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INTERSTATE COUNCIL FOR STANDARDIZATION, METROLOGY AND CERTIFICATION
INTERSTATE COUNCIL FOR STANDARDIZATION, METROLOGY AND CERTIFICATION
INTERSTATE
STANDARD
SYMBOLS OF ELEMENTS OF PIPELINE SYSTEMS OF BUILDINGS AND STRUCTURES
(EN 12792:2003, NEQ)
Official edition
SSH1LTTM|fP[M
GOST 21.205-2016
Foreword
The goals, basic principles and basic procedure for carrying out work on interstate standardization are established by GOST 1.0-2015 “Interstate standardization system. Basic Provisions” and GOST 1.2-2015 “Interstate Standardization System. Interstate standards. rules and recommendations for interstate standardization. Rules for the development, adoption, updating and cancellation "
About the standard
1 DESIGNED joint stock company"Center for Technical and Estimated Rationing 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* dated August 31, 2016 No. 90-P)
4 Order federal agency on technical regulation and metrology dated November 2, 2016 Ns 1567-st, the interstate standard GOST 21.205-2016 was put into effect for adoption as a national standard Russian Federation from April 1, 2017
5 This standard corresponds to the European standard and the US national standard:
EN 12792:2003 Ventilation in buildings. Terms and graphical symbols "(" Ventilation for buildings. Symbols, terminology and graphical symbols ". NEQ) e parts of the symbols of the elements of ventilation and air conditioning systems used in the diagrams:
ANSI / ISA-5.1-2009 "Instrumentation Symbols and Identification". NEO) regarding the symbols of valves for the type of actuator and valve control
6 INTRODUCED TO REPLACE GOST 21.205-93
Information about changes to this standard is published in the annual information index "National Standards", and the text of changes and amendments - in the monthly information index "National Standards". In case of revision (replacement) or cancellation of this standard, a corresponding notice will be published in the monthly information index "National Standards". Relevant information, notification and texts are also posted in the public information system - on the official website of the Federal Agency for Technical Regulation and Metrology and the Internet ()
© Stamdartinform. 2016
In the Russian Federation, this standard cannot be fully or partially reproduced. replicated and distributed as an official publication without the permission of the Federal Agency for Technical Regulation and Metrology
GOST 21.205-2016
1 area of use............................................... ..................one
3 Conventional graphic designations of system elements ..............................................1
4 Alphanumeric designations of pipelines....................................................15
GOST 21.205-2016
INTERSTATE STANDARD
System project documentation for construction
SYMBOLS OF PIPELINE SYSTEM ELEMENTS
BUILDINGS AND FACILITIES
System of design documents for construction.
Symbots of elements of pipeline systems of buildings and structures
Introduction date - 2017-04-01
1 area of use
This standard establishes the basic graphic symbols for elements of engineering and technical support systems (water supply, sewerage, heating, ventilation, air conditioning, gas supply), thermal mechanical and other pipeline systems, as well as alphanumeric designations of pipelines of these systems in drawings and diagrams when designing buildings and structures for various purposes.
8 of this standard, normative references to the following interstate standards are used:
GOST 2.782-96 Unified system for design documentation. Conditional graphic designations. Hydraulic and pneumatic machines
GOST 21.206-2012 System of design documentation for construction. Symbols of pipelines
GOST 21.208-2013 System of design documentation for construction. Automation of technological processes. Conventional designations of devices and automation equipment in diagrams
Note - When using this standard, it is advisable to check the validity of reference standards in the public information system - on the official website of the Federal Agency for Technical Regulation and Metrology on the Internet or according to the annual information index "National Standards", which was published as of January 1 of the current year, and according to the corresponding monthly information signs published in the current year. If the reference standard is replaced (modified), then when using this standard, you should be guided by the replacing (modified) standard. If the referenced standard is canceled without replacement, the provision in which the reference to it is given applies to the extent that this reference is not affected.
3 Symbols for system elements
3.1 Pipelines and their elements in the drawings and diagrams are indicated by conventional graphic symbols and simplified images in accordance with GOST 21.206.
3.2 The dimensions of the conventional graphic symbols of the elements of the systems in the drawings and diagrams are taken without respect to scale.
The graphical conventions do not show the actual construction of the elements.
3.3 8 schemes performed in axonometric projection, the elements of the systems may be depicted in a simplified way in the form of contour outlines.
Official edition
GOST 21.205-2016
3.4 Symbols of devices, automation equipment and communication lines, as well as letter designations of measured quantities and functional features of devices in diagrams, are adopted in accordance with GOST 21.208.
3.5 Symbols of general-purpose pipeline elements used in the diagrams are given in Table 1.
Table 1
Name |
Symbol |
2 Heater | |
3 Cooler | |
4 Cooler and heater (thermostat) | |
5 Heat exchanger | |
6 Air dryer | |
7 Humidifier | |
8 Steam trap (steam pot) | |
9 Choice device "for the installation of a control and measuring device | |
* The designation is shown on the pipeline. Note - The symbols given in paragraphs 1-8 of Table 1 are not used in the diagrams of ventilation and air conditioning systems. |
3.6 Symbols for tanks and pumps in the diagrams are given in Table 2.
table 2
GOST 21.205-2016
End of table 2
3.7 Conditional graphic designations of elements of internal water supply and sewerage systems are given in table 3.
Table 3
GOST 21.205-2016
Table 3 continued
Name |
Conditionally" notation |
|
on top views and not plans |
in frontal views and sbosu. on cuts and diagrams |
|
8 foot bath | ||
9 shower tray | ||
12 Floor bowl | ||
13 Oiccyap wall | ||
14 Outdoor urinal | ||
15 Hospital drain | ||
17 Funnel drain | ||
1B Internal drain funnel | ||
19 Shower net | ||
20 drinking fountain | ||
21 Soda machine |
GOST 21.205-2016
End of table 3
3.8 Symbols of pipelines and their elements are given in Table 4.
Table 4
Name |
Symbol |
1 Section of pipeline isolated | |
2 Piping in a pipe (case) | |
3 Piping in the stuffing box | |
4 Siphon (water seal)* | |
5 Compensator*: | |
a) general designation | |
b) U-shaped | |
c) Z-shaped | |
d) bellows | |
e) stuffing box (telescopic) | |
6 Insert": | |
a) depreciation | |
b) soundproof | |
c) electrically insulating | |
7 Place of resistance in the pipeline (throttle washer, flow meter orifice) |
GOST 21.205-2016
End of table 4
3.9 Symbols for the direction of flow of liquid, gas, control, drive elements used in the diagrams are given in Table 5.
Table 5
GOST 21.205-2016
End of table 5
3.10 Symbols of the main pipeline fittings (devices) are given in Table 6.
Table b
GOST 21.205-2016
Table 6 continued | |
Best regards |
Symbol |
5 Check valve: a) straight | |
6) angular NOTE The flow of fluid through the valve must be from the white triangle to the black one. | |
6 Safety valve: a) a checkpoint b) corner | |
7 Throttle valve | |
8 Pressure reducing valve Note - The top of the triangle should be directed towards the increased pressure. | |
9 Thermoregulation valve: a) a checkpoint b) mixing | |
10 Valve (general designation) | |
11 Pinch valve | |
12 Butterfly valve | |
13 Plug valve: a) through passage | |
b) corner | |
14 Three-way plug valve |
GOST 21.205-2016
End of table 6
Name |
Symbol |
15 Four-way valve | |
16 ball valve | |
17 Three-way ball valve | |
18 Automatic air vent | |
19 Air vent manual radiator |
Xk> nx> |
20 Water tap | |
21 Lissuer crane | |
22 Crane (valve) fire | |
23 Watering faucet | |
24 Double adjustment valve | |
25 Mixer: | |
a) general designation | |
b) with swivel filling | |
c) with a shower net |
|
d) for a bidet | |
26 Water meter (water meter) | |
27 Flow meter, general designation |
GOST 21.205-2016
3.11 Additional symbols of fittings according to the type of drive and regulation are given in table 7.
Table 7
3.12 Additional symbols of fittings by type of action in the event of a power failure* are given in Table 8.
table in
GOST 21.205-2016
3.13 Conventional graphic designations of elements of heating systems are given in Table 9.
Table 9
* In the designation on the views, sections and diagrams indicate graphically the actual number of pipes. "Conditional graphic designation is used only in diagrams.
3.14 Conditional graphic designations of elements of ventilation and air conditioning systems used in the diagrams are given in tables 10-13. Symbols given in tables 10-12. basically correspond to (1].
Table 10 - Symbols for air distribution devices
Table 11 - Symbols of air ducts and their elements
GOST 21.205-2016
Table 11 continued
Name |
Symbol |
3 Sheet air duct with acoustic insulation: a) outdoor b) internal |
LPLSHSHLLLD |
4 Flexible duct | |
5 Elbow (outlet) 90*. 45". 135* etc. | |
6 Branch, flow split | |
7 Transition abrupt | |
8 Smooth transition | |
9 Damper (valve) | |
10 Airtight damper | |
11 Flow switch | |
12 check valve | |
13 Pressure relief valve | |
14 Smoke damper | |
15 Fire damper | |
16 Fire and smoke damper |
GOST 21.205-2016
End of table 11
Name |
Symbol |
17 Control valve with constant flow | |
18 Variable flow control valve | |
20 Fan (general designation) | |
21 Radial fan | |
22 Axial fan | |
23 Air filter | |
24 Louver damper | |
25 Grille (blinds) | |
26 Flow rectifier | |
27 Silencer | |
28 Gate valve (gate) | |
29 Hatch for measuring air parameters and "or cleaning air ducts | |
30 Deflector | |
GOST 21.205-2016
Table 12 - Symbols of devices for cleaning (preparation) of air
Table 13 - Simplified images of ducts and channels
GOST 21.205-2016
4 Alphanumeric designations of pipelines
4.1 The alphanumeric designation of the pipeline consists of a capital letter characterizing the type of engineering system (network) and numbers characterizing the purpose of the pipeline and / or its parameters.
Alphanumeric designations of pipelines in the drawings and diagrams are applied in accordance with GOST 21.206.
Letter designations of internal engineering systems of buildings and structures and external engineering networks included in the alphanumeric designations of pipelines of these systems and networks are taken according to table 14.
Table 14
4.2 Alphanumeric designations of pipelines of external networks and internal water supply systems are given in table 15.
Table 15
Name |
Bukeino-ifeoo designation |
1 Domestic and drinking water supply | |
2 Fire water pipeline | |
3 Industrial plumbing: | |
General designation | |
Recycled water supply | |
Recycled water, reverse | |
Softened water | |
Water from surface sources (river, lake, etc.) | |
Clarified water from surface sources" | |
underground water | |
sea water |
Notes
1 For pipelines of water supply systems with different parameters and properties of water, the following designations are accepted:
From В11 to В19 for the pipelines specified in paragraph 1;
From B21 to B29 for pipelines specified in paragraph 2;
From B31 to B39 for pipelines specified in point 3.
For pipelines of water supply systems not provided for in Table 15. take designations from B41 to B99.
2 In the case when the domestic drinking or industrial water supply is at the same time fire-fighting, it is assigned the designation of the domestic drinking or industrial water supply. and the purpose is explained in the drawings or diagrams.
GOST 21.205-2016
4.3 Alphanumeric designations of pipelines of external networks and internal sewerage systems are given in table 16.
Table 16
Name |
Alphanumeric designation |
1 Sewerage household | |
2 Rain sewer | |
3 Industrial sewerage: | |
General designation | |
Mechanically contaminated water | |
Chemically polluted water | |
acidic waters | |
Alkaline Vedas | |
Acid-alkaline waters | |
Notes 1 For sewerage (water disposal) systems with different parameters and properties of water, the following designations are used: From K11 to K19 for pipelines of sewage systems specified in paragraph 2: From K21 to K29 for pipelines of sewage systems specified in paragraph 3: For pipelines of sewerage systems not provided for in Table 16, designations from K41 to K99 are accepted. 2 If it is required to show that the section of the sewerage network is pressure, then the alphanumeric designation is supplemented with a capital letter "H". for example K31N. |
4.4 Alphanumeric designations of heat pipelines (pipelines of hot water, steam and other heat carriers) are given in Table 17.
Table 17
GOST 21.205-2016
End of table 17
Name
Buyaoenio-digital designation
Steam pipeline (steam pipeline)
Condensate pipeline (kochdensatolrovod)
those
Notes
1 For heat pipelines with different parameters of the coolant, the following designations are used:
From T11 to T19 and from T21 to T29 for pipelines specified in paragraph 1;
From T31 to T39 and from T41 to T49 for pipelines specified in paragraph 2;
From T51 to T59 and from T61 to T69 for pipelines specified in paragraph 3;
From T71 to T79 for pipelines specified in paragraph 4;
From T81 to T89 for pipelines specified in paragraph 5.
2 For heat pipelines not provided for in Table 17, designations from T91 to T99 are accepted, regardless of the type of medium being transported and its parameters.
3 If it is required to show that the section of the condensate pipeline is pressure, then the alphanumeric designation is supplemented with a capital letter "H", for example, T8H.
4.5 Alphanumeric designations of refrigeration pipelines in air conditioning systems are given in Table 18.
Table 18
4.6 Alphanumeric designations of air ducts are given in Table 19.
Table 19
4.7 Alphanumeric designations of gas pipelines (natural gas and liquefied hydrocarbon gases) are given in Table 20.
Table 20
GOST 21.205-2016
End of table 20
4.8 If there are several pipelines of the same name (of the same type) in the drawings, each of which needs to be distinguished, they are assigned designations consisting of an alphanumeric designation. given in tables 2-7. with the addition of the serial number of the pipeline, separated by a dot.
Example -B31.1:B31.2
GOST 21.205-2016
(1] EN 12792:2003
Bibliography
ventilation for buildings. Symbols, terminology and graphical symbols. ("Ventilation in buildings. Terms and symbols")
GOST 21.205-2016
UDC 691:002:006.354 MKS 01.100.30
Key words: symbols: elements of pipeline systems: external and internal systems of water supply and sewerage; heating, ventilation and air conditioning systems, gas supply; pipeline accessories; heat carriers; air ducts; tanks: pumps; fans; valves; alphanumeric designations of pipelines
Editor N.V. Terentyeva Technical editor V.I. Prusakova Proofreader S.I. Firsova Computer layout E.E. Krugova
Handed over to the set 11/17/2016. Signed for publication on 12/16/2016. Format 60 "84" / j. Ariel typeface. Successful print. sheet 2.76. Account-ed. sheet. 2.S2. Circulation S7 copy. Order. 3160 Prepared on the basis of the epe"three version provided to the developer!! .
Published and printed by FSUE STANDARTINFORM. 12396S Moscow. Garnet lane.. 4.
Foreword
The goals, basic principles and basic procedure for carrying out work on interstate standardization are established by GOST 1.0-2015 "Interstate standardization system. Basic provisions" and GOST 1.2-2015 "Interstate standardization system. Interstate standards, rules and recommendations for interstate standardization. Rules for the development, adoption, updates and cancellations
About the standard
1 developed by the Joint Stock Company "Center for Technical and Estimated Rationing 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 (Minutes of August 31, 2016 N 90-P)
Short name of the country according to MK (ISO 3166) 004-97 |
Abbreviated name of the national standards body |
|
Belarus Kyrgyzstan |
Ministry of Economy of the Republic of Armenia State Standard of the Republic of Belarus Kyrgyzstandart Rosstandart |
1 area of use
This standard establishes the main conventional graphic symbols for elements of engineering and technical support systems (water supply, sewerage, heating, ventilation, air conditioning, gas supply), thermal mechanical and other pipeline systems, as well as alphanumeric designations of pipelines of these systems in drawings and diagrams when designing buildings and structures for various purposes.
This standard uses normative references to the following interstate standards:
3.2 The dimensions of the conventional graphic symbols of the elements of the systems in the drawings and diagrams are taken without respect to scale.
The graphical conventions do not show the actual construction of the elements.
3.3 In schemes performed in axonometric projection, elements of systems may be depicted in a simplified way in the form of contour outlines.
3.4 Symbols of devices, automation equipment and communication lines, as well as letter designations of measured quantities and functional features of devices in diagrams, are adopted in accordance with GOST 21.208.
3.5 Symbols of general-purpose pipeline elements used in the diagrams are given in Table 1.
Table 1
Name |
Symbol |
||
2 Heater |
|||
3 Cooler |
|||
4 Cooler and heater (thermostat) |
|||
5 Heat exchanger |
|||
6 Air dryer |
|||
7 Humidifier |
|||
8 Steam trap (steam pot) |
|||
a) general designation |
|||
b) U-shaped |
|||
c) Z-shaped |
|||
d) bellows |
|||
e) stuffing box (telescopic) |
|||
a) depreciation |
|||
b) soundproof |
|||
c) electrically insulating |
|||
7 Place of resistance in the pipeline (throttle washer, flow meter orifice) |
|||
8 Support (suspension) of the pipeline: a) motionless b) mobile |
|||
9 Pipe hanger: a) motionless b) guide |
|||
10 Expansion pipe |
|||
11 Revision |
|||
* Designations of elements are allowed to be depicted in accordance with their actual configuration. |
3.9 Symbols for the direction of flow of liquid, gas, regulation, drive elements used in the diagrams are given in Table 5.
Table 5
Name |
Symbol |
|
3 Regulation Note - The direction of the arrow is taken in accordance with GOST 21.208 (table 1). |
||
4 Actuator (drive): |
||
a) general designation |
||
b) manual |
||
c) electromagnetic |
||
d) electric machine |
||
e) single-acting membrane |
||
f) single-acting diaphragm with positioner |
||
g) drive with side manual override |
||
i) double-acting membrane |
||
j) bellows |
||
l) float |
||
m) spring or lever-weight regulating safety valve |
3.10 Symbols of the main pipeline fittings (devices) are given in Table 6.
Table 6
Name |
Symbol |
1 Stop valve: a) a checkpoint b) corner |
|
2 Three-way valve |
|
3 Diaphragm valve (diaphragm) |
|
4 Control valve: |
|
a) a checkpoint |
|
b) corner |
|
c) triple |
|
5 Check valve: a) a checkpoint b) corner NOTE The flow of fluid through the valve must be from the white triangle to the black one. |
|
6 Safety valve: a) a checkpoint b) corner |
|
7 Throttle valve |
|
8 Pressure reducing valve Note - The top of the triangle should be directed towards the increased pressure. |
|
9 Thermostatic valve: a) a checkpoint b) mixing |
|
10 Valve (general designation) |
|
11 Pinch valve |
|
12 Butterfly valve |
|
13 Plug tap: a) a checkpoint b) corner |
|
14 Three-way plug valve |
|
15 Four-way valve |
|
16 ball valve |
|
17 Three-way ball valve |
|
18 Automatic air vent |
|
19 Manual radiator air vent |
|
20 Water tap |
|
21 Urinal tap |
|
22 Crane (valve) fire |
|
23 Watering faucet |
|
24 Double adjustment valve |
|
25 Mixer: a) general designation b) with swivel spout c) with a shower net d) for a bidet |
|
26 Water meter (water meter) |
|
27 Flow meter, general designation |
3.11 Additional symbols of valves by type of drive and regulation are given in Table 7.
Table 7
Description |
Symbol |
1 Pressure regulator "up to yourself". External pressure take-off |
|
2 Pressure regulator "up to yourself". Internal pressure tap |
|
3 Downstream pressure regulator. External pressure take-off |
|
4 Downstream pressure regulator. Internal pressure tap |
|
5 Differential pressure regulator (differential). External pressure taps |
|
6 Differential pressure regulator (differential). Internal pressure taps |
|
7 Level control |
3.12 Additional symbols for fittings by type of action in the event of a power outage are given in Table 8.
Table 8
Description |
Symbol |
1 Valve normally open (NO valve) |
|
2 Valve normally closed (NC valve) |
|
3 Valve with a drive or actuator that, in the absence or interruption of the supply of energy that creates the adjustment force, locks the locking or adjusting element in the last position |
3.13 Conventional graphic designations of elements of heating systems are given in Table 9.
Table 9
Name |
Symbol |
|
top view and plans |
in front or side views, in sections and in diagrams |
|
1 Smooth heating pipe, register of smooth pipes |
||
2 Ribbed heating pipe, ribbed register, heating convector |
||
3 Heating convector built into the floor |
||
4 Heating radiator |
||
5 Ceiling heating device for radiant heating |
||
6 Air heating unit |
||
7 Electric heating device |
||
* In the designation on the views, sections and diagrams indicate graphically the actual number of pipes. ** Conditional graphic designation is used only in diagrams. |
3.14 The conventional graphic designations of the elements of ventilation and air conditioning systems used in the diagrams are given in tables 10 - 13. The symbols given in tables 10 - 12 basically correspond.
Table 10 - Symbols for air distribution devices
Name |
Symbol |
|
1 Supply air distributor |
||
2 Air release device |
Table 11 - Symbols of air ducts and their elements
Name |
Symbol |
||
1 Rigid duct: a) oval b) round c) rectangular |
|||
2 Rigid air duct with thermal insulation a) outdoor b) internal |
|||
3 Rigid air duct with acoustic insulation: a) outdoor b) internal |
|||
4 Flexible duct |
|||
5 Elbow (elbow) 90°, 45°, 135°, etc. |
|||
6 Branch, flow split |
|||
7 Transition abrupt |
|||
8 Smooth transition |
|||
9 Damper (valve) |
|||
10 Airtight damper |
|||
11 Flow switch |
|||
12 check valve |
|||
13 Pressure relief valve |
|||
14 Smoke damper |
|||
15 Fire damper |
|||
16 Fire and smoke damper |
|||
17 Control valve with constant flow |
|||
18 Variable flow control valve |
|||
20 Fan (general designation) |
|||
21 Radial fan |
|||
22 Axial fan |
|||
23 Air filter |
|||
24 Louvre multi-leaf damper |
|||
25 Grille (blinds) |
|||
26 Flow rectifier |
|||
27 Silencer |
|||
28 Gate valve (gate) |
|||
29 Door for measuring air parameters and/or cleaning air ducts |
|||
30 Deflector |
|||
Table 12 - Symbols of devices for cleaning (preparation) of air
Name |
Symbol |
1 Air mixer with constant flow (flow) |
|
2 Air mixer with adjustable flow (flow) |
|
3 Air heater |
|
4 Air cooler |
|
5 Humidifier |
|
6 Mixing chamber |
|
7 Fancoil |
|
8 Ejection closer |
Table 13 - Simplified images of ducts and channels
Name |
Simplified image |
|
on plans and views |
in section |
|
1 Air duct (with simplified graphic image two lines): a) round. Note - For round air ducts with a diameter of up to 500 mm inclusive, it is allowed not to indicate the center line on the system drawings; b) rectangular section |
||
2 Underground channel |
4 Alphanumeric designations of pipelines
4.1 The alphanumeric designation of the pipeline consists of a capital letter characterizing the type of engineering system (network) and numbers characterizing the purpose of the pipeline and / or its parameters.
Alphanumeric designations of pipelines in the drawings and diagrams are applied in accordance with GOST 21.206.
Letter designations of internal engineering systems of buildings and structures and external engineering networks included in the alphanumeric designations of pipelines of these systems and networks are taken according to table 14.
Table 14
Name |
Letter designation |
1 Internal systems and external water supply networks |
|
2 Internal systems and external sewerage networks (water disposal) |
|
3 Internal heating and hot water supply systems, heating networks |
|
4 Refrigeration systems |
|
5 Air supply systems, vacuum networks |
|
6 Gas distribution and consumption networks |
|
* If necessary, the use of the Latin letter "G" in the alphanumeric designation of gas pipelines is allowed. |
4.2 Alphanumeric designations of pipelines of external networks and internal water supply systems are given in table 15.
Table 15
Name |
Alphanumeric designation |
1 Domestic and drinking water supply |
|
2 Fire water pipeline |
|
3 Industrial plumbing |
|
General designation |
|
Recycled water supply |
|
Recycled water, reverse |
|
Softened water |
|
Water from surface sources (river, lake, etc.) |
|
Clarified water from surface sources |
|
underground water |
|
sea water |
|
Notes 1 For pipelines of water supply systems with different parameters and properties of water, the following designations are accepted: From B11 to B19 for pipelines specified in paragraph 1; From B21 to B29 for pipelines specified in paragraph 2; From B31 to B39 for pipelines specified in point 3. For pipelines of water supply systems not provided for in Table 15, designations from B41 to B99 are accepted. 2 In the case when the domestic drinking or industrial water supply is at the same time fire-fighting, it is assigned the designation of the domestic drinking or industrial water supply, and the purpose is explained in the drawings or diagrams. |
4.3 Alphanumeric designations of pipelines of external networks and internal sewerage systems are given in table 16.
Table 16
Name |
Alphanumeric designation |
1 Sewerage household |
|
2 Rain sewer |
|
3 Industrial sewerage: |
|
General designation |
|
Mechanically contaminated water |
|
Chemically polluted water |
|
acidic waters |
|
alkaline water |
|
Acid-alkaline waters |
|
Notes 1 For sewerage (water disposal) systems with different parameters and properties of water, the following designations are used: From K11 to K19 for pipelines of sewage systems specified in paragraph 2; From K21 to K29 for pipelines of sewerage systems specified in paragraph 3; For pipelines of sewerage systems not provided for in Table 16, designations from K41 to K99 are accepted. 2 If it is required to show that the section of the sewerage network is pressure, then the alphanumeric designation is supplemented with a capital letter "H", for example, K31H. |
4.4 Alphanumeric designations of heat pipelines (pipelines of hot water, steam and other heat carriers) are given in Table 17.
Table 17
Name |
Alphanumeric designation |
||
1 Hot water pipeline for heating and ventilation (including air conditioning), as well as common for heating, ventilation, hot water supply and technological processes: |
|||
Server Back |
|||
2 Hot water pipeline for hot water supply: Server circulation 3 Hot water pipeline for technological processes: |
|||
Server Back |
|||
4 Steam pipeline (steam pipeline) |
|||
5 Condensate pipeline (condensate pipeline) |
|||
Notes 1 For heat pipelines with different parameters of the coolant, the following designations are used: From T11 to T19 and from T21 to T29 for the pipelines specified in paragraph 1; From T31 to T39 and from T41 to T49 for pipelines specified in paragraph 2; From T51 to T59 and from T61 to T69 for pipelines specified in paragraph 3; From T71 to T79 for pipelines specified in paragraph 4; From T81 to T89 for pipelines specified in paragraph 5. 2 For heat pipelines not provided for in Table 17, designations from T91 to T99 are accepted, regardless of the type of medium being transported and its parameters. 3 If it is required to show that the section of the condensate pipeline is pressure, then the alphanumeric designation is supplemented with a capital letter "H", for example, T8H. |
4.5 Alphanumeric designations of refrigeration pipelines in air conditioning systems are given in Table 18.
Table 18
Name |
Alphanumeric designation |
1 Coolant supply pipe |
|
2 Coolant return pipe |
|
3 Liquid piping |
|
4 Refrigerant gas piping (hot gas) |
|
5 Gas piping (cold gas) |
|
Note - For pipelines not provided for in Table 18, designations with serial numbering should be adopted in continuation of those indicated in this table. |
4.6 Alphanumeric designations of air ducts are given in Table 19.
Table 19
Name |
Alphanumeric designation |
1 Air intake pipe |
|
2 Compressed air line |
|
3 Vacuum network pipeline (vacuum pipeline) |
|
Note - For air ducts not provided for in Table 19, designations with serial numbering should be adopted in continuation of those indicated in this table. |
4.7 Alphanumeric designations of gas pipelines (natural gas and liquefied hydrocarbon gases) are given in Table 20.
Table 20
Name |
Alphanumeric designation |
||
1 Gas pipeline: Low pressure up to 0.1 MPa |
|||
Medium pressure St. 0.1 to 0.3 MPa incl. |
|||
High pressure St. 0.3 to 0.6 MPa incl. |
|||
High pressure St. 0.6 MPa |
|||
2 Purge gas pipeline |
|||
3 Vacuum pipeline |
|||
4 Gas pipeline (pipeline) safety |
|||
Note - For gas pipelines not provided for in Table 20, designations with serial numbering should be adopted in continuation of those indicated in this table. If you are a user of the Internet version of the GARANT system, you can open this document right now or request it via the Hotline in the system. |
INTERSTATE COUNCIL FOR STANDARDIZATION, METROLOGY AND CERTIFICATION
INTERSTATE COUNCIL FOR STANDARDIZATION. METROLOGY AND CERTIFICATION
INTERSTATE
STANDARD
(EN 12792:2003, NEQ)
Official edition
Moscow Standartimform 201 in
Foreword
The goals, basic principles and basic procedure for carrying out work on interstate standardization are established by GOST 1.0-2015 “Interstate standardization system. Basic Provisions” and GOST 1.2-2015 “Interstate Standardization System. Interstate standards. rules and recommendations for interstate standardization. Rules for development, adoption. updates and cancellations
About the standard
1 DEVELOPED by the Joint Stock Company "Center for Technical and Estimated Rationing 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 (Minutes of August 31, 2016 No. 90-P)
4 By order of the Federal Agency for Technical Regulation and Metrology dated November 2, 2016 No. 1567-st, the interstate standard GOST 21.205-2016 was put into effect for use as the national standard of the Russian Federation from April 1, 2017.
5 This standard corresponds to the European standard and the US national standard:
EN 12792:2003 Ventilation in buildings. Terms and graphic symbols "(" Ventilation for buildings. Symbols, terminology and graphical symbols ". NEQ) in terms of the symbols of the elements of ventilation and air conditioning systems used in the diagrams:
ANSI / ISA-5.1-2009 "Instrumentation Symbols and Identification". NEQ in terms of symbols for valves of the type of actuator and valve control
Information about changes to this standard is published in the annual information index "National Standards", and the text of changes and amendments - in the monthly information index "National Standards". standards." Relevant information, notification and texts are also posted in the public information system - on the official website of the Federal Agency for Technical Regulation and Metrology on the Internet (www.gost.ru)
© Standartinform. 2016
In the Russian Federation, this standard cannot be fully or partially reproduced. replicated and distributed as an official publication without the permission of the Federal Agency for Technical Regulation and Metrology
Table 6 continued | |
Name |
Symbol |
5 Check valve a) straight | |
b) corner Note - The flow of the working medium through the valve must be directed from the white triangle to the black one. | |
6 Safety valve: a) a checkpoint b) corner |
С^З- or -£^|- |
7 Throttle valve | |
8 Pressure reducing valve Note - The top of the triangle should be directed towards the increased pressure. | |
9 Thermostatic valve: a) a checkpoint b) mixing | |
10 Valve (general designation) | |
11 Pinch valve | |
12 Butterfly valve | |
13 Plug valve | |
b) corner | |
14 Three-way plug valve |
Name |
Symbol |
15 Four-way valve | |
16 ball valve | |
17 Three-way ball valve | |
18 Automatic air vent | |
19 Manual radiator air vent |
XH> or -X> |
20 Water tap | |
21 Urinal tap | |
22 Crane (valve) fire | |
23 Watering faucet | |
24 Double adjustment valve | |
25 Mixer | |
a) general designation | |
b) with swivel spout | |
c) with a shower net | |
d) for a bidet | |
26 Water meter (water meter) | |
27 Flow meter, general designation |
3.11 Additional symbols of valves by type of drive and regulation are given in Table 7.
Table 7 |
3.12 Additional symbols of fittings by type of action in the event of a power outage are given in table 8
3.13 Conventional graphic designations of elements of heating systems are given in table 9
Table 9 |
||||||||||||||||||||||||||
|
||||||||||||||||||||||||||
* In the designation on the views, sections and diagrams indicate graphically the actual number of pipes ** Conventional graphic designation is used only in diagrams |
3.14 Conditional graphic designations of elements of ventilation and air conditioning systems used in the diagrams are given in tables 10-13. The conventions given in tables 10-12 basically correspond to .
Name |
Symbol |
||
3 Rigid air duct with acoustic insulation a) outdoor b) internal | |||
4 Flexible duct | |||
5 Elbow (bend) 90’. 45'. 135° etc. | |||
6 Branch, flow split | |||
7 Transition abrupt | |||
8 Smooth transition | |||
9 Damper (valve) | |||
10 Airtight damper | |||
11 Flow switch | |||
12 check valve | |||
13 Pressure relief valve | |||
14 Smoke damper | |||
15 Fire damper | |||
16 Fire and smoke damper |
|
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1 area of use............................................... ..................one 3 Conventional graphic designations of system elements ..............................................1 4 Alphanumeric designations of pipelines....................................................15 INTERSTATE STANDARD System of design documents for construction SYMBOLS OF ELEMENTS OF PIPELINE SYSTEMS OF BUILDINGS AND STRUCTURES System of design documents for construction Symbols of elements of pipeline systems of buildings and structures Introduction date - 2017-414-01 1 area of useThis standard establishes the basic graphic symbols for elements of engineering and technical support systems (water supply, sewerage, heating, ventilation, air conditioning, gas supply), thermal mechanical and other pipeline systems, as well as alphanumeric designations of pipelines of these systems in drawings and diagrams when designing buildings and structures for various purposes. 2 Normative referencesThis standard uses normative references to the following interstate standards: 3.2 The dimensions of the conventional graphic symbols of the elements of the systems in the drawings and diagrams are taken without respect to scale. The graphical conventions do not show the actual construction of the elements. 3.3 In schemes performed in axonometric projection, elements of systems may be depicted in a simplified way in the form of contour outlines. Official edition 3.4 Symbols of devices, automation equipment and communication lines, as well as letter designations of measured quantities and functional features of devices in diagrams, are adopted in accordance with GOST 21 208. 3.5 Symbols of general-purpose pipeline elements used in the diagrams are given in Table 1.
3.6 Symbols of tanks and pumps in the diagrams are given in Table 2 Table 2
3.7 Symbols of elements of internal water supply and sewerage systems are given in table 3
3.10 Symbols of the main pipeline fittings (devices) are given in table 6 |
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Put into effect by order of the Federal Agency for Technical Regulation and Metrology dated November 2, 2016 N 1567-st
Interstate standard GOST 21.205-2016
"SYSTEM OF PROJECT DOCUMENTATION FOR CONSTRUCTION. SYMBOLS OF ELEMENTS OF PIPELINE SYSTEMS OF BUILDINGS AND STRUCTURES"
System of design documents for construction. Symbols of elements of pipeline systems of buildings and structures
Introduced to replace GOST 21.205-93
Foreword
The goals, basic principles and basic procedure for carrying out work on interstate standardization are established by GOST 1.0-2015 "Interstate standardization system. Basic provisions" and GOST 1.2-2015 "Interstate standardization system. Interstate standards, rules and recommendations for interstate standardization. Rules for the development, adoption, updates and cancellations
About the standard
1 developed by the Joint Stock Company "Center for Technical and Estimated Rationing 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 (Minutes of August 31, 2016 N 90-P)
4 By order of the Federal Agency for Technical Regulation and Metrology of November 2, 2016 N 1567-st, the interstate standard GOST 21.205-2016 was put into effect for use as the national standard of the Russian Federation from April 1, 2017.
5 This standard corresponds to the European standard and the US national standard:
EN 12792:2003 "Ventilation for buildings. Symbols, terminology and graphical symbols", NEQ) in terms of symbols for elements of ventilation and air conditioning systems used in diagrams;
ANSI / ISA-5.1-2009 "Instrumentation Symbols and Identification", NEQ, regarding the symbols of valves for the type of actuator and valve control
6 Introduced to replace GOST 21.205-93
1 area of use
This standard establishes the main conventional graphic symbols for elements of engineering and technical support systems (water supply, sewerage, heating, ventilation, air conditioning, gas supply), thermal mechanical and other pipeline systems, as well as alphanumeric designations of pipelines of these systems in drawings and diagrams when designing buildings and structures for various purposes.
This standard uses normative references to the following interstate standards:
GOST 2.782-96 Unified system for design documentation. Conditional graphic designations. Hydraulic and pneumatic machines
GOST 21.206-2012 System of design documentation for construction. Symbols of pipelines
GOST 21.208-2013 System of design documentation for construction. Automation of technological processes. Conventional designations of devices and automation equipment in diagrams
Note - When using this standard, it is advisable to check the validity of reference standards in the public information system - on the official website of the Federal Agency for Technical Regulation and Metrology on the Internet or according to the annual information index "National Standards", which was published as of January 1 of the current year, and according to the corresponding monthly information signs published in the current year. If the reference standard is replaced (modified), then when using this standard, you should be guided by the replacing (modified) standard. If the referenced standard is canceled without replacement, the provision in which the reference to it is given applies to the extent that this reference is not affected.
3 Symbols for system elements
3.1 Pipelines and their elements in the drawings and diagrams are indicated by conventional graphic symbols and simplified images in accordance with GOST 21.206.
3.2 The dimensions of the conventional graphic symbols of the elements of the systems in the drawings and diagrams are taken without respect to scale.
The graphical conventions do not show the actual construction of the elements.
3.3 In schemes performed in axonometric projection, elements of systems may be depicted in a simplified way in the form of contour outlines.
3.4 Symbols of devices, automation equipment and communication lines, as well as letter designations of measured quantities and functional features of devices in diagrams, are adopted in accordance with GOST 21.208.
3.5 Symbols of general-purpose pipeline elements used in the diagrams are given in Table 1.
Table 1
Name |
Symbol |
2 Heater | |
3 Cooler | |
4 Cooler and heater (thermostat) | |
5 Heat exchanger | |
6 Air dryer | |
7 Humidifier | |
8 Steam trap (steam pot) | |
9 Selective device* for installation of control and measuring device | |
* The designation is shown on the pipeline. |
|
Note - The symbols given in paragraphs 1 - 8 of Table 1 are not used in the diagrams of ventilation and air conditioning systems. |
3.6 Symbols for tanks and pumps in the diagrams are given in Table 2.
table 2
Name |
Symbol |
||
a) open to atmospheric pressure | |||
b) closed with pressure above atmospheric | |||
c) closed with pressure below atmospheric | |||
2 Nozzle | |||
3 Pump (general designation) a) out of control | |||
b) adjustable Note - If it is necessary to reflect the principle of operation of the pump, then the designations given in paragraphs 4 - 6 or in GOST 2.782 (table 2) are used. | |||
4 Manual pump | |||
5 Centrifugal pump | |||
6 Jet pump (ejector, injector, elevator) | |||
3.7 Symbols of elements of internal water supply and sewerage systems are given in table 3.
Table 3
Symbol | |||||
Name |
top view and plans | ||||
1 sink | |||||
3 Washbasin | |||||
4 Corner washbasin | |||||
5 Group washbasin Note - The number of "+" signs in the designation must correspond to the actual number of taps. | |||||
6 Washbasin group round | |||||
8 foot bath | |||||
9 shower tray | |||||
12 Floor bowl | |||||
13 Wall-mounted urinal | |||||
14 Outdoor urinal | |||||
15 Hospital drain | |||||
17 Funnel drain | |||||
18 Funnel internal drain | |||||
19 Shower net | |||||
20 drinking fountain | |||||
21 Soda machine | |||||
22 Electric instantaneous water heater | |||||
23 Electric storage water heater | |||||
3.8 Symbols of pipelines and their elements are given in Table 4.
Table 4
Name |
Symbol | |
1 Section of pipeline isolated | ||
2 Piping in a pipe (case) | ||
3 Piping in the stuffing box | ||
4 Siphon (water seal)* | ||
5 Compensator:* | ||
a) general designation | ||
b) U-shaped | ||
c) Z-shaped | ||
d) bellows | ||
e) stuffing box (telescopic) | ||
6 Insert:* | ||
a) depreciation | ||
b) soundproof | ||
c) electrically insulating | ||
7 Place of resistance in the pipeline (throttle washer, flow meter orifice) | ||
8 Support (suspension) of the pipeline: a) motionless b) mobile | ||
9 Pipe hanger: a) motionless b) guide | ||
10 Expansion pipe | ||
11 Revision | ||
* Designations of elements are allowed to be depicted in accordance with their actual configuration. |
3.9 Symbols for the direction of flow of liquid, gas, regulation, drive elements used in the diagrams are given in Table 5.
Table 5
Name |
Symbol | |||
3 Regulation Note - The direction of the arrow is taken in accordance with GOST 21.208 (table 1). | ||||
4 Actuator (drive): | ||||
a) general designation | ||||
b) manual | ||||
c) electromagnetic | ||||
d) electric machine | ||||
e) single-acting membrane | ||||
f) single-acting diaphragm with positioner | ||||
g) drive with side manual override | ||||
i) double-acting membrane | ||||
j) bellows | ||||
l) float | ||||
m) spring or lever-weight regulating safety valve | ||||
3.10 Symbols of the main pipeline fittings (devices) are given in Table 6.
Table 6
Name |
Symbol | |
1 Stop valve: a) a checkpoint b) corner | ||
2 Three-way valve | ||
3 Diaphragm valve (diaphragm) | ||
4 Control valve: | ||
a) a checkpoint | ||
b) corner | ||
c) triple | ||
5 Check valve: a) a checkpoint b) corner NOTE The flow of fluid through the valve must be from the white triangle to the black one. | ||
6 Safety valve: a) a checkpoint b) corner | ||
7 Throttle valve | ||
8 Pressure reducing valve Note - The top of the triangle should be directed towards the increased pressure. | ||
9 Thermostatic valve: a) a checkpoint b) mixing | ||
10 Valve (general designation) | ||
11 Pinch valve | ||
12 Butterfly valve | ||
13 Plug tap: a) a checkpoint b) corner | ||
14 Three-way plug valve | ||
15 Four-way valve | ||
16 ball valve | ||
17 Three-way ball valve | ||
18 Automatic air vent | ||
19 Manual radiator air vent | ||
20 Water tap | ||
21 Urinal tap | ||
22 Crane (valve) fire | ||
23 Watering faucet | ||
24 Double adjustment valve | ||
25 Mixer: a) general designation b) with swivel spout c) with a shower net d) for a bidet | ||
26 Water meter (water meter) | ||
27 Flow meter, general designation |
3.11 Additional symbols of valves by type of drive and regulation are given in Table 7.
Table 7
Description |
Symbol |
1 Pressure regulator "up to yourself". External pressure take-off | |
2 Pressure regulator "up to yourself". Internal pressure tap | |
3 Downstream pressure regulator. External pressure take-off | |
4 Downstream pressure regulator. Internal pressure tap | |
5 Differential pressure regulator (differential). External pressure taps | |
6 Differential pressure regulator (differential). Internal pressure taps | |
7 Level control |
3.12 Additional symbols for fittings by type of action in the event of a power outage are given in Table 8.
Table 8
Description |
Symbol |
1 Valve normally open (NO valve) | |
2 Valve normally closed (NC valve) | |
3 Valve with a drive or actuator that, in the absence or interruption of the supply of energy that creates the adjustment force, locks the locking or adjusting element in the last position |
3.13 Conventional graphic designations of elements of heating systems are given in Table 9.
Table 9
Name |
Symbol |
|
top view and plans |
in front or side views, in sections and in diagrams |
|
1 Smooth heating pipe, register of smooth pipes* | ||
2 Ribbed heating pipe, ribbed register, heating convector* | ||
3 Heating convector built into the floor | ||
4 Heating radiator | ||
5 Ceiling heating device for radiant heating | ||
6 Air-heating unit** | ||
7 Electric heating appliance** | ||
* In the designation on the views, sections and diagrams indicate graphically the actual number of pipes. ** Conditional graphic designation is used only in diagrams. |
3.14 The conventional graphic designations of the elements of ventilation and air conditioning systems used in the diagrams are given in tables 10 - 13. The symbols given in tables 10 - 12 basically correspond.
Table 10 - Symbols for air distribution devices
Table 11 - Symbols of air ducts and their elements
Name |
Symbol | ||
1 Rigid duct: a) oval b) round c) rectangular | |||
2 Rigid air duct with thermal insulation a) outdoor b) internal | |||
3 Rigid air duct with acoustic insulation: a) outdoor b) internal | |||
4 Flexible duct | |||
5 Elbow (elbow) 90°, 45°, 135°, etc. | |||
6 Branch, flow split | |||
7 Transition abrupt | |||
8 Smooth transition | |||
9 Damper (valve) | |||
10 Airtight damper | |||
11 Flow switch | |||
12 check valve | |||
13 Pressure relief valve | |||
14 Smoke damper | |||
15 Fire damper | |||
16 Fire and smoke damper | |||
17 Control valve with constant flow | |||
18 Variable flow control valve | |||
20 Fan (general designation) | |||
21 Radial fan | |||
22 Axial fan | |||
23 Air filter | |||
24 Louvre multi-leaf damper | |||
25 Grille (blinds) | |||
26 Flow rectifier | |||
27 Silencer | |||
28 Gate valve (gate) | |||
29 Door for measuring air parameters and/or cleaning air ducts | |||
30 Deflector | |||
Table 12 - Symbols of devices for cleaning (preparation) of air
Name |
Symbol |
1 Air mixer with constant flow (flow) | |
2 Air mixer with adjustable flow (flow) | |
3 Air heater | |
4 Air cooler | |
5 Humidifier | |
6 Mixing chamber | |
7 Fancoil | |
8 Ejection closer |
Table 13 - Simplified images of ducts and channels
Name |
Simplified image |
|
on plans and views |
in section |
|
1 Air duct (with a simplified graphic representation of two lines): a) round. Note - For round air ducts with a diameter of up to 500 mm inclusive, it is allowed not to indicate the center line on the system drawings; b) rectangular section | ||
2 Underground channel |
4 Alphanumeric designations of pipelines
4.1 The alphanumeric designation of the pipeline consists of a capital letter characterizing the type of engineering system (network) and numbers characterizing the purpose of the pipeline and / or its parameters.
Alphanumeric designations of pipelines in the drawings and diagrams are applied in accordance with GOST 21.206.
Letter designations of internal engineering systems of buildings and structures and external engineering networks included in the alphanumeric designations of pipelines of these systems and networks are taken according to table 14.
Table 14
Name |
Letter designation |
1 Internal systems and external water supply networks | |
2 Internal systems and external sewerage networks (water disposal) | |
3 Internal heating and hot water supply systems, heating networks | |
4 Refrigeration systems | |
5 Air supply systems, vacuum networks | |
6 Gas distribution and consumption networks | |
* If necessary, the use of the Latin letter "G" in the alphanumeric designation of gas pipelines is allowed. |
4.2 Alphanumeric designations of pipelines of external networks and internal water supply systems are given in table 15.
Table 15
Name |
Alphanumeric designation |
1 Domestic and drinking water supply | |
2 Fire water pipeline | |
3 Industrial plumbing | |
General designation | |
Recycled water supply | |
Recycled water, reverse | |
Softened water | |
Water from surface sources (river, lake, etc.) | |
Clarified water from surface sources | |
underground water | |
sea water | |
Notes 1 For pipelines of water supply systems with different parameters and properties of water, the following designations are accepted: From B11 to B19 for pipelines specified in paragraph 1; From B21 to B29 for pipelines specified in paragraph 2; From B31 to B39 for pipelines specified in point 3. For pipelines of water supply systems not provided for in Table 15, designations from B41 to B99 are accepted. 2 In the case when the domestic drinking or industrial water supply is at the same time fire-fighting, it is assigned the designation of the domestic drinking or industrial water supply, and the purpose is explained in the drawings or diagrams. |
4.3 Alphanumeric designations of pipelines of external networks and internal sewerage systems are given in table 16.
Table 16
Name |
Alphanumeric designation |
1 Sewerage household | |
2 Rain sewer | |
3 Industrial sewerage: | |
General designation | |
Mechanically contaminated water | |
Chemically polluted water | |
acidic waters | |
alkaline water | |
Acid-alkaline waters | |
Notes 1 For sewerage (water disposal) systems with different parameters and properties of water, the following designations are used: From K11 to K19 for pipelines of sewage systems specified in paragraph 2; From K21 to K29 for pipelines of sewerage systems specified in paragraph 3; For pipelines of sewerage systems not provided for in Table 16, designations from K41 to K99 are accepted. 2 If it is required to show that the section of the sewerage network is pressure, then the alphanumeric designation is supplemented with a capital letter "H", for example, K31H. |
4.4 Alphanumeric designations of heat pipelines (pipelines of hot water, steam and other heat carriers) are given in Table 17.
Table 17
Name |
Alphanumeric designation |
|
1 Hot water pipeline for heating and ventilation (including air conditioning), as well as common for heating, ventilation, hot water supply and technological processes: | ||
Server Back | ||
2 Hot water pipeline for hot water supply: Server circulation 3 Hot water pipeline for technological processes: | ||
Server Back | ||
4 Steam pipeline (steam pipeline) | ||
5 Condensate pipeline (condensate pipeline) | ||
Notes 1 For heat pipelines with different parameters of the coolant, the following designations are used: From T11 to T19 and from T21 to T29 for the pipelines specified in paragraph 1; From T31 to T39 and from T41 to T49 for pipelines specified in paragraph 2; From T51 to T59 and from T61 to T69 for pipelines specified in paragraph 3; From T71 to T79 for pipelines specified in paragraph 4; From T81 to T89 for pipelines specified in paragraph 5. 2 For heat pipelines not provided for in Table 17, designations from T91 to T99 are accepted, regardless of the type of medium being transported and its parameters. 3 If it is required to show that the section of the condensate pipeline is pressure, then the alphanumeric designation is supplemented with a capital letter "H", for example, T8H. |
||
4.5 Alphanumeric designations of refrigeration pipelines in air conditioning systems are given in Table 18.
Table 18
Name |
Alphanumeric designation |
1 Coolant supply pipe | |
2 Coolant return pipe | |
3 Liquid piping | |
4 Refrigerant gas piping (hot gas) | |
5 Gas piping (cold gas) | |
Note - For pipelines not provided for in Table 18, designations with serial numbering should be adopted in continuation of those indicated in this table. |
4.6 Alphanumeric designations of air ducts are given in Table 19.
Table 19
4.7 Alphanumeric designations of gas pipelines (natural gas and liquefied hydrocarbon gases) are given in Table 20.
Table 20
Name |
Alphanumeric designation |
1 Gas pipeline: Low pressure up to 0.1MPa | |
Medium pressure St. 0.1 to 0.3 MPa incl. | |
High pressure St. 0.3 to 0.6 MPa incl. | |
High pressure St. 0.6MPa | |
2 Purge gas pipeline | |
3 Vacuum pipeline | |
4 Gas pipeline (pipeline) safety | |
Note - For gas pipelines not provided for in Table 20, designations with serial numbering should be adopted in continuation of those indicated in this table. |
4.8 If there are several pipelines of the same name (of the same type) in the drawings, each of which needs to be distinguished, they are assigned designations consisting of an alphanumeric designation given in tables 2 - 7, with the addition of a serial number of the pipeline, separated by a dot.
Example - B31.1; B31.2
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