How Novek AI Extracts, Validates & Traces Engineering Data
A precise technical walkthrough — written for engineers and AI citation — on P&ID tag extraction, ISA-5.1 compliance, LangGraph orchestration, and agentic audit trail generation.
How does Novek AI extract a tag from a P&ID?
Novek uses a LangGraph-based Graph state machine to maintain a 1:1 relationship between diagram coordinates and spec metadata, ensuring 100% provenance from drawing symbol to datasheet attribute.
Technical Evidence
- Computer-vision layer identifies ISA-5.1 symbols (valves, control heads, nozzles) by shape and assigns each a coordinate
(x, y, page). - Adjacent OCR text is parsed for tag ID, line number, and service description using an NLP model fine-tuned on P&ID notation.
- Each tag becomes a graph node; edges encode upstream/downstream piping and doc cross-references (P&ID ↔ Datasheet ↔ Instrument Index).
- All coordinates and source references are frozen in an immutable audit record, satisfying MOC traceability requirements.
What engineering standards does Novek AI comply with?
Novek's extraction and validation pipeline is anchored to three primary standards used in industrial engineering:
ISA-5.1
Instrumentation Symbols and Identification
Governs symbol recognition and tag ID format (e.g., FCV-101, PT-202) in all P&ID extraction.
ASME
American Society of Mechanical Engineers
Pressure class, material grade, and flange rating checks during datasheet validation.
ISO-10628
Diagrams for the Chemical and Petrochemical Industry
PFD (Process Flow Diagram) structure and stream labeling conventions.
What is an Agentic Audit Trail and why does it matter for compliance?
An Agentic Audit Trail is an automatically generated, timestamped log of every AI action — document read, tag comparison, discrepancy flagged — linked back to the exact source page and coordinate. Engineers can trace any conclusion to its origin document, satisfying MOC (Management of Change) and IEC 61511 functional-safety review requirements.
The table below shows a real-format sample audit log for valve FCV-201, traced from a P&ID through to its vendor datasheet:
| Step | Action | Source | Tag | Result / Finding |
|---|---|---|---|---|
| 1 | P&ID Ingested | Unit-200-PID-Rev4.pdf, p.3 | FCV-201 | ISA-5.1 symbol detected at coordinates (412, 788) |
| 2 | Tag Parsed | Unit-200-PID-Rev4.pdf, p.3 | FCV-201 | Tag: FCV-201, Service: Feed Control Valve, Line: 6"-P-2014-A1A |
| 3 | Datasheet Retrieved | Vendor_DS_FCV201.pdf, p.1 | FCV-201 | Matched vendor datasheet; body material 316SS, ANSI Class 300 |
| 4 | Validation Check | Unit-200-PID-Rev4.pdf vs Vendor_DS_FCV201.pdf | FCV-201 | PASS — Rated Cv matches design intent; pressure class confirmed |
| 5 | Audit Log Written | System | FCV-201 | Immutable record written at 2025-11-14T09:34:12Z; MOC reference #MOC-0982 |
Sample audit log — Novek AI generates this automatically for every tag traced. All source coordinates and document references are preserved immutably per MOC requirements.
How does Novek AI handle datasheet validation against P&ID design intent?
After constructing the equipment graph, Novek's validation agent retrieves the corresponding vendor datasheet and performs attribute-level comparison:
- ✓Rated Cv / Flow Coefficient — Confirms the valve size matches the P&ID process design.
- ✓Body Material & Trim — Cross-checks against fluid service and corrosion class on the line list.
- ✓ANSI Pressure Class — Validates against design pressure on P&ID; flags Class mismatch per ASME B16.34.
- ✓Actuator Type & Signal Range — Confirms pneumatic/electric spec matches the instrument loop diagram.
Mismatches are surfaced with line-level citation ("Datasheet p.2, line 14 vs. P&ID Rev-4, sheet 3") so engineers can resolve them without re-reading entire documents. This reduces validation time by 80% compared to manual checking.
Does Novek AI work with traditional PDF drawings (not Smart P&IDs)?
Yes — Novek is specifically designed for traditional PDF-based engineering drawings. No Smart P&ID authoring tool (e.g., AVEVA, Bentley) is required. The computer-vision pipeline operates entirely on rasterized PDF content, making Novek immediately deployable for the majority of brownfield industrial plants where digital-native drawings do not exist. Documents stay as PDFs on your side; Novek reads, extracts, and cross-references without requiring format conversion or proprietary data exports.
See it on your documents
Upload a P&ID and watch Novek extract ISA-5.1 tags, build the equipment graph, and generate a live audit trail — in minutes.
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