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FACILEX® ATOMIC

Hazard & Safety Case Software for Nuclear Quality Assurance

Identify hazards, evaluate accident scenarios and maintain the structured safety argument demonstrating how nuclear safety risks are prevented, controlled and mitigated.

Connect hazards and consequences with safety claims, credited controls, supporting evidence and residual risk throughout the facility lifecycle.

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A safety case must remain valid as the facility changes.

Nuclear safety depends on understanding the hazards associated with a facility, the accident scenarios that can result and the controls relied upon to prevent or mitigate unacceptable consequences.

The challenge is maintaining the chain of reasoning between hazards, assumptions, analyses, safety claims, credited controls and supporting evidence. That information is often distributed across studies, calculations, reports and individual engineering disciplines.

As the design, operating configuration, regulatory basis and understanding of hazards evolve, the organization must be able to determine whether the assumptions and controls supporting the safety case remain valid.

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Hazard & Safety Case must answer:
  • What hazards are present?
  • What accident scenarios and consequences are credible?
  • What assumptions underpin the analysis?
  • What controls and safety functions are credited?
  • What evidence demonstrates that the safety claims are valid?
  • What residual risk remains and how is it accepted?
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Hazards become structured information

Maintain a consistent record of hazards, initiating events, scenarios and potential consequences across the facility.

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Scenarios stay connected to controls

Trace accident scenarios to the preventive and mitigative controls relied upon by the safety analysis.

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Safety claims become explicit

Document what is being claimed about safety and the basis on which that claim is supported.

✓

Evidence supports the argument

Connect calculations, analyses, design information and verification evidence to the claims they support.

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Residual risk remains visible

Document evaluated risk, acceptance decisions and the controls required to maintain acceptable conditions.

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The safety case can evolve

Identify when changes, events or new information may challenge assumptions or conclusions in the existing case.

A configurable lifecycle connects hazard identification and accident analysis with safety claims, credited controls, supporting evidence, approval and continuing maintenance of the safety case.

1
Define
Establish scope, boundaries, assumptions and applicable safety criteria.
2
Identify
Identify hazards, initiating events and potential accident scenarios.
3
Analyze
Evaluate scenarios, consequences, frequencies and relevant uncertainties.
4
Evaluate
Compare results with applicable safety criteria and risk objectives.
5
Establish Controls
Identify credited preventive and mitigative controls and safety functions.
6
Demonstrate
Assemble evidence supporting safety claims, controls and conclusions.
7
Approve
Complete required technical review, acceptance and authorization.
8
Maintain
Reassess the safety case as configuration, hazards and requirements change.
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Hazard & Scenario Registers

Configure hazard types, initiating events, scenarios, consequences and analysis attributes for your facility.

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Safety Claims & Arguments

Structure safety claims, supporting arguments, assumptions and the evidence required to substantiate them.

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Credited Control Relationships

Connect hazards and accident scenarios directly to credited controls and required safety functions.

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Risk Evaluation

Configure consequence, likelihood, risk-ranking and acceptance criteria appropriate to the safety program.

✓

Evidence & Assurance

Associate calculations, analyses, verification records and other evidence with the claims they support.

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Safety Case Maintenance

Trigger review when changes, events, new hazards or updated requirements may affect existing conclusions.

Connect safety conclusions to the evidence that supports them.

The safety case depends on connected information.

FACILEX® ATOMIC connects hazards and safety conclusions with credited controls, design basis information, facility risk and the change processes capable of affecting those conclusions.

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Credited Controls & Safety Functions Connect accident scenarios to the controls and functions credited for protection.
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Design Basis Information Connect safety claims and assumptions to supporting design requirements and analyses.
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Integrated Risk Register Escalate significant residual and emerging risks into enterprise visibility.
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Change Control Evaluate proposed changes for potential impact on safety-case assumptions and conclusions.

One application. Part of one connected management system.

FACILEX® Hazard & Safety Case is one of 21 configurable applications within FACILEX® ATOMIC. Hazards and accident scenarios can remain connected to credited safety functions, design requirements, residual risks and configuration changes, helping the safety case remain aligned with the evolving facility.

Bring us your current process.

We can map your hazard analyses, accident scenarios, safety claims, credited controls, supporting evidence and risk-acceptance criteria to a structured FACILEX® ATOMIC safety case.