Lifecycle safety model management

The Living Blueprint of Your System's Safety.

Go beyond static risk registers. Bowtie Modeler is the only Bowtie risk management SaaS that fully links to your project timeline, offering Git-style version control and complete lifecycle traceability—from early-stage design to operational entry into service.

Open Bowtie Modeler View lifecycle model

Bowtie Modeler application running in browser showing Bowtie risk model with Gas Leak hazard, barriers and consequences

01 The lifecycle journey

Hazards evolve. The safety model must evolve with them.

Bowtie Modeler treats the hazard profile as a continuous data object, not a handover document. Risks transfer from Safety in Design to Construction Hazard Registers, then into commissioning evidence and safe entry into service views.

Design

Capture credible hazards, design assumptions, control intent and custom attribute schemas while the system architecture is still changing.

Construction

Transfer residual hazards into construction registers with precise ownership, mitigation status and project-stage traceability.

Commissioning

Link tests, barriers, version baselines and integration milestones so reviewers see exactly what changed before entry into service.

Operations

Carry the Bowtie into live operation, tracking degradation signals, barrier health and risk posture for existing critical infrastructure.

02 Feature showcase

Modern safety assurance, engineered like critical software.

Static diagrams cannot survive real projects. Bowtie Modeler combines Bowtie modelling, revision control, data exports, safety matrices and operational signals in one governed SaaS environment.

Comprehensive model creation

Full Bowtie creation with project-specific data schemas.

Define threats, top events, controls, consequences, escalation factors, custom attributes and safety stereotypes without reducing the model to a drawing canvas.

Bowtie Modeler Bowtie model with threat controls, barriers and consequences

Engineering-grade revision control

Branch, merge and baseline safety models.

Apply software engineering rigor to safety assurance. Explore options on project branches, compare changes, merge approved controls and freeze baselines for governance gates.

Bowtie Modeler Bowtie detail showing consequences and mitigations

In-operations monitoring

Turn Bowties into live operational assets.

Monitor degradation signals, barrier health and existing infrastructure risk posture after handover. The safety case remains active when the asset enters service.

Bowtie Modeler application running on laptop for operational monitoring

Data portability and analytics

PowerBI-ready data, custom matrices and automated reports.

Export structured safety data, produce regulatory documents automatically and preserve deep traceability from risk cell to model object, evidence package and revision history.

Bowtie Modeler custom risk matrix definition modal for analytics and reporting

03 Under the hood

A rigorous safety database, not a drawing tool.

Bowtie Modeler aligns with MBSE principles: model objects have identity, state, relationships, revision history and lifecycle context. The diagram is a visualization of governed data.

Single source of truth for complex hazard registers.

Systems engineers need deterministic traceability. Every hazard, barrier, risk matrix cell, document output and operational signal resolves back to a structured model object.

Object-level traceability across design, construction, commissioning and operations.

Custom safety matrices and attribute schemas per project or client.

Revision-controlled model states for evidence-driven assurance reviews.

Data exports designed for analytics, dashboards and regulatory reporting.

{
  "hazard": "gas_leak",
  "stage": "commissioning",
  "barriers": [
    { "id": "B-104", "health": "degraded" },
    { "id": "B-118", "health": "available" }
  ],
  "risk": {
    "matrix": "critical_risk_matrix",
    "likelihood": "likely",
    "severity": "major",
    "rating": "high"
  },
  "traceability": {
    "branch": "entry-into-service",
    "baseline": "pre-ops-gate"
  }
}

Critical Risk Matrix

UnlikelyRemoteOccasionalLikelyFrequent

LLLMMLLMMHLMMHHMHHEEMHHEE

NegligibleMinorModerateMajorCatastrophic

Structured risk matrix model with system element relationships

04 Deploy Bowtie Modeler

Start modelling safety that survives the real project.

Deploy Bowtie Modeler on your next design review, staged integration, or operational handover. No legacy diagrams, no spreadsheet traceability gaps.

Try Bowtie Modeler