Find the most up-to-date version of BS at Engineering BS Specification for graphical symbols for general engineering. Piping systems and plant. Publication Year. Document Status. Green. BS Specification for graphical symbols for general engineering. Piping systems and plant. standard by BSI Group, 03/31/
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Skip to main content. Log In Sign Up. Piping systems and plant UDC 153-1 this revision of BS To accomplish this aim BS BS and BS have accordingly been withdrawn.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 A British Standard does not purport to include all the necessary provisions of a contract.
Users of British Standards are responsible for their correct application. Compliance with a British Standard does not 1553-1 itself confer immunity from legal obligations.
Summary of pages 153-1 document comprises a front cover, an inside front cover, pages i and ii, pages 1 to 40, an inside back 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 the inside front cover. It is intended that diagrams employing these symbols should be drawn in accordance with the practice recommended in BS Responsibility change Pipe bore change Change in fall 4.
T Tee port L L port 4. U tube or floating head 5. Intermediate trays should be included and numbered where they are significant.
Specification for graphical symbols for general engineering. Piping systems and plant
It is therefore recommended that wherever possible, the basic symbol should be used for a conveyor of any type.
However, if it is felt that some elaboration must be b, the following symbols are shown to demonstrate the development of the basic symbol. Description Symbol Single line convention Double line convention 6.
Description Symbol Single line Double line representation representation 6. Description Symbol Single line representation Double line representation 6. The direction and configuration of the arrows define the function of the equipment.
In order to appreciate the reasoning behind some of the alternatives it is necessary first to state the differences between the requirements of an engineering diagram and the requirements of an engineering drawing.
An engineering diagram is usually prepared in single-plane form for the purpose of showing in the simplest possible manner the principal inter-relationships of elements in a system and how the system operates. It may show in full the functioning of a circuit, a process sequence or an installation, symbolically depicting all the essential units, parts and connections to show the layout in the clearest possible manner but without regard for the physical disposition of such features.
Apart from giving such information as pipe size, linear dimensions are rarely used on engineering diagrams because they are not normally the proper vehicle for conveying information on precise physical or geographical relationships. On an engineering diagram, flow lines crossing but unconnected are represented thus, while flow lines crossing and connected are represented by or. Flow lines connected but without crossing are represented thus.
In past years alternative methods employing loops a and broken lines b have been used but on complex diagrams involving closely spaced, parallel flow lines these methods are not practicable a deprecated b deprecated A. An engineering drawing is used to show how a part is to be made, or how parts are assembled and installed relative to other equipment. The physical relationships of components and equipments and their disposition are important and therefore precise dimensions and locations are fully stated.
The installation of a heating, ventilating or refrigeration plant within a building or other structure, e. Contrary to the single-plane presentation of a diagram, a drawing is of multi-plane form and pipelines may be indicated normal to the plane of the drawing itself.
In an engineering drawing a dot on a line thus, would indicate that a pipeline rises or falls vertically from the plane of the drawing and is connected to another pipe running horizontally. Hence, it is necessary always to realize the distinct purpose of the engineering drawing and the engineering diagram and, by so doing, to avoid confusion between methods of representation which at first sight are similar but which, in their separate contexts, have very different interpretations.
Because this is an accepted drawing discipline, misunderstandings are in reality very rare and their possibility can be further reduced by the use of additional elevations on the drawing. BS, Graphical symbols for process measurement and control functions. BSSteel pipe fittings, screwed and socket-welding for the petroleum industry.
BSDrawing practice for engineering diagrams.
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