The only product globally that reads two P&ID revisions, produces a structured delta of tags added / modified / deleted, and tells your procurement team exactly which open purchase orders are affected before the change becomes a six-figure field-discovered error. Upload Rev A and Rev B, receive affected PO list in under a minute. Zero competitors in this workflow anywhere.
Upload Rev N and Rev N-1 as PDFs or CAD files. Pathnovo produces a structured delta: tags added, tags deleted, tags modified (attribute-by-attribute), lines changed, instruments added / replaced, equipment re-rated. Every change captured with before / after values, not just a visual diff.
The delta is automatically matched against your open purchase order register (SAP MM, Oracle iProcurement, JDE, Excel). For each changed tag, the affected POs are identified, including partial impacts (a revised valve size on an open valve PO, or a deleted instrument tag on an open instrument PO).
Two P&IDs in, affected PO list out in under a minute. The workflow runs as an API call or a web-UI upload. Procurement can run this at every revision cycle without scheduling a consultant or waiting days for a manual review.
Each PO impact is classified: no-action (revision does not affect this PO), cancel-line (deleted tag), modify-line (specification change within the order), add-line (new tag requiring procurement), and hold-pending-clarification (ambiguous impact requiring engineer review). Materials engineers focus only on the non-trivial categories.
For each affected PO line, cost impact is estimated using the client's price catalogue: cancellation cost, modification cost, net add cost, and aggregate project impact. A P&ID revision moves from an abstract technical event to a quantified procurement decision in minutes.
Every delta analysis is archived with its Rev N and Rev N-1 source, the affected PO list, the engineering rationale, the procurement decisions taken, and the subsequent change order executions. Management of Change audit trail maintained automatically.
When the delta shows net-add procurement scope, Pathnovo generates the incremental Material Requisition package directly, reusing the project's established MR format, specifications, and vendor approved list. P&ID revision becomes MR-ready scope in one workflow.
REST API for programmatic integration with EDMS (Wrench SmartProject, Aconex, SDx) and procurement systems. Batch mode processes a full project revision cycle (e.g. Rev 4 → Rev 5 across 500 P&IDs) with aggregated impact reporting.
Procurement director uploads Rev 4 and Rev 5 P&IDs during FEED-to-detailed-engineering transition: receives affected PO list in under 1 minute
Change order impact analysis when client issues Rev B P&ID after vendor has raised open POs on Rev A
MoC (Management of Change) during commissioning: quantify procurement impact before approving the change
Revamp project where 60% of P&IDs are revised from as-built to new scope: consolidated PO impact assessment
Detect field-installation risk: P&ID revised after site installation of an instrument, flag for rework or acceptance
Fast-track procurement freeze evaluation: run impact analysis at every P&ID revision to keep the procurement book current
Post-incident P&ID updates (safety findings): immediately see which open POs may now be non-conformant
EPC contractor's cost recovery negotiation with client: quantified evidence of client-driven revision impact on committed procurement
P&ID revision control is handled by EDMS tools (Wrench, Aconex, SDx) and procurement is handled by ERP (SAP MM, Oracle). Neither reads the P&ID and neither connects the revision event to open procurement scope. Some vendors (PNID.IO, Rhyton) do P&ID visual diff, but they do not match against PO registers. Some EPC consultancies do this manually at change-order time, but the turnaround is days or weeks and the accuracy is poor. No product anywhere automates the full P&ID-revision-to-PO-impact chain. Pathnovo is the first.
Any P&ID format: scanned PDFs at any DPI, digital-born PDFs, native AutoCAD DWG / DXF, AVEVA / Hexagon native file formats exported as PDF, TIFF scans, photographed drawings from mobile. Both revisions do not need to be in the same format; Rev A as scanned PDF and Rev B as native DWG is fine.
Standard columns: PO number, PO line, vendor, material description, tag reference (instrument / valve / equipment / line), quantity, spec reference, PO status (open / partial / closed), expected delivery date. Export from SAP MM, Oracle iProcurement, JDE Purchasing, Ariba, or any standard ERP. Excel / CSV acceptable. Exact column mapping is configured once per client at kickoff.
99.5% accuracy on tag-level change detection (added / deleted / modified). 99%+ on attribute-level change detection (size change, rating change, service change, material change). Every change carries evidence linkage back to both source P&IDs with bounding-box highlight. Procurement teams review only the flagged impacts, not the full P&ID.
Visual diff highlights pixel changes. It tells you something changed on the drawing, but does not tell you what changed (tag? line? instrument? attribute?), does not structure the change, does not map to procurement scope, and does not identify affected POs. For a 1,000-P&ID project Rev 4 → Rev 5 with 2,000+ pixel-level changes, visual diff produces 2,000 highlighted regions for a human to interpret. Pathnovo produces a structured table of 120 actual tag changes, each mapped to the affected open POs, with no human interpretation required.
Yes; this is the highest-value use case. Most open-PO impacts are discovered too late: material arrives on site, field crew flags the mismatch, change order is raised, project cost balloons. Pathnovo's analysis runs at every revision event, so the impact surfaces immediately. Procurement can cancel, modify, or hold the affected PO before vendor commits material or starts fabrication. For large revamps this saves crores of rupees per project.
Yes, via API. EDMS systems maintain the P&ID revision archive and the transmittal log. Pathnovo pulls the latest two revisions on transmittal-trigger, runs the delta, and pushes the impact report back into the EDMS as a linked document to the transmittal record. See /integrations/wrench-smartproject and /integrations/oracle-aconex for the full partnership workflow.
A P&ID revision routinely cascades: datasheets need update, line lists change, instrument index changes, C&E matrix may need re-verification, HAZOP coverage may need re-review. Pathnovo identifies all downstream document impacts alongside the PO impact, producing a complete revision-impact register. The procurement team sees their impact; the engineering team sees theirs; the HSE team sees theirs. All from one upload.
P&ID revision-to-PO impact analysis is included on every paid tier. Each P&ID pair consumes credits proportional to drawing complexity (a complex P&ID = 20 credits per side of the diff). A single revision event fits comfortably inside Starter (1,000 credits/month) or Professional (5,000 credits/month). Ongoing projects with continuous revision tracking move to Scale (25,000+ credits) for unlimited revisions inside the credit pool. Free 14-day trial with 100 credits to validate on a real revision event before any commitment. See our pricing page for full plan details.
Upload your most recent P&ID revision event (Rev A and Rev B) plus your current open PO register (anonymised if needed). Pathnovo produces the impact report within 24 hours as a pilot deliverable. If the impact identified is not actionable or the accuracy is below 95%, you owe nothing. Most pilots identify $6,000 to $600,000 of previously-invisible procurement exposure on the first real revision event processed.
Pricing
Credit-based, full platform included on every paid tier. Continuous change-order activity typically runs on Scale.
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Pillar
MTR + MDR + MR + BOM + revision delta as one procurement automation suite.
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Pillar
The extraction layer that powers revision delta and PO impact analysis.
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Integration
Feed delta + impact data straight into Indian EPC's #1 EDMS.
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Integration
Deliver revision impact reports through the Aconex transmittal flow.
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Industry
Change-order cost recovery for EPC contractors handling brownfield revamps.
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Industry
Revision impact analysis for refinery turnaround procurement.
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Compliance
Management of Change documentation feeding IBR / OISD audit packages.
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It is the workflow of detecting what changed in a P&ID between two revisions, understanding the structural nature of each change (which tags were added, deleted, or modified), and immediately identifying every open purchase order that is now impacted by those changes. Historically this is done manually: an engineer compares two printed drawings, makes notes, emails procurement; procurement searches their open PO list manually; affected vendors are contacted individually. Turnaround is days to weeks, accuracy is poor, and many impacts are missed entirely until they surface as field errors. Pathnovo automates the end-to-end chain: upload two P&IDs, receive the affected PO list in under a minute, with structured delta, cost impact, and recommended action.
Three reasons. First, frequency: every EPC project goes through 4–12 P&ID revision cycles between FEED completion and construction start, plus additional MoC revisions during construction and commissioning. Second, scale: a major refinery revamp has 500–2,000 P&IDs and 10,000–50,000 open PO lines at any given moment. Third, cost: a single wrong-specification PO discovered at site installation triggers change orders, rework, and schedule slip measured in crores. Industry surveys routinely identify this as the #1 unresolved procurement problem in process-plant EPC. Hexagon Smart Materials addresses this for 3D-model-authored projects; AVEVA ERM likewise. Neither works on PDF-based P&ID revision workflows, which is how the majority of Indian and Gulf mid-EPC projects actually run. Pathnovo is the only option.
Every P&ID carries tag references: instrument tags, valve tags, line numbers, equipment tags. Every PO line carries a tag reference in its material description or in a structured tag field. Pathnovo's engine cross-references tag graphs: changed tags from the delta are matched against the active tags in the open PO register, with exact match where possible and specification-aware fuzzy match where naming conventions differ between engineering and procurement. Each match is validated and confidence-scored. The output is a structured table with changed tag, change type, affected PO number, affected PO line, current status, recommended action, and estimated cost impact.
Both. During detailed engineering, revision cycles are planned and the analysis runs at each IFR → IFA → IFC transition to validate that procurement has absorbed the correct scope. During construction, MoC-driven P&ID revisions run unplanned, and the analysis runs immediately on each MoC approval. During commissioning, HSE-driven or field-discovered P&ID updates trigger analysis to detect retroactive procurement impact. Each phase has its own integration pattern; Pathnovo supports all three.
Early pilots with Indian mid-EPC contractors are detecting $6,000-$600,000 of previously-invisible procurement exposure on the very first revision event processed. Aggregated across a 24-month project, structured revision-to-PO analysis typically recovers 1–3% of total procurement budget that would otherwise leak to change orders. On a $$60M-capex project, that is $600,000-1.8M of direct saving. The cost of the Pathnovo service is a rounding error against the saving; ROI is measured in days, not months.
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