ISO 14084-2:2015

INTERNATIONAL ISO
STANDARD 14084-2
First edition
2015-04-01
Process diagrams for power plants —
Part 2:
Graphical symbols
Schémas de procédés pour centrales électriques —
Partie 2: Symboles graphiques
Reference number
©
ISO 2015
© ISO 2015
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Contents Page
Foreword .vi
Introduction .vii
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Graphical symbols . 1
4.1 General . 1
4.2 Size of graphical symbols . 1
4.3 Creation of new symbol examples . 2
4.4 Symbols for large/complex objects . 2
5 Structuring and representation . 2
5.1 Overall structure . 2
5.2 Registration numbers . 2
5.3 Representation of graphical symbols in the standard . 3
5.4 Legend to table representation . . 3
6 Connections and related devices . 4
6.1 Fluid connections . 4
6.1.1 Functional connections . 4
6.1.2 Connections with indication of process media . 4
6.1.3 Simplified representation . 5
6.1.4 Symbols for direction, branching, crossing, etc. 5
6.1.5 Pipeline joints, couplings, etc. 6
6.1.6 Accessories for connections . 6
6.1.7 Pipeline components . 7
6.1.8 Pipeline insulation, tracing, etc. . 8
6.2 Mechanical connections . 9
7 Fluid flow control . 9
7.1 Valves . 9
7.1.1 On-off valves . 9
7.1.2 Non-return valves .10
7.1.3 Control valves .11
7.1.4 Safety and relief valves .12
7.1.5 Special valves .13
7.1.6 Supplementary valve symbols .13
7.1.7 Specific valve features .14
7.2 Dampers .14
7.2.1 On-off dampers .14
7.2.2 Non-return dampers.15
7.2.3 Control dampers .15
7.2.4 Safety dampers .16
7.3 Safety devices other than valves .16
8 Actuators .16
8.1 Manual actuators . .16
8.2 Mechanical actuators .16
8.3 Automatic actuators .17
8.4 Supplementary symbols .17
9 Fluid transport .18
9.1 Pumps .18
9.2 Fans, ventilators, blowers, compressors, etc. .19
9.3 Vacuum pumps, etc. .20
10 Fluid energy transfer .21
10.1 Heat exchangers .21
10.2 Energy transfer by mixing .23
10.3 Cooling towers .23
11 Fluid processing .24
11.1 Separation .24
11.1.1 Separation, general .24
11.1.2 Separation of suspended substances in liquids .25
11.1.3 Separation of suspended substances in gasses .27
11.2 Processing of fluids by adsorption, catalysis, conversion, thermic, etc. .28
11.2.1 Liquids .28
11.2.2 Gasses .29
11.3 Mixing .30
11.3.1 General.30
11.3.2 Devices for mixing .30
12 Storage .31
12.1 Permanent storage .31
12.2 Storage devices, surface indications, etc. .32
12.3 Mobile storage devices .33
12.4 Energy storage, expansion devices .33
13 Material transport .34
13.1 Conveyors, elevators, unloaders, etc. .34
13.2 Material flow control .
...