature and pressure, which is 1.5 times higher than the operating one.

1.5.4.5. Sample collectors of all types are used as sample receivers intended for transportation and storage of samples. The requirements for sample collectors must comply with those specified in clause 1.5.4.

Connecting tubes and valves of the sampling circuit from the sampling point to the sampler should be with a minimum number of bends, without extensions, pockets and other places where mechanical impurities, water and vapors can accumulate.

All connections and connecting pipes must be tight.

1.6. Automatic sampling is carried out using automatic samplers periodically - at regular intervals - or depending on the pumping speed.

1.6.1. For automatic sampling, the locking device of the sampler shall be actuated by electric, electromagnetic or pneumatic actuators.

1.6.2. To obtain a given sample at certain intervals, a regulator is used in the automatic sampler circuit, which starts working simultaneously with the start of pumping.

1.6.3. The design of the sample collector for sampling volatile oil or oil product with a saturated vapor pressure of more than 40 kPa (300 mm Hg) must ensure the accumulation of the sample without contact with air and at the same pressure as in the pipeline.

The sampling scheme using such a sampler is shown in Fig. 17.

The connection and disconnection of the sampler to the sampling system must be airtight.

2. SAMPLING METHODS

2.1. The volume of the combined sample is set in the regulatory and technical documentation (NTD) for specific products.

2.2. Tank sampling

2.2.1. Before sampling from the tank, oil and oil products are settled for at least 2 hours and the sediment of water and contaminants are removed.

To check the removal of water and contaminants, at the request of the customer representative, a sample is taken from the siphon valve installed in the lower position.

2.2.2. A sample from a tank with an oil product under a pressure of more than 1.96 kPa (200 mm of water column) is taken without depressurization of the tank.

2.2.3. A sample of oil or oil product from a tank with a pontoon or a floating roof is taken from a perforated column.

2.3. Sampling from vertical tanks

2.3.1. For taking a combined sample of oil and oil products

in one step, stationary samplers are used according to GOST 13196 or with a perforated sampling tube (see Fig. 1).

For the lower point of oil sampling, the level of the lower cut of the receiving and distributing pipe (cracker) along the inner diameter is taken, and when sampling the oil product - the level at a distance of 250 mm from the bottom of the tank.

2.3.2. Point samples of oil or oil products from a vertical cylindrical or rectangular tank are taken with a stationary (see Fig. 2) or portable sampler from three levels:

lower: for oil - bottom cut receiving and distributing branch pipe (cracker) along the inner diameter, for oil products - 250 mm above the bottom of the tank.

For a tank with a receiving-distributing pipe in the intake, the lower level of oil sampling is taken as the level at a distance of 250 mm from the bottom of the tank.

The combined sample of oil or oil product is made by mixing point samples of the upper, middle and lower levels in a ratio of 1:3:1.

2.3.3. Point samples from the tank in which the oil product is compounded, when checking the homogeneity of the oil product, are taken according to clause 2.3.2 and analyzed separately.

At the request of the customer's representative, point samples of the oil product are taken every 1000 mm of the oil column height, while point samples of the upper and lower levels are taken according to clause 2.3.2. The surface of the oil product is taken as the origin of the first 1000 mm.

2.3.4. Point samples at a height of the oil or oil product level in the tank not higher than 2000 mm (or the residue after emptying) are taken from the upper and lower levels according to clause 2.3.2.

The combined sample is made by mixing the same volume of point samples of the upper and lower levels.

If the oil product level is less than 1000 mm (residue after emptying), one point sample is taken from the lower level according to clause 2.3.2.

2.4. Sampling from horizontal tanks

2.4.1. Point samples of oil or oil products from a horizontal cylindrical tank with a diameter of more than 2500 mm are taken with a portable sampler from three levels:

top - 200 mm below the surface of oil or oil product;

medium - from the middle of the height of the column of oil or oil product;

the lower one - 250 mm higher than the lower inner generatrix of the tank.

The combined sample is made up by mixing point samples of the upper, middle and lower levels in a ratio of 1:6:1.

2.4.2. Point samples of oil or oil products from a horizontal cylindrical tank with a diameter of less than 2500 mm, regardless of the degree of filling, as well as from a horizontal cylindrical tank with a diameter of more than 2500 mm, but filled to a height equal to half the diameter or less, are taken from two levels: from the middle of the height of the liquid column and 250 mm above the lower inner generatrix of the tank.

When the height of the oil product level is less than 500 mm, one point sample is taken from the lower level according to clause 2.4.1.

2.4.3. At the request of the consumer, a bottom sample of the oil product is taken from a horizontal cylindrical tank with a portable metal sampler (see Fig. 4 and 5).

2.5. Sampling from trench tanks

2.5.1. Point samples of oil products from a trench-type tank are taken with a portable sampler from the upper, middle and lower levels, corresponding to 0.93; 0.64; 0.21 volume of oil product (counting from below).

The combined sample is made by mixing point samples of the upper, middle and lower levels in a ratio of 1:3:3.

2.5.2. Point samples from a tank filled with oil products with different densities (differences of more than 2 kg / m 3) are taken from seven levels corresponding to 0.93; 0.78; 0.64; 0.50; 0.36; 0.21; 0.07 volume of oil product (counting from below).

A pooled sample is made by mixing incremental samples of the same volume.

2.6. Sampling from rubber-fabric tanks

A point sample of the oil product from a rubber-fabric tank is taken with a metal or glass tube or a durite hose from a level located at a height of 50-60 mm from the bottom panel of the tank.

2.7. Sampling from underground storages of mine type, constructed in rocks with positive and negative temperatures

The selection of spot samples of oil or oil products from underground storage facilities of a mine type is carried out through a vertical shaft; sampling levels and compilation of the pooled sample - in accordance with paragraph 2.4.

A combined sample from an underground storage facility with several vertical shafts is made up by mixing pooled samples of each shaft that are equal in volume.

2.8. Sampling from underground storage facilities in rock salt deposits constructed by leaching

2.8.1. A sample of oil or oil product from an underground storage is taken from a sampling valve installed on a pipeline at the head of an underground storage, pumping part of the product into a ground tank.

To do this, the annular space between the columns filled with brine and oil (oil product) is preliminarily washed by pumping oil or oil product into a surface tank in a volume equal to five volumes of the annulus. An incremental sample is taken at the end of the wash.

2.9. Sampling from ice-soil storages

2.9.1. The selection of point samples and the compilation of a combined sample of an oil product from an ice-soil storage is carried out in accordance with paragraphs. 2.3 or 2.4 depending on the geometric shape of the vault.

2.10. Sampling from tankers

2.10.1. Point samples from the tank of a tanker with an oil or oil product level height of more than 3000 mm are taken with a portable sampler from three levels:

upper - 250 mm below the surface of oil or oil product;

medium - from the middle of the height of the column of oil or oil product;

The combined sample is made up by mixing point samples of the upper, middle and lower levels in a ratio of 1:3:1.

2.10.2. Point samples from the tank of a tanker with an oil or oil product level height of 3000 mm or less are taken from two levels:

medium - from the middle of the height of the column of oil or oil product;

lower - 250 mm above the bottom of the tank.

The combined sample is made by mixing point samples of the middle and lower levels in a ratio of 3:1.

2.10.3. If the ship is loaded with one type of oil or oil product of the same brand, the combined sample is made by mixing the combined samples of each tank with a capacity of 1000 m 3 or more and at least 25% of the number of all tanks with a capacity of less than 1000 m 3, including tanks that are loaded at the beginning and at the end of loading .

A pooled sample for a ship is made by mixing pooled samples from individual tanks in proportion to the volume of product in each of these tanks.

2.10.4. If a tanker is loaded with oil various kinds or oil products of various grades, the combined samples are for each group of tanks with oil separate species or an oil product of a separate brand, similarly to the compilation of a combined sample for a ship in accordance with clause 2.10.3.

2.10.5. A pooled sample for a ship or a group of tanks with oil or oil products intended for export, long-term storage or a customer's representative is made up of pooled samples from each tank in accordance with paragraph 2.10.3.

2.10.6. If the ship is loaded sequentially through one pipeline with oil of various types or oil products of various grades, additional spot samples are taken at loading points and a separately combined sample is made for the tank from which the loading of oil of each type or oil product of each grade begins.

2.10.7. The combined sample of the oil or oil product residue for a vessel or a group of tanks is made up of point samples taken from the middle of the residue height from 25% of all tanks, mixing in proportion to the volume of oil or oil product in each of these tanks.

When loading a ship with oil or oil product intended for export or a representative of the customer, the combined sample of the residue for the ship or group of tanks is made up of point samples taken from each tank, mixing in proportion to the volume of oil or oil product in each tank.

2.11. Sampling from railway and road tanks and wagons for oil bitumen

2.11.1. A point sample from a railway or truck tank is taken with a portable sampler from a level located at a height of 0.33 of the tank diameter from the lower internal generatrix.

A bottom sample of an oil product or oil is taken with a portable metal sampler (see Fig. 4, 5).

2.11.2. Point samples for several tanks with oil of the same type or oil product of the same brand are taken according to clause 2.11.1 from every fourth tank, but not less than from two tanks.

In this case, the combined sample is made up by mixing point samples in proportion to the volumes of oil or oil product in the tanks from which the samples were taken.

2.11.3. When loading oil products of different grades through one pipeline, spot samples from tanks from which the loading of oil products of each grade began are taken and analyzed separately.

2.11.4. Spot samples of oil products intended for export, long-term storage or the Ministry of Defense, are selected from each tank in accordance with paragraph 2.11.1.

A pooled sample for tanks shipped to the same destination is made by mixing incremental samples in proportion to the volume of product in the tanks.

2.11.5. One spot sample is taken from the oil bitumen car from the bitumen surface of any bunker.

A combined sample for several wagons is made by mixing point samples of the same volume from each wagon.

2.12. The procedure for sampling oil or oil products from tanks, underground storage facilities, vehicles by stationary and portable samplers

2.12.1. Before taking a sample from the sampling system of a stationary sampler, a liquid is poured into another vessel, which should not be included in the sample. The volume of liquid to be drained must be at least two volumes of the sampling system of the stationary sampler.

2.12.2. From vertical, horizontal, trench-type tanks, tankers of tankers, railway and road tanks, underground storages of mine type, ice-ground storages, a sample of oil or oil product is taken with a portable sampler as follows:

measure the level of oil or oil product;

calculate incremental sampling levels;

lowering the closed sampler to a predetermined level so that the opening through which it is filled is at this level;

open the lid or stopper, fill the sampler and lift it up.

Samples from several levels are taken sequentially from top to bottom.

2.12.3. A bottom sample from a tank or vehicle is taken as follows:

the sampler (see Fig. 4) is lowered, installed on the bottom of the tank or vehicle, the plug is removed from the fitting and held until the sample is filled. The filled sampler is lifted and the sample is poured into the sampler;

the sampler (see Fig. 5) is lowered onto the bottom of the tank or vehicle. When touching the bottom, the rod rises, and oil or an oil product begins to flow into the gap formed. The sampler is kept in this position until it is filled, the sample is lifted and poured into the sampler.

2.12.4. A sample of the oil product from the siphon tap is taken with a portable sampler (see Fig. 3).

2.12.5. When measuring the temperature and density of oil or oil products, the sampler is kept at a given level until it is filled for at least 5 minutes.

Instead of holding the thermostatic sampler for 5 minutes, it is allowed to rinse it with oil or oil product taken from the level at which the temperature or density should be measured.

2.12.6. A bottle with a sample of a volatile oil product with a normalized saturated vapor pressure is removed from the frame, hermetically sealed, and a dry, clean bottle is inserted to take the next sample.

2.12.7. When compiling a pooled sample, each incremental sample is mixed, the required volume is taken and poured into one vessel.

The pooled sample is made immediately after sampling.

2.13. Pipeline sampling

2.13.1. General requirements

2.13.1.1. A sample of oil or oil product from the pipeline is taken by a stationary sampler. Schemes of sampling from the pipeline are shown in Fig. 18a and 18b. The sampling tubes are mounted on the disperser body (Fig. 19).

The dispersant parameters are given in Appendix 3.

2.13.1.2. A sample is taken from the pipeline only during pumping at a liquid velocity at the inlet to the sampling device equal to the average linear velocity of the liquid in the pipeline in the same direction.

2.13.1.3. It is allowed to take a sample when the fluid velocity at the inlet to the sampling device is not less than half or not more than twice the average linear velocity of the liquid in the pipeline.

2.13.1.4. The sampling device is installed inside the pipeline in a homogeneous flow (the content of water, salts and mechanical impurities is the same in the cross section) of liquid in a vertical or horizontal section of the pipeline at a high linear velocity of the liquid, after a pump or agitator.

2.13.1.5. On the vertical section of the pipeline, the sampling device is installed at the end of the section in the direction of fluid movement at a distance of half the diameter of the pipeline before the beginning of its bend, if the pipeline section is only ascending or only descending.

The sampling device is installed at the end of the second section in the direction of liquid movement at a distance of half the pipeline diameter before the beginning of its bend, if the pipeline has ascending and descending vertical sections located side by side.

The length of only the ascending or only descending vertical section of the pipeline, or the total length of the vertical sections located side by side, must be at least six pipeline diameters.

2.13.1.6. On a horizontal section of the pipeline, the sampling device exit assembly is placed on top.

2.13.1.7. On a vertical or horizontal section of the pipeline, through which a uniform flow of oil or oil product flows, a sampling device is installed in the form of a single tube with a bent end, regardless of the diameter of the pipeline. The bent end of the tube is placed along the axis of the pipeline towards the flow (Fig. 14).

2.13.1.8. With an inhomogeneous liquid flow, a slot-type sampling device with one or five holes (see Fig. 15a, 15b) oriented towards the flow is installed vertically along the diameter of the pipeline.

It is allowed to install the sampling device in the form of sampling tubes with bent ends directed towards the flow:

one - with a diameter of up to 100 mm;

three - with a diameter of 100 to 400 mm;

five - with a diameter of over 400 mm.

(New edition, Rev. No. 1).

2.13.1.9. The sampling device, consisting of one sampling tube, is installed in accordance with paragraph 2.13.1.7.

2.13.1.10. In a sampling device of five tubes, the open bent ends of the tubes are installed along the vertical section of the pipeline (Fig. 15) as follows:

one tube diameter d 1 - on the axis of the pipeline;

two tubes in diameter d 2 - on both sides of the horizontal axis vertically at a distance of 0.4 of the radius of the pipeline;

two tubes in diameter d 3 - on both sides of the horizontal axis vertically at a distance of 0.8 of the pipeline radius.

Tube diameter ratio d 1 :D 2 :D 3 should be 6:10:13.

2.13.1.11. In a three-tube sampling device, the open bent ends of the tubes are set as follows:

one tube - on the axis of the pipeline;

two tubes - on both sides of the horizontal axis vertically at a distance of 0.66 of the pipeline radius.

The tubes must be the same diameter.

2.13.1.12. When sampling oil products obtained by on-line mixing, the sampling device must be at least 25 pipeline diameters downstream from the last component inlet to ensure mixing of all components and obtaining a sample from a homogeneous stream.

2.13.1.13. When sampling a heated high-viscosity oil or oil product, to prevent solidification, it is necessary to provide thermal insulation or heating of the sampler and its connections.

2.13.1.14. The sampler is placed as close as possible to the sampling device and the sample is filled to no more than 90% of its capacity.

2.13.1.15. A sample of volatile oil or oil product is not poured from the sample collector. The sample collector is disconnected and replaced with another one.

An oil and oil product sample with a saturated vapor pressure of not more than 40 kPa (300 mm Hg) after thorough mixing in a tightly closed sample container may be poured from the sample container into a sample container with an appropriate label.

2.13.1.16. When attaching or detaching the sampler or pouring the sample into the sampler, the sample must not be contaminated.

2.13.1.17. The slot-type sampling device consists of a stabilizer (Fig. 20) and a sampling tube. The design of the device with one hole is shown in Fig. 15a, with five holes - hell. 15b. The stabilizer parameters are calculated according to the algorithm (Appendix 4).

2.13.2. Automatic sampling from the pipeline

2.13.2.1. The combined sample is automatically compiled from incremental samples, the volume of which is set from 1 to 10 cm 3 . The minimum number of incremental samples must be at least 300. The volume and number of incremental samples are determined by the time and volume of pumping. The volume of the combined sample must be at least 3000 cm 3 .

The autosampler regulator must be sealed.

2.13.1.2.2. For sampling by an automatic sampler, it is necessary to ensure the constant movement of a part of the pumped oil or oil product through the sampling device along the bypass line from the main pipeline (along the sampling loop). The sample is taken from the sampling loop without stopping this movement.

2.13.2.3. When sampling oil or oil products with an automatic sampler, manual sampling from the sampling circuit (Fig. 18) must also be provided. If there is no movement along the sampling circuit, the sample is taken after draining the oil or oil product into another vessel in a volume equal to three times the volume of oil or oil product that fills the entire sampling system up to the tap from which the sample is drained.

2.13.3. Manual sampling of oil or oil product from a pipeline

2.13.3.1. Only a point sample is taken with a manual sampler.

2.13.3.2. Point samples are taken at equal volumes of pumping oil or oil products or at regular intervals.

2.13.3.3. With a pumping capacity of not more than 500 m 3 /h, point samples are taken every 500 m 3. A pooled sample is made by mixing incremental samples of the same volume.

2.13.3.4. With a pumping capacity of more than 500 m 3 /h, point samples are taken at least every hour. The pooled sample is made up of a mixture of incremental samples proportional to the volume of oil or oil product pumped during this time.

2.13.3.5. With periodic pumping, samples are taken according to paragraphs. 2.13.3.2-2.13.3.4, but not less than three point samples at equal pumping volumes or equal time intervals.

2.13.3.6. A point sample of volatile oil or oil product is taken hermetically into a closed-type sampler according to clause 1.5.4.

When using a sample receiver with equalized pressure, it is connected to the sampling cock, the necessary backpressure is created, the sample is smoothly filled, the valves on the sample receiver are closed, then the sampling cock and the sample receiver is disconnected.

The sample container used with brine before sampling is completely filled with brine and the valves are closed. The temperature of the brine should not be higher than the temperature of the sampled oil or oil product. Connect a tap or valve on the sample receiver to the sample drain valve on the pipeline and open all valves on the inlet side of the sample receiver. Open the bottom or outlet valve smoothly so that the brine is slowly displaced by the sample entering the sample receiver. Adjust the flow so that the pressures in the sample receiver and pipeline are equal. Close the outlet valve as soon as oil or oil product starts to come out of the outlet of the sample receiver, then sequentially close the inlet valve of the sample receiver and the valve for draining the sample on the pipeline and disconnect the sample receiver.

The sample receiver with sample accumulation by air displacement is installed vertically and connected to the sampling cock through the bottom valve. Open the valves on the sample receiver, then the sampling cock and let the sampled oil or oil product pass through the sample receiver in three times the volume of the sample receiver. At the end of washing, close the valves on the sample receiver, the sampling cock and disconnect the sample receiver.

When sampling oil and oil products, to determine the content of water and salts, sample receivers are used with sample accumulation by air displacement.

A sampler of the PGO type according to GOST 14921 is used as a sampler using brine or air. At a pressure of saturated vapors of oil or oil products not more than 67 kPa (500 mm Hg), it is allowed to use a bottle with two tubes in a cork.

2.13.3.7. A sample of oil or oil product with a saturated vapor pressure of not more than 40 kPa (300 mm Hg) is allowed to be taken into an open vessel. Adjust the drain cock on the pipeline so that a continuous uniform stream flows out of it, which is directed into the sample container through a tube reaching to its bottom.

2.13.4. Sampling of oil and oil products from pipelines for analysis by in-line automatic devices (quality analyzers)

2.13.4.1. A sample of oil or oil product is taken with a slot-type sampling device or in the form of sampling tubes with bent ends in accordance with clause 2.13.1.8. The sampling device of both types must provide the oil flow necessary for the operation of the quality analyzer.

(New edition, Rev. No. 1).

2.13.4.2. When using a continuous quality analyzer, the quality indicators of oil or oil products are determined instantly when the sample is continuously pumped through the sampling device.

When using a discrete action quality analyzer, the quality indicators of oil or oil products are determined for a certain period of time.

2.13.4.3. The quality analyzer should be installed after the pump and disperser (Fig. 18a) and after the pump (Fig. 18b) in the circuit.

(Revised edition, Rev. No. 1, amendment).

2.13.4.4. When choosing and installing a quality analyzer, taking and analyzing samples of oil or oil products, the following requirements must be met:

sampling of oil or oil products must comply with clause 2.13.1;

quality indicators of oil or oil product should be determined with the main flow parameters that can affect these indicators (temperature, pressure, speed). If these conditions are not met, appropriate corrections must be applied to the measurement result.

2.14. Sampling of oil products from barrels, cans, canisters and other transport containers

2.14.1. One point sample of the oil product is taken from a unit of transport container.

The combined sample of the packaged oil product is made up of a mixture of point samples taken in accordance with the table. 2.

table 2

Number of containers P	Number of incremental samples T	Number of containers P	Number of incremental samples T
From 1 to 3 incl.		From 1729 to 2197 incl.
		» 2198 » 2744 »
		» 2745 » 3375 »
» 126 » 216 »		» 3376 » 4096 »
» 217 » 343 »		» 4097 » 4913 »
» 344 » 512 »		» 4914 » 5832 »
» 513 » 729 »		» 5833 » 6859 »
» 730 » 1000 »		» 6860 » 8000 »
» 1001 » 1331 »
» 1332 » 1728 »

* The value is rounded to whole numbers.

2.14.2. Sampling is carried out in a place protected from dust and precipitation.

The liquid oil product is mixed before sampling from the container. The contents of the barrel must be mixed by rolling for 5 minutes. The contents of the can, jars, bottles are mixed for 5 minutes by thorough shaking or from using a special mixer. The surface around plugs, lids and the bottom is cleaned before opening.

2.14.3. The sampling tube for sampling a point sample of a liquid oil product is lowered to the bottom of the container, then the upper hole is closed with a finger and the tube is removed from the container. The sample is drained by opening the closed end of the tube. The combined sample of a liquid oil product is made up by mixing point samples in accordance with table. 2.

2.14.4. A point sample of a greasy oil product is taken with a piston or helical probe, with a longitudinal cutout or straight without a cutout.

At the place where the probe is immersed, the top layer of the oil product 25 mm thick is removed.

The screw-shaped probe is lowered, screwing into the oil product, to the bottom of the container, then removed and a sample is taken from it with a spatula.

The piston probe is lowered by pressing into the oil product to the bottom of the container and, turning by 180 °, cut through the oil product with a wire soldered to the lower end of the probe, then the probe is removed and a sample is squeezed out of it with a piston.

The probe with a longitudinal cut is lowered, screwing into the oil product, to the bottom of the container, and then the sample is removed and released from it with a spatula inserted into the upper part of the slot, moving it down.

A straight probe without a cut is immersed to the bottom of the container with molten bitumen, then removed and a sample is scraped off with a knife.

The 5 mm thick oil layer at the top of the probe is not included in the sample.

A combined sample of a greasy oil product is made by mixing point samples without melting them.

2.14.5. A point sample of solid fusible oil products from a barrel and a bag filled in bulk is taken in the form of a piece using a knife, chisel, chisel, ax, cleaver.

An incremental sample from a box or bag filled with tiles or pieces is taken as one tile or one piece.

A combined sample for a fusible oil product packed in bags or barrels is made by breaking off one piece of approximately equal size from each selected piece or tile and mixing them without melting.

2.14.6. A point sample of the oil product, which is in a molten state in barrels, is taken and a combined sample is made according to paragraph 2.14.3 or 2.14.5.

2.14.7. A point sample of a powdered oil product from a bag, package or container is taken with a probe (Fig. 13), immersing it to the full thickness of the oil product.

The pooled sample is made by mixing incremental samples.

2.15. Sampling of unpackaged petroleum products

2.15.1. Point samples molded in the form of castings (blanks) of solid fusible oil are taken from every hundred castings in the form of a casting piece, but not less than 10 pieces from a batch.

2.15.2. Point samples of unshaped solid fusible oil products are taken from each ton with a shovel in the form of a piece, but not less than 10 pieces from a batch.

2.15.3. A combined sample of shaped or unshaped solid fusible oil is made up by breaking off three pieces of approximately equal masses from each selected piece and mixing them without melting.

2.15.4. A point sample of a solid infusible oil product is taken with a mass of 1-2 kg with a shovel or scoop when forming a stack from different places of a bucket, scraper, container, etc. Pieces larger than 250 mm are not included in the sample.

The combined sample is made up of incremental samples, the number of which is indicated in table. 3.

Table 3

The combined sample of a solid infusible oil product is crushed to pieces no larger than 25 mm in size no later than after 1 day. The crushed sample is thoroughly mixed, then scattered on a sheet of stainless material in an even layer in the form of a square and divided diagonally into four triangles. The oil product from any two opposite triangles is discarded, the remaining ones are mixed, re-crushed to pieces of 5-10 mm in size and mixed. By repeated quartering and mixing, the mass of the combined sample is adjusted to 2-3 kg.

3. SAFETY REQUIREMENTS

3.1. When performing sampling work, the safety regulations and fire safety when handling oil and oil products.

The air condition of the working area is controlled in accordance with the requirements of GOST 12.1.005.

3.3. Portable samplers should be made of a material that does not form sparks upon impact (aluminum, bronze, brass, etc.).

3.4. The sampler takes a sample of oil or oil product in the presence of an observer (understudy).

3.5. When sampling, the sampler should stand with its back to the wind in order to prevent inhalation of oil vapors or oil products.

3.6. Sampling in wells, pits and other recesses must be carried out by the sampler in a hose self-priming gas mask ISH-13 in accordance with GOST 12.4.034.

3.7. Sampling of oil or oil products in gas-hazardous places, as well as sulfur-hydrogen-containing oils and oil products, must be carried out by the sampler in a filtering gas mask FU-13 of grades A, V, G, KD and others in accordance with GOST 12.4.034.

3.8. Explosion-proof lamps must be installed at sampling points. When sampling in unlit places, explosion-proof portable lamps should be used. Portable lamps are turned on and off behind the earthen rampart or tank farm fence.

3.9. Sampling is carried out in special clothing and footwear made from materials that do not accumulate static electricity, in accordance with the requirements of GOST 12.4.124.

3.10. Flexible, non-sparking metal cables are used to fasten the portable sampler. When using cords (ropes, etc.) made of non-conductive materials, a stranded, non-sparking, bare metal conductor connected to the sampler must be fixed on their surface. Before sampling, the cable or conductor must be grounded to the elements of the tank or vehicle.

3.11. A sample of oil or oil product from the tank should be taken no earlier than 2 hours after filling.

It is allowed to take a sample from the tank of a sea tanker 30 minutes after the end of the tank loading.

It is allowed to take a sample from a railway tank car 10 minutes after the completion of filling.

3.13. Samples of leaded gasoline must be taken by the sampler wearing gloves made of waterproof impregnated material or oil and petrol resistant material in accordance with GOST 12.4.010, in leather boots and protective clothing in accordance with GOST 12.4.111 and GOST 12.4.112.

3.14. A sample of molten bitumen is taken in gloves according to GOST 12.4.010 and goggles according to GOST 12.4.013.

3.15. A sample of a solid infusible oil product is taken and crushed in anti-dust respirators of the RP-K, F-62Sh and U-2k brands and mittens according to GOST 12.4.010.

Sample grinding areas should be equipped with local ventilation.

4. PACKAGING, LABELING AND STORAGE OF SAMPLES

4.1. Before packaging, a sample of oil or oil product is mixed.

The sample is poured into clean, dry glass bottles. The bottle is filled to no more than 90% capacity.

A sample of a greasy oil product is placed in a clean, dry glass, tin or plastic jar.

A sample of a solid oil product is packed in cellophane, polyethylene film, thick paper, which ensures the safety of the sample, or placed in a bucket with a paper bag.

4.2. The combined sample of oil or oil product is divided into two equal parts. One part of the sample is analyzed, the other is kept sealed in case of disagreement in assessing the quality of oil or oil product.

When transported on ships, the combined sample of oil or oil product is divided into parts, taking into account the number of recipients. One part of the sample is analyzed, the other part is stored in case of disagreement in assessing the quality of oil or oil product, the rest is transferred to the recipients.

For oil or oil product intended for export and shipped in rail tank cars or via an oil product pipeline, the combined sample is divided into three parts. One part is analyzed, the rest is stored in case of disagreement in the quality assessment.

When shipping oil or oil products for export by sea vessels, the combined sample is divided into five parts. One part is analyzed, two parts are kept in case of disagreement in the quality assessment. The remaining two parts are handed over to the captain of the ship. One of them is stored on the ship, the other is transferred to the recipient.

4.3. Sample bottles should be hermetically sealed with stoppers or screw caps with gaskets that do not dissolve in oil or oil products, jars should be tightly closed with lids. The neck of a corked bottle or jar is wrapped with plastic wrap or other dense material that ensures the safety of the sample, and tied with twine, the ends of which are threaded into the hole in the label. The ends of the twine are sealed or filled with sealing wax on a plate of thick cardboard or wood and sealed. It is allowed to stick a label to a bottle, jar, package.

4.4. The label must indicate:

sample number according to the register;

name of oil or brand of oil product;

name of the supplier company;

tank number and filling height;

lot number, unit of transport container, tank;

name of vessel and tank number, etc. from which the sample was taken;

date, time of selection;

sample storage time;

standard designation or specifications for oil or oil products;

position and names of the persons who selected and sealed the sample.

4.5. Samples of oil or oil products are stored in a room that meets fire safety requirements for storerooms of flammable and combustible liquids. Samples of oil or oil product with normalized saturated vapor pressure are stored at a temperature not exceeding 20 °C.

4.6. Samples are stored in a cabinet or box with nests made of non-combustible material.

4.7. In case of disagreement in assessing the quality of the sample, oil products are stored for 45 days from the date of shipment.

For petroleum products intended for the customer's representative and for long-term storage, a sample in case of disagreement in quality assessment is stored for 3 months.

4.8. Oil samples in case of disagreement in the quality assessment during its transportation through the pipeline are stored for no more than 25 days, and for transportation by other modes of transport - no more than 45 days.

4.9. For oil or oil products intended for export, the period of storage of samples in case of disagreement in the assessment of quality is:

for oil - 3 months, for oil products - 4 months.

When oil and oil products are shipped to the CMEA member countries, as well as to the DPRK and the PRC, samples are stored for 6 months.

ATTACHMENT 1

Mandatory

SAMPLER TYPES

Stationary sampler with perforated sampling tube

1 - perforated tube; 2 - support stand; 3 - tap

Stationary sampler for sampling

spot samples from three levels

1 - tap; 2 - sampling tubes; 3 - carrying arm; 4 - float

1 - frame; 2 - lid

Metal portable sampler

1 - housing with an inlet pipe; 2 - cap with fitting

Metal portable sampler

1 - bracket; 2 - cover with valve; 3 - frame; 4 - stem with valve; 5 - bottom

Bottle in a metal frame

1 - bottle; 2 - metal carcass; 3 - Cork; 4 - Castle

Thermostatic sampler

1 - outer cylinder; 2 - inner cylinder; 3 - Cork

sampling tube

1 - leg; 2 - a tube; 3 - ear

Slotted stylus

1 - piston rod; 2 - body made of thin-walled tube; 3 - wire

Probe straight without cutout

Probe for sampling powdered petroleum products

1 - outer tube; 2, 3 - pens; 4 - inner pipe

The layout of the sampling device in the form of a single tube

Sampling device tube layout

along the pipeline section

1 - valve; 2 - sampling tube; 3 - pipeline

Single Hole Slot Type Sampler

1 - hole; 2 - a tube; 3 - stabilizer; 4 - lid; 5 - Union; 6 - pipeline; 7 - mounting pipe

Note. Parameters b 1 and h 1 is determined according to the table. 1 app 2.

(Introduced additionally, Rev. No. 1).

Five Hole Slot Type Sampler

1 1 - 1 5 - holes; 2 - a tube; 3 - stabilizer; 4 - lid; 5 - Union; 6 - pipeline; 7 - mounting socket

Note. Parameters b 1 and h 1 is determined according to the table. 2 applications 2.

(Introduced additionally, Rev. No. 1).

Equalized pressure sampler

1 - safety valve; 2 - piston rod; 3 - piston position indicator; 4 - piston; 5 - bypass device

Scheme of sampling from the pipeline using

equalized pressure sampler

1 - pipeline; 2 - sampling device; 3 - pump; 4 - locking device; 5 - regulator; 6 - sampler; 7 - check valve

Scheme of sampling from the pipeline using slot-type sampling devices

1 - pipeline; 2 - sampling device; 3, 8 - samplers; 4 - crane for manual sampling; 5 - pump; 6 - regulators; 7 - locking device; 9 - check valve; 10 - dispersants

(New edition, Rev. No. 1, amendment).

Scheme for sampling oil and oil products from pipelines

1 - pipeline; 2 - sampling device; 3,8 - sampler; 4 - crane for manual sampling; 5 - pump; 6 - regulator; 7 - locking device; 9 - check valve

(Introduced additionally, Rev. No. 1).

Dispersant

1 - frame; 2 - flange; 3 - cavitating sleeve; 4 And 5 - grooves and protrusions, respectively; 6 - sampling tube

Note. Dispersant parameters are specified in Appendix 3

(Introduced additionally, Rev. No. 1).

Note. Parameters x k and y k stabilizer are determined by the algorithm given in Appendix 4

APPENDIX 2

Mandatory

PARAMETERS OF SLOT-TYPE SAMPLING TUBE

Table 1 - Single Hole Sampling Tube (Figure 15a)

Dimensions in mm

hj at the inner diameter of the sampling tube D 1

Nominal diameter D y pipeline

Notes:

1. Permissible deviation of the width of the hole 1 from the calculated one - no more than 0.1 mm, height:

0.2 mm - at 40< D y< 100;

0.4 mm - at 100< D y< 350;

0.8 mm - at 350< D y < 600;

1.5 mm - at 600< D y< 1400.

3. Plots of conjugation of the upper and lower boundaries of the slotted hole with the side boundaries are allowed to be performed along a line with a radius of curvature of 0.2 - 1.0 of the width of the conjugation sections of the indicated boundaries.

Table 2 - Sample tube with five holes (Fig. 15b)

Dimensions in mm

Hole No. (Fig. 15b)

h j When the inside diameter of the sampling tube D 1

Nominal diameter D y pipeline

Hole 1 1

Hole 1 2

Hole 1 3

Hole 1 4

Hole 1 5

Notes:

1. Permissible deviation of the hole width 1 1 - 1 5 from the calculated one - no more than 0.1 mm, height:

0.2 mm - at 40< D at< 100;

0.4 mm - at 100< D at< 350;

0.8 mm - at 350< D at< 600;

1.5 mm - at 600< D at< 1400.

2. A gap between the lower sampling point and the lower generatrix of the pipeline is not more than 5 mm.

3. Plots of conjugation of the upper and lower boundaries of the slotted holes with the side boundaries are allowed to be made along the line, with a radius of curvature of 0.2 - 1.0 of the width of the conjugation sections of the indicated boundaries.

(Introduced additionally, Amendment No. 1).

APPENDIX 3

Mandatory

Dispersant parameters (Fig. 19)

Dimensions in mm

(d 3 - d 2)

(L 1: L 3 )

Notes:

1. Allowed:

b= 13 mm at a nominal pressure in the bypass line of not more than 1.6 MPa;

b= 17 mm at a conditional pressure in the bypass line of not more than 4.0 MPa.

2. When the diameter of the bypass line is less than 40 mm, for the installation of the dispersant on the bypass line, transitions are set to a diameter equal to d 1 .

(Introduced additionally, Amendment No. 1).

APPENDIX 4

Mandatory

CALCULATION OF THE STABILIZER PARAMETERS OF A SLOT SAMPLING DEVICE

Surface FROM stabilizer (Fig. 20) is performed over points whose projection onto the O xy plane is a parabola of the second degree with parameters X to and at to (k = one, . . . , 11), mm, determined by the formulas:

D which is equal to or greater than 350 mm:

(1)

where D 1 - sampling tube inner diameter, mm, index k varies from 1 to 11;

For pipeline, nominal diameter D y which is less than 350 mm:

(2)

Notes:

1. Diameter D 1 , sampling tube choose according to the diameter D at the pipeline (Appendix 2, Tables 1-2).

2. Height of the stabilizer (coinciding with the value at m) may differ from the calculated one by no more than 3 mm.

3. Roughness tolerance Ra surface With stabilizer: Ra< 0.1 mm.

Insofar as D at > 350 mm, to determine the parameters x k and at k we use formulas (1). The results of the calculations are summarized in Table. one.

Table 1

Insofar as D< 350 mm, for dimensioning x k And at k we use formulas (2). The results of the calculations are summarized in Table. 2.

table 2

(Introduced additionally, Amendment No. 1).

INFORMATION DATA

1. APPROVED AND INTRODUCED BY Decree of the USSR State Committee for Standards No. 4453 of December 28, 1985

2. INSTEAD OF GOST 2517-80

3. REFERENCE REGULATIONS AND TECHNICAL DOCUMENTS

	Item number
GOST 12.1.005-88
GOST 12.4.010-75	3.13; 3.14; 3.15
GOST 12.4.013-85
GOST 12.4.034-85
GOST 12.4.111-82
GOST 12.4.112-82
GOST 12.4.124-83

Interstate standard GOST 2517-85
“Oil and oil products. Sampling Methods»
(approved and put into effect by the Decree of the State Standard of the USSR of December 28, 1985 N 4453)

Crude oil petroleum products. Methods of sampling

Introduction date 01.01.87

Instead of GOST 2517-80

This International Standard establishes methods for sampling oil and oil products from tanks, underground storage facilities, oil tankers, rail and truck tanks, pipelines, drums, cans and other storage and transportation means.

This standard does not apply to liquefied gases and delayed coking petroleum coke.

The standard uses terms according to GOST 15895 and GOST 26098.

1. Hardware

1.1. For sampling of oil and oil products, samplers are used, indicated in Table. 1 and .

Table 1

┌──────────────────────┬────────────────────────┬───────────────────────┐

│ Characteristics of oil │ Storage, transport │ Equipment and tools │

│ or oil product │ means, container │ for sampling │

│Oil products with│Storage tanks│Stationary and│

│ pressure of saturated │ products with │ portable │

│steam 100 kPa (750 mm│overpressure│samplers, │

│Hg) and higher in │saturated vapor, │allowing to carry out│

│GOST 1756 │oil tankers, │hermetic sampling│

│ │railway and│and providing│

│ │truck tanks │quality preservation│

│ │ │ samples │

│ │ │PGO-type samplers│

│ │ │according to GOST 14921 and others│

│ │ │sampling vessels│

│ │ │under pressure │

├──────────────────────┼────────────────────────┼───────────────────────┤

│Oil and oil products│Vertical tanks│Stationary │

│with saturated pressure│cylindrical, │samplers: │

│vapours below 100 kPa│rectangular │reduced portioned s│

│(750 mHg) by │(constant section by │ valves by │

│GOST 1756 │height) │GOST 13196; │

│ │ │perforated│

│ │ │intake tube│

│ │ │for selection of point│

│ │ │trials from three levels│

│ │ │cranes on various│

│ │ │height levels│

│ │ │tank walls│

│ │ │(only for oil). │

│ │ │Portable │

│ │ │samplers: │

│ │ │metal │

│ │ │bottle in metal│

│ │ │thermostatic │

│Oil and oil products│Underground storages in│Sampling valves,│

│with pressure saturated│stone deposits│installed on│

│below 100 kPa (750 mm│salts constructed in│product pipeline in│

│Hg), according to GOST 1756 │by leaching method │underground head│

│ │ │ storage │

│ ├────────────────────────┼───────────────────────┤

│ │Underground storage │Portable │

│ │ mine type, │ samplers (see │

│ │temperature; │Portable │

│ │ ice-ground storages │ samplers, │

│ │rail and│sampling from│

│ │ road tanks, │ vertical │

│ │trench tanks│cylindrical and│

│ │type and horizontal│rectangular │

│ │cylindrical │tanks │

│Oil and oil products│Pipelines │Automatic or│

│with saturated pressure│ │manual samplers│

│vapor below 100 kPa│ │for sampling from│

│(750 mmHg) by│ │pipeline │

│GOST 1756 │ │ │

│Liquid petroleum products │Drums, cans, bottles,│Sampling tubes│

│ │Rubber fabric │Glass and│

│ │tanks │metal tubes,│

│ │ │durite hoses│

│ │ │diameter 9-12 mm │

│Ointment-shaped │Barrels, cans, drums,│Probes: helical│

│petroleum products │banks, etc. │(), with a longitudinal│

│ │ │straight stylus without cutout│

│ Solid fusible and │ Barrels, boxes, bags, │ Knives, scoops, shovels, │

│non-fusible │cars for oil bitumen │chisels, chisels, splitters,│

│petroleum products │ │axes │

│Powder │Bags, bags, │Probe () │

│products │containers │ │

└──────────────────────┴────────────────────────┴───────────────────────┘

1.2. Portable samplers for sampling oil and liquid petroleum products from a given level must have caps or plugs that ensure their tightness and easily open at a given level.

1.3. The mass of the portable sampler must be sufficient to ensure its immersion in the oil or oil product.

1.4. The sampler is inspected before each sampling. It should not have cracks. Plugs, covers, gaskets should not have defects that violate the tightness of the sampler.

Portable samplers, samplers, sample receivers, tubes, probes, etc. before sampling oil or oil products must be clean and dry.

To avoid contamination, portable samplers are carried in covers, cases or other packaging.

1.5. The sampler for manual sampling from the pipeline must contain the following main components:

sampling device (see ,);

locking device;

sampler (sampler).

The parameters of slotted sampling tubes are given in .

1.5.1. The design of the sampling device must be strong enough to withstand bending moments due to the maximum flow velocity in the pipeline, resist vibration, and create minimal flow disturbance in the pipeline.

1.5.2. The diameter of the sampling tube, if the sampling device consists of a single tube, or the smallest diameter of the sampling tube, if the sampling device consists of several tubes, must be:

6 mm - at kinematic viscosity of oil up to 15 mm2/s (15 cSt) at a temperature of 20°С;

12 mm - with a kinematic viscosity of oil equal to or higher than 15 mm2/s (15 cSt) at a temperature of 20 C.

To ensure normal operation of the pump in the sampling circuit, the diameter of the sampling tube can be increased.

1.5.3. Depending on the drive of the locking device, automatic and manual samplers are used.

The locking device is a valve that serves to bypass the sample through the sampling device into the sampling collector and is operated manually.

1.5.4. As a sampler designed to accumulate a combined sample during automatic sampling, pressure vessels (closed) and atmospheric vessels (open) are used, depending on the type of oil or oil product being sampled or the analysis being performed.

1.5.4.1. Three types of pressure vessels are used:

1 - with equalized pressure ();

2 - with the accumulation of the sample by displacing the aqueous saturated solution of sodium chloride (brine) that fills them;

3 - with the accumulation of samples by displacing the remaining air in them.

1.5.4.2. Pressure vessels of the 1st and 2nd types must have a safety valve to relieve excess pressure.

1.5.4.5. Sample collectors of all types are used as sample receivers intended for transportation and storage of samples. The requirements for sample collectors must comply with those specified in.

The connecting pipes and valves of the sampling circuit from the sampling point to the sampler should be with a minimum number of bends, without extensions, pockets and other places where mechanical impurities, water and vapors can accumulate.

All connections and connecting pipes must be tight.

1.6. Automatic sampling is carried out using automatic samplers periodically - at regular intervals - or depending on the pumping speed.

1.6.1. For automatic sampling, the locking device of the sampler shall be actuated by electric, electromagnetic or pneumatic actuators.

1.6.2. To obtain a given sample at certain intervals, a regulator is used in the automatic sampler circuit, which starts working simultaneously with the start of pumping.

Sampling scheme using such a sampler is shown in .

The connection and disconnection of the sampler to the sampling system must be airtight.

2. Sampling methods

2.1. The volume of the combined sample is set in the regulatory and technical documentation (NTD) for specific products.

2.2. Tank sampling

2.2.1. Before sampling from the tank, oil and oil products are settled for at least 2 hours and the sediment of water and contaminants are removed.

To check the removal of water and contaminants, at the request of the customer representative, a sample is taken from the siphon valve installed in the lower position.

2.2.2. A sample from a tank with an oil product under a pressure of more than 1.96 kPa (200 mm of water column) is taken without depressurization of the tank.

2.2.3. A sample of oil or oil product from a tank with a pontoon or a floating roof is taken from a perforated column.

2.3. Sampling from vertical tanks

2.3.1. To take a combined sample of oil and oil products in one step, stationary samplers are used according to GOST 13196 or with a perforated sampling tube (see).

2.3.2. Point samples of oil or oil products from a vertical cylindrical or rectangular tank are taken with a stationary (see) or portable sampler from three levels:

lower: for oil - the lower section of the receiving and distributing pipe (cracker) along the inner diameter, for oil products - 250 mm above the bottom of the tank.

For a tank with a receiving-distributing pipe in the intake, the lower level of oil sampling is taken as the level at a distance of 250 mm from the bottom of the tank.

The combined sample of oil or oil product is made by mixing point samples of the upper, middle and lower levels in a ratio of 1:3:1.

2.3.3. Point samples from the tank in which the oil product is compounded are taken and analyzed separately when checking the homogeneity of the oil product.

At the request of the customer's representative, spot samples of the oil product are taken every 1000 mm of the height of the oil column, while spot samples of the upper and lower levels are taken at . The surface of the oil product is taken as the origin of the first 1000 mm.

2.3.4. Spot samples at a level of oil or oil product in the tank not higher than 2000 mm (or the residue after emptying) are taken from the upper and lower levels to .

The combined sample is made by mixing the same volume of point samples of the upper and lower levels.

When the level of the oil product is less than 1000 mm (residue after emptying), one point sample is taken from the lower level to .

2.4. Sampling from horizontal tanks

2.4.1. Point samples of oil or oil products from a horizontal cylindrical tank with a diameter of more than 2500 mm are taken with a portable sampler from three levels:

upper - 200 mm below the surface of oil or oil product;

medium - from the middle of the height of the column of oil or oil product;

lower - 250 mm higher than the lower inner generatrix of the tank.

The combined sample is made up by mixing point samples of the upper, middle and lower levels in a ratio of 1:6:1.

When the height of the oil product level is less than 500 mm, one point sample is taken from the lower level to .

2.4.3. At the request of the consumer, a bottom sample of the oil product is taken from a horizontal cylindrical tank with a portable metal sampler (see and).

2.5. Sampling from trench tanks

The combined sample is made by mixing point samples of the upper, middle and lower levels in a ratio of 1:3:3.

2.5.2. Point samples from a tank filled with oil products with different densities (differences of more than 2 kg/m3) are taken from seven levels corresponding to 0.93; 0.78; 0.64; 0.50; 0.36; 0.21; 0.07 volume of oil product (counting from below).

A pooled sample is made by mixing incremental samples of the same volume.

2.6. Sampling from rubber-fabric tanks

A point sample of the oil product from a rubber-fabric tank is taken with a metal or glass tube or a durite hose from a level located at a height of 50-60 mm from the bottom panel of the tank.

2.7. Sampling from underground storages of mine type, constructed in rocks with positive and negative temperatures

The selection of spot samples of oil or oil products from underground storage facilities of a mine type is carried out through a vertical shaft; sampling levels and composition of the pooled sample - in accordance with .

A combined sample from an underground storage facility with several vertical shafts is made up by mixing pooled samples of each shaft that are equal in volume.

2.8. Sampling from underground storage facilities in rock salt deposits constructed by leaching

2.9. Sampling from ice-soil storages

2.9.1. The selection of point samples and the compilation of a combined sample of an oil product from an ice-ground storage is carried out in accordance with or depending on the geometric shape of the storage.

2.10. Sampling from tankers

2.10.1. Point samples from the tank of a tanker with an oil or oil product level height of more than 3000 mm are taken with a portable sampler from three levels:

upper - 250 mm below the surface of oil or oil product;

medium - from the middle of the height of the column of oil or oil product;

The combined sample is made up by mixing point samples of the upper, middle and lower levels in a ratio of 1:3:1.

2.10.2. Point samples from the tank of a tanker with an oil or oil product level height of 3000 mm or less are taken from two levels:

medium - from the middle of the height of the column of oil or oil product;

lower - 250 mm above the bottom of the tank.

The combined sample is made by mixing point samples of the middle and lower levels in a ratio of 3:1.

2.10.3. If the ship is loaded with one type of oil or oil product of the same brand, the combined sample is made by mixing the combined samples of each tank with a capacity of 1000 m3 or more and at least 25% of the number of all tanks with a capacity of less than 1000 m3, including tanks that are loaded at the beginning and at the end of loading.

A pooled sample for a ship is made by mixing pooled samples from individual tanks in proportion to the volume of product in each of these tanks.

2.10.4. If a tanker is loaded with oil of different types or oil products of different grades, combined samples are compiled for each group of tanks with oil of a particular type or oil product of a particular brand, similarly to the compilation of a combined sample for a vessel in accordance with.

2.10.5. A pooled sample for a ship or group of tanks with oil or oil products intended for export, long-term storage or a customer's representative is made up of pooled samples of each tank in accordance with.

2.10.7. The combined sample of the oil or oil product residue for a ship or a group of tanks is made up of point samples taken from the middle of the residue height from 25% of all tanks, mixing in proportion to the volume of oil or oil product in each of these tanks.

2.11. Sampling from railway and road tanks and wagons for oil bitumen

2.11.1. A point sample from a railway or truck tank is taken with a portable sampler from a level located at a height of 0.33 of the tank diameter from the lower internal generatrix.

A bottom sample of an oil product or oil is taken with a portable metal sampler (see,).

2.11.2. Point samples for several tanks with oil of the same type or oil product of the same brand are taken from every fourth tank, but not less than from two tanks.

In this case, the combined sample is made up by mixing point samples in proportion to the volumes of oil or oil product in the tanks from which the samples were taken.

2.11.3. When loading oil products of different grades through one pipeline, spot samples from tanks from which the loading of oil products of each grade began are taken and analyzed separately.

2.11.4. Spot samples of oil products intended for export, long-term storage or the Ministry of Defense are taken from each tank in accordance with.

A pooled sample for tanks shipped to the same destination is made by mixing incremental samples in proportion to the volume of product in the tanks.

2.11.5. One spot sample is taken from the oil bitumen car from the bitumen surface of any bunker.

A combined sample for several wagons is made by mixing point samples of the same volume from each wagon.

2.12. The procedure for sampling oil or oil products from tanks, underground storage facilities, vehicles by stationary and portable samplers

measure the level of oil or oil product;

calculate incremental sampling levels;

lowering the closed sampler to a predetermined level so that the opening through which it is filled is at this level;

open the lid or stopper, fill the sampler and lift it up.

Samples from several levels are taken sequentially from top to bottom.

2.12.3. A bottom sample from a tank or vehicle is taken as follows:

2.12.5. When measuring the temperature and density of oil or oil products, the sampler is kept at a given level until it is filled for at least 5 minutes.

Instead of holding the thermostatic sampler for 5 minutes, it is allowed to rinse it with oil or oil product taken from the level at which the temperature or density should be measured.

2.12.7. When compiling a pooled sample, each incremental sample is mixed, the required volume is taken and poured into one vessel.

The pooled sample is made immediately after sampling.

2.13. Pipeline sampling

2.13.1. General requirements

2.13.1.1. A sample of oil or oil product from the pipeline is taken by a stationary sampler. The scheme of sampling from the pipeline is shown on and. The dispersant parameters () are given in .

(Changed edition, Rev. N 1).

The length of only the ascending or only descending vertical section of the pipeline, or the total length of the vertical sections located side by side, must be at least six pipeline diameters.

2.13.1.6. On a horizontal section of the pipeline, the sampling device exit assembly is placed on top.

2.13.1.8. With an inhomogeneous liquid flow, a slot-type sampling device with one or five holes (see , ) oriented towards the flow is installed vertically along the diameter of the pipeline.

It is allowed to install the sampling device in the form of sampling tubes with bent ends directed towards the flow.

one - with a diameter of up to 100 mm;

three - with a diameter of 100 to 400 mm;

five - with a diameter of over 400 mm.

(Changed edition, Rev. N 1).

2.13.1.9. A sampling device, consisting of a single sampling tube, is installed in accordance with.

2.13.1.10. In a sampling device of five tubes, the open bent ends of the tubes are installed along the vertical section of the pipeline () as follows:

one tube with a diameter d_1 - on the axis of the pipeline;

two tubes with a diameter of d_2 - on both sides of the horizontal axis vertically at a distance of 0.4 of the pipeline radius;

two tubes with a diameter of d_3 - on both sides of the horizontal axis vertically at a distance of 0.8 of the pipeline radius.

The ratio of tube diameters d_1:d_2:d_3 should be 6:10:13.

2.13.1.11. In a three-tube sampling device, the open bent ends of the tubes are set as follows:

one tube - on the axis of the pipeline;

two tubes - on both sides of the horizontal axis vertically at a distance of 0.66 of the pipeline radius.

The tubes must be the same diameter.

2.13.1.13. When sampling a heated high-viscosity oil or oil product, to prevent solidification, it is necessary to provide thermal insulation or heating of the sampler and its connections.

2.13.1.14. The sampler is placed as close as possible to the sampling device and the sample is filled to no more than 90% of its capacity.

2.13.1.15. A sample of volatile oil or oil product is not poured from the sample collector. The sample collector is disconnected and replaced with another one.

A sample of oil and oil product with a saturated vapor pressure of not more than 40 kPa (300 mm Hg), after thorough mixing in a tightly closed sample container, can be poured from the sample container into a sample container with an appropriate label.

2.13.1.16. When attaching or detaching the sampler or pouring the sample into the sampler, the sample must not be contaminated.

2.13.1.17. The slot-type sampling device consists of a stabilizer () and a sampling tube. The design of a device with one hole is shown on, with five holes - on. The stabilizer parameters are calculated according to the algorithm ().

(Introduced additionally, Rev. N 1).

2.13.2. Automatic sampling from the pipeline

2.13.2.1. The pooled sample is automatically compiled from incremental samples, the volume of which is set from 1 to 10 cm3. The minimum number of incremental samples must be at least 300. The volume and number of incremental samples are determined by the time and volume of pumping. The volume of the pooled sample must be at least 3000 cm3.

The autosampler regulator must be sealed.

2.13.1.2.2. For sampling by an automatic sampler, it is necessary to ensure the constant movement of a part of the pumped oil or oil product through the sampling device along a bypass line from the main pipeline (along the sampling loop). The sample is taken from the sampling loop without stopping this movement.

2.13.2.3. When sampling oil or oil products with an automatic sampler, manual sampling from the sampling circuit () must also be provided. If there is no movement along the sampling circuit, the sample is taken after draining the oil or oil product into another vessel in a volume equal to three times the volume of oil or oil product that fills the entire sampling system up to the tap from which the sample is drained.

2.13.3. Manual sampling of oil or oil product from a pipeline

2.13.3.1. Only a point sample is taken with a manual sampler.

2.13.3.2. Point samples are taken at equal volumes of pumping oil or oil products or at regular intervals.

2.13.3.3. With a pumping capacity of not more than 500 m3/h, point samples are taken every 500 m3. A pooled sample is made by mixing incremental samples of the same volume.

2.13.3.4. With a pumping capacity of more than 500 m3/h, point samples are taken at least every hour. The pooled sample is made up of a mixture of incremental samples proportional to the volume of oil or oil product pumped during this time.

2.13.3.5. With periodic pumping, samples are taken at a time, but not less than three point samples at equal pumping volumes or equal time intervals.

2.13.3.6. A spot sample of volatile oil or oil product is taken hermetically into a closed-type sampler according to .

When sampling oil and oil products, to determine the content of water and salts, sample receivers are used with sample accumulation by air displacement.

2.13.4. Sampling of oil and oil products from pipelines for analysis by in-line automatic devices (quality analyzers)

2.13.4.1. A sample of oil or oil product is taken with a slot-type sampling device or in the form of sampling tubes with bent ends in accordance with. The sampling device of both types must provide the oil flow necessary for the operation of the quality analyzer.

(Changed edition, Rev. N 1).

2.13.4.2. When using a continuous quality analyzer, the quality indicators of oil or oil products are determined instantly when the sample is continuously pumped through the sampling device.

When using a discrete action quality analyzer, the quality indicators of oil or oil products are determined for a certain period of time.

2.13.4.3. The quality analyzer should be installed after the pump and disperser () and after the pump () in the circuit.

2.13.4.4. When choosing and installing a quality analyzer, taking and analyzing samples of oil or oil products, the following requirements must be met:

sampling of oil or oil product must comply with;

2.14. Sampling of oil products from barrels, cans, canisters and other transport containers

2.14.1. One point sample of the oil product is taken from a unit of transport container.

The combined sample of the packaged oil product is a mixture of point samples taken in accordance with table.2.

table 2

┌───────────────────────────────────────────┬───────────────────────────┐

│ Number of containers n │ Number of spot samples m │

│0t 1 to 3 incl. │ All │

├───────────────────────────────────────────┼───────────────────────────┤

│ « 4 « 64 « │ 4 │

│ « 65 « 125 « │ 5 │

│ « 126 « 216 « │ 6 │

│ « 217 « 343 « │ 7 │

│ « 344 « 512 « │ 8 │

│ « 513 « 729 « │ 9 │

│ « 730 » 1000 « │ 10 │

│ « 1001 » 1331 « │ 11 │

│ « 1332 » 1728 « │ 12 │

│ « 1729 » 2197 « │ 13 │

│ « 2198 « 2744 « │ 14 │

│ « 2745 « 3375 « │ 15 │

│ « 3376 « 4096 « │ 16 │

│ « 4097 « 4913 « │ 17 │

│ « 4914 « 5832 « │ 18 │

│ « 5833 « 6859 « │ 19 │

│ « 6860 « 8000 « │ 20 │

2.14.4. A point sample of a greasy oil product is taken with a piston or helical probe, with a longitudinal cutout or straight without a cutout.

At the place where the probe is immersed, the top layer of the oil product 25 mm thick is removed.

The screw-shaped probe is lowered, screwing into the oil product, to the bottom of the container, then removed and a sample is taken from it with a spatula.

The piston probe is lowered by pressing into the oil product to the bottom of the container and, turning by 180 °, the oil product is cut with a wire soldered to the lower end of the probe, then the probe is removed and a sample is squeezed out of it with a piston.

A straight probe without a cut is immersed to the bottom of the container with molten bitumen, then removed and a sample is scraped off with a knife.

The 5 mm thick oil layer at the top of the probe is not included in the sample.

A combined sample of a greasy oil product is made by mixing point samples without melting them.

2.14.5. A point sample of solid fusible oil products from a barrel and a bag filled in bulk is taken in the form of a piece using a knife, chisel, chisel, ax, cleaver.

An incremental sample from a box or bag filled with tiles or pieces is taken as one tile or one piece.

A combined sample for a fusible oil product packed in bags or barrels is made by breaking off one piece of approximately equal size from each selected piece or tile and mixing them without melting.

2.14.6. A point sample of the oil product, which is in a molten state in barrels, is taken and a combined sample is made according to or.

2.14.7. A spot sample of a powdered oil product from a bag, bag or container is taken with a probe (), immersing it to the full thickness of the oil product.

The pooled sample is made by mixing incremental samples.

2.15. Sampling of unpackaged petroleum products

2.15.1. Point samples molded in the form of castings (blanks) of solid fusible oil are taken from every hundred castings in the form of a casting piece, but not less than 10 pieces from a batch.

2.15.2. Point samples of unshaped solid fusible oil products are taken from each ton with a shovel in the form of a piece, but not less than 10 pieces from a batch.

2.15.3. A combined sample of shaped or unshaped solid fusible oil is made up by breaking off three pieces of approximately equal masses from each selected piece and mixing them without melting.

The combined sample is made up of incremental samples, the number of which is indicated in table. 3.

Table 3

┌──────────────────────┬───────────────────────┬────────────────────────┐

│Volume of bucket, scraper, │Serial number of the bucket,│ Number of point │

│container, etc., m3│ scraper, container and │ samples taken from │

│ │ etc. │ one bucket, scraper, │

│ │ │ container, etc. │

│Up to 3 incl. │Every 4th │ 2 │

├──────────────────────┼───────────────────────┼────────────────────────┤

│St. 3 » 5 « │ « 3rd │ 3 │

│ « 5 │ « 2nd │ 4 │

└──────────────────────┴───────────────────────┴────────────────────────┘

3. Security requirements

3.1. When performing sampling work, the safety and fire safety rules for handling oil and oil products should be observed.

The air condition of the working area is controlled in accordance with the requirements of GOST 12.1.005.

3.3. Portable samplers should be made of a material that does not form sparks upon impact (aluminum, bronze, brass, etc.).

3.4. The sampler takes a sample of oil or oil product in the presence of an observer (understudy).

3.5. When sampling, the sampler should stand with its back to the wind in order to prevent inhalation of oil vapors or oil products.

3.6. Sampling in wells, pits and other recesses must be carried out by the sampler in a hose self-priming gas mask ISH-13 in accordance with GOST 12.4.034.

3.7. Sampling of oil or oil products in gas-hazardous places, as well as hydrogen sulfide-containing oils and oil products, must be performed by the sampler in a filtering gas mask FU-13 of grades A, V, G, KD and others in accordance with GOST 12.4.034.

3.9. Sampling is carried out in special clothing and footwear made from materials that do not accumulate static electricity, in accordance with the requirements of GOST 12.4.124.

3.11. A sample of oil or oil product from the tank should be taken no earlier than 2 hours after filling.

It is allowed to take a sample from the tank of a sea tanker 30 minutes after the end of the tank loading.

It is allowed to take a sample from a railway tank car 10 minutes after the completion of filling.

3.14. A sample of molten bitumen is taken in gloves according to GOST 12.4.010 and goggles according to GOST 12.4.013.

3.15. A sample of a solid infusible oil product is taken and crushed in anti-dust respirators of the RP-K, F-62Sh and U-2k brands and mittens according to GOST 12.4.010.

Sample grinding areas should be equipped with local ventilation.

4. Packaging, labeling and storage of samples

4.1. Before packaging, a sample of oil or oil product is mixed.

The sample is poured into clean dry glass bottles. The bottle is filled to no more than 90% capacity.

A sample of a greasy oil product is placed in a clean, dry glass, tin or plastic jar.

A sample of a solid oil product is packed in cellophane, polyethylene film, thick paper, which ensures the safety of the sample, or placed in a bucket with a paper bag.

4.4. The label must indicate:

sample number according to the register;

name of oil or brand of oil product;

name of the supplier company;

tank number and filling height;

lot number, unit of transport container, tank;

the name of the ship and the number of the tank, etc. from which the sample was taken;

date, time of selection;

sample storage time;

designation of the standard or specifications for oil or oil product;

position and names of the persons who selected and sealed the sample.

4.6. Samples are stored in a cabinet or box with nests made of non-combustible material.

4.7. In case of disagreement in assessing the quality of the sample, oil products are stored for 45 days from the date of shipment.

For petroleum products intended for the customer's representative and for long-term storage, a sample in case of disagreement in quality assessment is stored for 3 months.

4.8. Oil samples in case of disagreement in assessing the quality when transporting it through an oil pipeline are stored for no more than 25 days, when transported by other modes of transport - no more than 45 days.

4.9. For oil or oil products intended for export, the period of storage of samples in case of disagreement in the assessment of quality is:

for oil - 3 months,

for oil products - 4 months.

When oil and oil products are shipped to the CMEA member countries, as well as to the DPRK and the PRC, samples are stored for 6 months.

_____________________________

* Within the territory of Russian Federation GOST R 12.4.195-99 applies.

** On the territory of the Russian Federation, GOST R 12.4.013-97 applies.

Attachment 1

Mandatory

Sampler types

Stationary sampler with perforated sampling tube

"Heck. 1. Stationary sampler with a perforated sampling tube"

Stationary sampler for spot sampling from three levels

"Heck. 2. Stationary sampler for point sampling from three levels”

"Heck. 3. Metal portable sampler"

Metal portable sampler

"Heck. 4. Metal portable sampler"

Metal portable sampler

"Heck. 5. Metal portable sampler"

Bottle in a metal frame

"Heck. 6. Bottle in a metal frame "

Thermostatic sampler

"Heck. 7. Thermostatic sampler"

sampling tube

"Heck. 8. Sampling tube»

Helical probe

"Heck. 9. Helical probe "

Slotted stylus

"Heck. 10. Probe with a longitudinal cut "

piston gauge

"Heck. 11. Piston probe "

Straight stylus without cutout

"Heck. 12. Probe straight without cut"

Probe for sampling powdered petroleum products

"Heck. 13. Probe for sampling powdered petroleum products

The layout of the sampling device in the form of a single tube

"Heck. 14. Scheme of the location of the sampling device in the form of a single tube»

Scheme of the location of the tubes of the sampling device along the pipeline section

"Heck. 15. The layout of the tubes of the sampling device along the pipeline section

Single Hole Slot Type Sampler

"Heck. 15a. Single Hole Slit Type Sampler»

Note.

Five Hole Slot Type Sampler

"Heck. 15b. Slot-type sampling device with five holes»

Note. Parameters b_j and h_j are determined according to Appendix 2

Equalized pressure sampler

"Heck. 16. Equalized pressure sampler"

Scheme of sampling from the pipeline using a sampler with equalized pressure

"Heck. 17. Scheme of sampling from the pipeline using a sampler with equalized pressure "

Scheme of oil sampling from the pipeline using slot-type sampling devices

"Heck. 18a. Scheme of oil sampling from the pipeline using slot-type sampling devices"

Scheme for sampling oil and oil products from pipelines

"Heck. 18b. Scheme for sampling oil and oil products from pipelines”

Dispersant

"Heck. 19. Dispersant"

Note. The dispersant parameters are specified in .

Stabilizer

"Heck. 20. Stabilizer"

Note. The parameters x_k and y_k of the stabilizer are determined by the algorithm given in .

2. The height of the stabilizer (coinciding with the value of y_11) may differ from the calculated one by no more than 3 mm.

3. Surface roughness tolerance Ra C stabilizer: Ra< 0,1 мм.

Since D_y > 350 mm, we use the formulas to determine the parameters x_k and y_k. The results of the calculations are summarized in Table. one.

Table 1

┌────┬─────┬─────┬─────┬─────┬─────┬─────┬────┬─────┬─────┬─────┬───────┐

│y_к │ 0.0 │12.2 │24.4 │36.6 │48.8 │61.0 │73.2│85.4 │97.6 │109.8│ 122.0 │

├────┼─────┼─────┼─────┼─────┼─────┼─────┼────┼─────┼─────┼─────┼───────┤

│x_k │31.8 │22.1 │18.0 │14.9 │12.3 │10.0 │7.9 │ 6.0 │ 4.3 │ 2.6 │ 1.0 │

└────┴─────┴─────┴─────┴─────┴─────┴─────┴────┴─────┴─────┴─────┴───────┘

Because D_y< 350 мм, для определения параметров x_k и y_k пользуемся формулами . Результаты расчетов сводим в табл. 2.

table 2

┌────┬─────┬─────┬─────┬────┬─────┬─────┬─────┬─────┬─────┬────┬────────┐

│ k │ 1 │ 2 │ 3 │ 4 │ 5 │ 6 │ 7 │ 8 │ 9 │ 10 │ 11 │

│y_к │ 0.0 │ 8.7 │17.4 │26.1│34.8 │43.6 │52.3 │61.0 │69.7 │78.4│ 87.0 │

├────┼─────┼─────┼─────┼────┼─────┼─────┼─────┼─────┼─────┼────┼────────┤

│x_k │16.8 │11.8 │ 9.7 │8.1 │ 6.8 │ 5.6 │ 4.6 │ 3.6 │ 2.7 │1.8 │ 1.0 │

└────┴─────┴─────┴─────┴────┴─────┴─────┴─────┴─────┴─────┴────┴────────┘

Introduction date01.01.87

This standard does not apply to liquefied gases and delayed coking petroleum coke.

The standard uses terms for GOST 15895 And GOST 26098.

1. Hardware

1.1. For sampling of oil and oil products, samplers are used, indicated in Table. 1 and application.

Table 1

Characteristics of oil or oil product	Storage, vehicle, container	Sampling equipment and tools
Petroleum products with a saturated vapor pressure of 100 kPa (750 mm Hg) and higher according to GOST 1756	Tanks for storage of oil products with increased pressure of saturated vapors, oil tankers, railway and automobile tanks	Stationary and portable samplers that allow hermetic sampling and ensure the preservation of sample quality PGO type samplers according to GOST 14921 and other pressure sampling vessels
GOST 1756	Tanks are vertical cylindrical, rectangular (constant section in height)	Stationary samplers: reduced portion with valves according to GOST 13196-93; with perforated intake tube (Fig. 1 ); for sampling point samples from three levels (Fig. 2 ); valves at different levels along the height of the tank wall (only for oil). Portable samplers: metal (damn. 3 -5 ); bottle in a metal frame (Fig. 6 ); thermostatic (damn. 7 )
Oil and oil products with saturated vapor pressure below 100 kPa (750 mm Hg) according to GOST 1756	Underground storage facilities in rock salt deposits constructed by leaching	Sampling valves installed on the product pipeline at the head of the underground storage
	Underground storages of mine type, constructed in rocks with positive and negative temperatures; ice-soil storages	Portable samplers (see fig. 3 ) and a bottle in a metal frame (see fig. 6 )
	Oil tankers, rail and truck tanks, trench tanks and horizontal cylindrical tanks
Oil and oil products with saturated vapor pressure below 100 kPa (750 mm Hg) according to GOST 1756	Pipelines	Automatic or manual samplers for sampling from the pipeline
	Barrels, cans, bottles, cans	sampling tubes (Fig. 8 )
Liquid petroleum products	Rubber tanks	Glass and metal pipes, durite hoses with a diameter of 9 - 12 mm
Ointment-like petroleum products	Barrels, cans, drums, cans, etc.	Feelers: helical (Fig. 9 ), with a longitudinal cut (Fig. 10 ), piston (damn. 11 ), straight stylus without cutout (Fig. 12 )
Solid fusible and infusible petroleum products	Barrels, boxes, bags, wagons for oil bitumen	Knives, scoops, shovels, chisels, chisels, cleavers, axes
Powdered petroleum products	Bags, packages, containers	Probe (damn. 13 )

1.2. Portable samplers for sampling oil and liquid petroleum products from a given level must have caps or plugs that ensure their tightness and easily open at a given level.

1.3. The mass of the portable sampler must be sufficient to ensure its immersion in the oil or oil product.

1.4. The sampler is inspected before each sampling. It should not have cracks. Plugs, covers, gaskets should not have defects that violate the tightness of the sampler.

Portable samplers, samplers, sample receivers, tubes, probes, etc. before sampling oil or oil products must be clean and dry.

To avoid contamination, portable samplers are carried in covers, cases or other packaging.

1.5. The sampler for manual sampling from the pipeline must contain the following main components:

sampling device (Fig. 14 , 15 , 15a, 15b).

Parameters of slot-type sampling tubes are given in the appendix 2 .

(Changed edition,Change No. 1 ).

1.5.2. The diameter of the sampling tube, if the sampling device consists of a single tube, or the smallest diameter of the sampling tube, if the sampling device consists of several tubes, must be:

6 mm - mri kinematic viscosity of oil up to 15 mm 2 /s (15 cSt) at a temperature of 20 ° C;

12 mm - with a kinematic viscosity of oil equal to or higher than 15 mm 2 /s (15 cSt) at a temperature of 20 °C.

To ensure normal operation of the pump in the sampling circuit, the diameter of the sampling tube can be increased.

1.5.3. Depending on the drive of the locking device, automatic and manual samplers are used.

The locking device is a valve that serves to bypass the sample through the sampling device into the sampling collector and is operated manually.

1.5.4.1. Three types of pressure vessels are used:

1 - with equalized pressure (Fig. 16 );

2 - with the accumulation of the sample by displacing the aqueous saturated solution of sodium chloride (brine) that fills them;

3 - with the accumulation of samples by displacing the remaining air in them.

1.5.4.2. Pressure vessels of the 1st and 2nd types must have a safety valve to relieve excess pressure.

All connections and connecting pipes must be tight.

1.6. Automatic sampling is carried out using automatic samplers periodically - at regular intervals - or depending on the pumping speed.

1.6.1. For automatic sampling, the locking device of the sampler shall be actuated by electric, electromagnetic or pneumatic actuators.

1.6.2. To obtain a given sample at certain intervals, a regulator is used in the automatic sampler circuit, which starts working simultaneously with the start of pumping.

The sampling scheme using such a sampler is shown in Fig. 17 .

The connection and disconnection of the sampler to the sampling system must be airtight.