Functional Safety Assessment and Services

Critical Systems Analysis
Critical Systems Analysis

"Functional Safety Assessment & Services" is a serial video course from Critical Systems Analysis, published weekly in strict curriculum order — building from foundational terms and structure through lifecycle practice to advanced, assessor-level topics. Designed for working functional-safety engineers and managers, not beginners or students. Critical Systems Analysis (CSA) is a functional safety, reliability, and certification consultancy serving robotics, autonomous systems, transportation, and industrial equipment manufacturers. CSA provides end-to-end safety engineering services: preliminary gap analyses and safety audits, SIL/PL determination, FMEA and FMEDA execution, fault tree analysis, safety case development, hardware metrics (SPFM/LFM/PMHF), lifecycle documentation, and embedded safety engineering support. CSA engineers work alongside product teams from architecture through final functional safety assessment, and support companies seeking NRTL, CE, ATEX, ISO 26262, and UL 4600 marks. Contact: Sales@criticalsa.com. This series is part of the CSA Functional Safety Network — a coordinated set of weekly video courses covering IEC 61508, ISO 26262, ISO/SAE 21434, SOTIF (ISO 21448), UL 4600, IEC 62443, ISO/PAS 8800, ISO 13849, machinery safety, safety analysis methods, and more. Each show links to the others so practitioners can follow the thread that matches their project.

Episodes

  1. 22 Aug

    Functional Safety Assessment (FSA): What to Expect

    Ever wondered what happens during a Functional Safety Assessment? In this episode, we'll walk you through F-S-A—a structured evaluation designed to ensure your systems meet rigorous safety standards. Whether you're managing embedded systems, safety-critical applications, or industrial equipment, understanding the F-S-A process helps you prepare effectively and avoid surprises. Part of the Critical Systems Analysis functional-safety series on Assessment and Services. In this episode: Welcome to our micro-lecture on Functional Safety Assessment.F-S-A stands for Functional Safety Assessment.Why does F-S-A matter to your organization? The assessment reduces risk of safety-critical failures, demonstrates compliance to regulators and customers, and identifies gaps before they become costly problems.The F-S-A process follows a clear, structured flow: planning and kickoff, detailed system review and analysis, compliance testing against your requirements, gap remediation, and the final assessment report.Successful preparation requires both the right team and comprehensive documentation.Assessors focus on four core evaluation areas.Reference: Functional Safety Assessment (FSA) gates FSA-1 through FSA-4 are defined in IEC 61508-3 clause 7.4 as assessment stages across the Overall Safety Lifecycle More in this series: IEC 61508 — Functional Safety Foundations | Functional Safety Assessment and Services Explore more from Critical Systems Analysis. Work with us | LinkedIn | criticalsystemsanalysis.com All shows on Apple Podcasts: AI & ML Safety | Fault Tree Analysis | FS Assessment | Safety Analysis | IEC 61508 | IEC 62443 | ISO 10218 | ISO 12100 | ISO 13849 | ISO 26262 | ISO/PAS 8800 | ISO 26262-11 | V-Model | UL 4600.

    Functional Safety Assessment (FSA): What to Expect

  2. 22 Aug

    Planning FSAs Across the Lifecycle (FSA-1 to FSA-4)

    Functional Safety Assessment is not a single event—it is four strategic gates planted along your safety lifecycle. Part of the Critical Systems Analysis functional-safety series on Assessment and Services. In this episode: Almost everything in functional safety hangs off one spine: the safety lifecycle.F-S-A one happens early: at concept and hazard analysis.F-S-A two arrives at safety requirements.F-S-A three checks the design and build.F-S-A four closes the loop: installation and commissioning.Here is where the discipline lives: F-S-A one through four run gate by gate down your lifecycle.Reference: FSA gates align with IEC 61508-1 Overall Safety Lifecycle phases: concept, hazard and risk analysis, safety requirements, allocation, realization, installation/commissioning, operati More in this series: Explore more from Critical Systems Analysis. Partner with usFollow on LinkedInVisit our websiteRead our feature on Automate.orgAll shows on Apple Podcasts: AI & ML Safety | Fault Tree Analysis | FS Assessment | Safety Analysis | IEC 61508 | IEC 62443 | ISO 10218 | ISO 12100 | ISO 13849 | ISO 26262 | ISO/PAS 8800 | ISO 26262-11 | V-Model | UL 4600.

    Planning FSAs Across the Lifecycle (FSA-1 to FSA-4)

  3. 22 Aug

    Functional Safety Audit vs Assessment: The Difference

    In functional safety, audit and assessment get confused constantly. But they're fundamentally different activities. Under IEC 61508 and related standards, audits verify that you're following established safety procedures and meeting compliance requirements. That's compliance verification at its core. Part of the Critical Systems Analysis functional-safety series on Assessment and Services. In this episode: This episode explores a critical distinction in functional safety management.An audit is a structured, systematic examination of your safety management system.An assessment is a deeper evaluation of your safety system's maturity and capability.Here are the key distinctions.Timing matters.In practice, both play roles.Reference: IEC 61508-1:2010 Section 5 defines Functional Safety Assessment (FSA) as the systematic, independent examination of functional safety-related processes and their outcomes to determ More in this series: ISO 12100 — Machinery Risk Assessment | ISO 13849 — Machinery Safety and Performance Levels Explore more from Critical Systems Analysis. Partner with usFollow on LinkedInVisit our websiteRead our feature on Automate.orgAll shows on Apple Podcasts: AI & ML Safety | Fault Tree Analysis | FS Assessment | Safety Analysis | IEC 61508 | IEC 62443 | ISO 10218 | ISO 12100 | ISO 13849 | ISO 26262 | ISO/PAS 8800 | ISO 26262-11 | V-Model | UL 4600.

    Functional Safety Audit vs Assessment: The Difference

  4. 22 Aug

    Functional Safety Verification: Methods and Evidence

    Functional safety verification is the systematic evidence-gathering process that proves a safety system meets its requirements and will perform safely under all operating conditions. In regulated industries—automotive, medical, industrial control—verification isn't optional; it's mandated by standards like ISO 26262 and IEC 61508 . Part of the Critical Systems Analysis functional-safety series on Assessment and Services. In this episode: Functional safety verification is the cornerstone of any credible safety management system.Functional safety verification means rigorously checking that a safety system meets its requirements and will perform its intended safety function under all foreseeable conditions.Engineers employ multiple complementary verification methods.The verification cycle flows from requirements definition through method selection, evidence generation, documentation, and review.Verification evidence takes two principal forms: qualitative and quantitative.Verification rigor escalates with risk.Reference: IEC 61508-1:2010 Clause 7.4 defines the Overall Safety Lifecycle, including verification as a mandatory phase: verification confirms that the design correctly implements the safety More in this series: The V-Model and Safety Lifecycle Explore more from Critical Systems Analysis. Partner with usFollow on LinkedInVisit our websiteRead our feature on Automate.orgAll shows on Apple Podcasts: AI & ML Safety | Fault Tree Analysis | FS Assessment | Safety Analysis | IEC 61508 | IEC 62443 | ISO 10218 | ISO 12100 | ISO 13849 | ISO 26262 | ISO/PAS 8800 | ISO 26262-11 | V-Model | UL 4600.

    Functional Safety Verification: Methods and Evidence

  5. 22 Aug

    How to Scope a Functional Safety Consulting Engagement

    Scoping a functional safety consulting engagement is the critical first step that determines project success. In this episode, we'll walk through how to define clear boundaries, identify stakeholder needs, and align on standards like ISO 26262 or IEC 61508 . Part of the Critical Systems Analysis functional-safety series on Assessment and Services. In this episode: Functional safety scoping sets the foundation for a successful engagement.The scoping process follows a logical sequence.Five critical questions drive effective scoping.Defining scope boundaries prevents misunderstandings later.Every engagement involves multiple stakeholders with different concerns.Standards vary by industry and application.Reference: Functional Safety Assessment (FSA) is defined in IEC 61508-4 as an independent evaluation of functional safety achievement. FSAs may be conducted at multiple lifecycle phases: FSA- More in this series: ISO 12100 — Machinery Risk Assessment | ISO 13849 — Machinery Safety and Performance Levels Explore more from Critical Systems Analysis. Partner with usFollow on LinkedInVisit our websiteRead our feature on Automate.orgAll shows on Apple Podcasts: AI & ML Safety | Fault Tree Analysis | FS Assessment | Safety Analysis | IEC 61508 | IEC 62443 | ISO 10218 | ISO 12100 | ISO 13849 | ISO 26262 | ISO/PAS 8800 | ISO 26262-11 | V-Model | UL 4600.

    How to Scope a Functional Safety Consulting Engagement

  6. 22 Aug

    Independent Functional Safety Assessment: Why and When

    When developing safety-critical systems, independent functional safety assessment isn't optional—it's foundational to regulatory compliance. This lecture explores why organizations engage third-party functional safety experts and precisely when in the development lifecycle those assessments must occur. Part of the Critical Systems Analysis functional-safety series on Assessment and Services. In this episode: Independent functional safety assessment forms a critical checkpoint in safety-critical system development.Independent assessment provides several irreplaceable benefits.Assessment timing follows a structured sequence.Independent assessments evaluate both the product and your process.Assessment rigor scales with system risk level.Successful assessment requires coordinated effort across four distinct roles.Reference: IEC 61508-1:2010 Clause 7.4.8.2 defines assessment as an independent evaluation of whether a safety system conforms to the safety requirements specification and safety integrity le More in this series: ISO 12100 — Machinery Risk Assessment | ISO 13849 — Machinery Safety and Performance Levels Explore more from Critical Systems Analysis. Partner with usFollow on LinkedInVisit our websiteRead our feature on Automate.orgAll shows on Apple Podcasts: AI & ML Safety | Fault Tree Analysis | FS Assessment | Safety Analysis | IEC 61508 | IEC 62443 | ISO 10218 | ISO 12100 | ISO 13849 | ISO 26262 | ISO/PAS 8800 | ISO 26262-11 | V-Model | UL 4600.

    Independent Functional Safety Assessment: Why and When

  7. 22 Aug

    Functional Safety Testing for Safety-Critical Systems

    Safety-critical systems demand rigorous testing to prevent failures that could cause harm. Functional safety testing—the systematic evaluation of hardware and software under both normal and failure conditions—ensures that systems meet their assigned safety integrity level. Part of the Critical Systems Analysis functional-safety series on Assessment and Services. In this episode: Functional safety testing validates that safety-critical systems reliably prevent hazardous failures.Safety assurance follows a structured hierarchy defined by Safety Integrity Level, or SIL.The V-model testing approach mirrors system design: specification flows down the left side to implementation, while verification and testing flow up the right.Functional safety testing spans four complementary approaches.Assessment and Services standards require independent verification: a qualified assessor must review test evidence and system design to confirm they meet SIL claims.Critical test metrics drive assessment decisions.Reference: Functional Safety Assessment (FSA) in IEC 61508-7 is divided into four lifecycle gates: FSA-1 (concept phase), FSA-2 (requirements phase), FSA-3 (implementation phase), and FSA-4 ( More in this series: The V-Model and Safety Lifecycle Explore more from Critical Systems Analysis. Partner with usFollow on LinkedInVisit our websiteRead our feature on Automate.orgAll shows on Apple Podcasts: AI & ML Safety | Fault Tree Analysis | FS Assessment | Safety Analysis | IEC 61508 | IEC 62443 | ISO 10218 | ISO 12100 | ISO 13849 | ISO 26262 | ISO/PAS 8800 | ISO 26262-11 | V-Model | UL 4600.

    Functional Safety Testing for Safety-Critical Systems

  8. 22 Aug

    Industrial Functional Safety: The Standards Landscape

    Industrial systems power our world, but when they fail, people get hurt. Functional safety is the discipline that prevents those failures through careful assessment, rigorous standards, and systematic control. Whether you're designing machinery, building process control systems, or developing automotive electronics, functional safety standards provide the roadmap for managing risk. Part of the Critical Systems Analysis functional-safety series on Assessment and Services. In this episode: Industrial functional safety ensures that engineered systems protect people and assets from harm.Functional safety assessment identifies hazards in safety-critical systems and ensures they meet regulatory requirements.The standards landscape includes I.Safety Integrity Levels, or S.A comprehensive functional safety assessment follows a defined flow: identify hazards in the system, evaluate the risk if controls fail, design appropriate safeguards, validate that controls work as intended, and certify compliance with applicable standards.Functional safety assessment focuses on safety-critical systems and their protective layers.Reference: IEC 61508 (Functional Safety of Electrical/Electronic/Programmable Electronic Safety-Related Systems) defines SIL 1-4 and is the foundational standard for all domains. Part 1 cover More in this series: ISO 12100 — Machinery Risk Assessment | ISO 13849 — Machinery Safety and Performance Levels Explore more from Critical Systems Analysis. Work with us | LinkedIn | criticalsystemsanalysis.com All shows on Apple Podcasts: AI & ML Safety | Fault Tree Analysis | FS Assessment | Safety Analysis | IEC 61508 | IEC 62443 | ISO 10218 | ISO 12100 | ISO 13849 | ISO 26262 | ISO/PAS 8800 | ISO 26262-11 | V-Model | UL 4600.

    Industrial Functional Safety: The Standards Landscape

  9. 22 Aug

    What Is Functional Safety? A Plain-English Introduction

    Every day, systems we trust—a car's brakes, a factory's emergency stop, a medical device—protect us from harm. Functional safety is about engineering these protections correctly. It's the discipline of designing systems so that when components fail, they fail safely. Part of the Critical Systems Analysis functional-safety series on Assessment and Services. In this episode: Functional safety sounds technical, but it's really about one thing: making sure systems fail safely.Let's define functional safety precisely.Why do we care about functional safety? Because failures happen in the real world—weather, wear, accidents, power surges.Systems fail in different ways, and functional safety addresses them all.Different systems need different levels of protection.Functional safety isn't a box you tick once.Reference: Functional safety defined per IEC 61508-1:2010 Clause 3.1.3: 'the part of the overall safety of a system that depends on automatic safety systems, other technology safety systems a More in this series: IEC 61508 — Functional Safety Foundations | Functional Safety Assessment and Services Explore more from Critical Systems Analysis. Partner with usFollow on LinkedInVisit our websiteRead our feature on Automate.orgAll shows on Apple Podcasts: AI & ML Safety | Fault Tree Analysis | FS Assessment | Safety Analysis | IEC 61508 | IEC 62443 | ISO 10218 | ISO 12100 | ISO 13849 | ISO 26262 | ISO/PAS 8800 | ISO 26262-11 | V-Model | UL 4600.

    What Is Functional Safety? A Plain-English Introduction

  10. 9 Aug

    Functional Safety Assessment and Services — Ep 2: How to Scope a Functional Safety Consulting Engagement

    Episode 2 of 30 in Functional Safety Assessment and Services — a serial video course from Critical Systems Analysis for working safety professionals. When was the last time your scope statement named what was excluded, not just what was in? Who on your last engagement held signature authority over the boundary, and did they use it before day one or in week nine when the argument started? Critical Systems Analysis: criticalsystemsanalysis.com Services | Trainings | Industries | Experience | Events and Webinars | Contact | Certification Support

  11. 9 Aug

    Functional Safety Assessment and Services — Ep 1: HARA: Hazard Analysis and Risk Assessment, Explained

    Episode 1 of 30 in Functional Safety Assessment and Services — a serial video course from Critical Systems Analysis for working safety professionals. Who on your program can actually defend the exposure rating that dropped a hazardous event one class, and dropped the safety measure with it? When the assessor asks why the operating situation catalog looks identical to the one from your last platform, what is the answer? Critical Systems Analysis: criticalsystemsanalysis.com Services | Trainings | Industries | Experience | Events and Webinars | Contact | Certification Support

  • 11 Episodes

About

"Functional Safety Assessment & Services" is a serial video course from Critical Systems Analysis, published weekly in strict curriculum order — building from foundational terms and structure through lifecycle practice to advanced, assessor-level topics. Designed for working functional-safety engineers and managers, not beginners or students. Critical Systems Analysis (CSA) is a functional safety, reliability, and certification consultancy serving robotics, autonomous systems, transportation, and industrial equipment manufacturers. CSA provides end-to-end safety engineering services: preliminary gap analyses and safety audits, SIL/PL determination, FMEA and FMEDA execution, fault tree analysis, safety case development, hardware metrics (SPFM/LFM/PMHF), lifecycle documentation, and embedded safety engineering support. CSA engineers work alongside product teams from architecture through final functional safety assessment, and support companies seeking NRTL, CE, ATEX, ISO 26262, and UL 4600 marks. Contact: Sales@criticalsa.com. This series is part of the CSA Functional Safety Network — a coordinated set of weekly video courses covering IEC 61508, ISO 26262, ISO/SAE 21434, SOTIF (ISO 21448), UL 4600, IEC 62443, ISO/PAS 8800, ISO 13849, machinery safety, safety analysis methods, and more. Each show links to the others so practitioners can follow the thread that matches their project.

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