STATE STANDARD OF THE UNION SSR

SYSTEMSA DESIGN DOCUMENT FOR CONSTRUCTION

GAS SUPPLY.
  INTERNAL DEVICES

WORKING DRAWINGS

GOST 21.609-83

STANDARDS PUBLISHING HOUSE

Moscow

STATE STANDARD OF THE UNION SSR

This standard establishes the composition and design rules for working drawings of internal gas supply devices * for buildings and structures of all industries and national economy.

* Internal gas supply devices are hereinafter referred to as gas supply.

1. GENERAL PROVISIONS

1.1. Working drawings of gas supply are performed in accordance with the requirements of this standard and other standards of the design documentation system for construction, as well as the norms of gas supply design.

1.2. The composition of the working drawings of gas supply (the main set of working drawings of the brand FGP) include:

general data on the working drawings;

drawings (plans, sections and views) of the location of gas pipelines, gas instrumentation and gas equipment **;

gas supply schemes;

drawings (plans, sections, types and diagrams) of gas installations;

sketch drawings of common types of atypical devices and gas supply structures ***.

**   Gas instrumentation and gas equipment are hereinafter referred to as equipment.

***   Sketch drawings of general types of atypical devices and structures are hereinafter referred to as drawings of general types.

To the main set of working drawings of the GSV brand, the specification of the equipment and the list of material requirements in accordance with GOST 21.109-80 are performed.

1.4. The diameter and thickness of the wall of the pipeline indicate the line of the leader.

For gas pipelines made of steel water and gas pipes indicate the diameter of the nominal passage and wall thickness.

For gas pipelines from steel electrowelded and other pipes indicate the outer diameter and wall thickness.

In the case when the alphanumeric designation of a gas pipeline is indicated on the shelf of the leader line, its diameter and wall thickness are indicated under the shelf of the leader line.

1.5. The risers of gas pipelines are designated by the brand consisting of the letter designation “St” and, through a hyphen, the serial number of the riser within the building (structure), for example St-1, St-2.

1.6. Conditional graphic images of valves (shut-off, regulating and safety) and equipment are accepted according to state standards, taking into account the additional images given in.

2. GENERAL DATA ON WORKING DRAWINGS

2.1. The general data of the main set of working drawings of the FGP brand in addition to the data provided for by GOST 21.102-79 include:

Key indicators for working drawings of the FGP brand

_________

* The characteristic of the gas used is indicated in a note.

3. DRAWINGS OF THE GAS PIPELINE
  AND EQUIPMENT

3.1. The drawings of the location of gas pipelines and equipment are performed in accordance with GOST 21.101 -79, taking into account the requirements of this standard.

3.2. Plans, cuts and types

3.2.1. Plans, sections and views are carried out on a scale of 1: 100 or 1: 200, nodes and fragments of plans, sections and types are carried out on a scale of 1:10 - 1: 100 according to GOST 2.302-68.

In case of small buildings or structures, when the execution of fragments is impractical, plans, sections and views are allowed to be carried out at the scales established for the fragments.

3.2.2. Pipelines located one above the other on the plans are conventionally represented by parallel lines.

3.2.3. Pipelines, equipment and fittings on plans, sections and views are indicated by conventional graphic images, and equipment for which conventional graphic images are missing are simplified graphic images.

Pipelines with a diameter of 100 mm and more on the fragments and nodes represent two lines.

3.2.4. On the plans, sections and views indicate: the coordination axis of the building (structure) and the distance between them (for residential buildings - the distance between the axes of the sections);

building structures and equipment to which gas-air is supplied and from which combustion products are diverted. Building structures and equipment indicate in continuous thin lines;

level marks for clean floors and main sites;

dimensional bindings of gas installations and equipment, inputs (outputs) and risers of gas pipelines to coordination axes or elements of building structures;

sizes of operational passes;

level marks or height adjustment installation of devices (if necessary).

The plans also indicate the names of the premises (types of premises for residential buildings) and the category of production for explosive, explosion-fire and fire danger (in a rectangle of size 5 ´ 8 mm), and on the cuts and types - the marks of the levels of the axes of gas pipelines and the top of the waste gas pipeline (candles).

The names of premises and the category of productions for explosive, explosion-fire and fire danger are allowed to be given in the explication of the premises according to Form 2 of GOST 21.501 -80.

The plans and sections of the location of household equipment (gas stoves, water heaters) in residential buildings, utility enterprises and public buildings provide data on the volume and height of the room in which this equipment is installed, and also indicate the location of the chimneys (their section) and the location of the ventilation lattices.

An example of a design plan is shown in, cut in and view of.

4. SCHEMES OF GAS SUPPLY

The scale of the images is according to GOST 2.302-68: for schemes 1: 100 or 1: 200, nodes of schemes 1:10 - 1:50, schemes for small buildings (structures) 1:20 - 1:50.

4.2. Pipelines and fittings in the diagrams are indicated by conventional graphic images, and equipment that lacks a conventional graphic image is indicated by a simplified graphic image.

For residential and public buildings, instead of a graphic image of the connected equipment, it is allowed to indicate its name.

4.3. With a large distance and (or) a complex arrangement of gas pipelines it is allowed to depict them with a gap in the form of a dotted line. Locations of gas line breaks are designated by lowercase letters.

Heck. 2

Heck. 3

4.4. On the diagrams indicate:

equipment, fittings, gas pipelines and their diameters;

places of attachment of devices (lugs);

elevations of axes of gas pipelines;

slopes of gas pipelines (for wet and liquefied petroleum gas);

dimensions of horizontal sections of gas pipelines in the presence of gaps;

gas pipelines and their designations.

An example of the design scheme is shown in.

5. DRAWINGS OF GAS INSTALLATIONS

5.1. Plans, sections, types and schemes of gas installations (hereinafter - installations) are carried out on a scale of 1:50 or 1: 100, units of installations are on a scale of 1: 2 - 1:20 according to GOST 2.302-68.

5.2. On the plans, sections and views, the elements of the installations are represented simply.

If it is necessary to show the methods of fastening the components of the installation or their connection among themselves, the corresponding elements of the installation are depicted in detail.

On the installation diagrams, the installation elements are indicated by conventional graphic images (in the axonometric image).

5.3. On the plans, sections and types of installations indicate:

the coordination axis of the building (structure) and the distance between them;

main dimensions, level marks and binding of installations to the coordination axes of the building (structure).

5.4. Pipelines in the plans, sections and types of installations depict a single line with a diameter of the pipeline up to 100 mm and two lines - with a diameter of more than 100 mm.

5.5. On the plans, sections and views, in addition to the elements of the installations, indicate the building structures with a solid thin line and selective devices (bosses) for the installation of instruments.

production part;

auxiliary part.

If a residential building has an extension or building in which public service enterprises are located, then each section of the specification is made up in parts:

residential part;

attached (built-in) part.

The name of each part is written in the form of a heading in column 2 of the specification and underline.

7.3. In the sections (parts) of the specification, elements are written in the following sequence:

equipment;

fittings;

gas pipelines for each diameter. Elements of gas pipelines (elbows, transitions, flanges, bolts, nuts, washers, etc.) do not include in the specification;

materials.

7.4. The specification takes the following units:

gas pipelines - m;

fittings - pcs .;

insulating materials - m 3;

coating and protection materials - m 2;

other materials - kg.

1. Scheme of the gas network in a semi-detached house 2. The diameters in the gas network supplying the meters with one apartment with a bathroom on the floor; with two apartments on the floor. 3. Sizes of niches for 1 - 3 gas meters. OKF is a clean floor level. 4. Niche for 1 electric and 1 gas meter. 5. Niche for 1 electric and 1 gas meter.

6. The room of inputs of engineering networks (DIN 18012) with the turning on and locking devices for strong and weak currents, gas, water supply and the sewerage. 7. Section of the premises of utilities engineering networks. 8. Layout of premises utilities utilities.

The following devices do not require connection to the gas ducts:

1. All types of gas cookers and gas refrigerators.

2. Heaters with a capacity of up to 10 liters in rooms with a volume of at least tenfold gas consumption.

3. Tanks for boiling linen and washing machines with a gas consumption of up to 2.5 m3 / h in rooms with a volume of at least tenfold gas consumption.

4. Gas heaters installed at the exterior walls with exhaust holes in the wall.

In all other cases (water heaters, laundry boilers and larger washing machines, heating stoves, etc.), gas appliances must be connected to gas ducts.

The supplier is obliged to install a fuse on the outlet nozzle, which eliminates the possibility of condensation and the return of exhaust gases. The automatic dimmer valve of the Dirmeyer system with thermal regulation (Fig. 2) protects the premises from cooling through the flue duct and from violation of the thrust when the exhaust duct is mixed (for off-gases from gas and solid-fuel appliances); in addition, this valve reduces noise. The carbon dioxide content in the air of rooms designed for temporary stay of people (bathroom, kitchen, etc.) should not exceed 0.4%; in rooms for a long stay (common rooms and bedrooms) about 0.15%.

Flues

No more than three firing points are allowed to be connected to the standard-section gas duct of 135 x 135 mm in brick walls: do not make gas ducts of more than 200 x200 mm; firing points operating on solid fuel and gas, if possible, do not attach to one gas duct. Ducts should be located in warm places to avoid condensation on the cold walls. On the top of the flue, you must install a wind cap. On flat roofs, ducts should be no less than 50 cm above the parapet (Fig. 3 and 4).

Gas consumption: for taking a shower for 5 minutes with a water heater with a capacity of 5 liters - 0.25 m3; for heating the room for 15 minutes - 0.25 m3.

Liquefied gas (non-toxic gases - propane, butane, etc.) is used for gas supply in remote areas.

Specifications for liquefied gas (TRF 1969):

Places for installation of cylinders: small cylinders can be installed in any room except sleeping rooms; large cylinders - outside the building in a lockable metal cabinet or in a room with a separate external entrance; 1 kg of liquefied gas (3 m3 of natural gas) gives about 5000kkal.

Liquefied gas costs almost 1/3 more than gas from the city network.

The diameters of pipes with liquefied gas are significantly less than the diameters of gas pipes of the city network due to increased pressure.

Gas network.

Legend of gas equipment

Explanations to the accepted terminology:
  gas appliances are devices that do not require connection to the ducts;
  gas firing points called devices that are connected to the ducts;
  the instructions “up to the counter” and “behind the counter” correspond to the direction of gas movement in the network.

Gas consumption: for every 1 m3 of air volume in a heated room during the heating season (September - May) with long-term heating (in residential buildings) 18 -25 m3 of gas, with periodic heating (in commercial premises) –10 -15 m3 of gas.

Color pipelines in the drawings: gas pipelines - yellow, cold water pipelines   - light blue, hot water pipes   - red.

The diameters of the supply pipelines and gas costs for different devices.

	1. Scheme of the gas network in a semi-detached house   2. The diameters in the gas network supplying the meters with one apartment with a bathroom on the floor; with two apartments on the floor.   3. Sizes of niches for 1 - 3 gas meters. OKF - clean floor level.   4. Niche for 1 electric and 1 gas meter.   5. Niche for 1 electric and 1 gas meter.
	6. The room of inputs of engineering networks (DIN 18012) with the turning on and locking devices for strong and weak currents, gas, water supply and the sewerage.   7. Section of the premises of utilities engineering networks.   8. Layout of premises utilities utilities.

The following devices do not require connection to the gas ducts:

1. All types of gas cookers and gas refrigerators.
  2. Heaters with a capacity of up to 10 liters in rooms with a volume of at least tenfold gas consumption.
  3. Tanks for boiling linen and washing machines with a gas consumption of up to 2.5 m3 / h in rooms with a volume of at least tenfold gas consumption.
  4. Gas heaters installed at the exterior walls with exhaust holes in the wall.

In all other cases (water heaters, laundry boilers and larger washing machines, heating stoves, etc.), gas appliances must be connected to gas ducts.

The supplier is obliged to install a fuse on the outlet nozzle, which eliminates the possibility of condensation and the return of exhaust gases. The automatic dimmer valve of the Dirmeyer system with thermal regulation (Fig. 2) protects the premises from cooling through the flue duct and from violation of the thrust when the exhaust duct is mixed (for off-gases from gas and solid-fuel appliances); in addition, this valve reduces noise. The carbon dioxide content in the air of rooms designed for temporary stay of people (bathroom, kitchen, etc.) should not exceed 0.4%; in rooms for a long stay (common rooms and bedrooms) about 0.15%.

Flues

No more than three firing points are allowed to be connected to the standard-section gas duct of 135 x 135 mm in brick walls: do not make gas ducts of more than 200 x200 mm; firing points operating on solid fuel and gas, if possible, do not attach to one gas duct. Ducts should be located in warm places to avoid condensation on the cold walls. On the top of the flue, you must install a wind cap. On flat roofs, ducts should be no less than 50 cm above the parapet (Fig. 3 and 4).

Gas consumption: for taking a shower for 5 minutes with a water heater with a capacity of 5 liters - 0.25 m3; for heating the room for 15 minutes - 0.25 m3.

Liquefied gas (non-toxic gases - propane, butane, etc.) is used for gas supply in remote areas.

Specifications for liquefied gas (TRF 1969)

1. Products of gas combustion   2. Fuse and valve on the instrument connection   3. Flue pipe for flat roofs   4. The same, if there is a veranda	5. The device of the exhaust duct with double walls   6. Plan of the bathroom and kitchen with a water heater in the hallway niche   7. Small compressed gas cylinders can be installed in any room except sleeping areas.   8. Large cylinders are installed outside in a niche or in a separate lockable sheet steel cabinet.
	9. Diagram of a gas network connected to compressed gas cylinders

Places for installation of cylinders: small cylinders can be installed in any room except sleeping rooms; large cylinders - outside the building in a lockable metal cabinet or in a room with a separate external entrance; 1 kg of liquefied gas (3 m3 of natural gas) gives about 5000kkal.

Liquefied gas costs almost 1/3 more than gas from the city network.
  The diameters of pipes with liquefied gas are significantly less than the diameters of gas pipes of the city network due to increased pressure.

Ernst Neufert. Construction Engineering / Ernst Neufert BAUENTWURFSLEHRE

1. Scheme of the gas network in a semi-detached house 2. The diameters in the gas network supplying the meters with one apartment with a bathroom on the floor; with two apartments on the floor. 3. Sizes of niches for 1 - 3 gas meters. OKF is a clean floor level. 4. Niche for 1 electric and 1 gas meter. 5. Niche for 1 electric and 1 gas meter.

6. The room of inputs of engineering networks (DIN 18012) with the turning on and locking devices for strong and weak currents, gas, water supply and the sewerage. 7. Section of the premises of utilities engineering networks. 8. Layout of premises utilities utilities.

The following devices do not require connection to the gas ducts:

1. All types of gas cookers and gas refrigerators.

2. Heaters with a capacity of up to 10 liters in rooms with a volume of at least tenfold gas consumption.

3. Tanks for boiling linen and washing machines with a gas consumption of up to 2.5 m3 / h in rooms with a volume of at least tenfold gas consumption.

4. Gas heaters installed at the exterior walls with exhaust holes in the wall.

In all other cases (water heaters, laundry boilers and larger washing machines, heating stoves, etc.), gas appliances must be connected to gas ducts.

The supplier is obliged to install a fuse on the outlet nozzle, which eliminates the possibility of condensation and the return of exhaust gases. The automatic dimmer valve of the Dirmeyer system with thermal regulation (Fig. 2) protects the premises from cooling through the flue duct and from violation of the thrust when the exhaust duct is mixed (for off-gases from gas and solid-fuel appliances); in addition, this valve reduces noise. The carbon dioxide content in the air of rooms designed for temporary stay of people (bathroom, kitchen, etc.) should not exceed 0.4%; in rooms for a long stay (common rooms and bedrooms) about 0.15%.

Flues

No more than three firing points are allowed to be connected to the standard-section gas duct of 135 x 135 mm in brick walls: do not make gas ducts of more than 200 x200 mm; firing points operating on solid fuel and gas, if possible, do not attach to one gas duct. Ducts should be located in warm places to avoid condensation on the cold walls. On the top of the flue, you must install a wind cap. On flat roofs, ducts should be no less than 50 cm above the parapet (Fig. 3 and 4).

Gas consumption: for taking a shower for 5 minutes with a water heater with a capacity of 5 liters - 0.25 m3; for heating the room for 15 minutes - 0.25 m3.

Liquefied gas (non-toxic gases - propane, butane, etc.) is used for gas supply in remote areas.

Specifications for liquefied gas (TRF 1969):

Places for installation of cylinders: small cylinders can be installed in any room except sleeping rooms; large cylinders - outside the building in a lockable metal cabinet or in a room with a separate external entrance; 1 kg of liquefied gas (3 m3 of natural gas) gives about 5000kkal.

Liquefied gas costs almost 1/3 more than gas from the city network.

The diameters of pipes with liquefied gas are significantly less than the diameters of gas pipes of the city network due to increased pressure.

GAS NETWORKS. SYMBOLS

Symbols of gas equipment. Explanation of accepted terminology. Color pipelines on the drawings. The diameters of the supply pipelines and gas costs for different devices. Gas ducts. Technical conditions for liquefied gas. Device of gas ducts.

Explanations to the accepted terminology:

gas appliances  named devices that do not require connection to the ducts;

gas firing points called devices that are connected to the ducts;

the instructions “up to the counter” and “behind the counter” correspond to the direction of gas movement in the network.

Gas consumption: for every 1 m3 of air volume in a heated room for the heating season (September - May) with a long fire (in residential buildings) 18 - 25 m3 of gas, with a periodic fire (in commercial premises) - 10 - 15 m3 of gas.

The color of the pipelines in the drawings: gas pipelines - yellow, cold water pipelines - light blue, hot water pipelines - red.

The diameters of the supply pipelines and gas costs for different devices:

1. Scheme of the gas network in a semi-detached house

2. The diameters in the gas network supplying the meters with one apartment with a bathroom on the floor; with two apartments on the floor.

3. Sizes of niches for 1 - 3 gas meters. OKF is a clean floor level.

4. Niche for 1 electric and 1 gas meter.

5. Niche for 1 electric and 1 gas meter.

The following devices do not require connection to the gas ducts:

1. All types of gas cookers and gas refrigerators.

2. Heaters with a capacity of up to 10 liters in rooms with a volume of at least tenfold gas consumption.

3. Tanks for boiling linen and washing machines with a gas consumption of up to 2.5 m3 / h in rooms with a volume of at least tenfold gas consumption.

4. Gas heaters installed at the exterior walls with exhaust holes in the wall.

In all other cases (water heaters, laundry boilers and larger washing machines, heating stoves, etc.), gas appliances must be connected to gas ducts.

The supplier is obliged to install a fuse on the outlet nozzle, which eliminates the possibility of condensation and the return of exhaust gases. The automatic dimmer valve of the Dirmeyer system with thermal regulation (Fig. 2) protects the premises from cooling through the flue duct and from violation of the thrust when the exhaust duct is mixed (for off-gases from gas and solid-fuel appliances); in addition, this valve reduces noise. The carbon dioxide content in the air of rooms designed for temporary stay of people (bathroom, kitchen, etc.) should not exceed 0.4%; in rooms for a long stay (common rooms and bedrooms) about 0.15%.

Flues

No more than three firing points are allowed to be connected to the standard-section gas duct of 135 x 135 mm in brick walls: do not make gas ducts of more than 200 x200 mm; firing points operating on solid fuel and gas, if possible, do not attach to one gas duct. Ducts should be located in warm places to avoid condensation on the cold walls. On the top of the flue, you must install a wind cap. On flat roofs, ducts should be no less than 50 cm above the parapet (Fig. 3 and 4).

Gas consumption: for taking a shower for 5 minutes with a water heater with a capacity of 5 liters - 0.25 m3; for heating the room for 15 minutes - 0.25 m3.

Liquefied gas (non-toxic gases - propane, butane, etc.) is used for gas supply in remote areas.

Specifications for liquefied gas (TRF 1969):

Places for installation of cylinders: small cylinders can be installed in any room except sleeping rooms; large cylinders - outside the building in a lockable metal cabinet or in a room with a separate external entrance; 1 kg of liquefied gas (3 m3 of natural gas) gives about 5000kkal.

Liquefied gas costs almost 1/3 more than gas from the city network.

The diameters of pipes with liquefied gas are significantly less than the diameters of gas pipes of the city network due to increased pressure.

9. Diagram of a gas network connected to compressed gas cylinders

Created on the basis of:
  1. STO GAZPROMREGIONGAZ 1.2-2009 "Graphic display of gas distribution facilities and related communications."
  2. GOST 2.780-96 “Unified system for design documentation. Symbols conditional graphic. Air conditioning conditioners, hydraulic and pneumatic tanks. "
  3. GOST 2.784-96 “Unified system for design documentation. Symbols conditional graphic. Elements of pipelines.
  4. GOST 2.787-71 “Unified system for design documentation. Conditional graphic designations in schemes. Elements, devices and devices of the gas chromatograph system ".
  5. GOST 21.609-83 “System of project documentation for construction. Gas supply. Internal devices. Working drawings".
  6. GOST 21.404-85 “System of project documentation for construction. Automation of technological processes. Designations conventional instruments and automation tools in the schemes ".
  7. GOST 21.206-93 "System of project documentation for construction. Symbols of pipelines ".