PDMS Interview Questions And Answers
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Best PDMS Interview Questions and Answers
PDMS (Plant Design Management System) is a 3D plant design software developed by AVEVA. It is used for designing process plants, including piping, equipment, structures, HVAC, cable trays, and generating engineering deliverables.
- Admin
- Design
- Draft
- Isodraft
- Paragon
- Specon
- Lexicon
- Monitor
The Admin module is used to create projects, databases, users, teams, access rights, and manage project administration.
A Design Database stores all 3D plant model information including piping, equipment, structures, HVAC, and supports.
MDB (Multiple Database) is a collection of databases that users access during project execution.
- World
- Site
- Zone
- Equipment
- Pipe
- Branch
- Component
A Site represents a plant location containing multiple zones.
A Zone is a subdivision of a site used for organizing plant areas.
Equipment modeling involves creating pumps, vessels, tanks, heat exchangers, compressors, columns, and other plant equipment.
Primitives are basic geometric shapes such as cylinders, cones, boxes, torus, and pyramids used to create equipment.
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Piping is the process of routing pipelines using specifications and catalog components.
A Branch is a section of a pipe containing connected piping components.
- Head: Starting point of the branch.
- Tail: Ending point of the branch.
Pipe Specification defines which piping components are allowed for a particular service.
A Catalog contains standard piping components like elbows, tees, valves, reducers, flanges, and fittings.
Paragon is used to create and maintain piping catalogs and specifications.
Specon is used to build piping specifications from catalog components.
Draft is used for creating 2D drawings from the 3D model.
Isodraft automatically generates piping isometric drawings.
Clash Detection identifies physical interference between plant components.
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- Hard Clash
- Soft Clash
- Clearance Clash
A nozzle is the connection point between equipment and piping.
Orientation defines the direction of components such as North, South, East, West, Up, and Down.
PDMS uses X, Y, and Z coordinates to position components.
CE stands for Current Element, the currently selected object.
Owner refers to the parent element of the current object in the hierarchy.
Attributes store information like Name, Position, Orientation, Bore, Specification, and Material.
PML (Programmable Macro Language) is PDMS’s scripting language used for automation.
A Macro is a sequence of commands used to automate repetitive tasks.
It validates whether the model complies with project specifications and engineering rules.
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A Pipe Route is the path followed by a pipeline from one point to another.
Pipe supports hold piping systems safely and reduce stress and vibration.
Backtracking allows designers to modify previous routing decisions.
Reference Geometry provides modeling guidance without being actual design components.
Global Clash checks interference throughout the entire project.
Local Clash checks interference within a selected area.
Templates provide predefined configurations for frequently used equipment or structures.
- DGN
- DWG
- DXF
- STEP
- IGES
- CIS/2
- General Arrangement Drawings
- Isometric Drawings
- Bill of Materials (BOM)
- Material Take-Off (MTO)
- Reports
Material Take-Off (MTO) generates the quantity of materials required for construction.
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Bill of Materials lists all components used in the project.
UDA allows organizations to add custom properties to design elements.
Lexicon manages User Defined Attributes and project dictionaries.
- Divide the project into zones.
- Use optimized databases.
- Reduce unnecessary graphics.
- Perform regular database maintenance.
- Archive unused data.
Database Extract allows multiple designers to work simultaneously on separate copies.
Merge combines extracted databases into the master database after validation.
AVEVA E3D is the successor to PDMS with enhanced 3D modeling, collaboration, and visualization capabilities.
- Oil & Gas
- Petrochemical
- Refineries
- Power Plants
- Offshore Platforms
- Pharmaceuticals
- Water Treatment Plants
- Chemical Plants
- Piping Design
- Equipment Modeling
- Structural Modeling
- Catalog & Specification Management
- Isometric Generation
- Clash Detection
- Engineering Drawings
- PML Basics
PDMS improves design accuracy, reduces engineering errors, enables multi-user collaboration, automates drawing generation, minimizes clashes, shortens project timelines, and improves overall plant design efficiency.
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