FACILEX® ATOMIC

Credited Controls & Safety Functions Software for Nuclear Quality Assurance

Maintain a governed record of the controls, barriers and safety functions relied upon to prevent or mitigate nuclear safety consequences.

Connect each credited function to its safety basis, performance requirements, implementing equipment, verification activities and continuing operational status.

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The Challenge

A credited control matters only if its safety function remains capable.

Nuclear safety analyses rely on structures, systems, components, administrative controls and other protective measures to prevent or mitigate identified hazards and accident consequences.

The challenge is preserving the relationship between why a control is credited, the safety function it must perform, the requirements that define acceptable performance and the evidence demonstrating that the function remains available.

When safety-basis information, equipment records, surveillance requirements and operating status are managed independently, it becomes difficult to see when a change, impairment or emerging condition threatens an assumption on which the safety case depends.

Credited Controls & Safety Functions must answer:

What hazard or accident scenario requires protection?
What control or function is credited?
Why is that function important to safety?
What performance requirements must it satisfy?
What equipment, procedures or administrative controls implement it?
What evidence demonstrates that the credited function remains capable?

Why It Matters Now

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Safety functions become explicit

Document what each credited control is expected to accomplish rather than relying solely on equipment identification.

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Controls stay connected to hazards

Preserve traceability between hazards, accident scenarios, credited controls and resulting safety functions.

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Requirements remain visible

Maintain the performance criteria, limits, assumptions and conditions required for the credited function.

✓

Verification becomes evidence

Connect inspection, testing, surveillance and other verification activities to the function they support.

Degradation becomes actionable

Identify when impairment, equipment condition or other changes may challenge credited capability.

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Defense-in-depth becomes visible

Understand how individual controls contribute to the overall protection strategy for a hazard or facility.

Credited Controls & Safety Functions Lifecycle

A configurable lifecycle establishes why a control is credited, defines the safety function and performance requirements, verifies implementation and maintains continuing visibility of credited capability.

Identify

Identify the hazard, accident scenario or requirement requiring protection.

Classify

Establish the safety classification and basis for crediting the control.

Define Function

Define the specific preventive, protective or mitigative function required.

Establish Requirements

Define performance criteria, limits, assumptions and required conditions.

Verify

Confirm that implementing equipment and controls satisfy defined requirements.

Monitor

Maintain visibility of status, surveillance, impairments and emerging conditions.

Maintain

Preserve the credited function as configuration, requirements and conditions change.

Configured for the Way Your Program Operates

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Control & Function Classification

Configure safety classifications, control types and terminology appropriate to your facility and regulatory basis.

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Hazard-to-Control Traceability

Maintain relationships between hazards, accident scenarios, controls and the functions credited in the safety basis.

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Performance Requirements

Capture required capability, reliability, availability, environmental and other performance criteria.

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Implementing Equipment & Controls

Associate credited functions with structures, systems, components, procedures and administrative controls.

✓

Verification & Surveillance

Connect inspection, testing, surveillance and other verification activities to required safety performance.

Status & Impairment Awareness

Maintain visibility when conditions, impairments or changes may affect the capability of a credited function.

Regulatory & Program Anchors

Connect credited capability to its safety and regulatory basis.

10 CFR 50 Appendix A

10 CFR 50 Appendix B

10 CFR Part 52

ASME NQA-1

Safety Analysis / Safety Basis

Technical Specifications

Defense-in-Depth

Configuration Management

Credited Controls & Safety Functions Connect With

Credited capability sits at the center of the safety case.

FACILEX® ATOMIC connects the safety functions relied upon by the facility with their design basis, associated hazards, configuration changes and conditions that can affect their continuing capability.

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Design Basis Information Connect credited functions to the requirements and design information that support them.

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Hazard & Safety Case Trace controls to hazards, accident scenarios and safety-basis conclusions.

Bypass & Impairment Control Manage conditions in which credited capability is temporarily degraded or unavailable.

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Change Control Evaluate modifications that may affect credited functions or their requirements.

One application. Part of one connected management system.

FACILEX® Credited Controls & Safety Functions is one of 21 configurable applications within FACILEX® ATOMIC. Credited functions can remain connected to hazards, design-basis requirements, implementing equipment, verification activities, impairments and configuration changes throughout the facility lifecycle.

Explore all 21 FACILEX® ATOMIC applications →

See Credited Controls & Safety Functions in FACILEX® ATOMIC

Bring us your current process.

We can map your credited controls, safety functions, performance requirements, implementing equipment and verification activities to a configured FACILEX® ATOMIC process.