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Safety in Supervisory Control for Critical Systems

  • Reinaldo SquillanteJr.
  • Diolino J. Santos Fo
  • Jeferson A. L. de Souza
  • Fabrício Junqueira
  • Paulo E. Miyagi
Part of the IFIP Advances in Information and Communication Technology book series (IFIPAICT, volume 394)

Abstract

Recent studies show the designs of automated systems are becoming increasingly complex to meet the global competitive market. Additionally, organizations have focused on policies to achieve people’s safety and health, environmental management system, and controlling of risks, based on standards. In this context, any industrial system in the event of a fault that is not diagnosed and treated correctly could be considered to pose a serious risk to people’s health, to the environment and to the industrial equipment. According to experts, the concept of Safety Instrumented Systems (SIS) is a practical solution to these types of issues. They strongly recommend layers for risk reduction based on control systems organized hierarchically in order to manage risks, preventing or mitigating faults, or to bringing the process to a safe state. Additionally, the concept of Risk and Hazard Control can be applied to accomplish the required functionalities. It is based on problem solving components and considers a cooperative way to find a control solution. In this context, the software architecture can be based on a service-oriented architecture (SOA) approach. This paper initially proposes a new architecture for design of safety control systems for critical systems, based on Safety Supervisory Control Architecture, in accordance with standards IEC 61508 and IEC 61511. Furthermore, a method is also proposed for design the control layer of risk prevention within Safety Supervisory Control Architecture.

Keywords

Safety Supervisory Control Architecture Safety Instrumented System Critical Fault diagnosis Critical Fault Treatment Service-oriented architecture 

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Copyright information

© IFIP International Federation for Information Processing 2013

Authors and Affiliations

  • Reinaldo SquillanteJr.
    • 1
  • Diolino J. Santos Fo
    • 1
  • Jeferson A. L. de Souza
    • 1
  • Fabrício Junqueira
    • 1
  • Paulo E. Miyagi
    • 1
  1. 1.University of São PauloSão PauloBrazil

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