System Safety and Functional Safety

Technical systems and facilities must be operated safely. The protection of people in their daily work is one of the most important tasks of a responsible interaction with each other.

A set of rules and regulations form the mandatory legal framework for operators of potentially hazardous systems and installations.

In order to be able to operate facilities, systems and work equipment safely, the measures for considering and achieving safety must be carried out at an early stage of their development. These include the establishment of a suitable process model in the developing company, the consideration of relevant safety standards and the binding application of an agreed safety program.

Depending on the branch of industry and application, the additional requirements of functional safety for a modern development process do not necessarily contribute to the overall development costs. Thus, the implementation of associated safety measures –safety functions - requires the prior execution of detailed hazard and risk analysis. Also, validation must ensure that the safety features that are developed do actually work. Preference is given to risk reduction measures or security functions on a purely technical basis, so that, if possible, a user is not burdened with additional security responsibility.

Safety is the quality of safety features                         

Current safety standards that follow the state of the art define a safety lifecycle for the development of safety-related products. This ranges from the early concept phase through the implementation of the system to its decommissioning. At each stage of this safety lifecycle, specific requirements apply to the developer.

A very important contribution to the production of safe systems is made by a safety analysis. With its help, the hazards of a system are identified and evaluated. A safety analysis required in order to implement risk reduction measures in a targeted and effective manner. The methods make it possible to identify potential weaknesses and to provide proof for functional safety.

Weapon system safety

Nowadays, product standards for functional safety are often derived from the basic safety standard IEC 61508. In the field of defence technology, IEC 61508 is applied directly to the development of military systems, with German army-specific supplements taking effect. Through numerous consultations of industrial companies and audits carried out on behalf of Federal Office of Bundeswehr Equipment, Information Technology and In-Service Support (BAAINBw), tms has proven expertise in the field of functional safety.

Services we provide:

• performing safety analysis, including

  • Fault tree analyses (FTA)
  • Failure Modes and Effects Criticality Analyses (FMECA)
  • Failure Modes and Effects Analyses (FMEA)

• conducting independent safety audits

• Assessment of the safety of technical systems

  •  Software safety
  •  Electronic hardware
  •  Programmable logic (PLD, CPLD, FPGA)

• Performing examination and audits based on:

  • IEC 61508
  • ISO 26262
  • MIL-STD-882

• Safety support for developments

• Risk assessment

• Safety integrity certification

• Assistance with proof of safety

  • Proof of systematic suitability
  • Creation of safety manuals
  • Documentation

References

  • System Safety Demonstration Manual

    System Safety Demonstration Manual developed on behalf of the Germany‘s Federal Office of Bundeswehr Equipment, Information Technology and In-Service Support (Bundesamt für Ausrüstung, Informationstechnik und Nutzung der Bundeswehr - BAAINBw). more

  • IRIS-T SL

    Functional safety audit of a guided missile. more

  • EFCS-MLRS (MARS II)

    Functional safety audit of the software development process of a fire control system. more

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