P&ID Review Assistant

Every symbol, every page, cross-checked before the engineer opens it.

Upload legend sheets and P&ID pages. The system indexes your symbols, extracts tagged components, runs engineering rules, and returns a findings report with confidence scores.

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SeverityFindingRecommendationConfidence

HIGH
R-201No PSV or rupture disc shown on the synthesis reactor (347 °C / 200 bara, H₂/N₂)
Install a code-stamped PSV (and/or rupture disc) sized for fire and runaway-reaction cases, routed to flare.
HIGH
HIGH
R-201No emergency depressurization or quench/dump system shown on the reactor
Add an automated XV blowdown to flare, interlocked with high-T/high-P trips on TT-201/TT-202/PT-201.
HIGH
HIGH
T-201Separator T-201 operates near 50 bara — no relief device drawn on this sheet
Install a PSV on T-201 sized for blocked-outlet, external-fire and gas-blow-by cases, discharging to flare.
HIGH
HIGH
V-201Knock-out drum V-201 (50 bara) has no relief device shown
Add a PSV on V-201 sized for blocked-outlet and external-fire scenarios, routed to flare.
HIGH
HIGH
CWR headerCooling-water return collects from E-201/E-202/E-203 — tube-rupture path not protected
Provide a relief device on the CW return circuit per API 521 tube-rupture; add H₂ analyzer on CWR.
MEDIUM
MEDIUM
R-201Reactor vessel has no equipment tag visible — only instrument bubbles labelled
Add equipment tag (R-201) and service description next to the reactor symbol per ISA-5.1.
HIGH
MEDIUM
PT-201 / TT-201 / TT-202Reactor monitored by transmitters only — no PIC/TIC loops or trips shown
Add SIS interlocks (PSH/TSH) closing feed XV-210 and opening blowdown per IEC 61511.
MEDIUM
MEDIUM
E-201347 °C effluent cooled by 25 °C CW in single shell — high temperature approach, tube-rupture case present
Confirm exchanger duty and approach; consider intermediate heat recovery upstream of E-201.
MEDIUM
LOW
HV-211 / HV-213 / HV-215Manual + automated valves in series on each CW supply branch — duplicated isolation
Document double-block-and-bleed intent on the sheet, or add a return-side isolation valve per branch.
HIGH

5 HIGH · 3 MEDIUM · 1 LOW (visible)

€35.700 · 420h saved·per package

How It Works

Drawings in, structured findings out.

Upload

Step 01 — Input

Upload legend sheets and P&ID pages separately. PDF and PNG accepted.

Extract

Step 02 — Indexing & Extraction

The legend is indexed first: symbol definitions, tag naming conventions, ISA codes, line types, medium codes. Then each P&ID page is parsed for equipment, instruments, valves, lines, and control loops.

Review

Step 03 — Analysis & Findings

Engineering rules run against the extracted data. Output is a tabulated findings report — each item tagged with a confidence score.

Core Capabilities

What the system does with your drawings.

Legend & Symbol Indexing

Symbol Library

Your legend, not ours

Indexes symbol definitions, tag conventions, ISA codes, line types, and medium codes from your legend sheets. Per-project — no generic fallbacks.

Cross-referenced with every page

Indexed library is applied to every P&ID page for consistent extraction and rule checks.

Structured Extraction

Component Identification

Equipment, instruments, lines

Tag numbers, types, and locations. Line specs, flow direction, control loops, and page connectors.

Notes, holds & confidence scores

Notes and holds captured alongside extracted items. Every item tagged with a confidence score.

Rule-Based Findings

Automated Checks

Safety, isolation, and line specs

Missing PSVs, isolation gaps, interlock completeness, dead-end piping, line spec mismatches, missing insulation or material callouts.

Revision diff

Side-by-side comparison of two revisions: added/removed equipment, changed line specs, updated notes.

We will review your first P&ID for free

Send one P&ID page. Within 24 business hours we email you a sample findings list on your drawing. Manual processing, no upsell.

Try with your drawing

The review bottleneck

From Hours to Minutes

Manual Review

~390 manhours / 40 pages

Read each page

slow

List components manually

repetitive

Cross-check between reviewers

varies

Document findings in Excel

tedious

Varies by reviewerHours / Weeks

With P&ID Review Assistant

AI-Assisted Review

Same scope, fraction of the time

Upload legends + P&IDs

minutes

Extract all tagged components

per page

Run rules, score confidence

instant

Tabulated report delivered

immediate

Same checks, every timeMinutes

The Engineer Still Decides

Extraction, component listing, and rule checking are repeatable. The tool does those. The engineer handles what requires experience.

ROI Estimate

Estimated Engineering Hours Saved

Based on typical FEED-stage P&ID review effort: pages × engineers × hours per page × review cycles, reduced by the tool's extraction and rule-check automation rate.

Your Inputs

Pages per package

40 pages

Engineers per review cycle

3.5 engineers

Hours per page per engineer

1 hrs

Review cycles per package

10 cycles

Engineer hourly rate

85 €/hr

Manhour reduction

30 %

Live estimate

Estimated Savings

420

manhours saved — per package

€35.700

estimated cost savings

Baseline effort1400 manhours

Reduction rate30%

Hours saved420 manhours

At €85/hr€35.700

Indicative figures — actual values are determined per project during scoping.

You define safe. We map to it.

P&IDs are trade secrets. Before we talk controls, tell us what your IT, legal, and IP teams need to see. Common asks we’ve met: per-upload isolation, no model training, files deleted on delivery, EU-hosted processing, self-hosted deployment. The evidence below is what we can already point at.

No Model Training

Zero Retention

Uploaded drawings are never used to train models. Period.

Isolated Sessions

Per-Upload Isolation

Each upload runs in its own session. No data crosses between projects, clients, or users.

Deleted After Processing

Automatic Cleanup

Files are removed from processing servers once the report is delivered. Retention window configurable.

Encrypted & Authenticated

TLS/SSL + Your SSO

TLS/SSL in transit. Authentication via your existing sign-in. Every action logged for audit.

Full security posture, NIS2 control mapping, and subprocessors at /trust.

What Changes for Your Team

Concrete differences you will notice in the first review cycle.

Less Time on Extraction

Speed

Component listing and cross-referencing happen before the engineer opens the file.

Same Rules, Every Drawing

Consistency

Every page runs through the same check set. No variation between reviewers or sessions.

Confidence Scores

Traceable Findings

Each extracted item and finding has a confidence score. The engineer sees what to trust and what to double-check.

See three more▾

Nothing Skipped

Full Coverage

Fatigue and time pressure skip items. The tool does not. Every page, every tag, every rule.

Structured Excel Output

Usable Reports

Findings, equipment list, instrument list, process lines, notes and holds — tabulated in Excel, not buried in a PDF.

Your Legend, Not Ours

Per-Project

The indexer reads your project's symbol library and tag conventions. You upload the legend; the tool adapts.

What P&ID Review Assistant won’t do

Where the tool stops and the engineer takes over. On purpose.

Does not sign offEngineers stay in control: Confidence scores surface what to trust. Engineers still make the call.
No training on your drawingsIsolated sessions: Isolated sessions, files deleted on delivery. Your drawings never enter a shared training set.
No cross-project legend sharingProject-scoped index: Your symbols, your conventions, your index. Legends do not leak between clients or projects.

Mission

The Tool Extracts. The Engineer Decides.

Most of the ~390 manhours spent on a 40-page P&ID package is extraction and cross-referencing. Work that is repeatable and verifiable. The P&ID Review Assistant does that part: index the legend, list every tagged component, run the rules, score the confidence.

What it does not do: interpret context, weigh trade-offs, talk to the client, or sign off. That stays with the engineer.

Nusret Furkan
Co-Founder, ProcessEngineer.io

Frequently Asked Questions

PDF and PNG. Legend sheets and P&ID pages are uploaded separately. Each page is processed individually and cross-referenced against the indexed legend.

Your project's legend sheets. It extracts symbol definitions, tag naming conventions, ISA codes, line types, and medium codes. One indexed library per project.

Each finding has a confidence score. The engineer reviews flagged items and confirms or dismisses them. Final call is always the reviewer's.

Missing PSVs and rupture discs, dead-end piping, isolation valve gaps, interlock completeness, line spec mismatches, missing insulation callouts, and revision diffs. Rules are configurable per project.

Yes. Upload two revisions of the same drawing. The output shows added/removed equipment, changed line specs, updated notes, and new or resolved findings.

Isolated session per upload. Drawings are not used for model training. Files are deleted after the report is delivered. No third-party access.

See the Output on Your Own Drawings

Two ways in. Send 1 P&ID page and we email you a sample findings list within 24h, no call required. Or book a 30-minute call and we run it through the system live.

Book intro call Try with your drawing, 24h turnaround

Or watch the interactive demo →