More than a tool. A modern risk analysis platform.
Build fault trees and event trees, quantify them on a proven analysis engine, and collaborate from any browser. NextPSA is a modern probabilistic safety analysis platform for complex systems — the complete PSA workflow, from the first gate to a defensible, traceable result.
Built for the people who keep critical systems safe and dependable
Professional rigor, in a modern cloud platform
NextPSA brings probabilistic safety analysis together in one modern, cloud-native platform: accessible from any browser, quantified on a proven engine, and built for teams to work together.
Work from anywhere
A full risk modeling and analysis environment in the browser. Nothing to install, configure, or maintain — open a link and start modeling.
Every model in one place
Fault trees, event trees, project containers and profiles — all in a single, consistent environment.
Quantification, two speeds
Immediate quantification gives instant feedback as you edit; official runs execute asynchronously on the proven XFTA engine and produce traceable cutset results.
Verification built in
Automated model checking flags errors and inconsistencies after every change — accuracy you can defend in a review.
Team collaboration
A secure cloud repository keeps models centralised with controlled sharing and versioning across your team.
Secure by design
All traffic is SSL-encrypted and data is hosted on secure, EU-based servers. On-premise deployment available.
Everything a risk analysis workflow needs
Fault & event trees, one editor
Model component-level failure logic and system-level accident scenarios without switching tools — fault trees and event trees share the same modern editor, with reusable elements across models.
- Gates, basic and house events, and CCF groups
- Initiating events, branches and outcome sequences
- Real-time preview quantification while you edit
Quantification you can defend
Official runs execute on XFTA, the recognised fault-tree engine of the AltaRica Association — including phase-dependent mission times, where naive approaches can be wrong by orders of magnitude.
- Per-phase mission times on function events
- Common-cause failure groups and analysis cases
- Asynchronous runs with logs and downloadable results
Results dashboard & verification
Quantify, then explore cutsets, importance measures, reliability curves and critical paths in an analytical dashboard — while automated consistency checks keep every model defensible.
- Minimal cutsets and importance measures
- Reliability curves and Excel export
- Automatic error & warning detection
From single models to full studies
Assemble individual models into project containers, explore variants with profiles, and quantify an entire study in one batch — with automation pipelines to script multi-stage runs.
- Project containers that assemble compound studies
- Profiles for what-if variants without touching the base model
- Batch quantification and scriptable automation pipelines
Ready to modernise your risk analysis workflow?
Book a 30-minute demo to see how NextPSA fits your safety and risk projects — or talk to us about licensing. Free academic licenses available.