Functional Safety Concept

The Functional Safety Concept (FSC) is a mandatory work product defined in ISO 26262-3:2018, Clause 7, for the development of automotive electrical and electronic (E/E) systems. Its primary purpose is to systematically translate the abstract Safety Goals, derived from the Hazard Analysis and Risk Assessment (HARA), into concrete and verifiable Functional Safety Requirements (FSRs). The FSC specifies *what* the system must do to remain safe, including its behavior under fault conditions, fault-tolerant time intervals, and safe states. It serves as the critical link between risk assessment and system design, providing the foundational requirements for all subsequent development phases, including the Technical Safety Concept, hardware, and software design. By defining these requirements early, the FSC ensures that safety is an integral part of the architecture, mitigating risks and preventing costly redesigns later in the product lifecycle. It is distinct from the Technical Safety Concept, which details *how* these functional requirements will be implemented.

The application of the Functional Safety Concept in enterprise risk management follows a structured process as mandated by ISO 26262. The first step is **Requirement Allocation**, where Safety Goals from HARA are broken down and allocated to preliminary architectural elements, defining specific Functional Safety Requirements (FSRs) for each. The second step is **Defining Safety Mechanisms**, which involves conceptually describing how the system will detect, indicate, and control faults to meet each FSR, such as through redundancy, monitoring functions, or transitioning to a degraded operational mode. The final step is **Verification and Confirmation**, where the FSC undergoes rigorous reviews and analyses to ensure its completeness, correctness, and consistency, confirming that all Safety Goals are adequately addressed. For example, Scania CV AB utilized a systematic process to develop the FSC for a highly automated driving function. Implementing a robust FSC process can improve requirements traceability to over 95%, reduce late-stage design changes by up to 30%, and significantly increase the first-pass success rate for ISO 26262 certification audits.

Taiwan enterprises, often transitioning from the ICT sector to automotive, face several key challenges in implementing the Functional Safety Concept. First is a **talent and experience gap** in automotive systems engineering and safety analysis. Second, they encounter **supply chain collaboration difficulties**, as they struggle to produce the rigorous safety documentation (e.g., safety analyses, DIA) demanded by OEMs and Tier 1 suppliers. Third, a **development culture clash** exists between the traditional agile, fast-to-market ICT approach and the meticulous, documentation-heavy V-model process required by ISO 26262. To overcome these, companies should prioritize **talent development and external expertise**, partnering with consultants like Winners Consulting to accelerate knowledge transfer. A second strategy is to **establish standardized safety interfaces**, creating templates and clear processes for supplier collaboration. Finally, adopting an **Agile Safety approach**, which integrates safety activities into development sprints, can help bridge the cultural gap, ensuring compliance without sacrificing agility.

Winners Consulting specializes in Functional Safety Concept for Taiwan enterprises, delivering compliant management systems within 90 days. Free consultation: https://winners.com.tw/contact