Functional Safety Assessment

Validating Equipment Safety Integrity

Functional Safety Assessments gives clarity at every stage of the functional safety lifecycle.

They can review the proposed safeguards, verify they’re suitable, and check they meet the required level of protection, all before a spade hits the ground or a control panel is wired in.

After installation, they confirm what has been installed matches what was designed, and protects against what it needs to.

What a Functional Safety Assessment Covers

Functional safety assessments don’t replace hazard studies like HAZOP or LOPA, they build on them. They’re the formal review steps that check everything you’ve identified, calculated, and designed still holds up before moving forward.

Whether you're assessing a concept-stage proposal or verifying a final installation, our FSAs provide independent, experienced insight into your risk reduction approach.

At its core, a FSA asks: “Are we doing the right thing, and are we doing it right?” The FSA process aims to deliver:

Hazard Study Review

We check the foundations, whether the HAZOP, LOPA, or other hazard studies have been done properly, with sufficient detail and traceability into design decisions.

SIL Justification & Risk Targeting

We confirm that Safety Integrity Levels (SILs) have been correctly applied, based on actual risk, not guesswork. This includes reviewing how LOPA figures were determined and if tolerable risk levels were set appropriately.

Design & Specification Alignment

Does your design reflect your findings? We assess whether the Safety Requirements Specification (SRS) is complete, accurate, and achievable in practice, with clear links back to the hazards identified.

People, Process & Documentation

Functional safety relies on more than components. We check whether testing intervals are realistic, operator actions are clearly defined, and maintenance plans are in place.

Independence & Integrity

An FSA must be conducted by someone not involved in the original design. That’s where we come in, offering a critical eye without the internal bias, to ensure compliance with IEC 61511 and good engineering practice.

Aislin, Sarah and Jack disucssing findings

Why FSA Matters

Functional Safety Assessments give you confidence in your systems, your assumptions, and your safety strategy.

They catch gaps before they become failures, and they demonstrate due diligence to regulators and stakeholders alike.

When you’re dealing with interlocks, SIL-rated systems, or safety-critical controls, it's important to demonstrate safeguards will work, every time.

When Functional Safety Assessments Happen

Functional safety isn’t a one-off tick-box. It’s a lifecycle, and FSAs take place at critical points throughout that journey.

Each stage is a chance to confirm the system still does what it’s meant to do, and that your people can trust it to respond when it matters most.

A Collaborative, Practical Approach

We work with your engineers, designers, and operators to assess systems in the real-world context they’re used in.

That means sharper insights, fewer assumptions, and better results for the people who rely on them every day.

We support FSAs across the full lifecycle

Early concept and hazard identification
Detailed design and SIL determination
System integration and hardware/software implementation
Operation and maintenance planning
Late-stage modifications and decommissioning

Get In Touch

Ready to review your safety systems or schedule a Functional Safety Assessment? Get in touch to talk through where you are in the lifecycle, and how we can support.

Get In Touch