AGREED with the Ministry of Chemical Industry on December 21, 1979.

AGREED with the Ministry of Petroleum Refining and Petrochemical Industry on December 27, 1979.

APPROVED by the Ministry of Gas Industry on December 28, 1979.


The instruction establishes the basic provisions and procedure for loading, unloading and transporting liquefied hydrocarbon gases in special railway tank cars, and also defines the requirements for their technical maintenance and inspection and contains a description of the design of the tank.

Designed for engineering and technical workers and specialists of oil and gas refineries, petrochemical and chemical plants, synthetic rubber plants, gas distribution stations and cluster bases liquefied gas, commodity and transport points and liquefied gas offices, gas facilities, railway transport, as well as for specialists from organizations designing structures and devices for loading and unloading liquefied hydrocarbon gases.

With the entry into force of this instruction, the “Instructions for loading, unloading and transportation of liquefied hydrocarbon gases (propane, butane, propylene, butylene and their mixtures) in railway tanks”, approved by the former. Gazprom of the USSR on November 23, 1964.

I. GENERAL PROVISIONS

I. GENERAL PROVISIONS

§ 1. This Instruction developed by the production association "Tsentrgaz" of the Ministry of Gas Industry in accordance with the "Rules for the design and safe operation vessels operating under pressure"*, "Safety Rules in the Gas Industry"**, "Charter of Railways of the USSR", "Rules technical operation Railways of the USSR", "Rules for Cargo Transportation" of the Ministry of Railways, "Safety Rules in the Oil and Gas Industry" and "Safety Rules for the Operation of Gas Processing Plants".
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* The “Rules for the design and safe operation of pressure vessels” are in effect, approved by Decree of the State Gortechnadzor of Russia dated June 11, 2003 N 91, hereinafter in the text.
** The “Safety Rules in the Gas Industry” are in effect (PB 12-368-00), approved by Resolution of the Gosgortekhnadzor of Russia dated May 26, 2000 N 27, hereinafter in the text. - Note "CODE"

§ 2. The instruction establishes the basic provisions and procedure for loading, unloading and transporting liquefied hydrocarbon gases in special railway tank cars*, and also defines the requirements for their maintenance and technical examination and contains a description of the design of the tank.
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* Further in the text, instead of “liquefied hydrocarbon gases”, “liquefied gases” is used, and instead of the term “special railway tank car”, “tank” is used.

§ 3. The instructions are mandatory for all enterprises and organizations, regardless of their departmental affiliation, that carry out loading, unloading and transportation along the access roads of enterprises and the railway network liquefied gases in tanks that are the property of the Tsentrgaz production association.

§ 4. At each enterprise that performs loading, unloading and dispatching tanks, local job and operational instructions must be developed in accordance with the requirements of these Instructions to ensure the safety of these works.

§ 5. In tanks it is allowed to transport only hydrocarbon gases and liquids, and their mixtures: propane, n-butane, isobutane, propane-butane, propylene, unstable gas gasoline, isopentane, n-pentane, butylene-butadiene, isobutane-isobutylene, isobutylene , butadiene, butane-butylene, isoprene, n-butylene, isoamylene, reflux, pseudobutylene, piperylene, pyrolysis fraction of pentanes, wide fraction of hydrocarbons.

II. DESCRIPTION OF THE TANK CONSTRUCTION

§ 6. For the transportation of liquefied gases in the USSR, tanks with top loading and discharge are used (Fig. 1).

Fig.1. Railway tank car for transportation of liquefied hydrocarbon gases

Fig.1. Railway tank car for transportation of liquefied hydrocarbon gases.

1 - four-axle platform, 2 - vessel with spherical bottoms,
3 - safety cap, 4 - platform with handrails, 5 - tie clamps,
6 - ladders, 7 - pressure gauge holder assembly, 8 - mounting feet

The tank is a welded cylindrical vessel with spherical bottoms 2, located on a four-axial platform 1. In the upper part of the tank there is vertical axis symmetry there is a manhole with an internal diameter of 450 mm. The manhole cover is made in the form of a flat flange on which draining and loading and safety fittings and fittings for controlling draining and loading operations are located.

The hatch, together with the fittings, is closed with a safety cap 3 with a diameter of 685 mm, a height of 426 mm with a hole for releasing gas in case the safety valve is activated.

To service the fittings during draining and filling and to check their condition, a platform with handrails 4 and ladders 6 on both sides of the tank is reinforced on the tank. The tank vessel is attached to the frame of the railway platform with tie clamps 5 and to the center beam with paws 8. The platform is equipped with an automatic coupler, a parking brake and an automatic brake with a lever transmission.

§ 7. A spring safety valve 7 (Fig. 2) is mounted in the center of the hatch cover, designed to release liquefied gas vapor into the atmosphere at a pressure in the tank exceeding the operating pressure by more than 15%.

Rice. 2. Location of fittings on the hatch cover of a railway tank

Rice. 2. Location of fittings on the hatch cover of a railway tank.

1 and 10 - valves for emptying control, 2 and 3 - valves for filling level control,
4 and 9 - corner valves for filling and draining liquefied gas, 5 - pocket for a thermometer,
6 - angle valve for selecting and supplying the vapor phase of liquefied gas,
7 - safety valve, 8 - drain valve

§ 8. On both sides of the safety valve along the longitudinal axis of the tank there are two corner drain and fill valves 4 and 9 (see Fig. 2), which are connected to the drain and fill pipes through high-speed valves 1 (Fig. 3).

Fig.3. Layout of drain, fill and equalization valves on the hatch cover of a railway tank

Fig.3. Layout of drain, fill and equalization valves on the hatch cover of a railway tank.

1 - high-speed valves, 2 and 4 - drain and fill corner valves, 3 - corner equalizing valve,
5 - manhole cover, 6 - manhole pipe, 7 - pipe for extracting and supplying liquefied gas vapors,
8 - drain and fill pipes, 9 - tank vessel tray, 10 - drainage pipe, 11 - thermometer pocket

To extract liquefied gas vapor from the tank and supply it with an angle equalizing valve 6 (see Fig. 2), connected through a high-speed valve to the vapor space of the tank vessel. The drain, fill and equalization valves are equipped with plugs that have a safety hole in the thread, through which, in the event of a malfunction of the valve, liquefied gas escapes when the plug is unscrewed; The side fittings of the valves have a left-hand thread.

§ 9. To control the filling level of the tank with liquefied gases, valves 2 and 3 are used (see Fig. 2). Valve tube 2, the flywheel of which is painted green, ends at the top filling level of the tank, and valve tube 3, the flywheel of which is painted red, ends at the maximum filling level, i.e. 30 mm higher (Fig. 4).

Rice. 4. Layout of valves for controlling the level of filling and draining of liquefied gas in a railway tank

Rice. 4. Layout of valves for filling level control
and discharge of liquefied gas in a railway tank.

1 - fill level limit valve with a red flywheel,
2 - top fill level control valve with green flywheel,
3 - gas valve for emptying the drain control valve tube,
4 - drain control valve, 5 - drain valve, 6 - manhole cover,
7 - hatch pipe, 8 - maximum liquefied gas filling level,
9 - lower drain level, 10 - bottom of the tank vessel

The tank drain is controlled by valve 10 (see Fig. 2), the tube of which ends at the level of the lower plane of the drain and fill pipes. Valve 1 is designed to balance the liquid column in valve tube 10 with the liquid level in the tank container (see Fig. 2).

Valve 8 (see Fig. 2) serves to remove water and heavy non-evaporating residues of liquefied gases from the tank vessel. The end of the tube of this valve ends at a distance of 5 mm from the bottom of the tank vessel pan.

The fill and drain level control valves and the drain valve are equipped with plugs.

§ 10. To automatically shut off the drain, fill and equalization lines of the tank in the event of a rupture of the connecting hoses, high-speed valves 1 are installed on the drain, fill and equalization pipes (see Fig. 3).

§ 11. The thermometer for measuring the temperature of liquefied gases is placed in pocket 5 (see Fig. 2) 2796 mm long, the upper end of which is plugged with a stopper.

In the upper part of the tank along the longitudinal axis, a pressure gauge holder assembly 7 is installed (see Fig. 1) at a distance of 1170 mm from the vertical axis of symmetry. The pressure gauge holder consists of a fitting welded into the vessel body, a nipple, a needle valve, a coupling and a plug. The pressure gauge holder is closed with a cap.

§ 12. Technical specifications railway tank car.

Note. In tanks with a capacity of 54 m3, manufactured before 1980, the top filling level (valve with green flywheel) corresponds to a filling volume of 43.87 m3; in tanks with a capacity of 51 m - 41.66 m.

III. REGISTRATION AND TECHNICAL INSPECTION; REQUIREMENTS FOR TANK PAINTING

1. Registration and technical examination

§ 13. The tank vessel must be manufactured in full compliance with, and the chassis - with the "Rules for the technical operation of railways of the USSR" and the technical conditions of the Ministry of Railways. For each tank, the manufacturer issues two passports: one for the vessel, the other for the chassis. Both passports must be kept as strictly controlled documents.

§ 14. Before putting into operation, the tank must be registered with the local authorities of Gosgortekhnadzor in accordance with sections 6-2 and 9-2.

§ 15. On the registration of a tank vessel, the USSR State Mining and Technical Supervision Authority makes notes in the passport (assigns registration number and puts a stamp) and returns it with all the laced documents to the owner of the tank.

The owner of the tank puts the registration number on the vessel and presents it to the inspector of Gosgortekhnadzor to obtain permission to put it into operation.

The permission to put the tank into operation, indicating the timing of the next internal inspection and hydraulic test, is recorded by the Gosgortekhnadzor inspector in the vessel's passport.

When a tank is transferred to another owner, the vessel is again subject to registration before it is put into operation at a new location.

§ 16. Inspection of the tank vessel must be carried out by a boiler inspection inspector at tank manufacturing plants, car repair plants of the Ministry of Railways and at repair and testing points of the Tsentrgaz association.

The tank vessel must be subjected to internal inspection and hydraulic testing after each major overhaul, but not less than every six years, and also in the case when the tank has not been in operation for more than one year or repairs have been carried out using welding of individual parts of the vessel operating under pressure.

The inspection results are recorded by the boiler inspection inspector in the tank vessel passport.

§ 17. The tank must undergo factory repair at the car repair plants of the Ministry of Railways after 15 years and depot repair of the running parts at the road depot after 2 years.

§ 18. The manufacturer stamps the following passport data on the tank vessel around the circumference of the hatch flange:

a) name of the tank manufacturer;

b) serial number of the tank;

c) year of manufacture and date of inspection;

d) capacity in m;

e) weight of the tank when empty without running gear in tons;

f) the value of the working and test excess pressure in at;

g) stamp of the quality control department of the manufacturer.

§ 19. A metal plate with rating data is attached to the tank frame (the channel of the pivot beam):

a) name of the manufacturer;

b) serial number;

c) year of manufacture;

d) mass of the tank with running gear when empty, in tons;

e) registration number of the tank (knocked out by the owner of the tank after its registration with the local authorities of Gosgortekhnadzor);

f) date of the next survey.

§ 20. Drain and fill valves are subject to removal, inspection and hydraulic testing with an excess pressure of 25 atm by the enterprise that owns the tank at least once a year.

The safety valve and its spring are inspected and tested at least once a year. The safety valve must open completely at an excess pressure of 23 at. High-speed valves and the quality of connections between drain and fill pipes are checked at least once every 6 years.

After installing corner and control valves and a safety valve on the roof of the hatch, a report is drawn up based on the results of their testing. The report is attached to the tank vessel passport.

A metal plate with the date (month and year) of the preventive repairs performed is attached to the shut-off and safety valves.

2. Painting requirements

§ 21. The painting of the tank and the application of distinctive stripes and inscriptions are carried out by the manufacturer of the tanks, and during operation - by the enterprises that own the tanks and car repair plants of the Ministry of Railways in accordance with the "Rules for the design and safe operation of pressure vessels", "Rules for the transportation of goods" IPU and this Instruction.

§ 22. Painting the tank:

a) the outer surface of the tank vessel is painted light gray;

b) the bottom of the tank vessel along its entire length to a height of 300 mm is painted black;

c) the tank frame is painted green;

d) along the tank vessel on both sides above midline a distinctive red stripe 300 mm wide is applied along the entire length of the cylindrical part;

e) a distinctive green circle is applied to the bottoms at a distance of 300 mm from the edge.

§ 23. On the cylindrical part of the tank vessel, stencils are applied on both sides:

- above the distinctive strip in its middle part there is a red inscription: “Propane - liquefied gas - flammable”;

- on the left above the distinctive stripe is the tank car number, the color of the inscription is black;

- on the left, under the distinctive stripe, there is a black inscription: “Pressure 20 ati”, “Hydraulic use 25 ati”;

- on the right above the distinctive stripe there is a black inscription: “Capacity 54. m”, “Filling 45.2 m”;

Under the distinctive stripe in the middle part there is a red inscription: “Do not go down the hill.”

§ 24. On both bottoms of the tank vessel, in a green circle, starting from the top of the bottom, stencils with white inscriptions are applied:

a) “Don’t go down the hill”;

b) "Flammable";

d) "Property of PA "Tsentrgaz".

In addition, car repair plants and road depots apply stencils indicating the production of factory and depot repairs.

§ 25. On the hatch cover there is an inscription: “Ground the hoses.” The color of the inscription is red.

§ 26. Inscriptions and signs related directly to the chassis of the tank are applied in accordance with the requirements of the current rules and instructions of the Ministry of Railways by the tank manufacturer, car repair plants and road depots.

§ 27. Signs and inscriptions must be applied only using stencils. Gaps in letters and numbers left by stencils are painted over by hand. The spacing between letters and numbers is assumed to be equal to the width of the letters. Dashes, periods and commas should be taken equal to the width of the strip for a given font.

§ 28. Tank vessel valves must have a special color and inscriptions indicating their purpose:

a) drain and equalization valves are painted brown;

b) inscriptions are applied to the caps or letters are knocked out: for liquid valves - the inscription “Liquid” or the letter “G”, for a gas valve - the inscription “Gas” or the letter “G”;

c) the handwheel of the valve for controlling the level of the top filling of the tank vessel is painted green;

d) the handwheel of the valve for controlling the maximum filling level of the tank vessel is painted red;

e) the flywheels of the drain control valves are painted brown;

f) the drain valve is painted light gray.

§ 29. If signs, inscriptions or the surface of a tank car become dirty, the owner of the tank is obliged to restore the clarity of the signs and inscriptions.

1. General requirements

§ 30. Liquefied gas offices and commodity transport points of the Tsentrgaz association are required to maintain tanks in accordance with the requirements of the “Rules for the design and safe operation of pressure vessels”, “Rules for the transportation of liquid cargo in bulk in tank cars and bunker gondola cars” of the Ministry of Railways , "Rules for the technical operation of railways of the USSR" and this Instruction, ensuring the safety of service, good condition and reliability of their operation.

§ 31. Persons who supervise tanks in liquefied gas offices or commodity transport points of the Tsentrgaz association and are responsible for their good condition and safe operation must be appointed by order from among the engineering and technical workers who have passed the knowledge test of the "Rules for Construction and Safe Operation". operation of pressure vessels", , "Rules for the transportation of liquid cargo in bulk in tank cars and bunker gondola cars" of the Ministry of Railways and this Instruction.

§ 32. Maintenance of tanks can be entrusted to persons who have reached the age of 18 and have undergone industrial training, certification by a qualification commission and a medical examination.

Workers, in addition to training and certification, must undergo safety training when hired and when moving to another job directly at the workplace.

Before being allowed to work, each worker must be given, against signature, instructions according to his profession on the safe maintenance of tanks. In addition, the instructions must be posted at each workplace.

Conducting briefings is recorded on cards in the established form.

§ 33. Periodic testing of workers’ knowledge is carried out by a qualification commission appointed by order of the enterprise at least every 12 months.

The frequency of testing the knowledge of engineering and technical workers is once every three years.

The results of the inspection must be documented in a protocol on the basis of which certificates are issued.

Participation in the work of the qualification commission of a boiler inspection inspector is not mandatory.

§ 34. Persons applying for positions related to shunting work must also know:

a) “Rules for the technical operation of railways of the USSR”;

b) “Instructions for signaling on railways of the USSR”;

c) “Instructions for movement and shunting work on the railways of the USSR”;

d) "Charter on discipline of railway transport workers."

Subsequently, their knowledge of these documents is periodically checked.

§ 35. Officials at enterprises guilty of violating these Instructions bear personal responsibility, regardless of whether or not this violation led to an accident or accident. They are also responsible for violations of the Instructions committed by their subordinates.

2. Requirements for the safe operation of tanks

§ 36. Repairs to the tank vessel, its elements and internal inspection are permitted only after the vessel has been degassed.

The fittings can be removed for repair and testing only if there is no excess pressure in the tank vessel. After removing the fittings for repairs, the holes in the tank vessel hatch cover must be closed with plugs on the threads or plugs on the flanges.

§ 37. A tank sent for repair to the road depot and to the car repair plants of the Ministry of Railways must be degassed. A certificate of degassing of the tank vessel is attached to the transportation documents.

§ 38. During the route, repairs to the running parts, brakes and harnesses of empty and loaded tanks must be carried out by employees of the Ministry of Railways carriage facilities with extreme caution.

When repairing a faulty tank, it is prohibited:

- repair the vessel in a loaded state, as well as in an empty state before degassing;

- strike the vessel;

- use a tool that produces sparks and be with an open fire (torch, brazier, kerosene and candle lanterns, etc.) near the tank:

- carry out welding work under the tank.

If it is necessary to correct the carts using fire, welding and impacts, the carts must be rolled out from under the tank and moved away from it at a distance of no closer than 100 m.

§ 39. It is prohibited to keep the tank connected to communications when it is not being filled or drained. In case of a long break when draining or filling liquefied gas, the hoses from the tank must be disconnected.

§ 40. Tightening and unscrewing threaded and flanged connections of the tank and communications, hose clamps under excess pressure is prohibited. Do not use impact tools when screwing or unscrewing nuts.

§ 41. Smoking within a distance of less than 100 m from the tank is strictly prohibited. It is not permitted to carry out any extraneous work near the tank.

§ 42. All work on minor repairs elements of a non-degassed tank are made with non-sparking tools, and the working part of tools and devices made of ferrous metal must be generously lubricated with grease, grease or other lubricant. Use of electric drills and other electric tools that produce sparks, as well as welding work is prohibited.

§ 43. Work inside the tank vessel is gas hazardous and must be carried out in accordance with the requirements of Chapter 9 “Safety Rules in the Gas Industry”, production instructions, safety instructions and approved technological regulations. This work must be carried out under the direct supervision of an engineer and technical worker. During the process of carrying out repair work inside the tank, all orders regarding the procedure for carrying out the work must be given by the person responsible for the work. Other officials and managers present during the work must give instructions to the workers through the person responsible for the work.

Lighting inside the tank vessel is allowed only with light bulbs with a voltage of no more than 12 V in serviceable explosion-proof fittings.

Before starting work inside the tank vessel, it is necessary to analyze the environment for the absence of dangerous concentrations of hydrocarbons and for oxygen content. The oxygen content should be between 19-20% by volume.

§ 44. When not in operation, the tank valves must be closed and plugged. If necessary, replacing the stuffing box of the valves of a filled tank can be done with the valve completely closed and the plugs removed.

§ 45. During loading and unloading of liquefied gas, it is prohibited to carry out any hot work at a distance closer than 100 m from the tank.

On the side of the railway track, on access roads and roads in the loading or unloading area, signals measuring 400x500 mm with an inscription should be placed. “Stop, passage is prohibited, the tank is being filled (or drained”). In addition, access railway tracks must be fenced with signals in accordance with the “Signaling Instructions” of the Ministry of Railways.

§ 46. Drainage of water and non-evaporating residues and periodic monitoring of the filling or draining of the tank may only be carried out in the presence of a second person. In this case, you should be on the windward side and have the necessary personal protective equipment.

§ 47. In case of accidents that can lead to a significant leak of gas from the tank or connecting communications, it is necessary to immediately extinguish all sources of open fire, remove people from the area of ​​possible gas contamination, set up posts prohibiting the admission of people and vehicles into the gas-contaminated area, create where possibly a steam curtain, take measures to eliminate the leak. The accident must be reported to the administration of the supplier plant (manufacturer)* and the railway.
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* Supplier plant (manufacturer) - an enterprise that produces liquefied hydrocarbon gases and fills them into tanks.

If a fire occurs near the tank, you must immediately call the fire brigade, take measures to extinguish the fire and remove the tank to a safe place. If the tank cannot be removed, it must be watered. When liquefied gas catches fire, various fire extinguishing agents are used:

a) fire extinguishers - foam, carbon dioxide;

b) water in the form of compact and sprayed jets, water vapor, sand, asbestos sheet and other available fire extinguishing agents.

All enterprises must develop a plan to eliminate possible accidents.

§ 48. On electrified sections of railways, all types of work on top of the tank are prohibited until the voltage in the contact network is removed.

§ 49. Hazardous properties liquefied gases require special precautions. When working with liquefied gases, it is necessary to comply with the safety requirements set out in GOSTs and technical specifications.

Leaks of liquefied gas must be eliminated immediately, since inhalation of air containing 10% liquefied gas vapor by a person causes dizziness; with a higher vapor content, oxygen deficiency occurs.

When the liquid phase gets on human skin due to its instantaneous evaporation, intense heat absorption occurs, which leads to frostbite.

§ 50. If liquefied gas comes into contact with the skin, eyes, etc. It is necessary to quickly rinse the affected area with a copious stream of cold water, lubricate the affected area (before bubbles form) with burn ointment. If blisters are present, carefully apply a sterile dressing and seek immediate medical attention.

If liquid gets on clothing, it must be removed immediately, since the liquefied gas is instantly absorbed into it and penetrates the body, freezing it. It must be remembered that delay is very dangerous, since blisters form under clothing on the body, which can burst, and if more than the skin is affected by burns, death is possible.

V. LOADING, TRANSPORTATION AND DISCHARGING OF LIQUEFIED HYDROCARBON GASES

1. General Provisions

§ 51. Loading and draining of liquefied gases are gas-hazardous work and must be carried out in accordance with the requirements of Chapter 9 of the “Safety Rules in the Gas Industry”, “Safety Rules in the Oil and Gas Industry”, “Safety Rules for the Operation of Gas Processing Plants”, production instructions and instructions for safety precautions.

Loading and draining of liquefied gases is permitted only on a special overpass made of fireproof materials, commissioned in accordance with the established procedure with the participation of representatives of local bodies of the State Mining and Technical Supervision Authority. Rests must be equipped with explosion-proof lighting, ensuring that loading and unloading operations can be carried out around the clock.

§ 52. Unloading racks must have a track development corresponding to the volume of loading and unloading; supplying plants (manufacturers) must have receiving and departure tracks, storage tracks for tanks based on daily shipment, and a rack for inspecting and preparing tanks for loading.

The pipelines of the discharge and loading racks must be equipped with pressure gauges; there should be no shut-off devices between the installation site of the pressure gauges and the corner valves of the tank.

For draining and loading devices, rubber-fabric hoses of class B (I) should be used in accordance with GOST 18698-73.

Devices for connecting hoses to corner valves must ensure the safety of the threads of the fittings of the drain and fill valves (Appendix 8).

Pipelines and rubber-fabric hoses must be grounded.

§ 53. Before the start of loading and unloading operations, tanks must be secured to the rail track with special shoes and grounded.

Draining and loading operations during a thunderstorm are prohibited.

§ 54. Unlike most liquids, the volume of which changes slightly when the temperature changes, the liquid phase of liquefied gases changes quite sharply in volume; For example, the table shows data for four products.

Volume increase 1 mliquid phase located in a closed volume,
with increasing temperature, m

When checking before draining the presence of liquefied gas in the tank, the liquid phase may not come out of the top fill level control valve (green flywheel), since the volume of the liquid has decreased with a decrease in its temperature relative to the filling temperature.

2. Pouring

§ 55. In accordance with the “Rules for the Technical Operation of Railways of the USSR,” Ministry of Railways employees must conduct a technical inspection of tanks before delivering them to the access roads of the supplier (manufacturer) and, if necessary, repair the tanks. Order and volume technical inspection MPS is installed.

§ 56. Before filling with liquefied gas, tanks must be carefully inspected by employees of the liquefied gas office or the freight transport point of the Tsentrgaz association.

During a preliminary external inspection of tanks, carried out on the access roads of the supplying plant (manufacturer), the following must be checked: the timing of factory and depot repairs of running gears, internal inspection and hydraulic testing of tank vessels, preventive repairs of safety and shut-off valves, the condition of painting and stencils, and the chalk inscriptions were washed away. In addition, it is necessary to check that the tank vessel is not damaged (dents, cracks, etc.) and if it is damaged, request it from the railway technical act in the form VU-25 or VU-25a (Appendices 1, 2).

Based on the inspection, an application is submitted to the transport department of the supplier plant (manufacturer) to supply tanks recognized as suitable for loading under the overpass. For tanks filled for the first time or after repair, a note is made in the application.

Checking the serviceability and tightness of safety, drain-filling and control valves must be carried out by employees of the liquefied gas office or the commodity-transport point of the Tsentrgaz association at the inspection and preparation rack of tanks for filling or at the loading rack belonging to the supplier plant (manufacturer).

Note: The positions of responsible persons involved in the inspection and acceptance of tanks are established in accordance with the existing management structure and staffing of liquefied gas offices or commodity transport points and are specified by production instructions.

When shipping up to 3 thousand tons of liquefied gases per month, all operations for inspection before loading and sending tanks to the consumer are performed by employees of the supplier plant (manufacturer) by proxy of the Tsentrgaz association, and over 3 thousand tons - by employees of the liquefied gas or commodity office transport point of the association "Tsentrgaz".

§ 57. It is prohibited to fill tanks if:

a) the period for factory and depot repairs of chassis, preventive repairs of fittings, internal inspection and hydraulic testing of tank vessels has expired;

b) safety, shut-off and control valves are missing or faulty;

c) there are no established brands, inscriptions and stencils are unclear;

d) the cylindrical part of the vessel or bottom is damaged (cracks, dents, noticeable changes in shape, etc.);

e) painting is required;

f) tank vessels are filled with non-hydrocarbon liquefied gases and liquids;

g) residual excess vapor pressure of the product is less than 0.5 kgf/cm (for liquefied gases, the vapor pressure of which is winter time may be below 0.5 kgf/cm, the residual excess pressure is established by local production instructions), except for tanks filled for the first time or after repair.

§ 58. Before filling, tanks must be inspected by representatives of the liquefied gas office or the commodity-transport point of the Tsentrgaz association and the supplying plant (manufacturer).

At the same time, by opening the filling limit level control valve (the flywheel is painted red), it is necessary to check the presence of residual pressure in the tank, and by opening the drain valve, the presence of water or non-evaporating gas residues in the tank. All water or non-evaporating residues in the container must be removed by employees of the supplying plant (manufacturer) before filling the tank with the product. Tanks being filled for the first time or after repairs must be purged with inert gas by employees of the supplier (manufacturer) plant.

§ 59. The results of the inspection of tanks recognized as suitable for loading must be entered by employees of the office or commodity transport point of the Tsentrgaz association in special magazine inspection of tanks before filling, which must contain the following columns:

- number in order;

- tank car number;

- date of inspection of the tank;

- registration number of the tank vessel;

- the result of an external inspection of the tank;

- the result of an external inspection of the tank fittings;

- period for preventive repairs of tank fittings;

- compliance of the gas in the tank with its purpose;

- presence of residual pressure;

- period of depot repairs;

- period of factory repair;

- period of internal inspection and hydraulic testing;

- conclusion on the possibility of filling the tank being checked;

- signature of the responsible person of the office or commodity transport point of the Tsentrgaz association who inspected the tank;

- signature of the responsible person of the supplying plant (manufacturer) who accepted the tank.

§ 60. Before loading liquefied gases into tanks, the supplying plant (manufacturer) is obliged to remove the water released from the product (drainage) from the warehouse tank.

Finished products must be accepted by the technical control of the supplier (manufacturer), responsible for the quality of the product poured into the tanks.

§ 61. After accepting the tanks supplied under the overpass, workers of the supplier plant (manufacturer) must remove the plugs from corner valves 4, 9 and 6 (see Fig. 2) and connect the drain and fill valves (4 and 9) with the liquid pipelines phase, and valve 6 - with the steam phase pipeline of the rack.

Having completed the connection operations, it is necessary to open valves 4 and 9 and start filling the tanks, then slowly open valve 6 to equalize the pressure in the tank vessel and the container from which the filling is being carried out, and continue filling.

§ 62. If a product leak is detected when loading a tank, the filling must be stopped, the product is drained, the pressure is released, and employees of the liquefied gas office or the commodity transport point of the Tsentrgaz association must take measures to identify and eliminate the tank malfunction.

§ 63. During the filling process, it is necessary to constantly monitor the gas level in the tank vessel, opening from time to time the top filling level control valve with green flywheel 2 (see Fig. 2). Continue pouring until liquid appears from the valve.

§ 64. The loading time of the entire batch of tank cars of one shipment at the supplier plant (manufacturer) from the moment of their acceptance from the liquefied gas office or the freight transport point of the Tsentrgaz association should not exceed 6 hours.

§ 65. After the filling of the tank is completed, an employee of the liquefied gas office or the commodity transport point of the Tsentrgaz association receives it from the supplying plant (manufacturer).

When accepting filled tanks, it is necessary to check that they are filled correctly.

When filled correctly, gas (vapor phase of liquefied gas) should come out of the filling limit level control valve with red flywheel 3 (see Fig. 2), and liquid should come out of the top filling level control valve with green flywheel 2.

The appearance of liquid from valve 3 indicates that the tanks are overfilled, and the absence of liquid exiting valve 2 indicates that the tanks are underfilled.

§ 66. Part of the product must be drained from overfilled tanks, while controlling the filling level, valve 3 should be kept open for about 30 s to avoid obtaining distorted readings. In this case, the liquid retained in the tube from the previous measurement will be completely removed.

If the tank is detected to be underfilled, the supplier (manufacturer) is obliged to fill the tank to the top fill level (valve 2).

§ 67. The maximum degree of filling of tanks with liquefied gases must not exceed 85% of the volume of the tank vessel.

§ 68. After checking the correct filling of the tank vessel, employees of the supplying plant (manufacturer) must close the drain and fill, equalization and control valves and disconnect the rubber-fabric hoses, and employees of the liquefied gas office or the commodity transport point of the Tsentrgaz association are obliged to:

a) check the shut-off and safety valves for leaks;

b) shut off the drain and fill valves and equalize valves and seal them;

c) screw plugs onto the fittings of the control and drain valves;

d) close the fittings with a cap and, securing it, seal it.

Sealing of the drain and fill and equalization valves and the tank cap is carried out in accordance with section 5 of the “Rules for the Transportation of Goods” of the Ministry of Railways.

§ 69. Supplier plants (manufacturers) are required to keep a filling log, which must contain the following columns:

a) date of filling;

b) tank car number;

c) name of the tank manufacturer;

d) registration number of the tank vessel;

e) tank capacity, m;

f) mass of gas, t;

g) the date of the next internal inspection and hydraulic test of the tank vessel;

h) signature of the responsible person of the supplier plant (manufacturer);

i) signature of the responsible person of the office or commodity transport point of the Tsentrgaz association that accepted the tank.

§ 70. For each tank filled with liquefied gas, the supplying plant (manufacturer) issues a passport certifying that the quality of the product meets the requirements of state standards or technical specifications.

The passport must contain:

a) the name of the supplier plant (manufacturer), its location or code name, its trademark;

b) name of the product and its brand;

c) GOST number or technical specifications;

d) fractional composition according to GOST or technical conditions and actual;

e) date of analysis;

f) product mass, t;

g) product temperature, °C;

h) railway number of the tank.

When transporting liquefied gases on routes using one consignment note, the passport must be attached in at least five copies.

§ 71. The quantity of product poured into the tank is determined by the supplying plant (manufacturer). An acceptance certificate is drawn up for the quantity of the filled product transferred by the supplier plant (manufacturer) to the office or commodity-transport point of the Tsentrgaz association.

3. Transportation of tanks

§ 72. Tanks accepted from the supplying plant (manufacturer) are presented for transportation by the office or commodity-transport point of the Tsentrgaz association, which must present the dispatch station with a consignment note for each tank.

When transporting liquefied gases by route (tanks are addressed to one destination station to the address of one consignee), the office or freight transport point submits one consignment note.

In local traffic, groups of wagons can also be accepted for transportation using one consignment note in the manner established by the head of the road.

The consignment note is drawn up in the name of a specific consignee, signed by employees of the office or commodity transport point, accompanies the tanks along their entire route and is issued to the consignee along with the tanks at the destination station.

§ 73. The consignment note is the main transportation document. All information required by the invoice form must be entered in the appropriate columns by the office or commodity-transport point of the Tsentrgaz association, guided by section 6 of the Rules for the Transportation of Goods of the Ministry of Railways. No erasures or blots are allowed in the invoice. If the information included in the invoice changes, you must fill out a new invoice form.

At the top of the consignment note, the office or shipping point must affix a colorful stamp indicating the danger of the cargo.

Each consignment note presented for transportation must be accompanied by a passport certifying the quality of the product (the passport is sewn to the consignment note).

§ 74. The time of acceptance of tanks for transportation is certified by the station’s calendar stamp on the consignment note. To certify the acceptance of tanks for transportation, the departure station issues a cargo acceptance receipt to the office or commodity transport point.

§ 75. Railways are obliged to ensure the movement of both loaded and empty tanks within the time limits specified in section 14 of the “Rules for the Transportation of Goods” of the Ministry of Railways.

Tanks, both loaded and empty, travel along the railways without accompanying conductors.

§ 76. A tank car with a detected malfunction, due to which it cannot follow its intended purpose, is uncoupled from the train and taken to a separate track in a safe place. In the event of a malfunction of a tank vessel, as well as in the event of damage as a result of a wreck or accident, the station manager notifies the shipper by telegraph through the head of the departure station about the nature and cause of the malfunction.

Upon receipt of notification of the uncoupling of the tank, the office or commodity transport point must send a responsible representative to the uncoupling station.

An error has occurred

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13.1. Liquefied hydrocarbon gases (LPG) are supplied to gas filling stations in special automobile tanks.

13.2. Draining LPG from automobile tanks is a gas-hazardous work and must be carried out in compliance with safety rules, these Rules and production instructions.

13.3. LPG is drained from automobile tanks, as a rule, only during daylight hours.

13.4. Tankers must be equipped with:

an exhaust pipe with a muffler leading to its front part;

the exhaust pipe must have a spark arresting mesh;

The gas carrier must have two carbon dioxide fire extinguishers.

13.5. Car tanks are accepted and inspected at gas filling stations.

13.6. When accepting automobile tanks, the following is checked: compliance of the tank and the amount of LPG filled with shipping documents;

the presence of seals on the drain fittings;

no damage to the tank body and serviceability of shut-off and control valves and rubber-fabric hoses;

presence and level of LPG in the tank using control valves and level gauge.

13.7. The shipping documents indicate the name of the supplier, date of shipment, tank number, mass (weight) of gas filled into the tank.

13.8. The serviceability of the shut-off valves on the tank is checked by external inspection.

The valve should be opened smoothly, without causing hydraulic shock.

13.9. Preparation for draining and draining of LPG from automobile tanks into gas station tanks is carried out by cylinder fillers and repairmen under the guidance of a shift foreman. During the draining operation, at least two gas station service personnel must be present.

13.10. Before draining LPG from a vehicle tank, gas station service personnel:

secures the tank car with special wooden shoes or shoes made of non-sparking metal;

checks the serviceability and reliability of flexible hoses for draining LPG from a vehicle tank;

Grounds the tank car.

13.11. Permission to drain LPG from a tank truck is issued by a shift foreman and supervises the persons involved in draining LPG.

13.12. Draining LPG from an automobile tank into tanks is allowed after checking the correct opening and closing of the valves associated with the technological operation of draining the LPG.

13.13. Personnel must carry out drainage operations wearing standard clothing, hats and safety glasses.

13.14. LPG is drained from automobile tanks to gas filling stations using one of the following methods:

creating the necessary pressure difference between the automobile tank and the reservoir by pumping LPG vapors from a tank of another group into the automobile tank with a compressor;

creating a pressure difference between the automobile tank and the reservoir by heating LPG vapor in the evaporator;

pumping LPG with pumps;

gravity flow, when the tanks to be filled are located below the vehicle tank.

13.15. It is not allowed to create a pressure difference between the vehicle tank and the reservoir by releasing the vapor phase of gas from the tank being filled into the atmosphere.

13.16. The pressure of the vapor phase pumped by the compressor or created by the evaporator in the automobile tank must not exceed the operating pressure indicated on the automobile tank.

When the pressure in the automobile tank increases above the operating pressure, the compressor or evaporator must be turned off.

13.17. The pressure difference between the automobile tank and the reservoir is usually allowed to be 0.15-0.2 MPa.

13.18. When draining LPG from automobile tanks, the vehicle engine is not allowed to run.

13.19. After completing the preparatory operations for draining the LPG and checking the tank car by maintenance personnel before removing the seals from the drain fittings, the driver is required to hand over the ignition keys to the replacement gas station foreman.

13.20. The driver is not allowed to be in the cab while draining LPG.

13.21. Removing the plugs from the drain fittings of the automobile tank is allowed only after stopping the car engine, and turning on the engine is allowed only after disconnecting the hoses from the process gas pipelines of the gas station and installing the plugs on the drain fittings.

13.22. After draining the LPG, vapors should be removed from the automobile tank to a pressure of 0.05 MPa.

Discharge of gas into the atmosphere is not permitted.

13.23. During draining of LPG, maintenance personnel who are not involved in the draining operation should not be in the vicinity.

13.24. It is not allowed to leave automobile tanks connected to the process gas pipelines of a gas station during the period when LPG is not drained.

13.25. Personnel involved in draining are required to monitor the tightness of all connections of process gas pipelines, tanks and automobile tanks. If a gas leak is detected, the drainage is stopped and measures are taken to eliminate it.

13.26. During draining of LPG, it is not allowed to carry out any work to seal connections under pressure; It is permitted to disconnect the flexible hoses of the vehicle tank only after turning it off and releasing the pressure in the drain hoses.

13.27. It is not allowed to leave a tank truck, drain gas pipelines, tanks, operating compressors, pumps and evaporators unattended during the LPG draining period.

13.28. During the draining period, continuous monitoring of the pressure and gas level in the vehicle tank and the receiving tank must be ensured.

Tanks are filled with LPG to no more than 85% of their geometric volume. If a tank overflows, excess gas must be drained into other tanks. The release of excess gas into the atmosphere is not permitted.

13.29. Discharge operations of LPG at gas filling stations during a thunderstorm, as well as during hot work in the production area, are not allowed.

13.30. During the period of LPG discharge, visual communication must be ensured between personnel servicing process gas pipelines and equipment (discharge columns, compressors, pumps and evaporators).

13.31. After draining is complete, the valves on the tank truck must be plugged and checked for leaks with soap emulsion.

13.32. Rubber-fabric sleeves (hoses) of automobile tanks must be attached to the drain tip with steel clamps (at least two clamps for each end of the hose). The use of wire clamps is not permitted.

It is not allowed to drain LPG if the hoses (hoses) have cracks, fractures, potholes and other damage and consist of separate parts.

Sleeves with external metal spirals are considered unsuitable if the spirals are torn or partially missing.

13.33. To thaw frozen fittings and drain gas pipelines, heated sand should be used, hot water, water vapor. The use of fire is not allowed.

13.34. If a LPG tank with a leak arrives at a gas filling station, it must be immediately unloaded according to special instructions providing additional measures security. In this case, a defective act is drawn up. It is not allowed to repair a tank car on the territory of a gas station.

13.35. It is not allowed to fill tanks with gas in cases provided for by the rules for the design and safe operation of pressure vessels, as well as in the following cases:

if cracks, bulges, gaps or sweating in welds, leaks in flange connections, ruptures of gaskets are found in the main elements of the tank;

in case of malfunction of safety valves;

in case of malfunction of level measuring devices;

in case of malfunction or incomplete quantity of fasteners on manholes and hatches;

during settlement of tank foundations and supports of gas supply pipelines.

13.36. The following are posted in the pump-compressor room, process unit or control unit:

wiring diagram for technological equipment with drains, dispensers and tanks;

scheme for draining LPG from automobile tanks;

production instructions containing technology and safety measures when draining LPG.

13.37. Warning posters with safety requirements when discharging LPG from automobile tanks must be posted in the LPG drainage area.

14. Safety requirements when refueling gas vehicles

14.1. When filling cylinders at gas filling stations, the requirements of the rules for the design and safe operation of pressure vessels must be met.

14.2. Refueling of gas-cylinder vehicles is carried out in accordance with production instructions.

The technical serviceability of gas cylinders in gas vehicles and the timing of their inspection must be monitored by the vehicle owner.

Cylinders are subject to inspection once every 2 years.

14.3. Before filling car cylinders, a waybill (route) sheet with a mark on checking the cylinders or a certificate with a coupon for the right to drive a gas-cylinder car are checked.

14.4. The coupon states:

car name;

car number;

cylinder serial number;

cylinder capacity (l);

date of subsequent technical examination of the cylinder; registration mark.

14.5. The following must be stamped and visible on the cylinder installed on the vehicle:

manufacturer's trademark;

cylinder number (factory);

actual weight of an empty cylinder (kg) in accordance with the state standard or specifications for their manufacture;

date (month, year) of manufacture and year of the next survey;

working pressure (P), MPa;

trial hydraulic pressure(P), MPa;

cylinder capacity (l) in accordance with the state standard or specifications for their manufacture; number of the standard for their production.

14.6. Cylinders installed as consumable containers for LPG on vehicles must be firmly secured and hermetically connected to gas pipelines.

14.7. It is not allowed to refill LPG cylinders installed on vehicles that have:

the periodic inspection period has expired;

there are no established inscriptions; valves and valves are not corrected;

the cylinder body is damaged (sinks, nicks, corrosion , dents);

the cylinder fastening is loose; there are leaks from the connections.

14.8. LPG cylinders are filled with LPG when the vehicle engine is turned off.

The engine can be turned on after disconnecting the hose and installing the plug on the filling device.

Before the car enters the territory of the gas station for refueling, passengers disembark.

14.9. The degree of filling of the cylinder is determined by the maximum filling control valve or shut-off valve. Overfilling the cylinder is not allowed.

If leaks are detected in gas equipment car or the cylinder is overfilled, the gas from it is drained into the tank.

14.10. When refueling LPG vehicles, you should: if the engine of a gas-filled vehicle has interruptions during startup, it must be turned off and the vehicle must be rolled away from the gas pump to a distance of at least 15 m;

do not switch the car engine from one type of fuel to another on the territory of a gas station;

do not adjust or repair the gas equipment of gas-cylinder vehicles on the territory of a gas station;

do not create pressure at the filling dispenser that exceeds the operating pressure of the cylinder;

do not tighten connections on cylinders and communications;

do not leave gas pumps and cars unattended;

Do not release LPG from cylinders into the atmosphere when overfilled.

15. Safety requirements for inspection of tanks

15.1. Before internal inspection, hydraulic testing, repair or dismantling, tanks must be freed from gas, unevaporated residues and thoroughly processed.

15.2. Releasing reservoirs by releasing gas through a “candle” into the atmosphere is not allowed.

Burning out the remaining vapor phase should be carried out on a “candle” made of a steel pipe with a diameter of 20 mm, a height of 3 m, stably installed in a fire-safe place at a distance of 10-12 m from the boundary of the tank installation with an inclination of 50-60° to the horizon.

Filling the reservoir with water should begin at the moment when the flame on the “candle” decreases to 20-30 cm, while the combustion of the vapor phase displaced by water should continue until the flame goes out.

The water supply stops when the tank is completely filled.

15.3. Treatment of tanks should be carried out after disconnecting them from the gas pipelines of the vapor and liquid phases using plugs by steaming them and purging them with an inert gas or filling them with warm water.

15.4. The quality of degassing should be checked by analyzing air samples taken from the bottom of the vessel. The LPG concentration of the sample after degassing should not exceed 20% of the lower concentration limit of flame propagation.

15.5. Depressurization of tanks without first reducing their pressure to atmospheric pressure, as well as the use of air for degassing, are not permitted.

15.6. When working inside tanks, the safety measures provided for in the production instructions and these Rules must be observed.

15.7. Work inside tanks must be carried out according to the permit by a team of at least three people under the guidance of a specialist.

Team members must be instructed in the safety of work.

More than one person is not allowed to enter the tank.

Anyone working in the tank must have a hose gas mask and wear a rescue belt with a rescue rope attached to it.

There must be at least two people outside the tank, who must hold the ends of the ropes in their hands, observe the person working in the tank, be ready to provide him with the necessary assistance and not allow unauthorized persons to the work site.

The residence time in the tank should not exceed 15 minutes.

Every 30 minutes the tank should be checked for gas contamination. If a gas concentration above 20% of the lower concentration limit of flame propagation is detected, work in the tank is stopped.

The tank is degassed again and then checked for gas contamination.

15.8. During work in the tank, persons not involved in the work are not allowed to be near the tank.

15.9. Sediments removed from tanks must be kept moist and removed from the gas station site for disposal in a specially designated area.

Sections of gas pipelines with pyrophoric deposits must be dismantled and stored in a safe area on the day of their opening.

15.10. Water after washing and testing the tanks must be discharged to the sewer system through settling tanks that prevent LPG from entering the sewer system, or transported to places determined by sanitary and epidemiological supervision.

15.11. Tanks must be put into operation after inspection or repair on the basis of written permission from the head of the gas station.

16. Gas hazardous work

16.1. Gas-hazardous work at gas filling stations is carried out in accordance with the requirements of safety rules and these Rules.

16.2. Managers, specialists and workers who are trained in the technology of conducting gas hazardous work, the rules for using personal protective equipment (gas masks and life belts), methods of providing first (pre-medical) aid, who are certified and have passed the test of knowledge in the field are allowed to perform gas-hazardous work. industrial safety within the scope of these Rules.

Practical skills are practiced at training grounds or at workplaces in compliance with safety measures, according to programs agreed upon with the territorial bodies of the Gosgortekhnadzor of Russia.

Before being allowed to perform gas-hazardous work (after testing knowledge), everyone undergoes an internship under the supervision of an experienced worker during the first ten work shifts.

Internship and permission to independently perform gas-hazardous work are formalized by a decision on the organization.

16.3. A work permit is issued for carrying out hazardous gas work (Appendix 19).

Such work includes:

release of gas into gas pipelines and other technological equipment of gas filling stations during commissioning after completion of construction, reconstruction, expansion and major repairs, during re-opening;

carrying out commissioning works;

initial filling of tanks with liquefied gas when putting them into operation, as well as after repair, cleaning, and technical inspection;

removal of blockages, installation and removal of plugs on existing gas pipelines, as well as disconnection of units, equipment and individual components from gas pipelines, taking into account in the log (Appendix 17);

disconnection from the existing network and purging of gas pipelines, conservation and re-preservation of gas pipelines and gas filling station technological equipment;

preparation for technical inspection of LPG tanks;

repair of existing internal and external gas pipelines, equipment of pump and compressor rooms, gas stations, LPG tanks;

dismantling of gas pipelines, tanks, and technological equipment of gas filling stations;

current repairs associated with dismantling fittings, pumps and compressors at the work site;

excavation of soil in places of gas leakage until it is eliminated;

all types of repairs related to welding and hot work on the gas station territory;

carrying out electrical tests in explosive areas.

16.4. Periodically repeating hazardous gas work performed under similar conditions is usually permanent staff performers and are an integral part technological process, can be carried out without issuing a work permit according to production instructions approved for each type of work.

Such works are:

maintenance of shut-off valves, safety valves and checking their settings;

maintenance of gas station technological equipment;

repair, inspection and ventilation of wells;

repair work without the use of welding and cutting in wells, trenches, recesses;

draining LPG from tankers into tanks, pumping out unevaporated residues of liquefied gases from tanks, refueling gas-cylinder vehicles, draining gas from overfilled cylinders;

replacement of instrumentation and control equipment on process equipment.

The specified work must be recorded in the work log. The magazine is laced, sealed, and its pages are numbered.

16.5. Work on the release of gas into gas pipelines and technological equipment of a gas filling station, repairs using welding and gas cutting, re-opening of gas filling stations, commissioning, initial filling of LPG tanks are carried out in accordance with the approval order and a special plan approved by the head of the gas filling station.

16.6. The work plan indicates the strict sequence of their implementation, the placement of people, the need for mechanisms, devices and materials, and provides for measures to ensure the safety of each gas-hazardous work, indicating the persons responsible for the conduct and preparation of the work. Responsibility for coordinating these works and providing general management rests with the head of the gas station or the person replacing him.

16.7. Work to eliminate gas leaks and eliminate accidents is carried out without work permits until the direct threat to operating personnel is eliminated, material assets, buildings and structures and are carried out according to plans for localization and elimination of accidents.

16.8. The work permit is issued to the person responsible for carrying out gas-hazardous work by the head of the gas station.

If the work is not completed, and the conditions for its implementation and nature have not changed, the permit may be extended by the person who issued it.

16.9. To prepare for gas-hazardous work, a set of preparatory measures is carried out, provided for in the work permit and relevant instructions.

16.10. Before starting gas-hazardous work, the person responsible for carrying it out is obliged to check the availability and serviceability of personal protective equipment, as well as instruct the performers on the necessary safety measures when performing the work, after which each person who received the instruction signs the work permit.

16.11. Permit orders are recorded in the journal (Appendix 20).

The magazine is laced, sealed, and the pages are numbered.

Permit orders are kept for at least one year. Permits issued for the primary discharge of gas, repair work using welding on elements of technological gas pipelines and tanks in the ground are permanently stored in the as-built technical documentation of the gas filling station.

The permit log is kept for 5 years.

16.12. Gas-hazardous work at a gas filling station must be performed by at least two workers. Work in tanks, station premises, as well as repairs using gas cutting and welding are carried out by a team of at least three workers, under the guidance of specialists.

Inspection, repair, ventilation of wells, draining of unevaporated LPG residues from tanks and cylinders, maintenance of gas pipelines and technological equipment, filling of LPG tanks during operation may be carried out by two workers. The management of these works may be entrusted to the most qualified worker.

Refueling of gas-cylinder vehicles can be carried out by one operator.

16.13. When carrying out gas-hazardous work, the responsible person is obliged to ensure the ability to quickly remove workers from the hazardous area.

16.14. Gas-hazardous work at gas filling stations, carried out according to work permits, is carried out, as a rule, during daylight hours.

In exceptional cases, urgent gas-hazardous work may be carried out in the dark, subject to the implementation of additional measures to ensure the safe conduct of work.

16.15. On the territory and premises of gas filling stations, it is not allowed to carry out welding and cutting on existing gas pipelines without shutting them off and purging them with inert gas or steam, as well as dismantling flange threaded connections, fittings and equipment on unplugged and unpurged sections of the gas pipeline.

When disconnecting gas pipelines and equipment, plugs must be installed at closed disconnected devices.

16.16. Pumps and compressors must be stopped during gas hazardous work in the pump and compressor room.

16.17. All gas pipelines and gas equipment before their connection to existing gas pipelines, as well as after repairs, must be subject to external inspection and control pressure testing with air or inert gases.

Control pressure testing of internal gas pipelines and gas filling station equipment is carried out at a pressure of 0.01 MPa. The drop should not exceed 0.0006 MPa in one hour.

LPG tanks and gas pipelines are tested at a pressure of 0.3 MPa for one hour. Visible drops on the pressure gauge and leaks determined using soap emulsion or instruments are not allowed.

The results of control pressure testing are recorded in work permits for performing gas-hazardous work.

16.18. Before starting gas, gas pipelines and equipment must be purged with inert gas or liquefied gas vapor until all air is displaced.

Fittings intended for purging vessels must be located in such a way as to ensure purging with minimal costs purge reagent.

When organizing purging with liquefied gas vapors, measures must be developed for its safe implementation, excluding ignition of the gas-air mixture from a fire source.

The end of the purge is determined by analysis. The volume fraction of oxygen in the gas sample should not exceed 1%.

16.19. In the process of performing gas hazardous work, all orders regarding the procedure for carrying out such work must be given by the person responsible for the work.

16.20. Emergency work at a gas station is carried out by gas station personnel. The participation of emergency services of gas distribution organizations in emergency work at gas filling stations is established by an agreed plan for the localization and elimination of accidents.

The actions of gas station personnel to localize and eliminate accidents should be determined by the plan for localization and elimination of accidents and the plan for interaction between services of various departments.

16.21. The plan for localizing and eliminating accidents takes into account the features of the technological process, the requirements of instructions on safe work methods, and provides for:

methods and means for extinguishing fire; a list of persons (indicating telephone numbers and other means of communication and calling) who must be immediately notified of the accident; plan for evacuation of vehicles from the danger zone; scenarios of possible accidents;

distribution of responsibilities and the procedure for specific actions of gas station personnel to prevent and eliminate accidents, the procedure for interaction between individuals involved in the elimination of an accident;

methods for eliminating the accident and a list of necessary material and technical means;

conditions for interaction with fire services, police, ambulance, electricity supply, water supply, etc.

Responsibility for drawing up the plan, timely introduction of changes and additions to it, review (at least once a year) lies with the head of the gas station.

16.22. The plan for interaction between services of various departments for localizing and eliminating accidents at gas filling stations is coordinated with interested organizations and approved in the prescribed manner.

16.23. Educational and training sessions on localizing and eliminating accidents are held at gas filling stations at least once a quarter and are reflected in the log.

17. Hot work

17.1. Repair work involving the use of open fire, as well as burning out the remaining vapor phase of LPG from tanks, is allowed in exceptional cases, provided that the workers comply with safety rules, these Rules and other regulatory and technical documents establishing safety requirements for welding and other hot work in hazardous areas. production facilities approved in accordance with the established procedure.

17.2. Hot work must be carried out during daylight hours according to a special plan approved by the head of the gas station, agreed with the local fire department and the permit.

17.3. The work permit for hot work must be issued in advance for carrying out necessary preparation to work.

17.4. Hot work is permitted only after completion of preparatory work and activities provided for by the plan and work permit.

Preparatory work for hazardous gases (purging, shutting down equipment, installing plugs, degassing, etc.) is carried out in accordance with the requirements of these Rules.

17.5. Gas should be vented from the section of the gas pipeline to be repaired only through purge plugs.

When bleeding gas, all mechanisms must be located outside the security zone on the windward side.

17.6. The place where hot work is carried out should be provided with fire extinguishing equipment. A fire hose with a trunk from the internal fire water supply must be laid to the work site.

17.7. To protect equipment and combustible structures from electric arc sparks, welding workplaces must be fenced with portable metal shields, equipment and combustible structures metal sheets or asbestos blankets.

17.8. When hot work is carried out at a gas station, it is not allowed to carry out operations for receiving LPG and refueling cars, and road signs must be installed prohibiting the entry of vehicles into the territory of the gas station.

17.9. The person responsible for carrying out hot work is obliged to instruct the performers on the measures fire safety when carrying them out.

17.10. When performing work indoors, posts are placed outside to prevent access to the work site by unauthorized persons.

17.11. During the entire period of work, supply and exhaust ventilation must be in place in the premises.

17.12. Before and during hot work in premises, as well as in a 20-meter zone from the workplace on the territory, the air environment must be analyzed for LPG content at least every 10 minutes.

If there are LPG vapors in the air, regardless of their concentration, hot work must be suspended.

17.13. After completion of the work, the work site is inspected, combustible structures are watered, and measures are taken to eliminate the possibility of a fire.

17.14. Upon completion of hot work, cylinders with flammable gases and oxygen are removed from the work site to permanent storage areas.

Annex 1

Sample

Technical passport of the gas filling station

Application. Layout of the gas station and its main structures (general plan) on a scale of 1:1000 or 1:500 with an explanation.

Note. The gas station diagram must indicate the structures built according to the original design.

Appendix 2

Sample

Magazine

acceptance and delivery of shifts

Appendix 3

–Tyumennefteprodukt"

Application

to order No. ______

from "____"__________2006

REGULATIONS

RECEPTION OF LIQUEFIED HYDROCARBON GAS AT MAZS (MAZK)

TYUMEN 2006

1 area of ​​use. 3

2. Terms and abbreviations. 3

3. Regulatory documents... 3

4. Process limitations. 4

5. Process structure. 6

6. Table of correspondence between business roles and positions. 8

MAZS operator for LPG reception

Information system:

Mobile Map. Hardware and software system.

Receipt of LPG (electronic media)

Resumption of sales of goods at MAZS

Brief description of the function:

If there is only one MAZS operator on shift to receive LPG: opening the control room door and entering the workplace, resuming the sale of goods.

If there are two MAZS operators on shift to receive LPG: resumption of sales of non-productive gas and LPG.

Actions of the cylinder filler:

1. Transfer of primary fire extinguishing equipment to the site.

2. Remove the “No Entry” road sign on the entry and exit roads of roads open to public use.

MAZS operator for LPG reception,

Cylinder filler

Sequence of work No. 7.3.3. ends with only one condition:

“The sale of goods at MAZS has been resumed” - Then the process “Sale of goods at MAZS” is carried out.

8. APPENDIX. DOCUMENT FORMS