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Plant Engineering Infobase
Standards, flow diagrams, identification systems, disciplines, CAD practice and as-built capture – explained concisely, with sources and direct links to calculators, templates and training.
Chapter overview
Each chapter is a separate page. Switch between chapters at any time at the top.
Process engineering
Process engineering deliberately changes the properties of substances, such as composition, form or state. This takes place in equipment and …
Flow diagrams
Flow diagrams represent a process schematically. Three types are distinguished by level of abstraction. The governing standards are DIN EN ISO 10628-1:2015 …
- Symbol systems compared
Plant identification
Identification systems give every component of a plant a unique, machine-readable designation. In CAD they are handled via property fields …
- Reference designation according to DIN EN IEC 81346
- KKS – power plant classification system
- AKS – plant identification for buildings
- Identification letters for equipment, valves and piping
Process control engineering
PCE loops (formerly EMSR loops) are represented in the P&ID according to DIN EN 62424:2017-12. It replaces the withdrawn DIN 19227-1. The …
- Open-loop and closed-loop control
- Structure of a PCE loop
- Identification letters according to DIN EN 62424
Documentation
Plant documentation is part of project management, like quality management and project controlling. Well structured, it reduces operating …
- Structure and identification of documents
- Data sheets
- Bills of materials
- Delivery times
Disciplines
A plant is created through the interaction of several disciplines. For CAD design, interfaces, space requirements and freedom from clashes matter most.
- Apparatus engineering and pressure equipment
Piping
The basic standard for metallic industrial piping is the DIN EN 13480 series (2024-12 edition). Piping specs are structured according to DIN 21057, the …
- Outside diameters and wall thicknesses
- Support spans
- Component data for building catalogs
- Valves
Piping specs
A piping spec defines which components are permitted for a line. This makes it possible to comply consistently with process requirements, …
- Naming
- Materials
- Facings and connection types
- Gaskets
Drawings and drawing standards
General views, layout drawings and piping isometrics are derived from the 3D model. Border, title block and lines follow the standards …
- Title block according to DIN EN ISO 7200
- Line types according to DIN EN ISO 128-2
Revision management
The revision status identifies a specific revision of a document. With each revision it receives a new index (letter or …
Designing with CAD
Goals: avoid design errors, follow review and approval procedures, request and implement requirements, create as few revisions as possible.
- Project stakeholders and escalation
- Checklists
Project Setup in AutoCAD Plant 3D
The goal is a template project with usable layouts, a plant identification system (here KKS) in tag assignment, automatic annotation and …
- Project data
- Fields, tags and annotation
- Comparing P&ID and Plant 3D
- Lines, symbols, catalogs
As-built capture with laser scanning
Revamps and extensions of existing plants are planned most reliably on an up-to-date survey. A 3D laser scanner captures in a few minutes …
- Workflow
- Processes and equipment
- Planning a scan project
- Rules for scanning
Standards status
Research status September 2026. The most recently identified edition is given. Before binding use, check the current edition with the standards publisher …
- Applicable codes and standards
- Withdrawn standards and their successors
- Sources
Questions from practice in training and support
254 anonymized questions with answers on P&ID, Plant 3D, piping specs, AutoCAD, Navisworks and ReCap – searchable.
- P&ID and Project Setup
- Piping specs and catalogs
- AutoCAD basics
- Navisworks and ReCap
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Standards status for this page 8 standards · researched September 2026
| Standard | Contents | Current edition | Replaced / successor |
|---|---|---|---|
| DIN EN ISO 10628-1 | Diagrams for the chemical and petrochemical industry – Part 1: Specification of diagrams | DIN EN ISO 10628-1:2015-04 | replaces DIN EN ISO 10628:2001-03 |
| DIN EN IEC 81346-1 | Structuring principles and reference designations – Part 1: Basic rules | DIN EN IEC 81346-1:2024-07 | replaces DIN EN 81346-1:2010-05 |
| DIN EN IEC 81346-2 | Structuring principles and reference designation – Part 2: Classification of objects and codes for classes | DIN EN IEC 81346-2:2020-10 | replaces DIN EN 81346-2:2010-05 |
| DIN EN 62424 (VDE 0810-24) | Representation of process control engineering requests in P&I diagrams and data exchange between P&ID tools | DIN EN 62424 (VDE 0810-24):2017-12 | replaces DIN EN 62424 (VDE 0810-24):2010-01 |
| DIN EN 13480 | Metallic industrial piping | DIN EN 13480-1 to -6 and -8:2024-12; Part 7 as DIN CEN/TR 13480-7:2022-08 | replaces the 2017-12 editions with amendments A1 ff. |
| DIN 21057 | Piping specs | DIN 21057-1:2023-08; Parts 5/6:2016-12; Parts 10–12:2026-04/-05 | replaces PAS 1057; DIN 21057-1:2016-12; DIN 21057-10 to -12:2017-04 |
| DIN EN ISO 7200 | Technical product documentation – Data fields in title blocks and document headers | DIN EN ISO 7200:2004-05 | replaces DIN 6771-1:1970-12 |
| DIN EN ISO 128-2 | Technical product documentation – General principles of representation – Part 2: Basic conventions for lines | DIN EN ISO 128-2:2023-06 | replaces DIN EN ISO 128-2:2022-02 |
Researched at DIN Media, ISO, IEC and ASME, as of September 2026. Before binding use, please check the current edition with the standards publisher. Overview of all standards: Plant Engineering Infobase · Standards status.