Flow sheets/ lay outs/
In the following we only regard the main maps of a chemical plant; beside these main maps they are several different additional maps and sheets which are not described herein.
Flow sheets: we design according to EN ISO 10628 (formerly: DIN 28004) or according to your norm. We differ between 3 different kinds:
Flow sheets (drawings of processes/plants by use of symbols and lines with all basic and additional information, but without level indication)
PID's (drawings of processes/plants by use of symbols and lines with all basic and additional information, relative vertical positioning, information for local/remote controls and for material used, without amounts of input/output). Along with the PID's normally several different material sheets are worked out: list of equipment, piping list, list of armatures, list of controls, electro list,etc. On basis of these sheets it's possible to perform detailed calculation, ordering or/and cost control. As the lists are are made up in Excel usually it is also possible to take over the informations to other software programs e.g. to SAP R/3 or maintenance.
Example of a
basic flow sheet
Example of an executed
Example of an executed
Naturally any execution is at your choice, as the executed sheets/drawings often have to fit with existing papers or have to fullfil legal permit requirements.
A public norm for lay outs is unknown, presumably because the rules for setting up such drawings are essentially intuitive. Nevertheless, there are a few rules one can follow:
If necessary additional drawings are to complete the lay
- instructions on building construction and forces/weight (loads to carry off, traffic, instructions on location/size of doors and windows, breakings, openings for air ventilation, etc.)
- Piping (2d-drawings of pipes, pipe supports and armatures)
- Isometrics (isometric drawing of pipes, pipe supports and armatures)
- 3d lay-out for third party instructions or for training purposes (CAD-version)
- Plant model for third party instructions or for training purposes (plastic model, on scale)
- Documentation for own purposes or for legal permits
The above listing is for an example. If necessary or depending on the kind of plant/site there might be more elements or drawings. The requirement of these has to be decided induvidually.
A site map one usually defines is a 2d-drawing of the contour of a plant (e.g. as square) within several plants/sites, within a map of the land registration office or a similar overview. The drawings have to be on scale according to legal requirements or according to existing drawings (normally 1:500 to 1:5000).