State standard of the Union of the USSR. Sampling from vertical tanks

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STATE STANDARD OF THE USSR UNION

OIL AND PETROLEUM PRODUCTS

SAMPLING METHODS

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

The standard complies with ISO 3170-75 regarding sampling from barrels, 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. To take samples of oil and petroleum products, the samplers specified in table are used. 1 and appendix.

Table 1

Characteristics of oil or petroleum 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 storing petroleum products with high saturated vapor pressure, oil tankers, railway and road tanks	Stationary and portable samplers allowing for hermetically sealed sampling and ensuring the preservation of sample quality Samplers type PGO according to GOST 14921 and other sampling vessels under pressure
	Vertical cylindrical, rectangular tanks (constant cross-section in height)	Stationary samplers: reduced portion with valves according to GOST 13196-93; with a perforated intake tube (Fig. 1); for taking point samples from three levels (Fig. 2); taps at different levels along the height of the tank wall (oil only). Portable samplers: metal (drawings 3-5); 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 an underground storage facility
	Underground mine-type storage facilities constructed in rocks with positive and negative temperatures; ice-soil storage facilities	Portable samplers (see Figure 3) and a bottle in a metal frame (see Figure 6)
	Oil tankers, railway and road tanks, trench type 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 taking samples from pipelines
	Barrels, cans, bottles, cans	Sampling tubes (Fig. 8)
Liquid petroleum products	Rubber fabric tanks	Glass and metal tubes, durite hoses with a diameter of 9 - 12 mm
Pasty petroleum products	Barrels, cans, drums, cans, etc.	Styli: helical (Fig. 9), with a longitudinal cutout (Fig. 10), piston (Fig. 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 (Fig. 13)

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

1.3. The mass of the portable sampler must be sufficient to ensure that it is immersed in oil or oil product.

1.4. The sampler is inspected before each sample collection. There should be no cracks on it. Plugs, caps, and gaskets must not have any defects that would impair the tightness of the sampler.

Portable samplers, sample collectors, sample receivers, tubes, probes, etc. before taking samples of oil or petroleum products must be clean and dry.

After use, equipment for collecting and storing samples of liquid petroleum products should be treated with a detergent or rinsed with unleaded gasoline; After washing with a solvent, equipment for collecting and storing samples of oil and paste-like petroleum products should be rinsed with hot water until all traces of petroleum products are completely removed. Washed equipment 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. A sampler for manual sampling from a 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.

(Changed edition, Amendment No. 1).

1.5.1. The design of the sampling device must be strong enough to withstand bending moments caused by maximum speed flow in the pipeline, resist vibration, and also 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 - 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 shut-off device, automatic and manual samplers are used.

The shut-off device is a valve that serves to bypass the sample through the sampling device into the sample collector and is manually actuated.

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

1.5.4.3. An atmospheric vessel is a container with one hole and is used for sampling oil or petroleum products with a saturated vapor pressure of no more than 40 kPa (300 mm Hg). The sample container must be hermetically sealed with a lid (stopper).

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

1.5.4.5. Sample collectors of all types are used as sample receivers intended for transporting and storing 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 sample collector must have 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 sealed.

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 sampler shut-off device must be actuated by electric, electromagnetic or pneumatic actuators.

1.6.2. To obtain a given sample at certain intervals, the automatic sampler circuit uses a regulator that comes into operation simultaneously with the start of pumping.

1.6.3. The design of the sample collector for sampling easily evaporating oil or petroleum 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 sample collector is shown in Fig. 17.

The connection and disconnection of the sample collector to the sampling system must be sealed.

2. SAMPLING METHODS

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

2.2. Tank Sampling

2.2.1. Before taking a sample from the tank, oil and petroleum products are allowed to settle for at least 2 hours and water sediment and contaminants are removed.

To check the removal of water and contaminants, at the request of the customer’s representative, a sample is taken from the siphon valve set to the lower position.

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

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

2.3. Sampling from vertical tanks

2.3.1. To collect a combined sample of oil and petroleum products

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

The lower point for taking an oil sample is taken to be the level of the lower cut of the inlet-dispensing pipe (firecracker) along the internal diameter, and when taking a sample of an oil product - the level at a distance of 250 mm from the bottom of the tank.

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

lower: for oil - bottom cut inlet and distribution pipe (cracker) along the internal diameter, for petroleum products - 250 mm above the bottom of the tank.

For a tank in which the inlet-dispenser pipe is located in the receiving area, the lower oil sampling level is taken to be the level at a distance of 250 mm from the bottom of the tank.

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

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

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 product column, while spot 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 starting point for the first 1000 mm.

2.3.4. Spot samples when the level of oil or petroleum product in the tank is not higher than 2000 mm (or the remainder after emptying) are taken from the upper and lower levels according to clause 2.3.2.

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

If the height of 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 petroleum 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;

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

lower - 250 mm above the lower internal generatrix of the tank.

The combined sample is made 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 petroleum 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 internal generatrix of the tank.

If 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 petroleum product is taken from a horizontal cylindrical tank using a portable metal sampler (see Figures 4 and 5).

2.5. Sampling from trench tanks

2.5.1. Point samples of petroleum 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 petroleum product (counted 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 petroleum products of different densities (discrepancies 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 petroleum product (counted from below).

The combined sample is made by mixing point samples of equal volume.

2.6. Sampling from rubber-fabric tanks

A spot sample of an 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 mine-type storage facilities constructed in rocks with positive and negative temperatures

Selection of spot samples of oil or petroleum products from underground mine-type storage facilities is carried out through a vertical shaft; sampling levels and compilation of a combined sample - in accordance with clause 2.4.

A combined sample from an underground storage facility with several vertical shafts is made by mixing equal-volume combined samples from each shaft.

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

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

To do this, the annulus space between the columns filled with brine and oil (petroleum product) is first washed by pumping oil or petroleum product into a ground tank in a volume equal to five volumes of the annulus space. A spot sample is taken at the end of the wash.

2.9. Sampling from ice-soil storage facilities

2.9.1. Selection of spot samples and compilation of a combined sample of petroleum product from the ice-soil storage facility is carried out in accordance with paragraphs. 2.3 or 2.4 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 petroleum 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;

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

The combined sample is made 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 petroleum product level height of 3000 mm or less are taken from two levels:

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

the lower one is 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 a ship is loaded with one type of oil or one grade of oil product, a 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 end of loading .

A pooled sample for a vessel is prepared by mixing pooled samples from individual tanks in proportion to the volume of product in each of those tanks.

2.10.4. If a tanker is loaded with oil various types or petroleum products of various grades, combined samples are made up for each group of tanks with oil a separate type or a separate grade of petroleum product, similar to compiling a combined sample for a ship in accordance with clause 2.10.3.

2.10.5. A combined sample for a ship or a group of tanks with oil or petroleum products intended for export, long-term storage or a representative of the customer is compiled from the combined samples of each tank in accordance with clause 2.10.3.

2.10.6. If a ship is loaded sequentially through one pipeline with oil of different types or petroleum products of different brands, additional point samples are taken at loading points and a separate combined sample is compiled for the tank from which loading of each type of oil or petroleum product of each brand begins.

2.10.7. A combined sample of residual oil or petroleum product for a vessel or group of tanks is made up of point samples taken from the mid-height of the residue from 25% of all tanks, mixed in proportion to the volume of oil or petroleum product in each of these tanks.

When a vessel is loaded with oil or petroleum products intended for export or a representative of the customer, a pooled residue sample for the vessel or group of tanks is composed of point samples taken from each tank, mixed in proportion to the volume of oil or petroleum 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 automobile tank is taken with a portable sampler from a level located at a height of 0.33 of the diameter of the tank from the lower internal generatrix.

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

2.11.2. Spot 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 compiled by mixing point samples in proportion to the volumes of oil or petroleum product in the tanks from which the samples were taken.

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

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

A combined sample for tanks sent to one destination is made by mixing point samples in proportion to the volume of product in the tanks.

2.11.5. From the petroleum bitumen car, one point sample is taken from the surface of the bitumen of any bunker.

A combined sample for several cars is made by mixing point samples of equal volume from each car.

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

2.12.1. Before taking a sample, liquid that should not be included in the sample is drained from the sampling system of a stationary sampler into another container. The volume of drained liquid must be at least twice the volume of the sampling system of the stationary sampler.

2.12.2. From vertical, horizontal, trench-type tanks, tanks of liquid ships, railway and road tanks, underground mine-type storage facilities, ice-soil storage facilities, a sample of oil or petroleum product is taken with a portable sampler as follows:

measure the level of oil or petroleum product;

calculate spot sampling levels;

lower the closed sampler to a given level so that the hole through which it is filled is located at this level;

open the cap or stopper, fill the sampler and lift it.

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

the sampler (see Figure 5) is lowered to the bottom of the tank or vehicle. When it touches the bottom, the rod rises, and oil or petroleum product begins to flow into the resulting gap. The sampler is kept in this position until it is filled with the sample, lifted and poured into the sample receiver.

2.12.4. A sample of the oil product is taken from the siphon valve using a portable sampler (see Figure 3).

2.12.5. When measuring the temperature and density of oil or petroleum product, the sampler is kept at a given level for at least 5 minutes before it begins to be filled.

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

2.12.6. The bottle with a selected sample of an easily evaporating petroleum 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 combined sample, each point sample is mixed, the required volume is taken and poured into one vessel.

The pooled sample is compiled immediately after sampling.

2.13. Pipeline sampling

2.13.1. General requirements

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

Dispersant parameters are given in Appendix 3.

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

2.13.1.3. It is allowed to take a sample at a liquid speed at the entrance to the sampling device of at least half or no more than twice the average linear speed 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 across the cross section) of liquid on a vertical or horizontal section of the pipeline at a high linear speed of liquid movement, after a pump or mixing device.

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

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

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

2.13.1.7. On a vertical or horizontal section of a pipeline through which a uniform flow of oil or petroleum 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. In case of non-uniform 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 a 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 from 100 to 400 mm;

five - with a diameter over 400 mm.

(New edition, Amendment No. 1).

2.13.1.9. A sampling device, consisting of one sampling tube, is installed in accordance with clause 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 with a diameter 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 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 installed 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 petroleum products obtained by mixing on-line, the sampling device must be at a distance of at least 25 pipeline diameters downstream from the point of introduction of the last component to ensure mixing of all components and obtaining a sample from a homogeneous flow.

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

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. Do not pour a sample of easily evaporating oil or petroleum product from the sample collector. The sample collector is disconnected and replaced with another.

A sample of oil and petroleum products with a saturated vapor pressure of no 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 receiver with the appropriate label.

2.13.1.16. When connecting or disconnecting a sample collector or pouring a sample into a sample collector, the sample must not be contaminated.

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

2.13.2. Automatic pipeline sampling

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

The automatic sampler regulator must be sealed.

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

2.13.2.3. When taking samples of oil or petroleum products, an automatic sampler must also provide for manual sampling from the sampling circuit (Fig. 18). In the absence of movement along the sampling circuit, a sample is taken after draining the oil or petroleum product into another vessel in a volume equal to three times the volume of oil or petroleum product filling the entire sampling system up to the tap from which the sample is drained.

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

2.13.3.1. Only a spot sample is taken with a hand sampler.

2.13.3.2. Point samples are taken after equal volumes of oil or petroleum product pumping or at regular intervals.

2.13.3.3. With a pumping capacity of no more than 500 m 3 /h, point samples are taken every 500 m 3 . The combined sample is made by mixing point samples of equal volume.

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

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

2.13.3.6. A spot sample of easily evaporating oil or petroleum 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 valve, the necessary back pressure is created, the sample is smoothly filled, the valves on the sample receiver are closed, then the sampling valve is closed and the sample receiver is disconnected.

The sample receiver 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 petroleum product. Connect the tap or valve of the sample receiver to the sample drain tap 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 the pipeline are equal. Close the outlet valve as soon as oil or oil product begins to leave the outlet of the sample receiver, then sequentially close the inlet valve of the sample receiver and the sample drain valve 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 valve through the bottom valve. Open the valves on the sample receiver, then the sampling valve, and pass the sampled oil or oil product 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 and the sampling valve and disconnect the sample receiver.

When taking a sample of oil and petroleum products to determine the content of water and salts, sample receivers are used to accumulate the sample by displacing air.

A PGO type sampler in accordance with GOST 14921 is used as a sample receiver using brine or air. When the saturated vapor pressure of oil or petroleum product is not more than 67 kPa (500 mm Hg), it is allowed to use a bottle with two tubes in a stopper.

2.13.3.7. A sample of oil or petroleum product with a saturated vapor pressure of no more than 40 kPa (300 mm Hg) may be taken in an open vessel. Adjust the drain valve on the pipeline so that a continuous, uniform stream flows out of it, which is directed into the sample receiver through a tube reaching to its bottom.

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

2.13.4.1. A sample of oil or petroleum 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. Both types of sampling device must provide the oil flow necessary for the operation of the quality analyzer.

(New edition, Amendment No. 1).

2.13.4.2. When using a continuous quality analyzer, the quality indicators of oil or petroleum product are determined instantly by continuously pumping a sample through a sampling device.

When using a discrete quality analyzer, the quality indicators of oil or petroleum product are determined over a certain period of time.

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

(Changed edition, Amendment No. 1, amendment).

2.13.4.4. When selecting and installing a quality analyzer, collecting and analyzing a sample of oil or petroleum product, the following requirements must be met:

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

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

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

2.14.1. One spot sample of the petroleum product is taken from a unit of transport container.

A combined sample of packaged petroleum product is made up of a mixture of point samples selected in accordance with Table. 2.

table 2

Number of containers P	Number of spot samples T	Number of containers P	Number of spot samples T
From 1 to 3 inclusive.		From 1729 to 2197 inclusive.
		» 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 petroleum 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, jar, bottle are mixed for 5 minutes by thoroughly shaking or With using a special stirrer. The surface around stoppers, lids and bottoms should be cleaned before opening.

2.14.3. A sampling tube for taking a spot sample of a liquid petroleum 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. A combined sample of liquid petroleum product is prepared by mixing point samples in accordance with Table. 2.

2.14.4. A spot sample of a grease-like petroleum product is taken with a piston or screw-shaped probe, with a longitudinal cutout or straight without a cutout.

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

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

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

A probe with a longitudinal cut is lowered, screwed 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 cutout is immersed to the bottom of the container with molten bitumen, then removed and the sample is scraped off with a knife.

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

A combined sample of a grease-like petroleum product is made by mixing point samples without melting them.

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

A spot sample from a box or bag filled with tiles or pieces is taken in the form of one tile or one piece.

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

2.14.6. A spot sample of the petroleum product in the molten state in barrels is taken and a combined sample is compiled according to clause 2.14.3 or 2.14.5.

2.14.7. A spot sample of a powdered petroleum product is taken from a bag, package or container with a probe (Fig. 13), immersing it over the entire thickness of the petroleum product.

The pooled sample is made by mixing point samples.

2.15. Sampling of unpackaged petroleum products

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

2.15.2. Spot samples of unshaped solid fusible petroleum product are taken from each ton with a shovel in the form of a piece, but not less than 10 pieces per batch.

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

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

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

Table 3

The combined sample of solid infusible petroleum product is crushed into 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 shape 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 5-10 mm in size and mixed. By repeated quartering and mixing, the mass of the combined sample is brought to 2-3 kg.

3. SAFETY REQUIREMENTS

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

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

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

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

3.5. When taking samples, the sampler should stand with his back to the wind to prevent inhalation of oil or petroleum product vapors.

3.6. The sampler must take samples in wells, pits and other recesses using a hose self-priming gas mask ISH-13 in accordance with GOST 12.4.034.

3.7. The sampler must take samples of oil or oil products in gas-hazardous places, as well as sulfur-hydrogen-containing oils and oil products in a filter gas mask FU-13 grades A, B, G, KD and others in accordance with GOST 12.4.034.

3.8. Explosion-proof lamps must be installed at sampling sites. When taking samples in unlit areas, use portable explosion-proof lamps. Portable lamps are turned on and off behind an earthen rampart or tank farm fence.

3.9. Sampling is carried out in special clothing and shoes made of 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 secure the portable sampler. When using cords (ropes, etc.) made of non-electrically conductive materials, a stranded, non-sparking, non-insulated metal conductor connected to the sampler must be attached to 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 petroleum product from the tank should be taken no earlier than 2 hours after completion of filling.

It is allowed to take a sample from the tank of a sea tanker 30 minutes after the tank has been filled.

It is allowed to take a sample from a railway tank 10 minutes after filling.

3.13. The sampler must take leaded gasoline samples in gloves made of water-resistant impregnated material or oil- and petrol-resistant material in accordance with GOST 12.4.010, in leather boots and in protective clothing in accordance with GOST 12.4.111 and GOST 12.4.112.

3.14. A sample of molten bitumen is taken using gloves in accordance with GOST 12.4.010 and safety glasses in accordance with GOST 12.4.013.

3.15. A sample of solid infusible petroleum product is taken and crushed in dust respirators of the RP-K, F-62Sh and U-2k brands and gloves in accordance with GOST 12.4.010.

Sample grinding areas must be equipped with local ventilation.

4. PACKAGING, LABELING AND STORAGE OF SAMPLES

4.1. Before packaging, the oil or petroleum product sample is mixed.

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

A sample of the ointment-like petroleum product is placed in a clean, dry glass, tin or polyethylene jar.

A sample of a solid petroleum product is packaged in cellophane, plastic film, thick paper to ensure the safety of the sample, or placed in a bucket with a paper bag.

4.2. The combined sample of oil or petroleum 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 petroleum product.

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

For oil or petroleum products intended for export and shipped in railway tanks or through a petroleum product pipeline, the combined sample is divided into three parts. One part is analyzed, the rest is stored in case of disagreement in quality assessment.

When loading oil or petroleum products for export by sea vessels, the combined sample is divided into five parts. One part is analyzed, two parts are stored in case of disagreement in quality assessment. The two remaining 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. Bottles with samples must be hermetically sealed with stoppers or screw caps with gaskets that do not dissolve in oil or petroleum products, and the jars must be tightly closed with lids. The neck of a sealed bottle or jar is wrapped in plastic wrap or other dense material that ensures the safety of the sample, and tied with twine, the ends of which are threaded through the hole in the label. The ends of the string are sealed or sealed with sealing wax on a plate of thick cardboard or wood and sealed. It is allowed to stick the label to a bottle, jar, or bag.

4.4. The label must indicate:

sample number according to the log book;

name of oil or brand of oil product;

name of the supplier;

tank number and filling height;

number of the batch, unit of transport container, tank;

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

date, time of selection;

sample storage period;

standard designation or technical specifications for oil or oil products;

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

4.5. Samples of oil or petroleum products are stored in a room that meets fire safety requirements for storerooms of flammable and combustible liquids. Samples of oil or petroleum products 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 fireproof material.

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

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

4.8. In case of disagreement in quality assessment, oil samples are stored for no more than 25 days when transporting via an oil pipeline, and for no more than 45 days when transported by other modes of transport.

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

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

When shipping oil and petroleum products to CMEA member countries, as well as to the DPRK and the People's Republic of China, samples are stored for 6 months.

ANNEX 1

Mandatory

TYPES OF SAMPLERS

Stationary sampler with perforated sampling tube

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

Stationary sampler for sampling

spot samples from three levels

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

1 - frame; 2 - lid

Metal portable sampler

1 - housing with inlet pipe; 2 - cover with fitting

Metal portable sampler

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

Bottle in a metal frame

1 - bottle; 2 - metal carcass; 3 - cork; 4 - lock

Thermostatic sampler

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

Sampling tube

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

Probe with longitudinal cutout

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

Straight probe without cutout

Probe for sampling powdered petroleum products

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

Layout of the sampling device in the form of one tube

Layout of sampling device tubes

along the pipeline cross section

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

Slot-type sampling device with one hole

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

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

(Introduced additionally, Amendment No. 1).

Slot type sampling device with five holes

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

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

(Introduced additionally, Amendment No. 1).

Pressure equalized sampler

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

Scheme of sampling from a pipeline using

pressure equalized sampler

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

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

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

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

Scheme for sampling oil and petroleum products from pipelines

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

(Introduced additionally, Amendment No. 1).

Dispersant

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

Note. Dispersant parameters are specified in Appendix 3

(Introduced additionally, Amendment No. 1).

Note. Options x k and y k stabilizer are determined according to the algorithm given in Appendix 4

APPENDIX 2

Mandatory

PARAMETERS OF SLOT-TYPE SAMPLING TUBES

Table 1 - Sampling tube with one hole (Fig. 15a)

Dimensions in millimeters

h j at the inner diameter of the sampling tube D 1

Nominal diameter D y of the pipeline

Notes:

1. Permissible deviation of the width of 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. The areas where the upper and lower boundaries of the slot opening meet the side boundaries can be made along a line with a radius of curvature of 0.2 - 1.0 times the width of the areas where the said boundaries meet.

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

Dimensions in millimeters

Hole No. (Fig. 15b)

h j For the inner 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. The gap between the lower sampling point and the lower generatrix of the pipeline is allowed to be no more than 5 mm.

3. The areas where the upper and lower boundaries of the slot holes meet the side boundaries can be made along a line with a radius of curvature of 0.2 - 1.0 times the width of the areas where the said boundaries meet.

(Introduced additionally, Amendment No. 1).

APPENDIX 3

Mandatory

Dispersant parameters (Fig. 19)

Dimensions in millimeters

(d 3 - d 2)

(L 1: L 3 )

Notes:

1. Allowed:

b= 13 mm with a nominal pressure in the bypass line of no more than 1.6 MPa;

b= 17 mm with a nominal pressure in the bypass line of no more than 4.0 MPa.

2. If the diameter of the bypass line is less than 40 mm, to install the dispersant on the bypass line, adapters with a diameter equal to d 1 .

(Introduced additionally, Amendment No. 1).

APPENDIX 4

Mandatory

CALCULATION OF PARAMETERS OF THE STABILIZER OF A SLOT SAMPLING DEVICE

Surface WITH stabilizer (Fig. 20) is performed at points, the projection of which onto the O xy plane is a parabola of the second degree with the parameters X to and at To (k = 1, . . . , 11), mm, determined by the formulas:

D which is equal to or greater than 350 mm:

(1)

Where D 1 - internal diameter of the sampling tube, 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, the sampling tube is selected depending on the diameter D near the pipeline (Appendix 2, Table 1-2).

2. Stabilizer height (coinciding with the value at m) may differ from the calculated value by no more than 3 mm.

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

Because the D at > 350 mm, to determine the parameters x k and y k we use formulas (1). The calculation results are summarized in table. 1.

Table 1

Because the D< 350 mm, for determining parameters x k And y k we use formulas (2). The calculation results are summarized in table. 2.

table 2

(Introduced additionally, Amendment No. 1).

INFORMATION DATA

1. APPROVED AND ENTERED INTO EFFECT by Resolution of the USSR State Committee on Standards dated December 28, 1985 No. 4453

2. INSTEAD GOST 2517-80

3. REFERENCE REGULATIVE 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 petroleum products. Sampling methods"
(approved and put into effect by Decree of the USSR State Standard of December 28, 1985 N 4453)

Crude oil petroleum products. Methods of sampling

Date of introduction 01/01/87

Instead of GOST 2517-80

This standard establishes methods for sampling oil and petroleum products from tanks, underground storage facilities, oil tankers, railway and road tanks, pipelines, barrels, cans and other means of storage and transportation.

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

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

1. Equipment

1.1. To take samples of oil and petroleum products, the samplers specified in table are used. 1 and .

Table 1

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

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

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

│Petroleum products with│Storage tanks│Stationary and│

│pressure of saturated│petroleum products with│portable │

│vapors 100 kPa (750 mm│high pressure│samplers, │

│Hg) and higher│saturated vapors,│allowing│

│GOST 1756 │oil tankers,│hermetic sampling│

│ │railway and│and providing│

│ │car tanks │quality preservation│

│ │ │samples │

│ │ │PGO type samplers│

│ │ │according to GOST 14921 and others│

│ │ │sampling vessels│

│ │ │under pressure │

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

│Oil and petroleum products│Vertical tanks│Stationary │

│with saturated pressure│cylindrical, │samplers: │

│vapors below 100 kPa│rectangular │reduced portion size with│

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

│GOST 1756 │height) │GOST 13196; │

│ │ │with perforated│

│ │ │sampling tube│

│ │ │for selecting point ones│

│ │ │trials from three levels│

│ │ │faucets on various│

│ │ │height levels│

│ │ │tank walls│

│ │ │(only for oil). │

│ │ │Portable │

│ │ │samplers: │

│ │ │metal │

│ │ │bottle in metal│

│ │ │thermostatic │

│Oil and petroleum products│Underground storage facilities in│Sampling taps,│

│with pressure saturated│stone deposits│installed on│

│below 100 kPa (750 mm│salt, constructed│product pipeline in│

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

│ │ │storage │

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

│ │Underground storage│Portable │

│ │shaft type,│samplers (see│

│ │temperature; │Portable │

│ │ice-soil storage facilities │samplers, │

│ │railway and│sampling from│

│ │automotive tanks,│vertical │

│ │trench│cylindrical and│ tanks

│ │type and horizontal│rectangular │

│ │cylindrical │reservoirs │

│Oil and petroleum products│Pipelines │Automatic or│

│with saturated pressure│ │manual samplers│

│vapors below 100 kPa│ │for sampling from│

│(750 mmHg) along│ │pipeline │

│GOST 1756 │ │ │

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

│ │Rubber-fabric │Glass and│

│ │reservoirs │metal tubes,│

│ │ │durite hoses│

│ │ │with a diameter of 9-12 mm │

│Mass-shaped │Barrels, cans, drums,│Probes: screw-shaped│

│petroleum products │cans, etc. │(), with longitudinal│

│ │ │straight probe without cutout│

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

│non-fusible │cars for oil bitumen │chisels, chisels, splitting axes,│

│petroleum products │ │axes │

│Powdery │Bags, packages,│Dipstick () │

│petroleum products │containers │ │

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

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

1.3. The mass of the portable sampler must be sufficient to ensure that it is immersed in oil or oil product.

1.4. The sampler is inspected before each sample collection. There should be no cracks on it. Plugs, caps, and gaskets must not have any defects that would impair the tightness of the sampler.

Portable samplers, sample collectors, sample receivers, tubes, probes, etc. before taking samples of oil or petroleum products must be clean and dry.

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

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

sampling device (see);

locking device;

sample collector (sample receiver).

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

1.5.1. The sampling device must be designed to be strong enough to withstand bending moments caused by maximum pipeline flow rates, withstand vibration, and create minimal disturbance to pipeline flow.

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 – with a kinematic viscosity of oil up to 15 mm2/s (15 cSt) at a temperature of 20°C;

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 shut-off device, automatic and manual samplers are used.

The shut-off device is a valve that serves to bypass the sample through the sampling device into the sample collector and is manually actuated.

1.5.4. Pressure vessels (closed) and atmospheric vessels (open) are used as a sample collector designed to accumulate a combined sample during automatic sampling, depending on the type of oil or petroleum 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 samples by displacing the aqueous saturated solution of sodium chloride (brine) filling them;

3 – with accumulation of the sample by displacing the remaining air in them.

1.5.4.2. Pressure vessels of types 1 and 2 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 transporting and storing samples. Requirements for sample collectors must comply with those specified in.

All connections and connecting pipes must be sealed.

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 sampler shut-off device must be actuated by electric, electromagnetic or pneumatic actuators.

1.6.2. To obtain a given sample at certain intervals, the automatic sampler circuit uses a regulator that comes into operation simultaneously with the start of pumping.

The sampling scheme using such a sample collector is shown on.

The connection and disconnection of the sample collector to the sampling system must be sealed.

2. Sampling methods

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

2.2. Tank Sampling

2.2.1. Before taking a sample from the tank, oil and petroleum products are allowed to settle for at least 2 hours and water sediment and contaminants are removed.

To check the removal of water and contaminants, at the request of the customer’s representative, a sample is taken from the siphon valve set to the lower position.

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

2.2.3. A sample of oil or petroleum product from a tank with a pontoon or 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 petroleum products in one go, stationary samplers are used in accordance with GOST 13196 or with a perforated sampling tube (see).

2.3.2. Point samples of oil or petroleum 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 cut of the receiving and distributing pipe (firecracker) along the internal diameter, for oil products - 250 mm above the bottom of the tank.

For a tank in which the inlet-dispenser pipe is located in the receiving area, the lower oil sampling level is taken to be the level at a distance of 250 mm from the bottom of the tank.

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

2.3.3. When checking the homogeneity of the petroleum product, spot samples from the tank in which the petroleum product is compounded are taken and analyzed separately.

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 product column, while spot samples of the upper and lower levels are taken at . The surface of the oil product is taken as the starting point for the first 1000 mm.

2.3.4. Spot samples when the level of oil or petroleum product in the tank is not higher than 2000 mm (or the remainder after emptying) are taken from the upper and lower levels along.

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

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

2.4. Sampling from horizontal tanks

2.4.1. Point samples of oil or petroleum 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 petroleum product;

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

lower - 250 mm above the lower internal generatrix of the tank.

The combined sample is made 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 petroleum 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 petroleum products of 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 petroleum product (counted from below).

The combined sample is made by mixing point samples of equal volume.

2.6. Sampling from rubber-fabric tanks

A spot sample of an 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 mine-type storage facilities constructed in rocks with positive and negative temperatures

A combined sample from an underground storage facility with several vertical shafts is made by mixing equal-volume combined samples from each shaft.

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

2.9. Sampling from ice-soil storage facilities

2.9.1. Selection of point samples and compilation of a combined sample of petroleum product from an ice-soil storage facility is carried out in accordance with or depending on the geometric shape of the storage facility.

2.10. Sampling from tankers

2.10.1. Point samples from the tank of a tanker with an oil or petroleum 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 petroleum product;

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

The combined sample is made 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 petroleum product level height of 3000 mm or less are taken from two levels:

middle - from the middle of the height of the column of oil or petroleum 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 a ship is loaded with one type of oil or one brand of oil product, a 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 end of loading.

A pooled sample for a vessel is prepared by mixing pooled samples from individual tanks in proportion to the volume of product in each of those tanks.

2.10.4. If a tanker is loaded with oil of different types or petroleum products of different brands, combined samples are compiled for each group of tanks with a separate type of oil or a separate brand of petroleum product in the same way as compiling a combined sample for a ship in accordance with.

2.10.5. A combined sample for a ship or group of tanks with oil or petroleum products intended for export, long-term storage or a customer's representative is compiled from the combined samples of each tank in accordance with.

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

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

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

2.11.2. Spot 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 compiled by mixing point samples in proportion to the volumes of oil or petroleum product in the tanks from which the samples were taken.

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

A combined sample for tanks sent to one destination is made by mixing point samples in proportion to the volume of product in the tanks.

2.11.5. From the petroleum bitumen car, one point sample is taken from the surface of the bitumen of any bunker.

A combined sample for several cars is made by mixing point samples of equal volume from each car.

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

measure the level of oil or petroleum product;

calculate spot sampling levels;

lower the closed sampler to a given level so that the hole through which it is filled is located at this level;

open the cap or stopper, fill the sampler and lift it.

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 petroleum product, the sampler is kept at a given level for at least 5 minutes before it begins to be filled.

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

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

The pooled sample is compiled immediately after sampling.

2.13. Pipeline sampling

2.13.1. General requirements

2.13.1.1. A sample of oil or petroleum product is taken from the pipeline using a stationary sampler. The sampling diagram from the pipeline is shown in and. Dispersant parameters () are given in.

(Changed edition, Amendment No. 1).

2.13.1.3. It is allowed to take a sample at a liquid speed at the entrance to the sampling device of at least half or no more than twice the average linear speed of the liquid in the pipeline.

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

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

2.13.1.8. In case of non-uniform 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 a 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 from 100 to 400 mm;

five – with a diameter over 400 mm.

(Changed edition, Amendment No. 1).

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

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

one tube with diameter d_1 – on the axis of the pipeline;

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

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 installed 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.

2.13.1.14. 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. Do not pour a sample of easily evaporating oil or petroleum product from the sample collector. The sample collector is disconnected and replaced with another.

A sample of oil and petroleum products with a saturated vapor pressure of no more than 40 kPa (300 mmHg), after thorough mixing in a tightly closed sample container, can be poured from the sample container into a sample receiver with the appropriate label.

2.13.1.16. When connecting or disconnecting a sample collector or pouring a sample into a sample collector, the sample must not be contaminated.

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

(Introduced additionally, Amendment No. 1).

2.13.2. Automatic pipeline sampling

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

The automatic sampler regulator must be sealed.

2.13.2.3. When taking samples of oil or petroleum products, an automatic sampler must also provide for manual sampling from the sampling circuit (). In the absence of movement along the sampling circuit, a sample is taken after draining the oil or petroleum product into another vessel in a volume equal to three times the volume of oil or petroleum product filling the entire sampling system up to the tap from which the sample is drained.

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

2.13.3.1. Only a spot sample is taken with a hand sampler.

2.13.3.2. Point samples are taken after equal volumes of oil or petroleum product pumping or at regular intervals.

2.13.3.3. With a pumping capacity of no more than 500 m3/h, spot samples are taken every 500 m3. The combined sample is made by mixing point samples of equal volume.

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

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

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

When taking a sample of oil and petroleum products to determine the content of water and salts, sample receivers are used to accumulate the sample by displacing air.

A PGO type sampler in accordance with GOST 14921 is used as a sample receiver using brine or air. When the saturated vapor pressure of oil or petroleum product is not more than 67 kPa (500 mmHg), it is allowed to use a bottle with two tubes in a stopper.

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

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

(Changed edition, Amendment No. 1).

2.13.4.2. When using a continuous quality analyzer, the quality indicators of oil or petroleum product are determined instantly by continuously pumping a sample through a sampling device.

When using a discrete quality analyzer, the quality indicators of oil or petroleum product are determined over a certain period of time.

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

2.13.4.4. When selecting and installing a quality analyzer, collecting and analyzing a sample of oil or petroleum product, the following requirements must be met:

sampling of oil or petroleum products must comply with;

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

2.14.1. One spot sample of the petroleum product is taken from a unit of transport container.

A combined sample of packaged petroleum product is made up of a mixture of point samples selected 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 spot sample of a grease-like petroleum product is taken with a piston or screw-shaped probe, with a longitudinal cutout or straight without a cutout.

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

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

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

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

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

A combined sample of a grease-like petroleum product is made by mixing point samples without melting them.

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

A spot sample from a box or bag filled with tiles or pieces is taken in the form of one tile or one piece.

2.14.6. A spot sample of the petroleum product in the molten state in barrels is taken and a combined sample is compiled according to or.

2.14.7. A spot sample of a powdered petroleum product is taken from a bag, package or container with a probe (), immersing it over the entire thickness of the petroleum product.

The pooled sample is made by mixing point samples.

2.15. Sampling of unpackaged petroleum products

2.15.2. Spot samples of unshaped solid fusible petroleum product are taken from each ton with a shovel in the form of a piece, but not less than 10 pieces per batch.

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

Table 3

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

│Volume of bucket, scraper, │Ordinal number of bucket,│ Number of points │

│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. Safety requirements

3.1. When performing sampling work, safety and fire safety rules when handling oil and petroleum products must 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 must be made of a material that does not produce sparks upon impact (aluminum, bronze, brass, etc.).

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

3.5. When taking samples, the sampler should stand with his back to the wind to prevent inhalation of oil or petroleum product vapors.

3.6. The sampler must take samples in wells, pits and other recesses using a hose self-priming gas mask ISH-13 in accordance with GOST 12.4.034.

3.7. The sampler must take samples of oil or oil products in gas-hazardous places, as well as hydrogen sulfide-containing oils and oil products in a filter gas mask FU-13 grades A, B, G, KD and others in accordance with GOST 12.4.034.

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

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

It is allowed to take a sample from the tank of a sea tanker 30 minutes after the tank has been filled.

It is allowed to take a sample from a railway tank 10 minutes after filling.

3.14. A sample of molten bitumen is taken using gloves in accordance with GOST 12.4.010 and safety glasses in accordance with GOST 12.4.013.

3.15. A sample of solid infusible petroleum product is taken and crushed in dust respirators of the RP-K, F-62Sh and U-2k brands and gloves in accordance with GOST 12.4.010.

Sample grinding areas must be equipped with local ventilation.

4. Packaging, labeling and storage of samples

4.1. Before packaging, the oil or petroleum product sample is mixed.

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

A sample of the ointment-like petroleum product is placed in a clean, dry glass, tin or polyethylene jar.

A sample of a solid petroleum product is packaged in cellophane, plastic film, thick paper to ensure 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 log book;

name of oil or brand of oil product;

name of the supplier;

tank number and filling height;

number of the batch, unit of transport container, tank;

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

date, time of selection;

sample storage period;

designation of the standard or technical specifications for oil or oil products;

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

4.5. Samples of oil or petroleum products are stored in a room that meets fire safety requirements for storerooms of flammable and combustible liquids. Samples of oil or petroleum products with standardized 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 fireproof material.

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

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

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

for oil – 3 months,

for petroleum products – 4 months.

When shipping oil and petroleum products to CMEA member countries, as well as to the DPRK and the People's Republic of China, samples are stored for 6 months.

_____________________________

* In the territory Russian Federation GOST R 12.4.195-99 is valid.

** GOST R 12.4.013-97 is in force on the territory of the Russian Federation.

Annex 1

Mandatory

Types of samplers

Stationary sampler with perforated sampling tube

"Crap. 1. Stationary sampler with perforated sampling tube"

Stationary sampler for collecting point samples from three levels

"Crap. 2. Stationary sampler for taking point samples from three levels"

"Crap. 3. Metal portable sampler"

Metal portable sampler

"Crap. 4. Metal portable sampler"

Metal portable sampler

"Crap. 5. Metal portable sampler"

Bottle in a metal frame

"Crap. 6. Bottle in a metal frame"

Thermostatic sampler

"Crap. 7. Thermostatic sampler"

Sampling tube

"Crap. 8. Sampling tube"

Helical feeler gauge

"Crap. 9. Screw-shaped probe"

Probe with longitudinal cutout

"Crap. 10. Probe with longitudinal cutout"

Piston dipstick

"Crap. 11. Piston dipstick"

Straight probe without cutout

"Crap. 12. Straight feeler gauge without cutout"

Probe for sampling powdered petroleum products

"Crap. 13. Probe for sampling powdered petroleum products"

Layout of the sampling device in the form of one tube

"Crap. 14. Layout of the sampling device in the form of one tube"

Layout of sampling device tubes along the pipeline cross-section

"Crap. 15. Layout of the tubes of the sampling device along the cross-section of the pipeline"

Slot-type sampling device with one hole

"Crap. 15a. Slot-type sampling device with one hole"

Note.

Slot type sampling device with five holes

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

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

Pressure equalized sampler

"Crap. 16. Equalized pressure sampler"

Diagram of sampling from a pipeline using a pressure-equalized sampler

"Crap. 17. Scheme of sampling from a pipeline using a pressure-equalized sampler"

Diagram of oil sampling from a pipeline using slot-type sampling devices

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

Scheme for sampling oil and petroleum products from pipelines

"Crap. 18b. Scheme for sampling oil and petroleum products from pipelines"

Dispersant

"Crap. 19. Dispersant"

Note. Dispersant parameters are indicated in.

Stabilizer

"Crap. 20. Stabilizer"

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

2. The height of the stabilizer (coinciding with the value 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, to determine the parameters x_k and y_k we use the formulas. The calculation results are summarized in table. 1.

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 │

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

Since 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 │

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

Date of introduction01.01.87

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

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

1. Equipment

1.1. To take samples of oil and petroleum products, the samplers specified in table are used. 1 and application.

Table 1

Characteristics of oil or petroleum product	Storage, vehicle, container	Sampling equipment and tools
Petroleum products with a saturated vapor pressure of 100 kPa (750 mm Hg) and higher GOST 1756	Tanks for storing petroleum products with high saturated vapor pressure, oil tankers, railway and road tanks	Stationary and portable samplers allowing for hermetically sealed sampling and ensuring the preservation of sample quality Samplers type PGO according to GOST 14921 and other pressure sampling vessels
GOST 1756	Vertical cylindrical, rectangular tanks (constant cross-section in height)	Stationary samplers: reduced portion with valves GOST 13196-93; with a perforated intake pipe (Fig. 1 ); for taking point samples from three levels (Fig. 2 ); taps at different levels along the height of the tank wall (oil only). Portable samplers: metal (drawing) 3 -5 ); bottle in a metal frame (Fig. 6 ); thermostatic (Fig. 7 )
Oil and petroleum products with a 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 an underground storage facility
	Underground mine-type storage facilities constructed in rocks with positive and negative temperatures; ice-soil storage facilities	Portable samplers (see drawing) 3 ) and a bottle in a metal frame (see drawing. 6 )
	Oil tankers, railway and road tanks, trench type 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 taking samples from pipelines
	Barrels, cans, bottles, cans	Sampling tubes (Fig. 8 )
Liquid petroleum products	Rubber fabric tanks	Glass and metal tubes, durite hoses with a diameter of 9 - 12 mm
Pasty petroleum products	Barrels, cans, drums, cans, etc.	Probes: screw-shaped (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	Dipstick (damn. 13 )

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

1.3. The mass of the portable sampler must be sufficient to ensure that it is immersed in oil or oil product.

1.4. The sampler is inspected before each sample collection. There should be no cracks on it. Plugs, caps, and gaskets must not have any defects that would impair the tightness of the sampler.

Portable samplers, sample collectors, sample receivers, tubes, probes, etc. before taking samples of oil or petroleum products must be clean and dry.

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

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

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

The 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 - 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 shut-off device, automatic and manual samplers are used.

The shut-off device is a valve that serves to bypass the sample through the sampling device into the sample collector and is manually actuated.

1.5.4.1. Three types of pressure vessels are used:

1 - with equalized pressure (Fig. 16 );

2 - with the accumulation of samples by displacing the aqueous saturated solution of sodium chloride (brine) filling them;

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

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

All connections and connecting pipes must be sealed.

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 sampler shut-off device must be actuated by electric, electromagnetic or pneumatic actuators.

1.6.2. To obtain a given sample at certain intervals, the automatic sampler circuit uses a regulator that comes into operation simultaneously with the start of pumping.

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

The connection and disconnection of the sample collector to the sampling system must be sealed.