1、BRITISH STANDARD BS 1553-1: 1977 Specification for Graphical symbols for general engineering Part 1: Piping systems and plant UDC 003.62:62+621.64+628.8+66.02+697BS1553-1:1977 This British Standard, having been prepared under the directionof the Mechanical andtheChemical Standards Committees, was pu
2、blished underthe authority of the Executive Board on 31March1977 BSI 01-1999 First published September 1949 First revision March 1977 The following BSI references relate to the work on this standard: Committee references MEE/88 and CHE/17 Drafts for comment 71/34910, 71/34911 and 71/35726 ISBN 0 580
3、 09551 7 Cooperating organizations The Mechanical Engineering Standards Committee and the Chemical Engineering Standards Committee, under whose supervision this British Standard was prepared, consist of representatives from the following Government departments and professional and industrial organiz
4、ations: Mechanical Engineering Standards Committee Institution of Heating and Ventilating Associated Offices Technical Committee Engineers Association of Consulting Engineers Institution of Mechanical Engineers Association of Hydraulic Equipment Institution of Plant Engineers Manufacturers Ltd* Inst
5、itution of Production Engineers Association of Mining Electrical and London Transport Executive Mechanical Engineers Machine Tool Trades Association British Compressed Air Society Ministry of Defence* British Electrical and Allied Manufacturers National Coal Board Association National Engineering La
6、boratory British Gas Corporation Department of Industry British Gear Manufacturers Association Process Plant Association British Internal Combustion Engine Railway Industry Association of Great Britain Manufacturers Association Royal Institute of British Architects British Mechanical Engineering Con
7、federation Society of Motor Manufacturers and Traders British Pump Manufacturers Association Telecommunication Engineering and British Steel Corporation Manufacturing Association British Steel Industry Chemical Engineering Standards Committee Crown Agents for Oversea Governments and Association of C
8、onsulting Engineers Administrations British Gas Corporation Department of the Environment British Mechanical Engineering Confederation Department of Industry Chemical Industries Association* Department of Trade Coke Oven Managers Association Electricity Supply Industry in England and Department of I
9、ndustry Wales* Department of Trade Engineering Equipment Users Association Engineering Equipment Users Association* Federation of Manufacturers of Construction Institution of Chemical Engineers Equipment and Cranes Institution of Gas Engineers* Health and Safety Executive (HM Factory Institution of
10、Structural Engineers Inspectorate) Process Plant Association* Institution of Gas Engineers* The Government department and scientific and industrial organizations marked with an asterisk in the above lists, together with the following, were directly represented on the committees entrusted with the pr
11、eparation of this British Standard. Chartered Institute of Patent Agents North East Coast Institution of Engineers Electricity Supply Industry in England and Shipbuilders and Wales Patent Office Institution of Chemical Engineers Society of Chemical Industry Institution of Civil Engineering United Ki
12、ngdom Atomic Energy Authority Amendments issued since publication Amd. No. Date of issue CommentsBS1553-1:1977 BSI 01-1999 i Contents Page Cooperating organizations Inside front cover Foreword ii 1 Scope 1 2 References 1 3 Symbols (or elements of symbols) used in conjunction with other symbols 1 3.1
13、 General 1 3.2 Pipelines 2 3.3 Valves: actuating methods 3 4 Basic functional symbols 4 4.1 Pipelines 4 4.2 Joints 5 4.3 End closures 6 4.4 Supports and hangers 7 4.5 Valves 8 4.6 Trap functions 10 4.7 Pipeline flexibility 10 4.8 Pipeline features and general equipment 11 4.9 Sensing elements for me
14、asurement and control 12 5 Basic and developed symbols for plant and equipment 13 5.1 Heat transfer equipment 13 5.2 Vessels and tanks 17 5.3 Pumps and compressors 20 5.4 Solids handling 21 5.5 Shaping and forming 24 5.6 Drying 25 5.7 Materials handling 26 5.8 Prime movers 29 5.9 Trucking 30 6 Heati
15、ng and ventilating installations 30 6.1 Pipelines 30 6.2 Ducts (trunks) 30 6.3 Changes of section and/or size of duct (trunk) 31 6.4 Duct (trunk) bends: representation and design 32 6.5 Duct (trunk) fittings 32 6.6 Grills and diffusers 33 6.7 Dampers 33 6.8 Damper actuation 34 6.9 Heat exchange equi
16、pment 34 6.10 Air conditioning and ventilation equipment 36 Appendix A Representation of flow lines crossing (connected and unconnected) 38 Appendix B Example of the use of symbols on a drawing of a low temperature hot water heating installation 39 Appendix C Example of the use of symbols on a drawi
17、ng of an extraction ventilation installation 40 Publications referred to Inside back coverBS1553-1:1977 ii BSI 01-1999 Foreword For many years BSI has published separate specifications for graphical symbols used on engineering diagrams relating to individual technical disciplines; this has inevitabl
18、y led to a few inconsistencies between standards. In this revision of BS 1553-1:1949, which has been prepared under the authority of the Mechanical and the Chemical Standards Committees, an attempt has been made to eliminate such differences and produce a standard which specifies symbols which will
19、be common to heating and ventilating installations and to process plants of all types. To accomplish this aim BS 1553-4:1956 “Graphical symbols for heating and ventilating installations” and BS 974:1953 “Symbols for use on flow diagrams of chemical and petroleum plant”, have also been revised and in
20、corporated into this standard. BS 1553-4 and BS 974 have accordingly been withdrawn. It is intended that the symbols specified in this standard should be applied in accordance with the practice recommended in BS 5070. A British Standard does not purport to include all the necessary provisions of a c
21、ontract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, pages1 to 40, an inside back
22、 cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on theinside front cover.BS1553-1:1977 BSI 01-1999 1 1 Scope This Part of BS 1553 specifies graphical symbols for use in the creation o
23、f flow and piping diagrams for process plant and heating and ventilating installations. It is intended that diagrams employing these symbols should be drawn in accordance with the practice recommended in BS5070. 2 References The titles of the standards publications referred to in this standard are l
24、isted on the inside back cover. 3 Symbols (or elements of symbols) used in conjunction with other symbols 3.1 General No. Description Symbol 3.1.1 Mechanical linkage 3.1.2 Weight device 3.1.3 Electrical device 3.1.4 Vibratory or loading device (any type) 3.1.5 Spray device 3.1.6 Rotary movement 3.1.
25、7 Stirring device 3.1.8 Fan 3.1.9 Access point 3.1.10 Equipment branch: general symbol NOTEThe upper representation does not necessarily imply a flange, merely the termination point. Where a breakable connection is required the branch/pipe would be as shown in the lower symbol.BS1553-1:1977 2 BSI 01
26、-1999 3.2 Pipelines No. Description Symbol 3.1.11 Equipment penetration (fixed) 3.1.12 Equipment penetration (removable) 3.1.13 Boundary line 3.1.14 Point of change (See 4.1.12 for specific examples) 3.1.15 Discharge to atmosphere 3.1.16 Intake from atmosphere 3.1.17 Trap: release or retention 3.1.1
27、8 Flow restrictor (fixed) 3.1.19 Flow restrictor (variable) No. Description Symbol 3.2.1 Pipeline (major flow line) 3.2.2 Pipeline (minor flow line) 3.2.3 Pipeline (existing) 3.2.4 Pipeline (undeground, or concealed) 3.2.5 Existing pipeline (to be removed) 3.2.6 Pipeline (future)BS1553-1:1977 BSI 01
28、-1999 3 3.3 Valves: actuating methods No. Description Symbol 3.3.1 Manual isolation 3.3.2 Power signal 3.3.3 Statically loaded i.e symbol 3.1.4 3.3.4 Spring loaded 3.3.5 Weight loaded 3.3.6 Quick opening 3.3.7 Quick closing 3.3.8 Float control 3.3.9 Dash pot checked 3.3.10 Piston 3.3.11 Diaphragm 3.
29、3.12 Solenoid 3.3.13 Automatic actuating element 3.3.14 Automatic actuating element, with integral manual actuating elementBS1553-1:1977 4 BSI 01-1999 4 Basic functional symbols 4.1 Pipelines No. Description Symbol 3.3.15 Manual actuating element 3.3.16 Motor No. Description Symbol 4.1.1 Crossing (u
30、nconnected) (See Appendix A) 4.1.2 Junction (connected) (see Appendix A) 4.1.3 Heated or cooled NOTEHeating or cooling medium to be annotated adjacent to symbol 4.1.4 Jacketed NOTEHealing or cooling medium to be annotated adjacent to symbol 4.1.5 Lagged 4.1.6 Sleeved NOTEFluid or fill of the annulus
31、 to be annotated adjacent to symbol 4.1.7 Provision for flexibility (See4.7 for specific methods) 4.1.8 Indication of flow direction NOTEIncluded angle of arrow=30 4.1.9 Indication of pipe sizef150mm exampleBS1553-1:1977 BSI 01-1999 5 4.2 Joints No. Description Symbol 4.1.10 Indication of fall (or r
32、ise) 4.1.11 Indication of support points (See4.4 for specific types of supports and hangers) 4.1.12 Indication of point of change (i.e. size, specification, level, responsibility, etc.added to symbol3.1.14) NOTEChanges in conditions should embrace the arrow Examples: Responsibility change Pipe bore
33、change Change in fall 4.1.13 Coincident point of change 4.1.14 Pipe bore change (unspecified) No. Description Symbol 4.2.1 Butt welded NOTEThe proportions of the weld should be thus: 4.2.2 Soldered or solvent welded 4.2.3 Screwed 4.2.4 Compression 4.2.5 Sleeve: BS 534BS1553-1:1977 6 BSI 01-1999 4.3
34、End closures No. Description Symbol 4.2.6 Socket welded: BS 3799 4.2.7 Socket and spigot 4.2.8 Swivel 4.2.9 Flanged and bolted 4.2.10 Electrically bonded 4.2.11 Electrically insulated No. Description Symbol 4.3.1 End cap: general symbol (method unspecified) (Annotate as “detachable”, when appropriat
35、e) 4.3.2 End cap: butt welded 4.3.3 End cap: screwed 4.3.4 End cap: fillet welded 4.3.5 End screwed and plugged 4.3.6 End flanged and bolted 4.3.7 End closure: quick release 4.3.8 End socket and spigotBS1553-1:1977 BSI 01-1999 7 4.4 Supports and hangers No. Description Symbol 4.4.1 Support: basic sy
36、mbol (Use symbol 4.1.11 when a detailed support or hanger is not required) See 4.1.11 4.4.2 Simple support 4.4.3 Resilient support 4.4.4 Adjustable support 4.4.5 Roller support 4.4.6 Simple hanger 4.4.7 Resilient hanger 4.4.8 Adjustable hanger 4.4.9 Constant load hanger 4.4.10 Guide 4.4.11 AnchorBS1
37、553-1:1977 8 BSI 01-1999 4.5 Valves No. Description Symbol 4.5.1 In-line (any type or pattern) 4.5.2 In-line (simple screw-down) 4.5.3 Angle (simple screw-down) 4.5.4 Relief (in-line) 4.5.5 Relief (angle, pressure) 4.5.6 Relief (angle, vacuum) 4.5.7 Check (non-return or reflux) 4.5.8 Check (non-retu
38、rn or reflux) screw down 4.5.9 3-way 4.5.10 4-way 4.5.11 In-line (float operated)BS1553-1:1977 BSI 01-1999 9 No. Description Symbol 4.5.12 Flanged or alternatively 4.5.13 Butterfly 4.5.14 Globe 4.5.15 Ball 4.5.16 Wedge gate 4.5.17 Parallel slide 4.5.18 Needle 4.5.19 Diaphragm 4.5.20 Plug Annotate ty
39、pe of port adjacent to symbol i.e.T (Tee port) L(Lport) 4.5.21 Plug 3-way Annotate type of port adjacent to symbol i.e.T (Tee port) L(Lport)BS1553-1:1977 10 BSI 01-1999 4.6 Trap functions 4.7 Pipeline flexibility No. Description Symbol 4.6.1 Trap drain, e.g.condensate release 4.6.2 Trapped vent, e.g
40、.automatic air valve No. Description Symbol 4.7.1 Bellows 4.7.2 Sleeve extension 4.7.3 Expansion loop 4.7.4 Flexible hose, flanged exampleBS1553-1:1977 BSI 01-1999 11 4.8 Pipeline features and general equipment No. Description Symbol 4.8.1 Strainer or filter 4.8.2 Bursting disc 4.8.3 Flame arrester
41、4.8.4 Silencer 4.8.5 Tundish NOTEArrow to be added when discharge is to atmosphere 4.8.6 Open vent 4.8.7 Separator 4.8.8 Bell mouth 4.8.9 Liquid seal, open 4.8.10 Liquid seal, closed 4.8.11 Syphon drain 4.8.12 HydrantBS1553-1:1977 12 BSI 01-1999 4.9 Sensing elements for measurement and control No. D
42、escription Symbol 4.8.13 Exhaust head No. Description Symbol 4.9.1 Point of measurement 4.9.2 Meter (any type) NOTELetter F indicates flow measurement 4.9.3 Orifice plate 4.9.4 Orifice carrier 4.9.5 Pitot tube 4.9.6 Turbine or propellor 4.9.7 Rotary displacement 4.9.8 VenturiBS1553-1:1977 BSI 01-199
43、9 13 5 Basic and developed symbols for plant and equipment 5.1 Heat transfer equipment No. Description Symbol 4.9.9 Sight flow indicator 4.9.10 Variable area meter 4.9.11 Calibrated pipe run 4.9.12 Diaphragm meter NOTEFor letter codes within the instrument circle and for detailed measurement and con
44、trol symbols see BS 1646. No. Description Symbol 5.1.1 Heat exchanger (basic symbols) Alternative: 5.1.2 Shell and tube: fixed tube sheet 5.1.3 Shell and tube: U tube or floating head 5.1.4 Shell and tube: kettle reboilerBS1553-1:1977 14 BSI 01-1999 5.1.5 Air-blown cooler 5.1.6 Plate type 5.1.7 Doub
45、le pipe type 5.1.8 Heating/cooling coil (basic symbol) 5.1.9 Fired heater/boiler (basic symbol) 5.1.10 Automatic stoker 5.1.11 Upshot heater Where complex burners are employed the “burner block” may be detailed elsewhere on the drawing, thus: No. Description SymbolBS1553-1:1977 BSI 01-1999 15 5.1.12
46、 Cabin heater 5.1.13 Fire tube boiler 5.1.14 Electrical heater (basic symbol) 5.1.15 Oil burner 5.1.16 Gas burner 5.1.17 Tank heater 5.1.18 Electric furnace 5.1.19 Cooling tower (basic symbol) 5.1.20 Cooling tower: natural draft No. Description SymbolBS1553-1:1977 16 BSI 01-1999 5.1.21 Cooling tower
47、: forced/induced draft (Fansto be included as appropriate) 5.1.22 Water-cooled condenser 5.1.23 Air-cooled condenser, natural/forced draft Add fan 3.1.8 if required 5.1.24 Evaporative condenser 5.1.25 Unit humidifier 5.1.26 Water chilling evaporator 5.1.27 Air cooling evaporator 5.1.28 Oil separator
48、 5.1.29 Extractor hood, open type No. Description SymbolBS1553-1:1977 BSI 01-1999 17 5.1.30 Extractor hood, slot type 5.2 Vessels and tanks No. Description Symbol 5.2.1 Drum or simple pressure vessel (basic symbol) 5.2.2 Knock-out drum (with demister pad) 5.2.3 Tray column (basic symbol) 5.2.4 Tray
49、column Trays should be numbered from the bottom; at least the first and the last should be shown. Intermediate trays should be included and numbered where they are significant. 5.2.5 Fluid contacting vessel (basic symbol) No. Description SymbolBS1553-1:1977 18 BSI 01-1999 5.2.6 Fluid contacting vessel Support grids and distribution details may be shown 5.2.7 Reaction or absorption vessel (basic symbol) 5.2.8 Reaction or absorption vessel Where it is necessary to show more than one layer of material alternate hatching should be used 5.2.9
