Advanced Functional Safety: ISO 26262 Part 3 Concept Phase

Part 3 is where functional safety projects succeed or fail.

Get the Item Definition wrong, and you'll rewrite it three times. Misjudge your ASIL, and you'll over-engineer or under-protect. Miss a hazard in your HARA, and it comes back during assessment.

This course teaches you to do Part 3 right the first time.

I'm Paul Danci, Functional Safety Manager at a German OEM with 15+ years of automotive experience. I've reviewed many HARAs, Item Definitions, and Functional Safety Concepts, and I've seen every mistake. This course shows you exactly how to build work products that pass assessment.

What you'll be able to do:

• Write a complete Item Definition document that covers all required content

• Structure and execute a HARA that identifies all relevant hazardous events

• Determine ASIL levels correctly (and know when B vs A actually matters)

• Define Safety Goals with proper safe states and FTTI/FDTI considerations

• Create a Functional Safety Concept that flows logically to Part 4

• Apply ASIL decomposition correctly and document the rationale

• Explain your decisions confidently during confirmation reviews

What's covered:

• Item Definition – content, boundaries, interfaces, recipients

• HARA methodology – operational situations, hazard identification, S/E/C ratings

• ASIL determination – the logic behind the matrix, edge cases, documentation

• Safety Goals – safe state definition, FTTI, FDTI, fault tolerant time intervals

• Functional Safety Concept – structure, allocation, traceability to Safety Goals

• ASIL decomposition – when to use it, how to document independence

• Real example: Steer-by-Wire system from Item Definition through FSC

• Templates and examples you can adapt to your projects

Who this is for:

• Engineers writing their first HARA or Item Definition

• Safety managers reviewing Part 3 work products

• Anyone who completed the ISO 26262 Crash Course and wants deeper knowledge

• Professionals preparing for functional safety assessments

Why this course?

Part 3 has the highest impact on your entire project. The decisions you make here cascade through system, hardware, and software development. Most engineers learn this by making expensive mistakes. This course lets you learn from mine instead.