The drawing
A P&ID, and the plant it describes
It arrives as PDF or DWG. TechPHA reads equipment, instruments, valves and lines from it, and infers nothing about hazards until an engineer starts the study.
AI assisted HAZOP
Your P&ID in.
An AI structured HAZOP out.
Upload your process drawings and let TechPHA assist the study while the engineer stays in control of every decision.
- Free tier
- One complete study
- Method
- HAZOP · IEC 61882
- Every finding
- Engineer approved
AMINE REGENERATION UNIT/P&ID-2201-A
REV 3DETECTION LAYER
AI analysis complete
Equipment12
Instruments18
Valves21
Safeguards7
V-10196%
Separator
Engineer review required
What a study is
The drawing, the study, the record.
A HAZOP is a room full of engineers arguing about what happens when a parameter deviates. TechPHA sits inside that, not in front of it.
Extraction
Every tag, with its confidence
Pumps, vessels, exchangers, transmitters, control valves. Each one is proposed with a confidence score and a review status, and none of it counts until somebody says so.
The study
Where every finding is argued and approved
Nodes, deviations, causes, consequences. TechPHA proposes; the team decides. The workshop is still a room full of engineers disagreeing with each other.
Safeguards
What already protects the plant
Relief valves, trips, alarms and procedures, all recorded against the deviations they answer, so the gaps are the ones nothing covers rather than the ones nobody wrote down.
LOPA
Independent layers, and the band that follows
Where a worksheet is not enough, LOPA takes the independent protection layers and computes the SIL band from them, with the credit for each layer shown rather than assumed.
The record
What has to stand up later
The worksheet, the LOPA, the safeguards and the approvals stay together as one study, with the revision history a regulator or an auditor will ask for.
How it works
From drawing to
structured HAZOP
Five stages, one continuous study record. Each one leaves something behind, and the engineer decides what advances.
A P&ID goes in as PDF or DWG. Nothing is inferred from it yet.
What goes in
This is the document a HAZOP argues over.
Equipment, instruments, valves, lines and the connections between them. TechPHA reads it, proposes what to study, and leaves every judgement to the engineer holding the pencil.
P&ID analysis
Your P&ID becomes
the starting point.
TechPHA assists in detecting equipment, instruments, valves, process lines, connections and potential safeguards, then hands each finding to the engineer with its confidence and review status.
EXTRACTED TAGS · 12 OBJECTSDETECTING
P-101Centrifugal Pump98%
V-101Separator96%
PSV-101AI CONFIDENCE 91%
Pressure Safety Valve
Engineer Review Required
PT-102Pressure Transmitter94%
FV-101Flow Control Valve89%
AI assisted HAZOP
AI assists the study.
The engineer decides.
AI GeneratedEngineer Approved
PHA WorksheetNODE 2 · FEED TO SEPARATOR V-101
DeviationCauseConsequenceSafeguardRecommendation
No FlowFeed pump P-101 tripLoss of feed to separatorFAL-101Auto start standby pump on low flow
● AI Generated
● AI Generated
High PressureBlocked outlet downstream of V-101Overpressure of separatorPSV-101Verify PSV sizing for blocked outlet
● Engineer Approved
● Engineer Approved
Low LevelExcess draw off via LV-101Gas blow by downstreamLAL-103Low level interlock to close LV-101
● Under Review
● Under Review
AI GeneratedUnder ReviewEngineer ModifiedEngineer ApprovedEvidence, confidence and approval history preserved at every step.
The workspace
One workspace for
the complete study.
Nodes, deviations, worksheets, LOPA, safeguards, recommendations and your own risk criteria live in one study record, then leave as a professional report.
ExportPDFWordExcelFree plan previews the report
Study-0043
Study Data
P&IDs
Nodes
Deviations
PHA Worksheets
LOPA Worksheets
Check Lists
Recommendations
Safeguards
Risk Criteria
Reports
Study progress6 NODES · 6 DEVIATIONS
Node 2 · Feed to separator V-101COMPLETE
Node 3 · Separator to regen columnNOT STARTED
Node 4 · Reboiler circuitNOT STARTED
3
Recommendations
11
Safeguards
5×5
Your risk matrix
Data & access
Where the drawings and the findings live.
A study keeps the evidence, the confidence and the approval history behind every finding, and the workspace decides who can open it.
- Documents
- Drawings stay with the workspace that uploaded them.
- AI requests
- Go through the TechPHA backend, never straight from the browser.
- Credentials
- Never reach the browser.
- Studies
- Access controlled, so a study opens only for its own team.
- Audit records
- Maintained as the study advances, with approvals attributed.
Start free.
Upgrade when
TechPHA earns it.
Run your first complete AI-assisted HAZOP study free. Upgrade when you need more studies, collaboration or professional report exports.
Basic
Free/ one study
For a first complete study
- 1 complete HAZOP / PHA study
- P&ID upload, so the drawings sit with the study
- Nodes, deviations, causes and consequences, recorded by your team
- Safeguards and recommendations registers
- Configurable risk assessment
- HAZOP report preview
- Study saved to your account
- AI-assisted analysis locked
- Report export locked
- LOPA worksheets and check lists locked
- No team collaboration
Start Free
No credit card required
Professional
MOST POPULAR$59/ month
For engineers running studies continuously
- Up to 10 active studies
- Full HAZOP workflow, within fair platform usage limits
- P&ID upload and AI-assisted analysis
- AI-assisted nodes, deviations, causes and consequences
- AI-assisted safeguards and recommendations
- Full risk assessment
- LOPA worksheets with the SIL band computed, and check lists
- Study history, revisions and audit history
- Professional reports with PDF, Word and Excel export
Start Professional
Cancel anytime
Team
$199/ month
For teams running studies together
- Everything in Professional
- Up to 5 users and 50 active studies
- Shared company workspace and team collaboration
- Engineer, reviewer and facilitator roles
- Centralised study management
- Shared risk matrices and company templates
- Team audit history and company-level settings
- Higher AI usage allowance
Enterprise
Custom
For multi-site organisations
- Everything in Team
- Custom users, study limits and AI usage
- Multiple teams and departments
- Company-specific risk matrices
- Organisation administration and advanced access controls
- Custom report templates
- Priority support and onboarding
- Enterprise security options and custom integrations
Plan comparison
BasicProfessionalTeamEnterprise
Studies1 lifetime10 active50 activeCustom
Users115Custom
P&ID uploadIncludedIncludedIncludedIncluded
AI-assisted HAZOPNoIncludedIncludedIncluded
LOPA and check listsLockedIncludedIncludedIncluded
Report previewIncludedIncludedIncludedIncluded
Report exportLockedPDF, Word, ExcelPDF, Word, ExcelPDF, Word, Excel
Team collaborationNoNoIncludedIncluded
Prices in USD, excluding any applicable tax. TechPHA assists the study; the engineer reviews and approves every finding.
Your next HAZOP can start with the P&ID.
One complete study, free, with no card. Upload a drawing and see what TechPHA proposes before you decide whether it belongs in your workflow.
