Functional Safety Services

Functional Safety Services cover the full lifecycle of keeping safety-critical industrial systems reliable and compliant , from identifying hazards to validating that safety systems perform as designed. This includes HAZOP/HAZID studies, SIL assessment and determination, Safety Requirement Specifications (SRS), safety validation and verification, RAMS studies, and Functional Safety Management documentation, all aligned to standards like IEC 61511 and ISO 26262.

A functional safety assessment (FSA) is a structured audit of a safety system across its lifecycle , design, implementation, operation, and modification , to confirm it delivers the required level of risk reduction. Arista Cyber conducts FSA 1 through FSA 5 assessments, each corresponding to a specific stage of the safety lifecycle, so gaps are caught before they become incidents.

In OT environments, a safety system failure isn't just a compliance issue , it can mean unplanned shutdowns, equipment damage, or harm to personnel. Functional safety ensures that protective systems like SIS (Safety Instrumented Systems) respond correctly when something goes wrong, keeping both people and production protected.

Timelines depend on scope and the FSA stage involved (1 through 5) , a single-system SIL assessment can take a few weeks, while a full lifecycle FSA across multiple safety systems takes longer. Arista Cyber scopes this with you upfront based on your facility's complexity.

Yes. Arista Cyber supports Functional Safety Services in Canada across Oil & Gas, Manufacturing, Energy & Utilities, and Mining , sectors where Canadian regulatory expectations and IT/OT convergence are creating new pressure on safety and compliance programs. Our team works directly with Canadian operators to bridge functional safety and cybersecurity without disrupting plant operations.

Functional safety focuses on preventing systems from failing in ways that cause harm , think SIS, interlocks, and emergency shutdown systems. Cybersecurity focuses on preventing unauthorized access or attacks. Arista Cyber integrates both, since a cyberattack on a safety system is itself a functional safety risk , this is the core of how we approach ISA/IEC 62443 compliance.

Any industry running safety-critical processes , Oil & Gas, Manufacturing, Energy & Utilities, Pharmaceuticals, Automotive, and Mining are the sectors Arista Cyber currently supports. Each has its own risk profile, from process safety in refineries to functional safety in automated production lines.

Our functional safety assessments and supporting documentation are aligned with IEC 61511 (process industry safety systems), ISO 26262 (automotive), and ISA/IEC 62443 where safety and cybersecurity intersect , ensuring your safety lifecycle documentation holds up to regulatory and audit scrutiny.