Legacy Drawing Digitisation

Turn legacy PDF and CAD P&IDs into connected engineering data

Most legacy P&IDs were created for humans to read, not for software to reason over. Novek reconstructs the engineering knowledge locked inside static drawings into an explicit, source-traceable engineering graph.

The Novek Ingestion & Reconstruction Pipeline
Input Sources
PDF P&IDs (Vector & Scanned)
Scanned drawings, TIFF/PNG prints, multi-sheet packages
Legacy CAD Drawings
Exported CAD plots, older 2D CAD files & DWG/DXF prints
Novek AI EngineVision Symbology & Topology Reconstruction
No intelligent CAD required
Connected Model Output
Topological GraphVerified
• Equipment & Nozzles
• Piping runs & In-line valves
• Instrument loops & Interlocks
• 100% Pixel coordinate proof
Core Technical Differentiator

Start from existing PDF, scanned/image-based or CAD P&IDs. Novek reconstructs the engineering information represented in the drawing rather than requiring an existing intelligent engineering model.

The Semantic Gap

Why static engineering drawings resist automation

A static P&ID is rich with visual meaning to a human engineer, but completely opaque to software. Downstream systems—such as SmartPlant P&ID, digital twin engines, HAZOP software, and AI agents—require explicit objects, typed properties, and directional relationships.

1

Visual Lines vs. Process Networks

Dumb CAD and raster drawings represent pipes as disjointed 2D vectors. Software needs to know source nozzles, destination equipment, inline components, and flow direction.

2

Flat Text vs. Typed Engineering Classes

Generic OCR extracts strings of letters and numbers without knowing if XV-101 is an emergency shutdown valve, which line it isolates, or which SIS interlock controls it.

3

Cross-Sheet Disconnections

Process streams span dozens of drawings. Off-page connectors (OPCs) must be resolved to understand multi-sheet unit topology.

Structural Representation ComparisonEntity Mapping
Flat Drawing (Dumb)
Line: (x1:45, y1:60) → (x2:120, y2:60)
Text: "V-101" at (35, 62)
Text: "4\"-HC-1001" at (90, 50)
Symbol: Polygon #412
Novek Connected Model
Equipment: V-101 (Separator)
Port: Nozzle N1 (4" 300#)
Process Line: 4"-HC-1001-A1A
Inline Valve: XV-101 (ESD)
Provenance:100% Traceable to source pixels
Visual Capability Grid

What Novek reconstructs from static P&IDs

Every component, connection, attribute, and operational relationship is extracted and unified into an intelligent data model.

Assets

Equipment & Vessels

Extracts equipment tags, types, nozzle schedules, design parameters, and associated design conditions.

Piping

Piping & Process Lines

Reconstructs line numbers, pipe sizes, specs, insulation, heat tracing, and flow direction arrows.

Valves

Inline Valves & Actuators

Identifies manual, control, safety relief, check, and ESD valves with actuator types and fail positions.

Instrumentation

Instruments & Control Loops

Classifies transmitters, indicators, DCS/PLC interlocks, controllers, and signal line topologies.

Semantics

Tags & Symbology

Extracts ISA 5.1 and client-specific tags, matching symbols against project legend sheets.

Attributes

Design Properties

Captures operating pressures, design temperatures, materials of construction, and service descriptions.

Topology

Ports & Connections

Maps flanged, threaded, welded, and socket connections with exact nozzle and component port matching.

Graph Model

Process Topology

Builds a complete directional graph of upstream and downstream process flow across the plant unit.

Multi-Sheet

Off-Page Connectors

Resolves cross-drawing continuation lines and OPC references to stitch multi-sheet packages.

Auditability & Verification

Complete source traceability for engineering sign-off

Engineering teams cannot deploy black-box data. Every single object, property, and connection generated by Novek retains a direct chain of custody back to the original source drawing.

Source DrawingPage / SheetGrid / Bounding BoxEntity Object

For PDF or image-based drawings, source references resolve directly to the relevant sheet number and pixel coordinates. Click any field to inspect the source crop.

Traceability InspectorTag XV-101
SOURCE DOCUMENT
PID-Area10-Primary.pdf
Sheet 1 · Grid C3
PIXEL BOUNDING BOX
[x: 185, y: 33, w: 26, h: 24]
99.1% Confidence
✓ Verified with original PDF crop. Timestamped audit log ready for release.
Frequently Asked Questions

Legacy P&ID Digitisation FAQs

What types of legacy P&ID drawings can Novek process?

Novek processes vector and scanned PDF drawings, TIFF/PNG raster scans, exported CAD drawings (DWG/DXF/DGN conversions), and multi-sheet drawing packages accumulated over decades. The source does not need to already exist as an intelligent CAD model.

How does Novek reconstruct connectivity from static drawings?

Novek combines computer vision with domain-specific engineering rules to recognize equipment, nozzle connections, piping runs, inline valves, flow direction arrows, and instrument signal lines. It stitches these elements into a unified topological graph rather than just performing flat OCR.

How is source traceability maintained for audited drawings?

Every generated node, tag, attribute, and connection retains a persistent link back to its exact bounding box coordinates and page number on the original drawing sheet. Engineers can click any extracted property to view and verify the original source crop.

What downstream formats can the digitized data be exported to?

Novek exports structured data in DEXPI-aligned XML (ISO 15926), SmartPlant P&ID compatible tables, line lists, master tag registers, instrument indices, CSV/Excel spreadsheets, and directly via GraphQL or REST APIs for digital twins and AI agents.

Does Novek require client-specific legend training?

Novek includes out-of-the-box support for major industry symbology standards (ISA 5.1, ISO 10628, DIN, PIP) and automatically ingests client-specific project legend sheets to recognize custom symbols, line styles, and tagging conventions.

Have legacy PDF or CAD P&IDs you need to make usable by software?

Bring a sample drawing package. We will demonstrate how Novek reconstructs your legacy P&IDs into structured, source-traceable engineering models.

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