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Safety-critical software and current standards initiatives

R Shaw1

  • 1Applied Information Engineering, Lloyd's Register, Croydon, UK.

Computer Methods and Programs in Biomedicine
|July 1, 1994
PubMed
Summary

This study explores standards for safety-critical software development, contrasting software safety with traditional devices. It reviews current initiatives and analyzes specific standards, highlighting their inherent weaknesses and ongoing improvements.

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Area of Science:

  • Computer Science
  • Software Engineering
  • Systems Engineering

Background:

  • Standards play a crucial role in ensuring the reliability and safety of complex systems.
  • Software safety presents unique challenges compared to traditional electromechanical systems.
  • The increasing reliance on software in critical applications necessitates robust development standards.

Purpose of the Study:

  • To examine the role and impact of standards in the development of safety-critical software.
  • To identify key standards-making bodies and current initiatives in software safety.
  • To analyze the requirements imposed by standards on developers and discuss their limitations.

Main Methods:

  • Literature review of standards and safety-critical software development.

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  • Comparative analysis of software safety challenges versus traditional systems.
  • In-depth examination of selected safety-critical software standards.

    • Main Results:

    • Identified major standards-making bodies and ongoing standardization efforts.
    • Highlighted the distinct nature of software safety issues.
    • Detailed the specific requirements mandated by current safety-critical software standards.
    • Uncovered inherent weaknesses within existing standards.

    Conclusions:

    • Standards are essential but evolving for safety-critical software.
    • Current standards provide a framework but have limitations requiring further development.
    • Ongoing efforts aim to address identified weaknesses and enhance software safety assurance.