One platform for the whole analysis lifecycle
From the first gate to a defensible result, NextPSA covers modeling, scenario analysis, quantification, verification, automation and collaboration — across fault trees and event trees, all in the browser.
Fault Tree Analysis
Model gates, basic events, house events and common-cause failures, with real-time preview quantification as you build.
Event Tree Analysis
Construct branching scenarios from initiating events through to outcomes and full risk propagation.
Profile-based scenarios
Override parameters and configurations per scenario without altering your trusted base model.
Project containers
Assemble individual models into compound studies with cross-model search, per-member profiles and batch quantification.
Results dashboard
Explore minimal cutsets, importance measures, reliability curves and critical paths, with Excel export for reporting.
Automated verification
Model checking detects errors and warnings automatically after every modification.
Automation pipelines
Script staged, multi-step analysis runs with a dedicated pipeline editor — repeatable studies instead of manual clicking.
Legacy migration
Import existing work, including a dedicated converter that migrates legacy databases into platform models.
Secure cloud repository
Upload, organise and manage models centrally with controlled sharing and versioning.
Fault & Event Tree editors
An intuitive editor for building rigorous models — fault trees for component-level failure logic, event trees for system-level scenarios.
- Gates, basic/house events and CCF groups
- Initiating events, branches and outcomes
- Real-time preview quantification while editing
- Reusable elements across models
Profile-based scenario analysis
Explore configuration changes and what-if scenarios with profiles — each derived from one trusted base model, which is never altered.
- Override element parameters per scenario
- Per-member profiles inside project containers
- Compare scenarios side by side
- Single source of truth, many independent results
A proven engine — and mathematics you can defend
Quantification runs on XFTA, the recognised fault-tree engine of the AltaRica Association. Get instant feedback while editing, run official computations as traceable asynchronous tasks — and handle phase-dependent mission times with rigorous cutset mathematics, where naive approaches can be wrong by orders of magnitude.
- Immediate mode for in-editor feedback, official mode for defensible results
- Per-phase mission times on function events, with dedicated distributions
- Common-cause failure groups and analysis cases
- Asynchronous task view with logs and downloadable results
Analytical results dashboard
Turn quantification into insight. Visualise cutsets, importance measures, reliability curves and critical failure paths to improve traceability and stakeholder communication.
- Minimal cutsets and dominant contributors
- Importance measures, reliability curves and critical paths
- Excel export for review-friendly reporting
Automated model verification
Every change is checked automatically, so structural errors and inconsistencies surface immediately — not during a late review.
- Continuous consistency checking
- Clear errors and warnings with context
- More defensible, audit-ready models
Secure cloud repository
Keep models centralised and shareable. Organise projects, control access and track versions — all on secure, EU-based infrastructure.
- Central, organised model storage
- Controlled sharing and versioning
- SSL-encrypted, EU-hosted data
Prefer to run everything locally?
NextPSA Desktop runs the same platform entirely on the user's machine, with licensing designed for offline and air-gapped environments — built for the strictest requirements in nuclear and defense. The platform is available in English, French, German, Spanish and Italian.
See it on your own models
Book a guided demo with one of our specialists — free academic licenses available.