|
1. Gas network diagram in a semi-detached house 2. Diameters in the gas supply network to the meters for one apartment with a bathroom on the floor; with two apartments per floor. 3. Dimensions of niches for 1 - 3 gas meters. OKF – finished floor level. 4. Niche for 1 electric and 1 gas meter. 5. Niche for 1 electric and 1 gas meter. |
 |
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6. Placement of inputs utility networks(DIN 18012) with including and locking devices for strong and weak currents, gas, water supply and sewerage. 7. Section of the utility network input room. 8. Floor plan for utility network inputs. |
The following devices do not require connection to gas ducts:
1. All types of gas kitchen stoves and gas refrigerators.
2. Heaters with a capacity of up to 10 liters in rooms with a volume of at least ten times the gas consumption.
3. Tanks for boiling laundry and washing machines with gas consumption up to 2.5 m3/hour in rooms with a volume of at least ten times the gas consumption.
4. Gas heating devices, installed near external walls with exhaust openings in the wall.
In all other cases (water heaters, tanks for boiling clothes and washing machines of larger sizes, heating stoves and so on.) gas appliances must be connected to gas ducts.
The supplying plant is required to install a fuse on the outlet pipe to prevent the formation of condensate and the return of exhaust gases. The automatic hingeless valve of the Diermeyer system with thermal control (Fig. 2) protects the premises from cooling through the flue and from disruption of draft during mixed use of the exhaust duct (for waste gases from appliances operating on gas and solid fuel); In addition, such a valve reduces noise levels. The carbon dioxide content in the air of premises designed for temporary occupancy of people (bathroom, kitchen, etc.) should not exceed 0.4%; in premises for long stays ( common rooms and bedrooms) about 0.15%.
Gas ducts
To a gas duct with a standard section of 135 x 135 mm in brick walls it is allowed to connect no more than three firing points: gas ducts should not be made with a cross-section of more than 200 x 200 mm; If possible, firing points operating on solid fuel and gas should not be connected to the same gas duct. Gas ducts should be located in warm places to avoid the formation of condensation on cold walls. A windproof cap must be installed at the head of the flue. On flat roofs gas ducts must be at least 50 cm above the parapet (Fig. 3 and 4).
Gas consumption: for a 5-minute shower with a water heater with a capacity of 5 liters – 0.25 m3; to heat 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):
| Capacity | Weight when filled, kg | Diameter, mm | Height, mm | Height with valve, mm |
| Small cylinders | 3 | 205 | 320 | 420 |
| 5 | 230 | 400 | 500 | |
| 11 | 300 | 500 | 600 | |
| Large cylinders | 22 | 270 | 1100 | 1200 |
| 33 | 320 | 1200 | 1300 |
Places for installing cylinders: small cylinders can be installed in any room except bedrooms; large cylinders - outside the building in a locked metal cabinet or in a room with a separate external entrance; 1 kg of liquefied gas (3 m3 natural gas) gives about 5000 kcal.
Liquefied gas costs almost 1/3 more than gas from the city network.
Pipe diameters at liquefied gas significantly smaller diameters gas pipes urban network due to increased pressure.
GOST 21.609-2014
INTERSTATE STANDARD
System project documentation for construction
RULES FOR EXECUTION OF WORKING DOCUMENTATION FOR INTERNAL GAS SUPPLY SYSTEMS
System of design documents for construction
Rules for execution of working documents of internal gas systems
OKS 01.100.30
Date of introduction 2015-07-01
Preface
The goals, basic principles and basic procedure for carrying out work on interstate standardization are established by GOST 1.0-92 "Interstate standardization system. Basic provisions" and GOST 1.2-2009 "Interstate standardization system. Interstate standards, rules and recommendations for interstate standardization. Rules for development, adoption, application, renewal and cancellation"
Standard information
1 DESIGNED Open joint stock company"Center for methodology of regulation and standardization in construction" (JSC "CNS")
2 INTRODUCED by the Technical Committee for Standardization TC 465 "Construction"
3 ADOPTED by the Interstate Council for Standardization, Metrology and Certification (Protocol N 46-2014 dated December 5, 2014)
The following voted for adoption:
Short name of the country according to MK (ISO 3166) 004-97 | Abbreviated name of the body government controlled construction |
|
Ministry of Economy of the Republic of Armenia |
||
Kyrgyzstan | Kyrgyzstandard |
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Rosstandart |
||
Uzbekistan | Uzstandard |
4 By Order of the Federal Agency for Technical Regulation and Metrology dated December 12, 2014 N 2030-st, the interstate standard GOST 21.609-2014 was put into effect as a national standard Russian Federation from July 1, 2015
5 INSTEAD GOST 21.609-83
Information about changes to this standard is published in the annual information index "National Standards", and the text of changes and amendments is published in the monthly information index "National Standards". In case of revision (replacement) or cancellation of this standard, the corresponding notice will be published in the monthly information index "National Standards". Relevant information, notices and texts are also posted in information system for general use - on the official website of the Federal Agency for Technical Regulation and Metrology on the Internet
1 area of use
1 area of use
This standard establishes the composition and rules for the execution of working documentation for internal gas supply systems of buildings and structures for various purposes.
2 Normative references
This standard uses normative references to the following interstate standards:
GOST 2.303-68 Unified system of design documentation. Lines
GOST 2.317-2011 Unified system of design documentation. Axonometric projections
GOST 21.101-97 * System of design documentation for construction. Basic requirements for design and working documentation
_______________
* GOST R 21.1101-2013 is in force on the territory of the Russian Federation.
GOST 21.110-2013 System of design documentation for construction. Specification of equipment, products and materials
GOST 21.114-2013 System of design documentation for construction. Rules for making sketch drawings common types non-standard products
GOST 21.205-93 System of design documentation for construction. Symbols for elements of sanitary systems
GOST 21.206-2012 System of design documentation for construction. Pipeline symbols
GOST 21.208-2013 System of design documentation for construction. Automation technological processes. Symbols of devices and automation equipment in diagrams
GOST 21.501-2011 System of design documentation for construction. Rules for the execution of working documentation of architectural and structural solutions
Note - When using this standard, it is advisable to check the validity of the reference standards in the public information system - on the official website of the Federal Agency for Technical Regulation and Metrology on the Internet or using the annual information index "National Standards", which was published as of January 1 of the current year, and on issues of the monthly information index "National Standards" for this year. If the reference standard is replaced (changed), then when using this standard you should be guided by the replacing (changed) standard. If the reference standard is canceled without replacement, then the provision in which a reference is made to it is applied in the part that does not affect this reference.
3 Terms and definitions
The following terms with corresponding definitions are used in this standard:
3.1 gas supply system: The technological complex of the consumer's gas network, located from the point of connection to the gas distribution network to the gas-using equipment and consisting of external and internal gas pipelines and technical devices on them.
3.2 gas pipeline: Part of a gas distribution system consisting of a pipeline for the transportation of natural or liquefied hydrocarbon gases, excluding structures and devices installed on it.
3.3 internal gas pipeline: A gas pipeline laid inside a building from the inlet gas pipeline to the installation site of gas-using equipment.
3.4 gas-using equipment (installation): Equipment where gas is used as fuel in the technological process.
4 General provisions
4.1 Working documentation of internal gas supply systems is carried out in accordance with the requirements of this standard, GOST 21.101 and other interrelated standards of the Design Documentation System for Construction (SPDS), as well as regulatory documents for the design of networks and gas consumption systems.
4.2 The working documentation for internal gas supply systems (hereinafter referred to as gas supply) includes:
- working drawings intended for construction and installation work (the main set of working drawings of the GSV brand);
- sketch drawings of general types of non-standard products, made in accordance with GOST 21.114;
- specification of equipment, products and materials;
- questionnaires and dimensional drawings (if necessary);
- local estimate(if necessary).
4.3 The main set of working drawings of the GSV brand includes:
- general data on working drawings;
- location drawings (plans and sections, fragments of plans and sections, local species and units) of gas pipelines and gas-using equipment (hereinafter referred to as equipment);
- gas supply (gas consumption) schemes;
- drawings (plans, sections, components and diagrams) of gas-using installations.
It is allowed to include in the main set of working drawings rectangular isometric projections of gas supply systems obtained from an electronic model of the building (structure).
4.4 Gas pipelines and their elements in the drawings are indicated by conventional graphic symbols and (or) simplified images in accordance with GOST 21.206. Gas pipelines on the diagrams are indicated by conventional graphic symbols.
4.5 Alphanumeric designations of gas pipelines are taken according to table A.1 (Appendix A) and indicated on drawings and diagrams in accordance with GOST 21.206. An example of applying alphanumeric designations is shown in Figure 1.
Figure 1. Example of applying alphanumeric designations
Picture 1
4.6 Installations are assigned a designation consisting of the installation number within the system and the designation of the gas pipeline in accordance with 4.5.
Example - 1G1, 2G3
4.7 Gas pipeline risers are marked with a mark consisting of the letter designation “St” and serial number riser within the building (structure).
Example - St1, St2
4.8 When indicating the nominal diameter of reinforcement in drawings and diagrams, the symbol “” is given before the dimensional number.
When indicating the nominal diameter (nominal diameter) of gas pipelines and their elements in drawings and diagrams, the sign “” or the symbol “” is given before the size number in accordance with Figure 2 A, 2V. When indicating the outer diameter and wall thickness, the sign “” is placed before the size number (Figure 2 b, 2G).
Figure 2. Legend
Figure 2
4.9 Graphic designations of elements of gas supply systems (gas-using equipment and fittings) are accepted in accordance with GOST 21.205, taking into account additional conventional graphic designations given in Table B.1 (Appendix B).
4.10 Examples of constructing conventional graphic symbols for system elements are given in Table B.2 (Appendix B) and GOST 21.205 (Appendix A).
Examples of constructing symbols and simplified graphic images of system elements in diagrams performed in axonometric projections, are given in GOST 21.205 (Appendix B).
4.11 Symbols of devices, automation equipment and communication lines are adopted in accordance with GOST 21.208.
4.12 Level marks for structural elements, equipment, gas pipelines, etc. indicated in accordance with GOST 21.101.
4.13 Designations of slopes on sections and diagrams are applied in accordance with GOST 21.101, while the numerical value of the slope is indicated in the form decimal accurate to the third decimal place.
Image name | Scale |
1 Plans and sections of the location of equipment and gas pipelines | |
2 Gas supply (gas consumption) schemes | |
3 Plans and diagrams of small buildings | |
4 Plans, sections and installation diagrams | |
5 Fragments of plans | |
6 Plan nodes | |
7 Nodes of plans and sections of system installations | |
8 Nodes in detail | |
9 System diagram nodes | 1:10; 1:20; 1:50 |
10 Sketch drawings of general types of non-standard products | 1:5; 1:10; 1:20; 1:50 |
5 General information on working drawings
5.1 The general data on the working drawings of the GSV brand, in addition to the information provided in GOST 21.101, includes the main indicators of the gas supply system in Form 1 (except for residential buildings).
Form 1 - Main indicators of the gas supply system (gas consumption)
Note:
1 The characteristics of the gas used are indicated in the “Note” column.
2 The dimensions of the columns of Form 1 can be changed at the discretion of the developer, if necessary.
3 Lines delimiting horizontal lines may not be drawn.
5.2 The list of specifications provided for by GOST 21.101 is not carried out as part of the general data on the working drawings of the GSV brand.
5.3 In general instructions, in addition to the information provided in GOST 21.101, the following is given:
- links to regulations, according to which gas supply systems were calculated;
- characteristics of system installations;
- requirements for the manufacture, installation, testing, painting and insulation of gas pipelines, as well as the conditions for their installation;
- special requirements for gas supply, for example explosion safety and fire safety.
Should not be repeated in general instructions technical requirements, placed on other sheets of the main set of working drawings of the GSV brand, and give a description technical solutions adopted in the working drawings.
6 System drawings
6.1 Drawings for the location of equipment and gas pipelines
6.1.1 Drawings for the location of equipment and gas pipelines in buildings and structures are carried out in accordance with GOST 21.101
6.1.2 Images in the drawings (plans and sections, fragments of plans and sections, local views and components) are made on a scale according to 4.15.
6.1.3 On plans, their fragments and assemblies (remote elements), equipment, installations, gas pipelines and other elements of systems are depicted with a thick main line in accordance with GOST 2.303, building structures and technological equipment- a solid thin line.
6.1.4 Equipment and installations for which there are no conditional graphic symbols, are indicated on the plans in the form of simplified graphic images, and gas pipelines and other system elements are indicated by conventional graphic symbols.
6.1.5 On fragments of plans and components, gas pipelines, fittings and other devices are depicted in simplified or conventional graphic symbols, depending on the scale of the drawing and the diameter of the pipeline. Gas pipelines are depicted in a simplified manner by two lines, if in the drawing their diameters on the appropriate scale are 2 mm or more, while fittings and other devices are also depicted in a simplified manner, taking into account their overall dimensions.
Gas pipelines, made with conventional graphic symbols in one line and located one above the other in the same plane, are conventionally depicted on plans as parallel lines.
6.1.6 On plans and sections the following shall be marked and indicated:
- coordination axes of the building (structure) and the distances between them (for residential buildings - the distances between the axes of sections);
- building structures and equipment to which gas and air are supplied and from which combustion products are removed, as well as those affecting the laying of gas pipelines;
- marks of levels of finished floors of floors and main areas;
- dimensional references of gas-using installations and equipment, supports (mounts), inputs (outputs) and risers of gas pipelines to coordination axes or structural elements;
- dimensions of operational passages;
- alphanumeric designations and diameters of gas pipelines;
- position designations (brands) of equipment, installations, supports (mounts) and gas pipeline risers on the shelves of leader lines;
- level marks or height dimensions for installing devices (if necessary).
In addition, the plans indicate the names of the premises in which gas-using equipment is installed, and in the rectangle - the categories of premises for explosion and fire protection and fire danger(except residential buildings). It is allowed to list the names of premises and categories of premises according to explosion and fire hazards in the explication of premises in Form 2 GOST 21.501.
The sections indicate the level marks of the axes of the gas pipelines and the top of the discharge gas pipeline (candles).
On plans and sections of the location of household equipment (for example, gas stoves, water heaters) and gas pipelines in residential buildings, public 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 cross-section) and the location of the ventilation grilles.
6.1.7 Examples of the layout plan for boiler room equipment and gas pipelines are shown in Figure B.1 (Appendix B), and a section - in Figure B.2 (Appendix B).
An example of a plan for the location of household equipment and gas pipelines in a residential building is shown in Figure B.3 (Appendix B).
6.2 Gas supply system diagrams
6.2.1 System diagrams are made in an axonometric oblique frontal isometric projection or in a rectangular isometric projection according to GOST 2.317 without distortion along the axes , , .
6.2.2 Gas pipelines and fittings are indicated on the diagrams by conventional graphic symbols, and equipment for which there is no conventional graphic symbol 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.
6.2.3 The designed gas pipelines, fittings and other devices on the diagrams are depicted with a solid thick main line. Equipment, as well as existing pipelines, fittings and other devices, are depicted as a solid thin line.
6.2.4 If gas pipelines are long and/or have a complex arrangement, it is allowed to depict them with a break in the form of a dotted line. Places of gas pipeline ruptures are indicated in lowercase letters (Figure 3).
Figure 3. Places of gas pipeline ruptures are indicated in lowercase letters
Figure 3
6.2.6* The following is indicated on the diagrams:
_______________
- gas pipeline risers and their designations;
- gas pipeline entries indicating the diameters and level marks of the pipeline axes at the places where they intersect with the axes of the external walls of the building (structure);
- gas pipelines and their diameters;
- shut-off and control valves;
- equipment, instrumentation and other system elements. In this case, the letter designations of measured quantities and functional characteristics of devices are accepted in accordance with GOST 21.208;
- embedded structures (selection devices for installation of control and measuring instruments) indicating the designation of the structure and the document. Embedded structures on pipelines and other system elements are indicated by dots with a diameter of 2 mm;
- level marks of gas pipeline axes;
- slopes of gas pipelines (for wet and liquefied hydrocarbon gas);
- dimensions of horizontal sections of gas pipelines in the presence of breaks.
6.2.8* On the sheet where the diagram is depicted, if necessary, the nodes (reference elements) of the diagram and text explanations are given.
_______________
*Numbering corresponds to the original. - Database manufacturer's note.
On the circuit nodes for shut-off and control valves on the shelf, leader lines indicate the diameter of the valve and under the shelf - the designation of the valve (according to the catalog).
It is allowed to give the diameters and designations of shut-off and control valves in the same way on system diagrams.
6.2.9 In the main inscription and above the diagram, the name of the scheme is indicated in full: “Gas supply diagram”.
6.2.10 An example of a gas supply diagram for a boiler room is shown in Figure D.1 (Appendix D), a gas supply diagram for a residential building is shown in Figure D.2 (Appendix D).
7 Drawings of gas-using installations
7.1 Drawings (plans, sections and diagrams) of gas-using installations should be made if the installation has two or more components(elements of the installation), the need to demonstrate methods of fastening the components of the installation to each other or to supporting structures, lack of standard installation drawings or manufacturer's installation drawings. In other cases, installation drawings are not performed.
7.2 On plans and sections of installations, elements of installations are depicted in a simplified manner. If it is necessary to show methods of fastening the components of an installation or connecting them to each other, the corresponding elements are depicted in detail, as a rule, on the nodes of plans and sections of installations.
7.3 The rules for depicting equipment, pipelines, fittings and other devices on plans, sections and units of installations are taken according to 6.1.2-6.1.5, on installation diagrams - according to 6.2.1-6.2.3.
7.3* The rules for depicting equipment, pipelines, fittings and other devices on plans, sections and units of installations are taken according to 6.1.2-6.1.5, on installation diagrams - according to 6.2.1-6.2.3.
_______________
*Numbering corresponds to the original. - Database manufacturer's note.
7.4 Elements of installations are assigned positional designations, consisting of the designation of the installation according to 4.6 and the serial number of the element within the installation.
Example - 1G1.1, 1G1.2, 2G3.1, 2G3.2
7.5 On plans and sections of installations the following shall be marked and indicated:
- coordination axes of the building (structure) and the distances between them;
- marks of clean floors of floors (platforms);
- dimensional references of installations to coordination axes or to structural elements of a building (structure);
- main dimensions and level marks of installation elements;
- alphanumeric designations of gas pipelines (see 4.5);
- diameters of gas pipelines;
- positional designations of equipment, fittings, embedded structures and other devices.
On plans and sections of installations, in addition to installation elements, building structures are indicated.
7.6 The installation diagram is not drawn to scale; the actual spatial arrangement of equipment and gas pipelines is taken into account approximately.
The diagram shows and indicates:
- equipment, gas pipelines, fittings and other devices;
- instrumentation (if necessary);
- alphanumeric designations of gas pipelines, as a rule, in breaks in gas pipeline lines;
- diameters of gas pipelines;
- position designations of equipment, fittings, embedded structures and other devices;
- direction of flow of the transported medium.
7.7 If necessary, technical requirements for installation of installations are shown on the installation drawings.
7.8 For the installation drawings, a specification is drawn up in Form 7 GOST 21.101, which, as a rule, is placed on the sheet where the installation plans are shown. It is allowed to carry out the specification on separate sheets as subsequent sheets of drawings.
7.9 The specifications for installation drawings include equipment, installation structures, fittings, embedded structures and other devices, as well as gas pipelines for each diameter.
The specification does not include gas pipeline elements, the nomenclature and quantity of which are determined according to current technological and production standards (bends, reducers, tees, crosses, flanges, gaskets, bolts, nuts, washers).
7.10 In the column "Pos." indicate the positional designations of installation elements in accordance with 7.4 sequentially for each installation. For gas pipelines, do not fill out the column.
In the “Name” column, write down the letter for each installation. o-numeric designation according to 4.6 in the form of a heading and underline.
7.11 In the specification, installation elements are written into groups in the following sequence:
- equipment;
- fittings;
- other elements of installations;
- embedded structures;
- gas pipelines for each diameter.
7.12 In the main inscription, the name and alphanumeric designations of installations (see 4.6) are indicated in full.
Example - Installations 1G1, 2G3
7.13 Examples of the installation plan and section are shown in Figures E.1-E.3 (Appendix E).
An example of the installation diagram is shown in Figure E.1 (Appendix E).
8 Specification of equipment, products and materials
8.1 The specification of equipment, products and materials (hereinafter referred to as the specification) is carried out and designated in accordance with GOST 21.110, taking into account the requirements of this standard.
8.2 If industrial building(structure) there are attached or built-in parts in which auxiliary premises are located, then the specification is drawn up in parts:
- production part;
- auxiliary part.
If a residential building has attached or built-in parts to accommodate enterprises and public institutions, then the specification is also drawn up in parts:
- residential part;
- auxiliary part.
The name of each part is written as a heading in the column “Name and technical specifications" and emphasize.
8.3 Elements of systems (equipment, products) and materials in the specification or parts thereof are recorded in groups in the following sequence:
- equipment;
- pipeline accessories;
- other elements of systems (including supports and fastenings of gas pipelines);
- embedded structures (selection devices for installation of instrumentation);
- gas pipelines;
- materials.
Within each group, system elements are recorded in ascending order of their main parameters (for example: type, brand, diameter, section).
Gas pipelines in the specification sections are recorded for each diameter.
Elements of installations included in the specifications for installation drawings are also recorded in the corresponding specification groups.
Elements of gas pipelines, the nomenclature and quantity of which are determined according to current technological and production standards, are not included in the specification. Such elements may include bends, reducers, flanges, gaskets, bolts, nuts, washers, etc.
8.4 The following units of measurement are accepted in the Specifications:
- equipment (installations), supports (fastenings) of gas pipelines, embedded structures (selection devices for installing instrumentation) and other elements - pcs.;
- gas pipelines - m;
- insulating materials - m;
- coating and protection materials - m;
- other materials - kg.
9 Questionnaires and dimensional drawings
9.1 Questionnaires and dimensional drawings are made in accordance with the data of equipment suppliers and are completed in the form of a separate issue called “Questionnaires”.
The release "Questionnaires" is assigned an independent designation, consisting of the designation of the main set of working drawings of the GSV brand and through the code point "OL". The designation is indicated on the title page of the issue questionnaires.
Example - 2345-11-GSV.OL
9.2 If there are two or more questionnaires (dimensional drawings), then after the title page of the questionnaire the content is placed, which is carried out in accordance with GOST 21.101. The content is assigned a designation consisting of the designation of the release of questionnaires and, through a hyphen, the code “C”.
Example - 2345-11-GSV.OL-S
9.3 The name of the questionnaire (dimensional drawing) indicates its designation or serial number within the issue.
9.4 Changes to questionnaires (dimensional drawings) are made in accordance with GOST 21.101, taking into account the additional requirements of this standard.
Changes to questionnaires (dimensional drawings) are made independently within each questionnaire (dimensional drawing).
Information about changes made to the questionnaires (dimensional drawings) is given in the “Note” column of the contents of the questionnaire release.
9.5 The release of questionnaires is recorded in the “Attached Documents” section of the list of reference and attached documents, which is included in the general data on the working drawings of the main set of the GSV brand.
Appendix A (mandatory). Alphanumeric designations of gas pipelines
Appendix A
(required)
Table A.1
Name | Alphanumeric designation |
1 Gas pipeline: | |
a) general designation | |
b) low pressure up to 0.005 MPa | |
c) average pressure St. 0.005 to 0.3 MPa incl. | |
G) high pressure St. 0.3 to 0.6 MPa incl. | |
e) high pressure St. 0.6 to 1.2 MPa incl. | |
2 Purge gas pipeline | |
3 Vacuum pipeline | |
4 Gas pipeline (pipeline) safety | |
Note - If necessary, the Latin letter “G” may be used in the alphanumeric designation of gas pipelines. |
|
Appendix B (recommended). Conventional graphic symbols of gas-using equipment and fittings
Table B.1 - Graphic symbols of gas-using equipment and fittings
Name | Designation |
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1 Household two-burner gas stove | ||
2 Household four-burner gas stove | ||
3 Household gas heating device | ||
4 Heating and cooking stove | ||
5 Gas fireplace | ||
6 Gas air heater | ||
7 Gas meter | ||
8 Thermal shut-off valve | ||
9 Gas sensor (signaling device) | Name | Designation |
Pressure regulator | ||
Solenoid valve | ||
Appendix B (for reference). Examples of drawings for the location of equipment and gas pipelines
Appendix B
(informative)
Figure B.1 - Example of a plan for the location of equipment and gas pipelines of a boiler room
Cut 1-1
Figure B.2 - Example of a section for a boiler room
Figure B.3 - Example of a plan for the location of household equipment and gas pipelines in a residential building
Appendix D (for reference). Examples of gas supply schemes
Appendix D
(informative)
Figure D.1 - Boiler room gas supply diagram
Figure D.2 - Gas supply diagram for a residential building
Appendix D (for reference). Examples of the plan and section of a gas control unit (GRU)
Appendix D
(informative)
Figure D.1 - Example of plan implementation
Figure D.2 - Example of a cut
Figure D.3 - Example of a node
Appendix E (informative). Example of installation diagram
Appendix E
(informative)
Figure E.1 - Example of installation diagram
UDC 691:002:006.354 OKS 01.100.30
Key words: System of design documentation for construction, implementation rules, working documentation, internal systems gas supply (gas consumption)
__________________________________________________________________________
Electronic document text
prepared by Kodeks JSC and verified against:
official publication
M.: Standartinform, 2015
Working drawings
GOST
21.609-83
Resolution State Committee USSR Construction Affairs dated August 17, 1983 No. 203, the introduction date is set
from 01/01/84
This standard establishes the rules for drawing up working drawings of internal gas supply devices* of buildings and structures of all sectors of the industrial economy.
* Inside nnie devices gas supplies are hereinafter referred to as gas supplies.
1. GENERAL PROVISIONS
drawings (plans, sections, views and diagrams) gas installations;
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(0,05 kgf/cm 2) |
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c) average pressure is more |
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5 kPa (0.05 kgf/cm 2) |
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2. Gas pipeline purge |
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3. Pipeline in a rarefied state tion |
In the case when on the shelf leader lines indicate the letter nn o-numeric designation of the gas pipeline, its diameter and wall thickness indicate under the shelf leader lines.
1.5. Gas pipeline risers are designated by a mark consisting of a letter designation "St" and, separated by a hyphen, the serial number of the riser within the building (structure), for example St-1, St-2.
1.6. Conventional graphic images of valves (shut-off, control and safety) and equipment are accepted according to state standards, taking into account additional images given in.
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Name |
Image |
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1. Gas meter |
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2. Household two-burner gas stove |
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3. Household four-burner gas stove |
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4. Household gas heating device |
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5. Heating and cooking stove |
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6. Gas fireplace |
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7. Pressure regulator |
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8. Safety stop valve |
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9. Control knob |
2. GENERAL DATA ON WORKING DRAWINGS
2.1. The general data of the main set of working drawings of the GSV brand, in addition to the data provided, includes:
Main indicators according to the working drawings of the GSV brand
_________
* The characteristics of the gas used are indicated in the note.
3. GAS PIPELINE LAYOUT DRAWINGS
AND EQUIPMENT
3.1. Drawings for the location of gas pipelines and equipment are carried out according to -79, taking into account the requirements of this standard.
3.2. Plans, sections and views
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 views - on a scale of 1:10 - 1:100.
For small buildings or structures, when the execution of fragments is impractical, plans, sections and views may be performed on the scale established for fragments.
3.2.2. Gas pipelines located above each other are conventionally depicted on plans as parallel lines.
3.2.3. Gas pipelines, equipment and fittings on plans, sections and views are indicated by conventional graphic images, and equipment for which there are no conventional graphic images is indicated by simplified graphic images.
Gas pipelines with a diameter of 100 mm or more are depicted in fragments and assemblies by two lines.
3.2.4. On plans, sections and views indicate: the coordination axes of the building (structure) and the distances between them (for residential buildings - the distance between the axes of sections);
building structures and equipment to which gas-air is supplied and from which combustion products are removed. Building construction and equipment is indicated by solid thin lines;
marks of finished floor levels and main areas;
dimensional references of gas installations and equipment, inputs (outputs) and risers of gas pipelines to coordination axes or elements of building structures;
dimensions of operational passages;
level marks or height dimensions for installing devices (if necessary).
The plans, in addition, indicate the names of premises (types of premises for residential buildings) and the category of production facilities for explosion, explosion and fire hazards (in a rectangle of size 5 ´ 8 mm), and on the sections and views - the level marks of the axes of the gas pipelines and the top of the discharge gas pipeline (candles).
It is allowed to list the names of premises and the category of production facilities for explosion, explosion and fire hazards in the explication of premises in form 2-80.
4. GAS SUPPLY SCHEME
For residential and public buildings, instead of a graphical image of the connected equipment, it is allowed to indicate its name.
Crap. 1
Crap. 2
Example of registration of cx is given on
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GAS SUPPLY NETWORKS. LEGEND
Legend gas equipment. Explanations of the accepted terminology. Color of pipelines on drawings. Diameters of supply pipelines and gas flow rates for different devices. Gas ducts. Technical specifications for liquefied gas. Installation of gas ducts.
| 1. Crossing gas network lines when open wiring 2. Hidden wiring 3. Changing the diameters of gas network pipes 4. Air duct 5. Pulse pipeline 6. Grounding 7. Gas hose 8. Ceiling lamp indicating the number of horns 9. Wall Light stationary 10. Mobile wall lamp 11. Gas outlet pipe 12. Gas duct 13. Gas stove with three burners 14. Gas stove with oven 15. Refrigerator 16. Gas heating stove 17. Instantaneous water heater 18. DHW cylinder 19. Installation of the device in an opening with a seal 20. Installation of the device in an opening with a gap 21. Water bag, water tank 22. Wall-mounted gas heating device 23. Gas meter |
Explanations of the accepted terminology:
gas appliances devices that do not require connection to gas ducts are named;
gas firing points are devices that are connected to gas ducts;
the indications “before the meter” and “behind the meter” correspond to the direction of gas flow in the network.
Gas consumption: for every 1 m3 of air volume in a heated room for heating season(September - May) with long-term combustion (in residential buildings) 18 - 25 m3 of gas, with periodic combustion (in retail premises) - 10 - 15 m3 of gas.
Color of pipelines on the drawings: gas pipelines - yellow, pipelines cold water– light blue, pipelines hot water- red.
Diameters of supply pipelines and gas flow rates for different devices:
1. Gas network diagram in a semi-detached house
2. Diameters in the gas supply network to the meters for one apartment with a bathroom on the floor; with two apartments per floor.
3. Dimensions of niches for 1 - 3 gas meters. OKF – finished 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 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 ten times the gas consumption.
3. Tanks for boiling clothes and washing machines with gas consumption up to 2.5 m3/hour in rooms with a volume of at least ten times the gas consumption.
4. Gas heating appliances installed near external walls with exhaust openings in the wall.
In all other cases (hot water heaters, tanks for boiling clothes and larger washing machines, heating stoves, etc.), gas appliances must be connected to gas ducts.
The supplying plant is required to install a fuse on the outlet pipe to prevent the formation of condensate and the return of exhaust gases. The automatic hingeless valve of the Diermeyer system with thermal control (Fig. 2) protects the premises from cooling through the flue and from disruption of draft during mixed use of the exhaust duct (for waste gases from appliances operating on gas and solid fuel); In addition, such a valve reduces noise levels. The carbon dioxide content in the air of premises designed for temporary occupancy of people (bathroom, kitchen, etc.) should not exceed 0.4%; in premises for long stays (dormitories and bedrooms) about 0.15%.
Gas ducts
It is allowed to connect no more than three firing points to a gas duct with a standard cross-section of 135 x 135 mm in brick walls: gas ducts with a cross-section of more than 200 x 200 mm should not be made; If possible, firing points operating on solid fuel and gas should not be connected to the same gas duct. Gas ducts should be located in warm places to avoid the formation of condensation on cold walls. A windproof cap must be installed at the head of the flue. On flat roofs, gas ducts must be at least 50 cm higher than the parapet (Fig. 3 and 4).
Gas consumption: for a 5-minute shower with a water heater with a capacity of 5 liters – 0.25 m3; to heat the room for 15 minutes – 0.25 m3.
Liquefied gas (non-toxic gases - propane, butane, etc.) is used for gas supply in remote areas.
Technical specifications for liquefied gas (TRF 1969):
Places for installing cylinders: small cylinders can be installed in any room except bedrooms; large cylinders - outside the building in a locked metal cabinet or in a room with a separate external entrance; 1 kg of liquefied gas (3 m3 of natural gas) gives about 5000 kcal.
Liquefied gas costs almost 1/3 more than gas from the city network.
The diameters of pipes for liquefied gas are significantly smaller than the diameters of gas pipes in the city network due to increased pressure.
9. Diagram of a gas network connected to compressed gas cylinders
Created based on:
1. STO GAZPROMREGIONGAZ 1.2-2009 “Graphic display of gas distribution network facilities and related communications.”
2. GOST 2.780-96 “Unified system of design documentation. Symbols are conventional graphic. Working environment conditioners, hydraulic and pneumatic tanks.”
3. GOST 2.784-96 “Unified system of design documentation. Symbols are conventional graphic. Pipeline elements."
4. GOST 2.787-71 “Unified system of design documentation. Conditional graphic designations in schemes. Elements, instruments and devices gas system chromatographs."
5. GOST 21.609-83 “System of design documentation for construction. Gas supply. Internal devices. Working drawings".
6. GOST 21.404-85 “System of design documentation for construction. Automation of technological processes. Symbols of devices and automation equipment in diagrams.”
7. GOST 21.206-93 “System of design documentation for construction. Symbols of pipelines".
When preparing construction drawings, alphanumeric gas pipeline designations applied to them should be marked in accordance with the data given in GOST 21.609–83.
This standard defines both the composition of working drawings of gas supply systems for buildings and structures of all sectors of the country's national economy and its industry, as well as the rules that must be strictly and strictly adhered to when preparing this technical documentation.
Working drawings of gas supplyWorkers blueprints systems gas supply must be carried out in full compliance with all the requirements set out in the above-mentioned state standard, as well as other standards relating to construction documentation. In addition, they must fully comply with the standards that are adopted and are in force today regarding the design of gas supply systems.
Working drawings systems gas supply should include:
Common data;
Drawings, sections, views and plans for the location of the gas pipelines themselves, gas equipment, gas instrumentation (control and measuring instruments);
Schemes of gas supply systems;
Sketch drawings and drawings of general types of non-standard structures and devices of gas supply systems;
Drawings, sections, views, diagrams and plans of gas supply installations.
Main set of working drawings of the brand FGP must be supplemented by documents such as a list of material requirements and equipment specifications. They must be carried out in accordance with the requirements GOST 21.109–80.
On technical drawings, to indicate gas pipelines, it is necessary to use graphic images that are provided GOST 21.106–78.
The diameter of the gas pipeline and the thickness of its wall are indicated on the shelf of the extension line.
For those gas pipelines that are built from steel water and gas pipes, parameters such as wall thickness and diameter of its nominal bore are indicated.
For those gas pipelines that are made of electric-welded steel and other pipes, parameters such as wall thickness and outer diameter are indicated.
In such cases, when the designation of a gas pipeline consisting of letters and numbers is indicated on the shelf of the extension line, parameters such as its diameter and wall thickness are placed under it.
To designate gas pipeline risers, a brand is used, which consists of the letter combination “St” and the serial number of the designed riser within the building, indicated by a hyphen, for example: St-2, St-4.
Gaseous state of matterThe gaseous state is one of three states of aggregation. Its main characteristic is that the particles that make up the substance (atoms, molecules or ions) are very close to each other. weak connection and are very mobile. They move almost constantly, often colliding with each other, and this movement is disordered, chaotic, free. Particles often change the direction of their movement.
A gas is often defined as a substance whose temperature is equal to or above a certain critical temperature, at which it does not compress and does not transform into a liquid state of aggregation. This is the difference between gas and steam, which consists of tiny particles of liquid.
Vapor is a state of matter in which it can pass into either a liquid or a solid state.
Just like liquids, gases resist deformation and have fluidity. However, they do not have any fixed volume, trying to fill the entire volume that is available to them. In addition, unlike liquids, gases do not form a free surface.
