Operational dependability ensures the systems’ level of integrity

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SOM Ligeron is an expert in risk management and is developing a global service offering intended to evaluate the quality of software and process development related to on-board systems.

Our Expertises

Missions

Many fields (rail, automotive, aeronautic, industry) have adopted the standard use of on-board systems (such as fail-safe controllers, electronic calculators) and the implementation of safety loops supporting software. This software’s quality of development is therefore key to ensuring the level of integrity of control-command systems’ security. In this context, the software’s operational dependability assesses whether the various software, development processes and their environment of use comply with the operational safety requirements and standards in the field, and contribute to the safety of the system. Operational dependability studies make it possible to allocate, where necessary, a level of safety and to modulate the requirements of the development process assigned to programmable electronic components (applications, OS, data, transmissions, tested or reused components’ libraries, etc.).

Expertises et prestations

Analysis of needs and feasibility
- Operational analysis
- Risks analysis
- MBSE modeling of operational safety sequences
Specifications
- Prescription of safety
- Specification of safety modules
- Dysfunctional modeling/MBSA
Architectural design – Detailed design
- Analysis of independence
- Analysis of architectural robustness
- Analysis of equipment/software interactions
Coding
- Critical review of the code
Unit testing – Integration test – Test for approval
- Safety functions approval plan
- Risks analysis
Receipt
- Safety file